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+id,prompt,A,B,C,D,E,answer,context,context_relevance_score,context_source,prompt_group_key,base_question_id
+1,Pick the best possible answer: What is Martin Heidegger's view on the relationship between time and human existence? among the listed options.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Rationality is the quality of being guided by or based on reason. In this regard, a person acts rationally if they have a good reason for what they do, or a belief is rational if it is based on strong evidence. This quality can apply to an ability, as in a rational animal, to a psychological process, like reasoning, to mental states, such as beliefs and intentions, or to persons who possess these other forms of rationality. A thing that lacks rationality is either arational, if it is outside the domain of rational evaluation, or irrational, if it belongs to this domain but does not fulfill its standards.
+There are many discussions about the essential features shared by all forms, or accounts, of rationality. According to reason-responsiveness accounts, to be rational is to be responsive to reasons. For example, dark clouds are a reason for taking an umbrella, which is why it is rational for an agent to do so in response. An important rival to this approach are coherence-based accounts,",0.0,live_api,pick the best possible answer: what is martin heidegger's view on the relationship between time and human existence? among the listed options.,1627777360
+2,What is accelerator-based light-ion fusion?,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This method is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This method is relatively difficult to implement and requires a complex system of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This method is relatively difficult to implement and requires a complex system of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This method is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This method is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,"Nuclear fusion is a reaction in which two or more atomic nuclei combine to form a larger nucleus. The difference in mass between the reactants and products is manifested as either the release or the absorption of energy. This difference in mass arises as a result of the difference in nuclear binding energy between the atomic nuclei before and after the fusion reaction. Nuclear fusion is the process that powers all active stars, via many reaction pathways.
+Fusion processes require an extremely large triple product of temperature, density, and confinement time. These conditions occur only in stellar cores, advanced nuclear weapons, and are approached in fusion power experiments.
+A nuclear fusion process that produces atomic nuclei lighter than nickel-62 is generally exothermic, due to the positive gradient of the nuclear binding energy curve. The most fusible nuclei are among the lightest, especially deuterium, tritium, and helium-3. The opposite process, nuclear fission, is most energet",0.2,live_api,what is accelerator-based light-ion fusion?,223074803
+3,Determine the correct option: What is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? among the listed options.,Blueshifting,Redshifting,Reddening,Whitening,Yellowing,C,Each entry on this list of common misconceptions is worded as a correction; the misconceptions themselves are implied rather than stated. These entries are concise summaries; the main subject articles can be consulted for more detail.,0.0,live_api,determine the correct option: what is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? among the listed options.,2371094586
+4,Select the most accurate option: What is Martin Heidegger's view on the relationship between time and human existence? carefully.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Augustine of Hippo ( aw-GUST-in, US also  AW-gə-steen; Latin: Aurelius Augustinus Hipponensis; 13 November 354 – 28 August 430) was a Christian theologian and philosopher from Thagaste, Numidia Cirtensis and the Bishop of Hippo Regius. He is generally regarded as one of the most influential philosophers in the history of the Western world, and he is viewed as one of the most important Church Fathers of the Latin Church in the Patristic Period.
+In his youth he was drawn to the Manichaean faith, and later to the Hellenistic philosophy of Neoplatonism. After his conversion to Christianity and baptism in 386 by Saint Ambrose, Augustine developed his own approach to philosophy and theology, making significant contributions in a wide variety of areas. He is known as Doctor Gratiae (""Doctor of Grace"") for the vast influence of his views on the necessity of unmerited, prevenient grace, for salvation and the nature of original sin.
+Additionally, he made important contributions in ecclesiology,",0.07142857142857142,live_api,select the most accurate option: what is martin heidegger's view on the relationship between time and human existence? carefully.,2009896257
+5,"Identify the correct statement: What is the concept of simultaneity in Einstein's book, Relativity? carefully.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Frank Dyson, the ninth Astronomer Royal, determined latitude variation caused by irregular movement of Earth's magnetic poles. He used a telescope floating in mercury and was able to detect when the poles of the earth wobbled greater than one foot. During the 1919 eclipse, Dyson was crucial in designing the Eddington experiment with Arthur Eddington to test Albert Einstein's Theory of relativity.Wilson, Margaret (1951). Ninth Astronomer Royal. Cambridge, England: W.Heffer and Sons Limited. pp. 191–193. Starting months before the eclipse, stars were photographed and carefully charted, and during the total eclipse the same stars would be photographed and charted again. If Einstein's theory was correct then the light from the selected stars would be bent passing around the sun and show more deflection than Newtonian theory alone predicted. When the photographs from the eclipse were developed it became clear that Einstein's theory had accurately predicted the position of stars. This was one of the first experiments to confirm general relativity.
+
+Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.",0.5,local,"identify the correct statement: what is the concept of simultaneity in einstein's book, relativity? carefully.",3246078992
+6,Identify the correct statement: What is the effect generated by a spinning superconductor? among the listed options.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,identify the correct statement: what is the effect generated by a spinning superconductor? among the listed options.,145474730
+7,"Which of the following is correct? What is a ""coffee ring"" in physics? among the listed options.",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"The Colombian coffee growing axis (Spanish: Eje Cafetero), also known as the Coffee Triangle (Spanish: Triángulo del Café), is a part of the Colombian Paisa region in the rural area of Colombia, which is famous for growing and production of a majority of Colombian coffee, considered by some as the best coffee in the world. There are three departments in the area: Caldas, Quindío and Risaralda. These departments are among the smallest departments in Colombia with a total combined area of , about 1.2% of the Colombian territory. The combined population is 2,291,195 (2005 census).
+
+The coffee ceremony is the traditional serving of coffee, usually after a big meal. It often involves the use of a jebena (ጀበና), a clay coffee pot in which the coffee is boiled. The preparer roasts the coffee beans in front of guests, then walks around wafting the smoke throughout the room so participants may sample the scent of coffee. Then the preparer grinds the coffee beans in a traditional tool called a . The coffee is put into the jebena, boiled with water, and then served in small cups called si'ni. Coffee is usually served with sugar, but is also served with salt in many parts of Ethiopia. In some parts of the country, niter kibbeh is added instead of sugar or salt.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.5555555555555556,local,"which of the following is correct? what is a ""coffee ring"" in physics? among the listed options.",4081077481
+8,Select the most accurate option: What is the Liouville density? among the listed options.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.3333333333333333,local,select the most accurate option: what is the liouville density? among the listed options.,1900801217
+9,Select the most accurate option: What are the constituents of cold dark matter?,"They are unknown, but possibilities include large objects like MACHOs or new particles such as WIMPs and axions.",They are known to be black holes and Preon stars.,They are only MACHOs.,They are clusters of brown dwarfs.,They are new particles such as RAMBOs.,A,"The identity of dark matter is unknown, but there are many hypotheses about what dark matter could consist of, as set out in the table below.
++ Major dark matter hypotheses Light bosons Axions Axion-like particles Fuzzy cold dark matter Neutrinos Standard Model Sterile neutrinos Other particles Lightest supersymmetric particle Weakly interacting massive particles (WIMPs) Self-interacting dark matter Atomic dark matter Strangelet Macroscopic Primordial black holes (PBHs) (See also the accompanying slide presentation. Other massive compact halo objects (MACHOs)
+
+In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form of energy known as dark energy. Thus, dark matter constitutes 85% of the total mass, while dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy, its local density in the Solar System is much less than normal matter. The total of all the dark matter out to the orbit of Neptune would add up about 1017 kg, the same as a large asteroid. Dark matter is classified as ""cold"", ""warm"", or ""hot"" according to velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.
+
+After the recombination epoch, the slightly denser regions of the uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today. The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter. The best measurements available, from the Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold. This CDM is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about 4.6%. (See Table 8.)",0.375,local,select the most accurate option: what are the constituents of cold dark matter?,2654623940
+10,Which of the following is correct? What is the relationship between the Wigner function and the density matrix operator? from the following choices.,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+Relationship to surface bulk density
+In the event that most of the echo is from first surface reflections ( or so), the OC radar albedo is a first-order approximation of the Fresnel reflection coefficient (aka reflectivity) and can be used to estimate the bulk density of a planetary surface to a depth of a meter or so (a few wavelengths of the radar wavelength which is typically at the decimeter scale) using the following empirical relationships:
+
+Relationship to the sign function
+The absolute value function of a real number returns its value irrespective of its sign, whereas the sign (or signum) function returns a number's sign irrespective of its value. The following equations show the relationship between these two functions:",0.7272727272727273,local,which of the following is correct? what is the relationship between the wigner function and the density matrix operator? from the following choices.,327427272
+11,Select the most accurate option: What is the Peierls bracket in canonical quantization? based on the given context.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization technique.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization procedure that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization technique.,C,No match found.,0.0,live_api,select the most accurate option: what is the peierls bracket in canonical quantization? based on the given context.,2309328259
+12,"Choose the correct answer: What is the throttling process, and why is it essential? from the following choices.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure raise in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure drop in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature raise in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is not significant because it is not used in the refrigeration cycle.",B,"Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.3333333333333333,local,"choose the correct answer: what is the throttling process, and why is it essential? from the following choices.",2272780912
+13,Choose the correct answer: Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+Concept 
+Diffraction is a general phenomenon of waves, occuring whenever a wavefront is obstructed. The obstruction may be solidly blocking the wave or transparent and shifting the phase of the wave. The waves beyond the obstacle interfere causing a diffraction pattern. The diffraction pattern cannot be predicted by the straight line trajectories of geometrical optics. For a simple example, a strong light source blocked by a solid object does not show a crisp dark shadow when examined carefully.
+
+If light consisted strictly of ordinary or classical particles, and these particles were fired in a straight line through a slit and allowed to strike a screen on the other side, we would expect to see a pattern corresponding to the size and shape of the slit. However, when this ""single-slit experiment"" is actually performed, the pattern on the screen is a diffraction pattern in which the light is spread out. The smaller the slit, the greater the angle of spread. The top portion of the image shows the central portion of the pattern formed when a red laser illuminates a slit and, if one looks carefully, two faint side bands. More bands can be seen with a more highly refined apparatus. The wave theory of light explains the pattern as being the result of the interference of light waves from the slit.",0.5789473684210527,local,choose the correct answer: which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,3822487402
+14,What is the interpretation of supersymmetry in stochastic supersymmetric theory?,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,"Moreover, from the theoretical physics standpoint, dynamical chaos itself, in its most general manifestation, is a spontaneous order. The essence here is that most orders in nature arise from the spontaneous breakdown of various symmetries. This large family of phenomena includes elasticity, superconductivity, ferromagnetism, and many others. According to the supersymmetric theory of stochastic dynamics, chaos, or more precisely, its stochastic generalization, is also part of this family. The corresponding symmetry being broken is the topological supersymmetry which is hidden in all stochastic (partial) differential equations, and the corresponding order parameter is a field-theoretic embodiment of the butterfly effect.
+Combinatorial (or complex) chaos
+There are also definitions of chaos that don't require the sensitivity on initial conditions property, such as combinatorial chaos (I.e. applying recursively a discrete combinatorial action). This is also comparable and similar to chaos generated by cellular automata. This is important because this type of chaos it's also equivalent to a turing machine, you can execute computation with such dynamical systems, and as such the halting problem is not decidable, therefore some computational algorithms may never end. This is ultimately a very different way for a system to be unpredictable.
+
+Because supersymmetric extensions of the Standard Model of particle physics readily predict a new particle with these properties, this apparent coincidence has been called the ""WIMP miracle"", and a stable supersymmetric partner has long been a prime explanation for dark matter. Experimental efforts to detect WIMPs include the search for products of WIMP annihilation, including gamma rays, neutrinos and cosmic rays in nearby galaxies and galaxy clusters; direct detection experiments designed to measure the collision of WIMPs with nuclei in the laboratory, as well as attempts to directly produce WIMPs in colliders, such as the Large Hadron Collider at CERN. In the early 2010s, results from direct-detection experiments along with the lack of evidence for supersymmetry at the Large Hadron Collider (LHC) experiment have cast doubt on the simplest WIMP hypothesis.
+
+Over the years, there have been many objections to aspects of Copenhagen-type interpretations, including the discontinuous and stochastic nature of the ""observation"" or ""measurement"" process, the difficulty of defining what might count as a measuring device, and the seeming reliance upon classical physics in describing such devices. Still, including all the variations, the interpretation remains one of the most commonly taught.See, for example:",1.0,local,what is the interpretation of supersymmetry in stochastic supersymmetric theory?,3221190307
+15,Identify the correct statement: Which mathematical function is commonly used to characterize linear time-invariant frameworks? from the following choices.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,"This glossary of computer science is a list of definitions of terms and concepts used in computer science, its sub-disciplines, and related fields, including terms relevant to software, data science, and computer programming.",0.06666666666666667,live_api,identify the correct statement: which mathematical function is commonly used to characterize linear time-invariant frameworks? from the following choices.,2465363583
+16,"Pick the best possible answer: What is a ""coffee ring"" in physics?",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"In 1935, Carrel's book, L'Homme, cet inconnu (Man, the Unknown), became a best-seller. The book attempted to comprehensively outline what is known, and unknown, of the human body and human life ""in light of discoveries in biology, physics, and medicine"", to shed light on the problems of the modern world, and to provide possible routes to a better life for human beings.
+
+Cape Town is considered one of the best cities in the world for coffee, and is known as an international coffee capital. In 2024, Cape Town was ranked as the world's 9th best city for coffee by US Food & Wine Magazine. Truth Coffee, situated in Cape Town CBD, was voted Best Coffee Shop in the World in 2015 and 2016 by the UK's Daily Telegraph and Espresso Lab in Woodstock was voted the 11th best coffee shop in the world, and the best in Africa, in 2025.
+
+He was awarded a Bachelor of Liberal Arts with general and special honorsCarl Sagan – website of the Massachusetts Institute of Technology in what he quipped was ""nothing.""Sic. See  In 1955, he earned a Bachelor of Science in physics. He went on to do graduate work at the University of Chicago, earning a Master of Science in physics in 1956 and a Doctor of Philosophy in astronomy and astrophysics in 1960. His doctoral thesis, under the direction of Kuiper,  was ""Physical Studies of the Planets"".Spangenburg & Moser 2004, p. 28. During his graduate studies, he spent summers working with Kuiper, as well as chemist Melvin Calvin and physicist George Gamow. He credited Kuiper with teaching him back-of-the-envelope calculations: ""A possible explanation to a problem occurs to you, you pull out an old envelope, appeal to your knowledge of fundamental physics, scribble a few approximate equations on the envelope, and see if your answer comes anywhere near explaining your problem. If not, you look for a different explanation. It cut through nonsense like a knife through butter.""",0.7142857142857143,local,"pick the best possible answer: what is a ""coffee ring"" in physics?",7798378
+17,Pick the best possible answer: What is the definition of Atomristor? based on the given context.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"Definition
+A decision problem is the formal language of all inputs for which the output (the answer to the yes-no question on a given input) is YES.
+
+Definition
+As discussed above, there are several context-dependent ways of defining the expected value. The simplest and original definition deals with the case of finitely many possible outcomes, such as in the flip of a coin. With the theory of infinite series, this can be extended to the case of countably many possible outcomes. It is also very common to consider the distinct case of random variables dictated by (piecewise-)continuous probability density functions, as these arise in many natural contexts. All of these specific definitions may be viewed as special cases of the general definition based upon the mathematical tools of measure theory and Lebesgue integration, which provide these different contexts with an axiomatic foundation and common language.
+
+Definition with monoids 
+In the context of category theory, categories are always defined together with an Identity map, therefore these definitions are based on monoids instead of semi-groupsNote that It's always possible to add an Identity on the semi-group, define a monoid and pull back the monoid structure onto the original semi-group.",0.6666666666666666,local,pick the best possible answer: what is the definition of atomristor? based on the given context.,1258932583
+18,Select the most accurate option: What is the cause of the observed change in the periods of moons orbiting a distant planet when measured from Earth? based on the given context.,"The distinction in the size of the planet's moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The contrast in the speed of light when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The contrast in distance travelled by light from the planet (or its moon) to Earth when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the atmospheric conditions of the planet when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The contrast in the gravitational pull of the planet on its moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.",C,"Galileo used  for  (Latin: I have observed the most distant planet to have a triple form) for discovering the rings of Saturn in 1610. Galileo announced his discovery that Venus had phases like the Moon in the form  (Latin: These immature ones have already been read in vain by me -oy), that is, when rearranged,  (Latin: The Mother of Loves [= Venus] imitates the figures of Cynthia [= the moon]). In both cases, Johannes Kepler had solved the anagrams incorrectly, assuming they were talking about the Moons of Mars () and a red spot on Jupiter (), respectively. By coincidence, he turned out to be right about the actual objects existing.
+
+In 2015 a study led by Artie P. Hatzes showed stable long-term evidence for both a planetary companion and stellar activity. An asteroseismic analysis of the residuals to the planet fit has determined that Aldebaran b has a minimum mass of  Jupiter masses, and that when the star was on the main sequence it would have given this planet Earth-like levels of illumination and therefore, potentially, temperature. This would have placed it and any of its moons in the habitable zone. However, a follow-up study in 2019 found that additional data weaken the evidence for a planetary companion. A two-planet solution fits the data better but would be unstable; the more likely explanation is that the radial velocity variations are caused by intrinsic stellar oscillations that mimic a planetary companion, as observed in Gamma Draconis and 42 Draconis. Based on the 2019 study, some subsequent studies of planet candidates around giant stars consider Aldebaran b doubtful or disproven, including a 2025 paper with Hatzes as the lead author.",0.5,local,select the most accurate option: what is the cause of the observed change in the periods of moons orbiting a distant planet when measured from earth? based on the given context.,4090983487
+19,Choose the correct answer: What is the variation between illuminance and luminance? carefully.,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,No match found.,0.0,live_api,choose the correct answer: what is the variation between illuminance and luminance? carefully.,1649943063
+20,"Which of the following is correct? Who proposed the concept of ""maximal acceleration""? carefully.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"The tangential acceleration of an object is the component of the acceleration which is in the same direction as the motion (or tangential velocity) of the object. When the velocity of the object does not change direction, this is called linear acceleration. Deceleration or retardation is the, on the other hand, is the component of the acceleration in the opposite (or antiparallel) direction to the tangential velocity. Radial acceleration or normal acceleration (or centripetal acceleration during circular motions) is that component of the acceleration which changes the direction of the object's velocity.
+
+Instantaneous acceleration
+Instantaneous acceleration is the limit of the average acceleration over an infinitesimal interval of time. In the terms of calculus, instantaneous acceleration is the derivative of the velocity vector with respect to time:
+
+The fact that A is Artinian simplifies the notion of a Jacobson radical; for an Artinian ring, the Jacobson radical of A is the intersection of all (two-sided) maximal ideals (in contrast, in general, a Jacobson radical is the intersection of all left maximal ideals or the intersection of all right maximal ideals.)",0.375,local,"which of the following is correct? who proposed the concept of ""maximal acceleration""? carefully.",583560022
+21,Identify the correct statement: What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth? among the listed options.,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,identify the correct statement: what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth? among the listed options.,800173388
+22,Which of the following is correct? Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions? among the listed options.,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+The generators of SU(2) and U(1) are given the name weak isospin (labeled ) and weak hypercharge (labeled ) respectively. These then give rise to the gauge bosons that mediate the electroweak interactions – the three  bosons of weak isospin (, , and ), and the  boson of weak hypercharge, respectively, all of which are ""initially"" massless. These are not physical fields yet, before spontaneous symmetry breaking and the associated Higgs mechanism.
+
+Sheldon Glashow,Glashow, S. (1959). ""The renormalizability of vector meson interactions."" Nucl. Phys. 10, 107. Abdus Salam, and Steven Weinberg were awarded the 1979 Nobel Prize in Physics for their contributions to the unification of the weak and electromagnetic interaction between elementary particles, known as the Weinberg–Salam theory. The existence of the electroweak interactions was experimentally established in two stages, the first being the discovery of neutral currents in neutrino scattering by the Gargamelle collaboration in 1973, and the second in 1983 by the UA1 and the UA2 collaborations that involved the discovery of the W and Z gauge bosons in proton–antiproton collisions at the converted Super Proton Synchrotron. In 1999, Gerardus 't Hooft and Martinus Veltman were awarded the Nobel prize for showing that the electroweak theory is renormalizable.",0.42857142857142855,local,which of the following is correct? who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions? among the listed options.,2807693117
+23,Determine the correct option: What is the Optical Signal-to-Noise Ratio (OSNR)?,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in frameworks where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.5,local,determine the correct option: what is the optical signal-to-noise ratio (osnr)?,1590521691
+24,Which of the following is correct? Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? carefully.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.",0.3076923076923077,local,which of the following is correct? which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? carefully.,420653237
+25,"Choose the correct answer: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion?","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)
+
+In Newtonian mechanics, the acceleration of a mass arises from forces acting on it, with its net acceleration being a result of the net force acting on it. By Newton's second law, the magnitude of the net acceleration will be proportional to the magnitude of the net force acting on the object and inversely proportional to the mass of the object, while the direction of the net acceleration will be the same as the direction of the net force.",0.4666666666666667,local,"choose the correct answer: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion?",3378663092
+26,Choose the correct answer: What is Hesse's principle of transfer in geometry? carefully.,Hesse's principle of transfer is a concept in biology that explains the transfer of genetic information from one generation to another.,Hesse's principle of transfer is a concept in chemistry that explains the transfer of electrons between atoms in a chemical reaction.,Hesse's principle of transfer is a concept in physics that explains the transfer of energy from one object to another.,Hesse's principle of transfer is a concept in economics that explains the transfer of wealth from one individual to another.,"Hesse's principle of transfer is a concept in geometry that states that if the points of the projective line P1 are depicted by a rational normal curve in Pn, then the group of the projective transformations of Pn that preserve the curve is isomorphic to the group of the projective transformations of P1.",E,No match found.,0.0,live_api,choose the correct answer: what is hesse's principle of transfer in geometry? carefully.,2998160998
+27,Pick the best possible answer: What was Pierre de Fermat's solution to the problem of refraction? from the following choices.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.5714285714285714,local,pick the best possible answer: what was pierre de fermat's solution to the problem of refraction? from the following choices.,3265995899
+28,Identify the correct statement: What is a uniform tiling in the hyperbolic plane? based on the given context.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+All regular polygons, {a}.
+ Regular tetrahedron: {3,3}
+ In general, all regular n-simplexes, {3,3,...,3}
+ The regular 24-cell in 4 dimensions, {3,4,3}.
+ The great 120-cell {5,5/2,5} and the grand stellated 120-cell {5/2,5,5/2}
+The self-dual (infinite) regular Euclidean honeycombs are:
+ Apeirogon: {∞}
+ Square tiling: {4,4}
+ Cubic honeycomb: {4,3,4}
+ In general, all regular n-dimensional Euclidean hypercubic honeycombs: {4,3,...,3,4}.
+The self-dual (infinite) regular hyperbolic honeycombs are:
+ Compact hyperbolic tilings: {5,5}, {6,6}, ... {p,p}.
+ Paracompact hyperbolic tiling: {∞,∞}
+ Compact hyperbolic honeycombs: {3,5,3}, {5,3,5}, and {5,3,3,5}
+ Paracompact hyperbolic honeycombs: {3,6,3}, {6,3,6}, {4,4,4}, and {3,3,4,3,3}
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.7,local,identify the correct statement: what is a uniform tiling in the hyperbolic plane? based on the given context.,1557455689
+29,Identify the correct statement: What is the reason for the formation of stars exclusively within molecular clouds? carefully.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.45454545454545453,local,identify the correct statement: what is the reason for the formation of stars exclusively within molecular clouds? carefully.,3062829317
+30,Identify the correct statement: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? carefully.,The atmosphere is a framework that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized structures and time-varying forcing from recurrent seasons.",The atmosphere is a structure that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic structure with no order or organization.,The atmosphere is a completely ordered structure with no chaos or randomness.,B,No match found.,0.0,live_api,identify the correct statement: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? carefully.,2868032100
+31,Identify the correct statement: What is the Peierls bracket in canonical quantization? among the listed options.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization approach.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization approach that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization approach.,C,No match found.,0.0,live_api,identify the correct statement: what is the peierls bracket in canonical quantization? among the listed options.,3191715164
+32,Pick the best possible answer: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,pick the best possible answer: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,1875501348
+33,Select the most accurate option: What is the definition of Atomristor? from the following choices.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:
+
+If, despite the preceding admonition, one decides to construct one's own domain parameters, one should select the underlying field and then use one of the following strategies to find a curve with appropriate (i.e., near prime) number of points using one of the following methods:
+ Select a random curve and use a general point-counting algorithm, for example, Schoof's algorithm or the Schoof–Elkies–Atkin algorithm,
+ Select a random curve from a family which allows easy calculation of the number of points (e.g., Koblitz curves), or
+ Select the number of points and generate a curve with this number of points using the complex multiplication technique.
+
+A   over sets  and  is a subset of  The set  is called the  or  of , and the set  the  or  of . In order to specify the choices of the sets  and , some authors define a  or  as an ordered triple , where  is a subset of  called the  of the binary relation. The statement  reads "" is -related to "" and is denoted by .Ernst Schröder (1895) Algebra und Logic der Relative, via Internet ArchiveC. I. Lewis (1918) A Survey of Symbolic Logic, pages 269–279, via internet ArchiveGunther Schmidt, 2010. Relational Mathematics. Cambridge University Press, , Chapt. 5 The  or  of  is the set of all  such that  for at least one . The codomain of definition, ,  or  of  is the set of all  such that  for at least one . The  of  is the union of its domain of definition and its codomain of definition.",0.5,local,select the most accurate option: what is the definition of atomristor? from the following choices.,2801725080
+34,What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level?,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,"One model that estimates the properties of an electron gas at absolute zero in metals is the Fermi gas. The electrons, being fermions, must be in different quantum states, which leads the electrons to get very high typical velocities, even at absolute zero. The maximum energy that electrons can have at absolute zero is called the Fermi energy. The Fermi temperature is defined as this maximum energy divided by the Boltzmann constant, and is on the order of 80,000 K for typical electron densities found in metals. For temperatures significantly below the Fermi temperature, the electrons behave in almost the same way as at absolute zero. This explains the failure of the classical equipartition theorem for metals that eluded classical physicists in the late 19th century.
+
+Density 
+The alkali metals all have the same crystal structure (body-centred cubic) and thus the only relevant factors are the number of atoms that can fit into a certain volume and the mass of one of the atoms, since density is defined as mass per unit volume. The first factor depends on the volume of the atom and thus the atomic radius, which increases going down the group; thus, the volume of an alkali metal atom increases going down the group. The mass of an alkali metal atom also increases going down the group. Thus, the trend for the densities of the alkali metals depends on their atomic weights and atomic radii; if figures for these two factors are known, the ratios between the densities of the alkali metals can then be calculated. The resultant trend is that the densities of the alkali metals increase down the table, with an exception at potassium. Due to having the lowest atomic weight and the largest atomic radius of all the elements in their periods, the alkali metals are the least dense metals in the periodic table. Lithium, sodium, and potassium are the only three metals in the periodic table that are less dense than water: in fact, lithium is the least dense known solid at room temperature.",0.5,local,what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level?,3076362594
+35,What is a pycnometer?,A device used to measure the density of a gas.,A device used to measure the mass of a liquid.,A device used to measure the volume of a gas.,A device used to determine the density of a liquid.,A device used to determine the volume of a liquid.,D,"Measurement 
+A number of techniques as well as standards exist for the measurement of density of materials. Such techniques include the use of a hydrometer (a buoyancy method for liquids), hydrostatic weighing (a buoyancy method for liquids and solids), immersed body method (a buoyancy method for liquids), pycnometer (liquids and solids), air comparison pycnometer (solids), oscillating U-tube (liquids), as well as pour and tap (solids). However, each individual method or technique measures different types of density (e.g. bulk density, skeletal density, etc.), and therefore it is necessary to have an understanding of the type of density  being measured as well as the type of material in question.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+The field of concurrent and distributed computing studies similar questions in the case of either multiple computers, or a computer that executes a network of interacting processes: which computational problems can be solved in such a network and how efficiently? However, it is not at all obvious what is meant by ""solving a problem"" in the case of a concurrent or distributed system: for example, what is the task of the algorithm designer, and what is the concurrent or distributed equivalent of a sequential general-purpose computer?",1.0,local,what is a pycnometer?,2037614705
+36,Determine the correct option: What is the purpose of the proximity-focusing design in a RICH detector? from the following choices.,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+Lens design: Lens - In optical engineering, Euclidean geometry is critical in the design of lenses, where precise geometric shapes determine the focusing properties. Geometric optics analyzes the focusing of light by lenses and mirrors.
+alt=Types of lenses|center|thumb|450x450px|Types of Lenses
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:",0.6363636363636364,local,determine the correct option: what is the purpose of the proximity-focusing design in a rich detector? from the following choices.,637073454
+37,What is the function of mammary glands in mammals?,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",1.0,local,what is the function of mammary glands in mammals?,712121482
+38,Identify the correct statement: What is the Peierls bracket in canonical quantization?,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization technique.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization procedure.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization approach that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization procedure.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization procedure.,C,"The Lorentz group is a Lie group of symmetries of the spacetime of special relativity.  This group can be realized as a collection of matrices, linear transformations, or unitary operators on some Hilbert space; it has a variety of representations.  This group is significant because special relativity together with quantum mechanics are the two physical theories that are most thoroughly established, and the conjunction of these two theories is the study of the infinite-dimensional unitary representations of the Lorentz group.  These have both historical importance in mainstream physics, as well as connections to more speculative present-day theories.
+
+The development of the representation theory has historically followed the development of the more general theory of representation theory of semisimple groups, largely due to Élie Cartan and Hermann Weyl, but the Lorentz group has also received special attention due to its importance in physics. Notable contributors are physicist E. P. W",0.0,live_api,identify the correct statement: what is the peierls bracket in canonical quantization?,1823539326
+39,Choose the correct answer: What is the definition of an improper rotation?,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"where  is some set with cardinality . One can show that the generalized binomial coefficient is well-defined, in the sense that no matter what set we choose to represent the cardinal number ,  will remain the same. For finite cardinals, this definition coincides with the standard definition of the binomial coefficient.
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.6666666666666666,local,choose the correct answer: what is the definition of an improper rotation?,1382228692
+40,Determine the correct option: What is the application of Memristor? carefully.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control structures, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"Systems biology is the computational and mathematical analysis and modeling of complex biological systems. It is a biology-based interdisciplinary field of study that focuses on complex interactions within biological systems, using a holistic approach (holism instead of the more traditional reductionism) to biological research. This multifaceted research domain necessitates the collaborative efforts of chemists, biologists, mathematicians, physicists, and engineers to decipher the biology of intricate living systems by merging various quantitative molecular measurements with carefully constructed mathematical models. It represents a comprehensive method for comprehending the complex relationships within biological systems. In contrast to conventional biological studies that typically center on isolated elements, systems biology seeks to combine different biological data to create models that illustrate and elucidate the dynamic interactions within a system. This methodology is essentia",0.16666666666666666,live_api,determine the correct option: what is the application of memristor? carefully.,2446142219
+41,Choose the correct answer: What is the significance of regularization in terms of renormalization problems in physics? from the following choices.,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a concept that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a framework below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a structure under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a structure below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.",0.36363636363636365,local,choose the correct answer: what is the significance of regularization in terms of renormalization problems in physics? from the following choices.,2600953811
+42,Select the most accurate option: What is the main focus of the Environmental Science Center at Qatar University? based on the given context.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Donald Trump's second and current tenure as the president of the United States began upon his inauguration as the 47th president on January 20, 2025. Trump, a Republican, previously served as the 45th president from 2017 to 2021. He lost re-election to Democratic nominee Joe Biden in 2020, and then won against Democratic nominee Kamala Harris in 2024. Trump is the second former U.S. president to return to office. Alongside Trump's second presidency, the Republican Party also currently holds simple majorities in the House of Representatives and the Senate, thereby attaining an overall federal government trifecta.
+During 2025, Trump signed 225 executive orders, the most of any president in a single year since Franklin D. Roosevelt. Many of these have been or are being challenged in court. His attempts to expand presidential power and conflict with the courts have been described as a defining characteristic of his second presidency. On immigration, Trump signed the Laken Riley Act into la",0.07142857142857142,live_api,select the most accurate option: what is the main focus of the environmental science center at qatar university? based on the given context.,4030385424
+43,Choose the correct answer: What are permutation-inversion groups? based on the given context.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"In mathematics, the Bernoulli numbers Bn are a sequence of rational numbers which occur frequently in analysis. The Bernoulli numbers appear in (and can be defined by) the Taylor series expansions of the tangent and hyperbolic tangent functions, in Faulhaber's formula for the sum of m-th powers of the first n positive integers, in the Euler–Maclaurin formula, and in expressions for certain values of the Riemann zeta function.
+The values of the first 20 Bernoulli numbers are given in the adjacent table. Two conventions are used in the literature, denoted here by 
+  
+    
+      
+        
+          B
+          
+            n
+          
+          
+            −
+            
+
+            
+          
+        
+      
+    
+    {\displaystyle B_{n}^{-{}}}
+  
+ and 
+  
+    
+      
+        
+          B
+          
+            n
+          
+          
+            +
+            
+
+            
+          
+        
+      
+    
+    {\displaystyle B_{n}^{+{}}}
+  
+; they differ only for n = 1, where",0.1111111111111111,live_api,choose the correct answer: what are permutation-inversion groups? based on the given context.,3656323363
+44,Choose the correct answer: What is the reason for recycling rare metals according to the United Nations?,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will lower in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Multiple methods have been proposed for the recycling of CRT glass. The methods involve thermal, mechanical and chemical processes. All proposed methods remove the lead oxide content from the glass. Some companies operated furnaces to separate the lead from the glass. A coalition called the Recytube project was once formed by several European companies to devise a method to recycle CRTs. The phosphors used in CRTs often contain rare earth metals. A CRT contains about 7 grams of phosphor.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",0.7,local,choose the correct answer: what is the reason for recycling rare metals according to the united nations?,1195933413
+45,Determine the correct option: What was Pierre de Fermat's solution to the problem of refraction? among the listed options.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.",0.5,local,determine the correct option: what was pierre de fermat's solution to the problem of refraction? among the listed options.,4250049885
+46,Identify the correct statement: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level? based on the given context.,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,identify the correct statement: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level? based on the given context.,1599819197
+47,Which of the following is correct? What is the Ramsauer-Townsend effect? carefully.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a non-noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a noble gas. It requires the wave framework of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a non-noble gas. It requires the wave principle of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of electrons by atoms of any gas. It can be explained by classical mechanics.,B,"Visualization
+To demonstrate the Coriolis effect, a parabolic turntable can be used.
+On a flat turntable, the inertia of a co-rotating object forces it off the edge. However, if the turntable surface has the correct paraboloid (parabolic bowl) shape (see the figure) and rotates at the corresponding rate, the force components shown in the figure make the component of gravity tangential to the bowl surface exactly equal to the centripetal force necessary to keep the object rotating at its velocity and radius of curvature (assuming no friction). (See banked turn.) This carefully contoured surface allows the Coriolis force to be displayed in isolation.When a container of fluid is rotating on a turntable, the surface of the fluid naturally assumes the correct parabolic shape. This fact may be exploited to make a parabolic turntable by using a fluid that sets after several hours, such as a synthetic resin. For a video of the Coriolis effect on such a parabolic surface, see Geophysical fluid dynamics lab demonstration  John Marshall, Massachusetts Institute of Technology.For a java applet of the Coriolis effect on such a parabolic surface, see Brian Fiedler  School of Meteorology at the University of Oklahoma.",0.42857142857142855,local,which of the following is correct? what is the ramsauer-townsend effect? carefully.,537048311
+48,Choose the correct answer: What is the Liouville density? among the listed options.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.25,local,choose the correct answer: what is the liouville density? among the listed options.,1313435490
+49,What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics?,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a system of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the system. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a system of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.",0.8888888888888888,local,what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics?,717059929
+50,Select the most accurate option: What is the relationship between dielectric loss and the transparency of a material?,"Dielectric loss in a material can cause refraction, which can lower the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can enhance the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can boost the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+Most commonly, the term constitution refers to a set of rules and principles that define the nature and extent of government. Most constitutions seek to regulate the relationship between institutions of the state, in a basic sense the relationship between the executive, legislature and the judiciary, but also the relationship of institutions within those branches. For example, executive branches can be divided into a head of government, government departments/ministries, executive agencies and a civil service/administration. Most constitutions also attempt to define the relationship between individuals and the state, and to establish the broad rights of individual citizens. It is thus the most basic law of a territory from which all the other laws and rules are hierarchically derived; in some territories it is in fact called ""Basic Law"".
+
+Liability for payment of an award of damages is established when the claimant proves, on the balance of probabilities, that a defendant's wrongful act caused a tangible, harm, loss or injury to the plaintiff. Once that threshold is met, the plaintiff is entitled to some amount of recovery for that loss or injury. No recovery is not an option. The court must then assess the amount of compensation attributable to the harmful acts of the defendant.See, e.g., the U.S. Supreme Court cases of  and  The amount of damages a plaintiff would recover is usually measured on a ""loss of bargain"" basis, also known as expectation loss,airSlate Legal Forms, Inc. d/b/a USLegal, Loss of Bargain Law and Legal Definition, accessed 10 December 2022 or ""economic loss"". This concept reflects the difference between ""the value of what has been received and its value as represented"".Supreme Court of Texas, Nobility Homes of Texas Inc. v. Shivers, Casetext, published 5 October 1977, accessed 10 December 2022",0.7,local,select the most accurate option: what is the relationship between dielectric loss and the transparency of a material?,1233399041
+51,Which of the following is correct? What is the reason for the stochastic nature of all observed resistance-switching processes? from the following choices.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"Over the years, there have been many objections to aspects of Copenhagen-type interpretations, including the discontinuous and stochastic nature of the ""observation"" or ""measurement"" process, the difficulty of defining what might count as a measuring device, and the seeming reliance upon classical physics in describing such devices. Still, including all the variations, the interpretation remains one of the most commonly taught.See, for example:
+
+Some systems are also stochastic, either in the input parameters such as an oscillator with a random force, or in the initial conditions, or in the predicted variables as in a Stochastic differential equation. In that random events also affect the evolution of the state variables, and this includes stochastic jump processes which are not continuos, a prototype example of a stochastic dynamical system are stock prices.
+
+Antibiotic Awareness Week 
+The World Health Organization has promoted the first World Antibiotic Awareness Week running from 16 to 22 November 2015. The aim of the week is to increase global awareness of antibiotic resistance. It also wants to promote the correct usage of antibiotics across all fields in order to prevent further instances of antibiotic resistance.",0.5833333333333334,local,which of the following is correct? what is the reason for the stochastic nature of all observed resistance-switching processes? from the following choices.,1622082125
+52,"Determine the correct option: What is the reason behind the designation of Class L dwarfs, and what is their color and composition? among the listed options.","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"An asteroid is a minor planet—an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified comet—that orbits within the inner Solar System or is co-orbital with Jupiter (Trojan asteroids). Asteroids are rocky, metallic, or icy bodies with no atmosphere, and are broadly classified into C-type (carbonaceous), M-type (metallic), or S-type (silicaceous). The size and shape of asteroids vary significantly, ranging from small rubble piles under a kilometer across to Ceres, a dwarf planet almost 1000 km in diameter. A body is classified as a comet, not an asteroid, if it shows a coma (tail) when warmed by solar radiation, although recent observations suggest a continuum between these types of bodies.
+Of the roughly one million known asteroids, the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 astronomical units (AU) from the Sun, in a region known as the main asteroid belt. The total mass of all the asteroids",0.0,live_api,"determine the correct option: what is the reason behind the designation of class l dwarfs, and what is their color and composition? among the listed options.",356156378
+53,Which of the following is correct? What are the two main interpretations for the disparity between the presence of matter and antimatter in the observable universe? among the listed options.,"The universe began with a small preference for matter, or it was originally perfectly asymmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with a small preference for antimatter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with equal amounts of matter and antimatter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with a small preference for matter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of matter over time.","The universe began with equal amounts of matter and antimatter, or it was originally perfectly asymmetric, but a set of phenomena contributed to a small imbalance in favor of matter over time.",D,"There is strong evidence that the observable universe is composed almost entirely of ordinary matter, as opposed to an equal mixture of matter and antimatter. This asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics. The process by which this inequality between matter and antimatter particles is hypothesised to have occurred is called baryogenesis.
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.
+
+Each particle of matter has a corresponding antimatter particle with the opposite electrical charge. Thus, the positron is a positively charged antielectron and the antiproton is a negatively charged equivalent of a proton. When a matter and corresponding antimatter particle meet, they annihilate each other. Because of this, along with an imbalance between the number of matter and antimatter particles, the latter are rare in the universe. The first causes of this imbalance are not yet fully understood, although theories of baryogenesis may offer an explanation. As a result, no antimatter atoms have been discovered in nature. In 1996, the antimatter counterpart of the hydrogen atom (antihydrogen) was synthesized at the CERN laboratory in Geneva.",0.375,local,which of the following is correct? what are the two main interpretations for the disparity between the presence of matter and antimatter in the observable universe? among the listed options.,5565697
+54,Choose the correct answer: What happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,"The excess base metal will often solidify, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often crystallize-out, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often dissolve, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often liquefy, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often evaporate, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.",B,No match found.,0.0,live_api,choose the correct answer: what happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,42073631
+55,Identify the correct statement: What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? carefully.,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,identify the correct statement: what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? carefully.,3731827520
+56,Determine the correct option: What is the Penrose process? carefully.,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.6666666666666666,local,determine the correct option: what is the penrose process? carefully.,4282274494
+57,Pick the best possible answer: What is a trophic level in an ecological pyramid? from the following choices.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecoframework.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.",0.4,local,pick the best possible answer: what is a trophic level in an ecological pyramid? from the following choices.,3988149771
+58,Identify the correct statement: What is the relationship between chemical potential and quarks/antiquarks? based on the given context.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a mechanism. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a framework. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a framework. Higher μ indicates a higher density of quarks.",A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+where the n is the number of up and down quarks and antiquarks.
+
+where
+  is the number of constituent quarks, and
+  is the number of constituent antiquarks.",0.6666666666666666,local,identify the correct statement: what is the relationship between chemical potential and quarks/antiquarks? based on the given context.,2865553947
+59,"Which of the following is correct? Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields?","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.
+
+An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.",0.5625,local,"which of the following is correct? which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields?",1820243334
+60,"Identify the correct statement: What are amorphous ferromagnetic metallic alloys, and what are their advantages?","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,"Graphene () is a variety of the element carbon which occurs naturally in small amounts. In graphene, the carbon forms a sheet of interlocked atoms as hexagons one carbon atom thick. The result resembles the face of a honeycomb. When many hundreds of graphene layers build up, they are called graphite.
+In technical terms, graphene is a carbon allotrope consisting of a single layer of atoms arranged in a honeycomb planar nanostructure. The name ""graphene"" is derived from ""graphite"" and the suffix  -ene, indicating the presence of double bonds within the carbon structure.
+Graphene is known for its exceptionally high tensile strength, electrical conductivity, transparency, and being the thinnest two-dimensional material in the world. Despite the nearly transparent nature of a single graphene sheet, graphite (formed from stacked layers of graphene) appears black because it absorbs all visible light wavelengths. On a microscopic scale, graphene is the strongest material ever measured.
+
+The ex",0.0,live_api,"identify the correct statement: what are amorphous ferromagnetic metallic alloys, and what are their advantages?",3103633264
+61,Choose the correct answer: What is the origin of the radio emission observed from supernova remnants? from the following choices.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,The following scientific events occurred in 2023.,0.09090909090909091,live_api,choose the correct answer: what is the origin of the radio emission observed from supernova remnants? from the following choices.,421973543
+62,Pick the best possible answer: What is the purpose of the proximity-focusing design in a RICH detector? among the listed options.,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"In American television in 2018, notable events included television show finales, cancellations, and information about controversies and carriage disputes.",0.0,live_api,pick the best possible answer: what is the purpose of the proximity-focusing design in a rich detector? among the listed options.,1883893698
+63,Select the most accurate option: What are the four qualitative levels of crystallinity described by geologists? based on the given context.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.0,live_api,select the most accurate option: what are the four qualitative levels of crystallinity described by geologists? based on the given context.,919201329
+64,Select the most accurate option: What is the piezoelectric strain coefficient for AT-cut quartz crystals? from the following choices.,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,No match found.,0.0,live_api,select the most accurate option: what is the piezoelectric strain coefficient for at-cut quartz crystals? from the following choices.,2778701206
+65,Which of the following is correct? What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? from the following choices.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"Although the semi-localized textbook σ-π separation model describes the bonding of allene using a pair of localized orthogonal π orbitals, the full molecular orbital description of the bonding is more subtle.  The symmetry-correct doubly-degenerate HOMOs of allene (adapted to the D2d point group) can either be represented by a pair of orthogonal MOs or as twisted helical linear combinations of these orthogonal MOs.  The symmetry of the system and the degeneracy of these orbitals imply that both descriptions are correct (in the same way that there are infinitely many ways to depict the doubly-degenerate HOMOs and LUMOs of benzene that correspond to different choices of eigenfunctions in a two-dimensional eigenspace).  However, this degeneracy is lifted in substituted allenes, and the helical picture becomes the only symmetry-correct description for the HOMO and HOMO–1 of the C2-symmetric . This qualitative MO description extends to higher odd-carbon cumulenes (e.g., 1,2,3,4-pentatetraene).
+
+In quantum phase transitions,  the temperature is set to absolute zero, and the non-thermal control parameter, such as pressure or magnetic field,  causes the phase transitions when order is destroyed by quantum fluctuations originating from the Heisenberg uncertainty principle. Here, the different quantum phases of the system refer to distinct ground states of the Hamiltonian matrix.  Understanding the behavior of quantum phase transition is important in the difficult tasks of explaining the properties of rare-earth magnetic insulators, high-temperature superconductors, and other substances.",0.5833333333333334,local,which of the following is correct? what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? from the following choices.,2380575198
+66,Choose the correct answer: What is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,No match found.,0.0,live_api,choose the correct answer: what is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,850247447
+67,Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect?,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.",0.5454545454545454,local,who was the first to determine the velocity of a star moving away from the earth using the doppler effect?,1302558154
+68,Identify the correct statement: What is the role of axioms in a formal concept? from the following choices.,"Basis statements called axioms form the foundation of a formal concept and, together with the deducing rules, help in deriving a set of statements called theorems using proof concept.",Axioms are supplementary statements added to a formal concept that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal framework, providing additional perspective to theorems derived from the framework.",The axioms in a concept are used for experimental validation of the theorems derived from the statements in the concept.,"The axioms in a formal framework are added to prove that the statements derived from the framework are true, irrespective of their validity in the real world.",A,"In addition to familiar number systems such as the rationals, there are other, less immediate examples of fields. The following example is a field consisting of four elements called , , , and . The notation is chosen such that  plays the role of the additive identity element (denoted 0 in the axioms above), and  is the multiplicative identity (denoted  in the axioms above). The field axioms can be verified by using some more field theory, or by direct computation. For example,
+ , which equals , as required by the distributivity.
+
+In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.
+
+Experimental economics has promoted the use of scientifically controlled experiments. This has reduced the long-noted distinction of economics from natural sciences because it allows direct tests of what were previously taken as axioms. In some cases these have found that the axioms are not entirely correct.",0.5555555555555556,local,identify the correct statement: what is the role of axioms in a formal concept? from the following choices.,1378411730
+69,Pick the best possible answer: What is the definition of Atomristor? among the listed options.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+Thus, the ""seven deadly sins"" can be defined intensionally as those singled out by Pope Gregory I as particularly destructive of the life of grace and charity within a person, thus creating the threat of eternal damnation. An extensional definition, on the other hand, would be the list of wrath, greed, sloth, pride, lust, envy, and gluttony. In contrast, while an intensional definition of ""prime minister"" might be ""the most senior minister of a cabinet in the executive branch of parliamentary government"", an extensional definition is not possible since it is not known who the future prime ministers will be (even though all prime ministers from the past and present can be listed).
+
+Reprinted in The Undecidable, p. 223ff. Herein is Rosser's famous definition of ""effective method"": ""...a method each step of which is precisely predetermined and which is certain to produce the answer in a finite number of steps... a machine which will then solve any problem of the set with no human intervention beyond inserting the question and (later) reading the answer"" (p. 225–226, The Undecidable)",0.5555555555555556,local,pick the best possible answer: what is the definition of atomristor? among the listed options.,238473999
+70,Pick the best possible answer: What is the Liouville density? from the following choices.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"In the Hamiltonian formalism, given a coordinate it is possible to derive the appropriate (generalized) momentum such that the associated volume is preserved by the flow.  The volume is said to be computed by the Liouville measure.",0.25,local,pick the best possible answer: what is the liouville density? from the following choices.,1328669194
+71,Which of the following is correct? What is the Einstein@Home project?,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"Criticism
+Incompleteness and indeterminism
+Einstein was an early and persistent supporter of objective reality. Bohr and Heisenberg advanced the position that no physical property could be understood without an act of measurement, while Einstein refused to accept this. Abraham Pais recalled a walk with Einstein when the two discussed quantum mechanics: ""Einstein suddenly stopped, turned to me and asked whether I really believed that the moon exists only when I look at it."" While Einstein did not doubt that quantum mechanics was a correct physical theory in that it gave correct predictions, he maintained that it could not be a complete theory. The most famous product of his efforts to argue the incompleteness of quantum theory is the Einstein–Podolsky–Rosen thought experiment, which was intended to show that physical properties like position and momentum have values even if not measured. The argument of EPR was not generally persuasive to other physicists.
+
+Following the discovery of the recession of the galaxies by Edwin Hubble in 1929, Einstein abandoned his static model of the universe, and proposed two dynamic models of the cosmos, the Friedmann–Einstein universe of 1931Einstein (1931). and the Einstein–de Sitter universe of 1932.Einstein & de Sitter (1932). In each of these models, Einstein discarded the cosmological constant, claiming that it was ""in any case theoretically unsatisfactory"".
+
+Einstein never fully accepted quantum mechanics. While he recognized that it made correct predictions, he believed a more fundamental description of nature must be possible. Over the years he presented multiple arguments to this effect, but the one he preferred most dated to a debate with Bohr in 1930. Einstein suggested a thought experiment in which two objects are allowed to interact and then moved apart a great distance from each other. The quantum-mechanical description of the two objects is a mathematical entity known as a wavefunction. If the wavefunction that describes the two objects before their interaction is given, then the Schrödinger equation provides the wavefunction that describes them after their interaction. But because of what would later be called quantum entanglement, measuring one object would lead to an instantaneous change of the wavefunction describing the other object, no matter how far away it is. Moreover, the choice of which measurement to perform upon the first object would affect what wavefunction could result for the second object. Einstein reasoned that no influence could propagate from the first object to the second instantaneously fast. Indeed, he argued, physics depends on being able to tell one thing apart from another, and such instantaneous influences would call that into question. Because the true ""physical condition"" of the second object could not be immediately altered by an action done to the first, Einstein concluded, the wavefunction could not be that true physical condition, only an incomplete description of it.",0.6666666666666666,local,which of the following is correct? what is the einstein@home project?,1250105807
+72,Which of the following is correct? What is Martin Heidegger's view on the relationship between time and human existence? among the listed options.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Martin Heidegger is the best known of Husserl's students, the one whom Husserl chose as his successor at Freiburg. Heidegger's magnum opus Being and Time was dedicated to Husserl. They shared their thoughts and worked alongside each other for over a decade at the University of Freiburg, Heidegger being Husserl's assistant during 1920–1923.Kockelmans, ""Introduction [Martin Heidegger]"" 267–276, 273, in Kockelmans, editor, Phenomenology (1967). Heidegger's early work followed his teacher, but with time he began to develop new insights distinctively variant. Husserl became increasingly critical of Heidegger's work, especially in 1929, and included pointed criticism of Heidegger in lectures he gave during 1931.See above subsection ""Heidegger and the Nazi era"". Heidegger, while acknowledging his debt to Husserl, followed a political position offensive and harmful to Husserl after the Nazis came to power in 1933, Husserl being of Jewish origin and Heidegger infamously being then a Nazi proponent.The multivalent, including the ""horrifying"", aspects of Heidegger in a parallel context are recounted in Peter Eli Gordon, Rosensweig and Heidegger: Between Judaism and German Philosophy (University of California 2003) at 13–14 (Heidegger and Rosensweig's early ""kinship"" with him). ""In 1929, however, one could still read Heidegger's philosophy without being drawn into a controversy concerning its relationship to National Socialism, antisemitism, and the like. The German philosophical world as a whole still cloaked itself in a mantle of relative innocence."" Gordon (2003) at 303–304. ""Rosensweig's work represents the culmination of what is often called the German Jewish Tradition."" Gordon, ""Preface"" (2003) at xix. Academic discussion of Husserl and Heidegger is extensive.
+
+In continental philosophy, the school of phenomenology studied the immediate experience of art. For example, it examined how artworks can depict unreal objects, how imagination is involved in the process, and how art can reveal features of reality. This tradition is closely related to existentialist aesthetics, which views artworks as expressions of human freedom that can authentically portray central aspects of the human condition. The philosophy of Martin Heidegger (1889–1976) influenced both traditions. He criticized the focus on disinterested pleasure found in modern philosophy of art, arguing that artworks can reveal truths about human existence and provide new perspectives of understanding. Heidegger's student Hans-Georg Gadamer (1900–2002) further investigated the relation between art and truth, examining aesthetic experience and traditional theories through phenomenological analysis and hermeneutic interpretation.
+
+Ayer was a strong critic of the German philosopher Martin Heidegger. As a logical positivist, Ayer was in conflict with Heidegger's vast, overarching theories of existence. Ayer considered them completely unverifiable through empirical demonstration and logical analysis, and this sort of philosophy an unfortunate strain in modern thought. He considered Heidegger the worst example of such philosophy, which Ayer believed entirely useless. In Philosophy in the Twentieth Century, Ayer accuses Heidegger of ""surprising ignorance"" or ""unscrupulous distortion"" and ""what can fairly be described as charlatanism"".",0.6,local,which of the following is correct? what is martin heidegger's view on the relationship between time and human existence? among the listed options.,4144693725
+73,Determine the correct option: What did Newton's manuscripts of the 1660s show? among the listed options.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,"African-American history started with the forced transportation of Sub-Saharan Africans to North America in the 16th and 17th centuries. The European colonization of the Americas, and the resulting Atlantic slave trade, encompassed a large-scale transportation of enslaved Africans across the Atlantic. Of the roughly 10–12 million Africans who were sold in the Atlantic slave trade, either to Europe or the Americas, approximately 388,000 were sent to North America. After arriving in various European colonies in North America, the enslaved Africans were sold to European colonists, primarily to work on cash crop plantations. A group of enslaved Africans arrived in the English Virginia Colony in 1619, marking the beginning of slavery in the colonial history of the United States; by 1776, roughly 20% of the British North American population was of Sub-Saharan African descent, both free and enslaved.
+During the American Revolutionary War, in which the Thirteen Colonies gained independence and",0.0,live_api,determine the correct option: what did newton's manuscripts of the 1660s show? among the listed options.,2876048264
+74,Pick the best possible answer: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? from the following choices.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's principle of general relativity.",C,No match found.,0.0,live_api,pick the best possible answer: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? from the following choices.,3514437349
+75,Pick the best possible answer: What is the metallicity of Kapteyn's star estimated to be?,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.",0.4,local,pick the best possible answer: what is the metallicity of kapteyn's star estimated to be?,365407927
+76,"Choose the correct answer: What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope? based on the given context.","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.",0.3888888888888889,local,"choose the correct answer: what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope? based on the given context.",1863177038
+77,Determine the correct option: What was Pierre de Fermat's solution to the problem of refraction? based on the given context.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.6428571428571429,local,determine the correct option: what was pierre de fermat's solution to the problem of refraction? based on the given context.,2794673698
+78,"Choose the correct answer: Who proposed the concept of ""maximal acceleration""? based on the given context.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.
+
+For a given speed , the magnitude of this geometrically caused acceleration (centripetal acceleration) is inversely proportional to the radius  of the circle, and increases as the square of this speed: 
+ For a given angular velocity , the centripetal acceleration is directly proportional to radius . This is due to the dependence of velocity  on the radius . 
+Expressing centripetal acceleration vector in polar components, where  is a vector from the centre of the circle to the particle with magnitude equal to this distance, and considering the orientation of the acceleration towards the center, yields
+As usual in rotations, the speed  of a particle may be expressed as an angular speed with respect to a point at the distance  as
+Thus",0.6,local,"choose the correct answer: who proposed the concept of ""maximal acceleration""? based on the given context.",779237162
+79,Select the most accurate option: What is the definition of an improper rotation? carefully.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"The accurate flight of an arrow depends on its fletchings. The arrow's manufacturer (a ""fletcher"") can arrange fletching to cause the arrow to rotate along its axis. This improves accuracy by evening pressure buildups that would otherwise cause the arrow to ""plane"" on the air in a random direction after shooting. Even with a carefully made arrow, the slightest imperfection or air movement causes some unbalanced turbulence in air flow. Consequently, rotation creates an equalization of such turbulence, which, overall, maintains the intended direction of flight i.e. accuracy. This rotation is not to be confused with the rapid gyroscopic rotation of a rifle bullet. Fletching that is not arranged to induce rotation still improves accuracy by causing a restoring drag any time the arrow tilts from its intended direction of travel.",0.375,local,select the most accurate option: what is the definition of an improper rotation? carefully.,3059153008
+80,"Identify the correct statement: What is the meaning of the term ""horror vacui""? among the listed options.",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate mechanism.,The spatial-corporeal component of Descartes' metaphysics.,B,"The term ""Mitteleuropa"" conjures up negative historical associations among some people although the Germans have not played an exclusively negative role in the region. Most Central European Jews embraced the enlightened German humanistic culture of the 19th century. Jews at the turn of the 20th century became representatives of what many consider to be Central European culture at its best, but the Nazi conceptualisation of ""Mitteleuropa"" sought to destroy that culture. The term ""Mitteleuropa"" is widely used in German education and media without a negative meaning, especially since the end of communism. Many people from the new states of Germany do not identify themselves as being part of Western Europe and therefore prefer the term ""Mitteleuropa"".
+
+Historically a barrister might use the honorific, Esquire. Even though the term barrister-at-law is sometimes seen, and was once very common, it has never been formally correct in England and Wales. Barrister is the only correct nomenclature.This was confirmed by the Professional Conduct Committee of the Bar Council when it changed its rules on the usage of the description by individuals in 1970, Annual Statement of the Bar Council, 1969/70.
+
+Substitution is replacing the terms in an expression to create a new expression. Substituting 3 for  in the expression  makes a new expression  with meaning . Substituting the terms of a statement makes a new statement. When the original statement is true independently of the values of the terms, the statement created by substitutions is also true. Hence, definitions can be made in symbolic terms and interpreted through substitution: if  is meant as the definition of  as the product of  with itself, substituting  for  informs the reader of this statement that  means . Often it's not known whether the statement is true independently of the values of the terms. And, substitution allows one to derive restrictions on the possible values, or show what conditions the statement holds under. For example, taking the statement , if  is substituted with , this implies , which is false, which implies that if  then  cannot be .",0.6,local,"identify the correct statement: what is the meaning of the term ""horror vacui""? among the listed options.",2354968104
+81,Determine the correct option: What is the purpose of obtaining surgical resection specimens? based on the given context.,"To remove an entire diseased area or organ for definitive surgical treatment of a disease, with pathological analysis of the specimen used to confirm the diagnosis.",To perform visual and microscopic tests on tissue samples using automated analysers and cultures.,To work in close collaboration with medical technologists and hospital administrations.,To administer a variety of tests of the biophysical properties of tissue samples.,To obtain bodily fluids such as blood and urine for laboratory analysis of disease diagnosis.,A,No match found.,0.0,live_api,determine the correct option: what is the purpose of obtaining surgical resection specimens? based on the given context.,1409239970
+82,What is the relationship between the Wigner function and the density matrix operator?,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+Wigner received a request from Arnold Sommerfeld to work at the University of Göttingen as an assistant to the great mathematician David Hilbert. This proved a disappointment, as the aged Hilbert's abilities were failing, and his interests had shifted to logic. Wigner nonetheless studied independently. He laid the foundation for the theory of symmetries in quantum mechanics and in 1927 introduced what is now known as the Wigner D-matrix. Wigner and Hermann Weyl were responsible for introducing group theory into quantum mechanics. The latter had written a standard text, Group Theory and Quantum Mechanics (1928), but it was not easy to understand, especially for younger physicists. Wigner's Group Theory and Its Application to the Quantum Mechanics of Atomic Spectra (1931) made group theory accessible to a wider audience.
+
+The relationship between the angular momentum operator and the rotation operators is the same as the relationship between Lie algebras and Lie groups in mathematics. The close relationship between angular momentum and rotations is reflected in Noether's theorem that proves that angular momentum is conserved whenever the laws of physics are rotationally invariant.",0.8571428571428571,local,what is the relationship between the wigner function and the density matrix operator?,3224521562
+83,Pick the best possible answer: What was Pierre de Fermat's solution to the problem of refraction?,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Pierre de Fermat also pioneered the development of analytic geometry. Although not published in his lifetime, a manuscript form of Ad locos planos et solidos isagoge (Introduction to Plane and Solid Loci) was circulating in Paris in 1637, just prior to the publication of Descartes' Discourse.Pierre de Fermat, Varia Opera Mathematica d. Petri de Fermat, Senatoris Tolosani (Toulouse, France:  Jean Pech, 1679), ""Ad locos planos et solidos isagoge,"" pp. 91–103. ""Eloge de Monsieur de Fermat""  (Eulogy of Mr. de Fermat), Le Journal des Scavans, 9 February 1665, pp. 69–72.  From p. 70:  ""Une introduction aux lieux, plans & solides; qui est un traité analytique concernant la solution des problemes plans & solides, qui avoit esté veu devant que M. des Cartes eut rien publié sur ce sujet.""  (An introduction to loci, plane and solid; which is an analytical treatise concerning the solution of plane and solid problems, which was seen before Mr. des Cartes had published anything on this subject.) Clearly written and well received, the Introduction also laid the groundwork for analytical geometry. The key difference between Fermat's and Descartes' treatments is a matter of viewpoint: Fermat always started with an algebraic equation and then described the geometric curve that satisfied it, whereas Descartes started with geometric curves and produced their equations as one of several properties of the curves. As a consequence of this approach, Descartes had to deal with more complicated equations and he had to develop the methods to work with polynomial equations of higher degree. It was Leonhard Euler who first applied the coordinate method in a systematic study of space curves and surfaces.",0.5833333333333334,local,pick the best possible answer: what was pierre de fermat's solution to the problem of refraction?,78887438
+84,Select the most accurate option: What is the significance of probability amplitudes in quantum mechanics?,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+Consider a quantum circuit , which consists of  gates, , where each  comes from a universal gate set and acts on at most two qubits.
+To understand what the sum of histories is, we visualize the evolution of a quantum state given a quantum circuit as a tree. The root is the input , and each node in the tree has  children, each representing a state in . The weight on a tree edge from a node in -th level representing a state  to a node in -th level  representing a state  is , the amplitude of  after applying  on . The transition amplitude of a root-to-leaf path is the product of all the weights on the edges along the path. To get the probability of the final state being , we sum up the amplitudes of all root-to-leave paths that ends at a node representing .
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).",0.5555555555555556,local,select the most accurate option: what is the significance of probability amplitudes in quantum mechanics?,1849934563
+85,"Which of the following is correct? Who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.7142857142857143,local,"which of the following is correct? who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",4078120932
+86,Identify the correct statement: What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? from the following choices.,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,identify the correct statement: what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? from the following choices.,2984072589
+87,Which of the following is correct? What is the Kutta condition? from the following choices.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"During the time of the first flights, Frederick W. Lanchester, Martin Kutta, and Nikolai Zhukovsky independently created theories that connected circulation of a fluid flow to lift. Kutta and Zhukovsky went on to develop a two-dimensional wing theory. Expanding upon the work of Lanchester, Ludwig Prandtl is credited with developing the mathematics behind thin-airfoil and lifting-line theories as well as work with boundary layers.
+
+An 88 level-number declares a  (a so-called 88-level) which is true when its parent data item contains one of the values specified in its  clause. For example, the following code defines two 88-level condition-name items that are true or false depending on the current character data value of the  data item. When the data item contains a value of , the condition-name  is true, whereas when it contains a value of  or , the condition-name  is true. If the data item contains some other value, both of the condition-names are false.
+       01  wage-type          PIC X.
+           88  wage-is-hourly VALUE ""H"".
+           88  wage-is-yearly VALUE ""S"", ""Y"".
+
+Shoghi Effendi, the head of the religion from 1921 to 1957, wrote the following summary of what he considered to be the distinguishing principles of Baháʼu'lláh's teachings, which, he said, together with the laws and ordinances of the Kitáb-i-Aqdas constitute the bedrock of the Baháʼí Faith:",0.6666666666666666,local,which of the following is correct? what is the kutta condition? from the following choices.,1063434114
+88,Identify the correct statement: What is the role of CYCLOIDEA genes in the evolution of bilateral symmetry? carefully.,CYCLOIDEA genes are responsible for the selection of symmetry in the evolution of animals.,"CYCLOIDEA genes are responsible for the evolution of specialized pollinators in plants, which in turn led to the transition of radially symmetrical flowers to bilaterally symmetrical flowers.","CYCLOIDEA genes are responsible for the expression of dorsal petals in Antirrhinum majus, which control their size and shape.","CYCLOIDEA genes are responsible for the expression of transcription factors that control the expression of other genes, allowing their expression to influence developmental pathways relating to symmetry.",CYCLOIDEA genes are responsible for mutations that cause a reversion to radial symmetry.,D,"Understanding the changes that have occurred during an organism's evolution can reveal the genes needed to construct parts of the body, genes which may be involved in human genetic disorders. For example, the Mexican tetra is an albino cavefish that lost its eyesight during evolution. Breeding together different populations of this blind fish produced some offspring with functional eyes, since different mutations had occurred in the isolated populations that had evolved in different caves. This helped identify genes required for vision and pigmentation.
+
+The issue of evolution has been a point of controversy for some members of the church. The first official statement on the issue of evolution was in 1909, which marked the centennial of Charles Darwin's birth and the 50th anniversary of his masterwork, On the Origin of Species. In that year, the First Presidency, led by Joseph F. Smith as president, issued a statement reinforcing the predominant religious view of creationism, and calling human evolution one of the ""theories of men"", but falling short of declaring evolution untrue or evil.
+
+In many of his writings, Mayr rejected reductionism in evolutionary biology, arguing that evolutionary pressures act on the whole organism, not on single genes, and that genes can have different effects depending on the other genes present. He advocated a study of the whole genome, rather than of only isolated genes. After articulating the biological species concept in 1942, Mayr played a central role in the species problem debate over what was the best species concept. He staunchly defended the biological species concept against the many definitions of ""species"" that others proposed.",0.5,local,identify the correct statement: what is the role of cycloidea genes in the evolution of bilateral symmetry? carefully.,1799231277
+89,Select the most accurate option: Which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? carefully.,Planetary mechanisms cannot be categorized based on their orbital dynamics.,"Planetary structures can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the structure.",Planetary structures can only be categorized as resonant or non-resonant-interacting.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary mechanisms can only be categorized as hierarchical or non-hierarchical.,D,"The relationship between science and religion involves discussions that interconnect the study of the natural world, history, philosophy, and theology. Even though the ancient and medieval worlds did not have conceptions resembling the modern understandings of ""science"" or of ""religion"", certain elements of modern ideas on the subject recur throughout history. The pair-structured phrases ""religion and science"" and ""science and religion"" first emerged in the literature during  the 19th century. This coincided with the refining of ""science"" (from the studies of ""natural philosophy"") and of ""religion"" as distinct concepts in the preceding few centuries—partly due to professionalization of the sciences, the Protestant Reformation, colonization, and globalization. Since then the relationship between science and religion has been characterized in terms of ""conflict"", ""harmony"", ""complexity"", and ""mutual independence"", among others.
+Both science and religion are complex social and cultural en",0.0,live_api,select the most accurate option: which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? carefully.,2396769842
+90,What is the spin quantum number?,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+There is another quantity of angular momentum, called the orbital angular momentum (azimuthal quantum number ), that comes in increments of , which represent the angular moment due to quarks orbiting around each other. The total angular momentum (total angular momentum quantum number J) of a particle is therefore the combination of intrinsic angular momentum (spin) and orbital angular momentum. It can take any value from  to , in increments of 1.
++ Baryon angular momentum quantum numbers for  Spin, S Orbital angular momentum, L Total angular momentum, J Parity, P Condensed notation, JP  0    +  + 1  ,   −  −, − 2  ,   +  +, + 3  ,   −  −, −  0    +  + 1  , ,   −  −, −, − 2  , , ,   +  +, +, +, + 3  , , ,   −  −, −, −, −",1.0,local,what is the spin quantum number?,3296728929
+91,Choose the correct answer: What is the definition of an improper rotation? among the listed options.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"This article contains persons named in the Bible, specifically in the Hebrew Bible, of minor notability, about whom little or nothing is known, aside from some family connections. Here are the names which start with A-K.",0.0,live_api,choose the correct answer: what is the definition of an improper rotation? among the listed options.,2005287429
+92,Pick the best possible answer: What is the gravitomagnetic interaction? from the following choices.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general concept of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Non-deterministic computation
+In a non-deterministic model of computation, such as non-deterministic Turing machines, some choices may be made at some steps of the computation. In complexity theory, one considers all possible choices simultaneously, and the non-deterministic time complexity is the time needed, when the best choices are always made. In other words, one considers that the computation is done simultaneously on as many (identical) processors as needed, and the non-deterministic computation time is the time spent by the first processor that finishes the computation. This parallelism is partly amenable to quantum computing via superposed entangled states in running specific quantum algorithms, like e.g. Shor's algorithm for finding the prime factors of an integer.
+
+Following each question, the candidate answers: ""Yes, I believe"". If the candidates are unable to answer for themselves, the sponsors are to answer the questions.
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by",0.625,local,pick the best possible answer: what is the gravitomagnetic interaction? from the following choices.,3590305480
+93,Which of the following is correct? What is the significance of the discovery of the Crab pulsar?,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.",0.7142857142857143,local,which of the following is correct? what is the significance of the discovery of the crab pulsar?,579248725
+94,Choose the correct answer: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? from the following choices.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,choose the correct answer: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? from the following choices.,2790888069
+95,Select the most accurate option: What is the most popular explanation for the shower-curtain effect? based on the given context.,The pressure differential between the inside and outside of the shower,The lower in velocity resulting in an raise in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,No match found.,0.0,live_api,select the most accurate option: what is the most popular explanation for the shower-curtain effect? based on the given context.,1355171288
+96,Choose the correct answer: What is X-ray pulsar-based navigation (XNAV)? based on the given context.,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,choose the correct answer: what is x-ray pulsar-based navigation (xnav)? based on the given context.,4077358582
+97,Which of the following is correct? What is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? based on the given context.,Blueshifting,Redshifting,Reddening,Whitening,Yellowing,C,"Infrared radiation in the spectral distribution of a black body is usually considered a form of heat, since it has an equivalent temperature and is associated with an entropy change per unit of thermal energy. However, ""heat"" is a technical term in physics and thermodynamics and is often confused with thermal energy. Any type of electromagnetic energy can be transformed into thermal energy in interaction with matter. Thus, any electromagnetic radiation can ""heat"" (in the sense of increase the thermal energy temperature of) a material, when it is absorbed. The inverse or time-reversed process of absorption is thermal radiation. Much of the thermal energy in matter consists of random motion of charged particles, and this energy can be radiated away from the matter. The resulting radiation may subsequently be absorbed by another piece of matter, with the deposited energy heating the material.
+
+As the universe expands, both matter and radiation become diluted. However, the energy densities of radiation and matter dilute at different rates. As a particular volume expands, mass-energy density is changed only by the increase in volume, but the energy density of radiation is changed both by the increase in volume and by the increase in the wavelength of the photons that make it up. Thus the energy of radiation becomes a smaller part of the universe's total energy than that of matter as it expands. The very early universe is said to have been 'radiation dominated' and radiation controlled the deceleration of expansion. Later, as the average energy per photon becomes roughly 10 eV and lower, matter dictates the rate of deceleration and the universe is said to be 'matter dominated'. The intermediate case is not treated well analytically. As the expansion of the universe continues, matter dilutes even further and the cosmological constant becomes dominant, leading to an acceleration in the universe's expansion.
+
+Together, wave and particle effects fully explain the emission and absorption spectra of EM radiation. The matter-composition of the medium through which the light travels determines the nature of the absorption and emission spectrum. These bands correspond to the allowed energy levels in the atoms. Dark bands in the absorption spectrum are due to the atoms in an intervening medium between source and observer. The atoms absorb certain frequencies of the light between emitter and detector/eye, then emit them in all directions. A dark band appears to the detector, due to the radiation scattered out of the light beam. For instance, dark bands in the light emitted by a distant star are due to the atoms in the star's atmosphere.",0.3888888888888889,local,which of the following is correct? what is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? based on the given context.,3575109846
+98,Which of the following is correct? What is the function of the fibrous cardiac skeleton? from the following choices.,The fibrous cardiac skeleton is a structure of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+Classification 
+Cardiac glycosides can be more specifically categorized based on the plant they are derived from, as in the following list. For example, cardenolides have been primarily derived from the foxglove plants Digitalis purpurea and Digitalis lanata, while bufadienolides have been derived from the venom of the cane toad Rhinella marina (formerly known as Bufo marinus), from which they receive the ""bufo"" portion of their name. Below is a list of organisms from which cardiac glycosides can be derived.
+
+Vertical asymptotes
+The line x = a is a vertical asymptote of the graph of the function  if at least one of the following statements is true:",0.625,local,which of the following is correct? what is the function of the fibrous cardiac skeleton? from the following choices.,95847174
+99,Pick the best possible answer: What is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.38461538461538464,local,pick the best possible answer: what is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,2776061592
+100,Determine the correct option: What is the distinction between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? carefully.,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,No match found.,0.0,live_api,determine the correct option: what is the distinction between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? carefully.,1146325229
+101,Determine the correct option: What was Isaac Newton's explanation for rectilinear propagation of light? among the listed options.,"Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave concept of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave principle of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave concept of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave principle of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,"Fresnel gave the first satisfactory explanation of diffraction by straight edges, including the first satisfactory wave-based explanation of rectilinear propagation. By further supposing that light waves are purely transverse, Fresnel explained the nature of polarization. He then worked on double refraction.",0.2857142857142857,local,determine the correct option: what was isaac newton's explanation for rectilinear propagation of light? among the listed options.,1023793297
+102,Select the most accurate option: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? from the following choices.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,No match found.,0.0,live_api,select the most accurate option: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? from the following choices.,2306789843
+103,What is the butterfly effect?,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the difference between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.
+
+Differentiating types of butterfly effects 
+The concept of the butterfly effect encompasses several phenomena. The two kinds of butterfly effects, including the sensitive dependence on initial conditions, and the ability of a tiny perturbation to create an organized circulation at large distances, are not exactly the same. In Palmer et al., a new type of butterfly effect is introduced, highlighting the potential impact of small-scale processes on finite predictability within the Lorenz 1969 model. Additionally, the identification of ill-conditioned aspects of the Lorenz 1969 model points to a practical form of finite predictability. These two distinct mechanisms suggesting finite predictability in the Lorenz 1969 model are collectively referred to as the third kind of butterfly effect. The authors in  have considered Palmer et al.'s suggestions and have aimed to present their perspective without raising specific contentions.",1.0,local,what is the butterfly effect?,128899846
+104,Select the most accurate option: What is the American Petroleum Institute (API) gravity?,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,"Western Canadian Select (WCS)  is a heavy sour blend of crude oil that is one of North America's largest heavy crude oil streams  and, historically, its cheapest. It was established in December 2004 as a new heavy oil stream by EnCana (now Cenovus), Canadian Natural Resources, Petro-Canada (now Suncor) and Talisman Energy (now Repsol Oil & Gas Canada).  It is composed mostly of bitumen blended with sweet synthetic and condensate diluents and 21 existing streams of both conventional and unconventional Alberta heavy crude oils at the large Husky Midstream General Partnership terminal in Hardisty, Alberta. Western Canadian Select—the benchmark for heavy, acidic (TAN <1.1) crudes—is one of many petroleum products from the Western Canadian Sedimentary Basin oil sands. Calgary-based Husky Energy, now a subsidiary of Cenovus, had joined the initial four founders in 2015.
+Western Canadian Select (WCS) is the benchmark price for western Canadian crude blends. The price of other Canadian crude b",0.2222222222222222,live_api,select the most accurate option: what is the american petroleum institute (api) gravity?,2903290085
+105,Which of the following is correct? What is the contrast between probability mass function (PMF) and probability density function (PDF)? from the following choices.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability principle.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .
+
+which is just the Fourier transform of the probability density. The original probability density may be expressed in terms of the characteristic function, essentially by using the inverse Fourier transform:",0.5,local,which of the following is correct? what is the contrast between probability mass function (pmf) and probability density function (pdf)? from the following choices.,3647308394
+106,Identify the correct statement: What is the relevant type of coherence for the Young's double-slit interferometer? carefully.,Visibility,Coherence time,Spatial coherence,Coherence length,Diameter of the coherence area (Ac),E,"If waves are emitted from an extended source, this can lead to incoherence in the transversal direction. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherence length. In the case of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting pattern on a screen would look like two single-slit diffraction patterns.",0.4166666666666667,local,identify the correct statement: what is the relevant type of coherence for the young's double-slit interferometer? carefully.,431503629
+107,Select the most accurate option: What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? based on the given context.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.2857142857142857,local,select the most accurate option: what is the relationship between the cauchy momentum equation and the navier-stokes equation? based on the given context.,360543689
+108,Select the most accurate option: What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI? from the following choices.,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,"Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate  pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to form images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy.
+MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long, confining tube, although ""open"" MRI designs mostly",0.12,live_api,select the most accurate option: what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri? from the following choices.,1591310646
+109,Pick the best possible answer: What is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? based on the given context.,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,"At least two views of design activity are consistent with the action-centric perspective. Both involve these three basic activities:
+ In the reflection-in-action paradigm, designers alternate between ""framing"", ""making moves"", and ""evaluating moves"". ""Framing"" refers to conceptualizing the problem, i.e., defining goals and objectives. A ""move"" is a tentative design decision. The evaluation process may lead to further moves in the design.
+ In the sensemaking–coevolution–implementation framework, designers alternate between its three titular activities. Sensemaking includes both framing and evaluating moves. Implementation is the process of constructing the design object. Coevolution is ""the process where the design agent simultaneously refines its mental picture of the design object based on its mental picture of the context, and vice versa"".",0.2857142857142857,local,pick the best possible answer: what is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? based on the given context.,1679557118
+110,Select the most accurate option: What is the gravitomagnetic interaction? based on the given context.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general framework of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Sociologists representing symbolic interactionism argue that social rules are created through the interaction between the members of a society. The focus on active interaction highlights the fluid, shifting character of social rules. These are specific to the social context, a context that varies through time and place. That means a social rule changes over time within the same society. What was acceptable in the past may no longer be the case. Similarly, rules differ across space: what is acceptable in one society may not be so in another.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Windows mouse click behavior is such that the context menu doesn't open while the mouse button is pressed, but only opens the menu when the button is released, so the user has to click again to select a context menu item. This behavior differs from that of macOS and most free software GUIs.
+ In Microsoft Windows, pressing the Application key or Shift+F10 opens a context menu for the region that has focus.",0.6666666666666666,local,select the most accurate option: what is the gravitomagnetic interaction? based on the given context.,735569542
+111,What is the significance of probability amplitudes in quantum mechanics?,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+In quantum mechanics, diffraction is also described in terms of a wave, but the wavefunction represents a probability amplitude whose modulus squared is the probability of detection. The light and dark regions in diffraction patterns are then areas where the quanta are more or less likely to be detected.
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).",0.8,local,what is the significance of probability amplitudes in quantum mechanics?,1118743610
+112,Pick the best possible answer: What is a Schwarzschild black hole? carefully.,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+In 1967, Werner Israel found that the Schwarzschild solution was the only possible solution for a nonspinning, uncharged black hole, meaning that a Schwarzschild black hole would be defined by its mass alone. Similar identities were later found for Reissner-Nordstrom and Kerr black holes, defined only by their mass and their charge or spin respectively. Together, these findings became known as the no-hair theorem, which states that a stationary black hole is completely described by the three parameters of the Kerr–Newman metric: mass, angular momentum, and electric charge.
+
+Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.",0.5,local,pick the best possible answer: what is a schwarzschild black hole? carefully.,3890054250
+113,Select the most accurate option: What are the constituents of cold dark matter?,"They are unknown, but possibilities include large objects like MACHOs or new particles such as WIMPs and axions.",They are known to be black holes and Preon stars.,They are only MACHOs.,They are clusters of brown dwarfs.,They are new particles such as RAMBOs.,A,"The identity of dark matter is unknown, but there are many hypotheses about what dark matter could consist of, as set out in the table below.
++ Major dark matter hypotheses Light bosons Axions Axion-like particles Fuzzy cold dark matter Neutrinos Standard Model Sterile neutrinos Other particles Lightest supersymmetric particle Weakly interacting massive particles (WIMPs) Self-interacting dark matter Atomic dark matter Strangelet Macroscopic Primordial black holes (PBHs) (See also the accompanying slide presentation. Other massive compact halo objects (MACHOs)
+
+In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form of energy known as dark energy. Thus, dark matter constitutes 85% of the total mass, while dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy, its local density in the Solar System is much less than normal matter. The total of all the dark matter out to the orbit of Neptune would add up about 1017 kg, the same as a large asteroid. Dark matter is classified as ""cold"", ""warm"", or ""hot"" according to velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.
+
+After the recombination epoch, the slightly denser regions of the uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today. The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter. The best measurements available, from the Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold. This CDM is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about 4.6%. (See Table 8.)",0.375,local,select the most accurate option: what are the constituents of cold dark matter?,2654623940
+114,Which of the following is correct? What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere? among the listed options.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,which of the following is correct? what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere? among the listed options.,1068936122
+115,"Pick the best possible answer: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? based on the given context.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)",0.3684210526315789,local,"pick the best possible answer: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? based on the given context.",1510168444
+116,"Determine the correct option: What is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? from the following choices.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.",0.3125,local,"determine the correct option: what is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? from the following choices.",929887077
+117,Select the most accurate option: What is the definition of an improper rotation? among the listed options.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.",0.3,local,select the most accurate option: what is the definition of an improper rotation? among the listed options.,2096848036
+118,"Select the most accurate option: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters?","MOND is a framework that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a framework that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a concept that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a concept that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"select the most accurate option: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters?",3337408558
+119,Select the most accurate option: What is the result of the collapse of a cavitation bubble? among the listed options.,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a lower in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp raise in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+Cavitation in fluid mechanics and engineering normally is the phenomenon in which the static pressure of a liquid reduces to below the liquid's vapor pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, called ""bubbles"" or ""voids"", collapse and can generate shock waves that may damage machinery. As a concrete propeller example: The pressure on the suction side of the propeller blades can be very low and when the pressure falls to that of the vapour pressure of the working liquid, cavities filled with gas vapour can form. The process of the formation of these cavities is referred to as cavitation. If the cavities move into the regions of higher pressure (lower velocity), they will implode or collapse. These shock waves are strong when they are very close to the imploded bubble, but rapidly weaken as they propagate away from the implosion. Cavitation collapse is therefore a significant cause of wear in some engineering contexts. Collapsing voids that implode near to a hard surface cause cyclic stress through repeated implosion. This results in surface fatigue of the material, causing a type of damage also called ""cavitation damage"" or ""cavitation erosion"". The most common examples of this kind of wear are to pump impellers, and pipe bends where a sudden change in the direction of fast moving liquid occurs.",0.45454545454545453,local,select the most accurate option: what is the result of the collapse of a cavitation bubble? among the listed options.,1356063660
+120,Identify the correct statement: What is the Liouville density? based on the given context.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is the liouville density? based on the given context.,1147573387
+121,Pick the best possible answer: What is the metallicity of Kapteyn's star estimated to be?,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.",0.4,local,pick the best possible answer: what is the metallicity of kapteyn's star estimated to be?,365407927
+122,What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes?,The atmosphere is a system that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized systems and time-varying forcing from recurrent seasons.",The atmosphere is a system that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic system with no order or organization.,The atmosphere is a completely ordered system with no chaos or randomness.,B,No match found.,0.0,live_api,what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes?,2046948469
+123,What is the difference between probability mass function (PMF) and probability density function (PDF)?,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability theory.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .
+
+The special case when  and  is called the standard Cauchy distribution with the probability density function",0.5,local,what is the difference between probability mass function (pmf) and probability density function (pdf)?,639511376
+124,What is the role of methane in Fischer-Tropsch processes?,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,"With regard to synthetic fuels, an old but still important process is the Fischer–Tropsch synthesis of hydrocarbons from synthesis gas, which itself is processed via water-gas shift reactions, catalyzed by iron. The Sabatier reaction produces methane from carbon dioxide and hydrogen. Biodiesel and related biofuels require processing via both inorganic and biocatalysts.
+
+Methanol is produced by the hydrogenation of carbon monoxide. In a related reaction, the hydrogenation of carbon monoxide is coupled to C−C bond formation, as in the Fischer–Tropsch process where carbon monoxide is hydrogenated to liquid hydrocarbon fuels. This technology allows coal or biomass to be converted to diesel.
+
+Advent of industrial chemistry
+Carbon monoxide gained recognition as an essential reagent in the 1900s.  Three industrial processes illustrate its evolution in industry.  In the Fischer–Tropsch process, coal and related carbon-rich feedstocks are converted into liquid fuels via the intermediacy of CO.  Originally developed as part of the German war effort to compensate for their lack of domestic petroleum, this technology continues today.  Also in Germany, a mixture of CO and hydrogen was found to combine with olefins to give aldehydes.  This process, called hydroformylation, is used to produce many large scale chemicals such as surfactants as well as specialty compounds that are popular fragrances and drugs.  For example, CO is used in the production of vitamin A. In a third major process, attributed to researchers at Monsanto, CO combines with methanol to give acetic acid. Most acetic acid is produced by the Cativa process.  Hydroformylation and the acetic acid syntheses are two of myriad carbonylation processes.",0.8,local,what is the role of methane in fischer-tropsch processes?,1216829479
+125,Select the most accurate option: What are the Navier-Stokes equations? from the following choices.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.4444444444444444,local,select the most accurate option: what are the navier-stokes equations? from the following choices.,3805101762
+126,Select the most accurate option: What happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,"The excess base metal will often solidify, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often crystallize-out, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often dissolve, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often liquefy, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often evaporate, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.",B,No match found.,0.0,live_api,select the most accurate option: what happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,1451648230
+127,Select the most accurate option: What is the main sequence in astronomy? from the following choices.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar framework.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"An option ROM should normally return to the BIOS after completing its initialization process. Once (and if) an option ROM returns, the BIOS continues searching for more option ROMs, calling each as it is found, until the entire option ROM area in the memory space has been scanned. It is possible that an option ROM will not return to BIOS, pre-empting the BIOS's boot sequence altogether.
+
+Use in astronomy 
+While the total number of ""catalytic"" nuclei are conserved in the cycle, in stellar evolution the relative proportions of the nuclei are altered.  When the cycle is run to equilibrium, the ratio of the carbon-12/carbon-13 nuclei is driven to 3.5, and nitrogen-14 becomes the most numerous nucleus, regardless of initial composition.  During a star's evolution, convective mixing episodes moves material, within which the CNO cycle has operated, from the star's interior to the surface, altering the observed composition of the star. Red giant stars are observed to have lower carbon-12/carbon-13 and carbon-12/nitrogen-14 ratios than do main sequence stars, which is considered to be convincing evidence for the operation of the CNO cycle.",0.5555555555555556,local,select the most accurate option: what is the main sequence in astronomy? from the following choices.,894489178
+128,Identify the correct statement: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? carefully.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,identify the correct statement: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? carefully.,1240856153
+129,Select the most accurate option: What is the origin of the radio emission observed from supernova remnants? carefully.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,The following scientific events occurred in 2023.,0.0,live_api,select the most accurate option: what is the origin of the radio emission observed from supernova remnants? carefully.,1076785087
+130,"Pick the best possible answer: What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope? from the following choices.","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.",0.3888888888888889,local,"pick the best possible answer: what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope? from the following choices.",1014207268
+131,"Determine the correct option: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids?",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"determine the correct option: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids?",4265630431
+132,Choose the correct answer: What is the distinction between natural convection and forced convection? among the listed options.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,No match found.,0.0,live_api,choose the correct answer: what is the distinction between natural convection and forced convection? among the listed options.,3152830363
+133,Identify the correct statement: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? based on the given context.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,identify the correct statement: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? based on the given context.,356560171
+134,Select the most accurate option: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,select the most accurate option: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,3170708881
+135,Determine the correct option: What is the reason for recycling rare metals according to the United Nations? from the following choices.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will minimize in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:
+
+Multiple methods have been proposed for the recycling of CRT glass. The methods involve thermal, mechanical and chemical processes. All proposed methods remove the lead oxide content from the glass. Some companies operated furnaces to separate the lead from the glass. A coalition called the Recytube project was once formed by several European companies to devise a method to recycle CRTs. The phosphors used in CRTs often contain rare earth metals. A CRT contains about 7 grams of phosphor.",0.5833333333333334,local,determine the correct option: what is the reason for recycling rare metals according to the united nations? from the following choices.,3337196836
+136,Pick the best possible answer: What is the role of CYCLOIDEA genes in the evolution of bilateral symmetry? among the listed options.,CYCLOIDEA genes are responsible for the selection of symmetry in the evolution of animals.,"CYCLOIDEA genes are responsible for the evolution of specialized pollinators in plants, which in turn led to the transition of radially symmetrical flowers to bilaterally symmetrical flowers.","CYCLOIDEA genes are responsible for the expression of dorsal petals in Antirrhinum majus, which control their size and shape.","CYCLOIDEA genes are responsible for the expression of transcription factors that control the expression of other genes, allowing their expression to influence developmental pathways relating to symmetry.",CYCLOIDEA genes are responsible for mutations that cause a reversion to radial symmetry.,D,"In many of his writings, Mayr rejected reductionism in evolutionary biology, arguing that evolutionary pressures act on the whole organism, not on single genes, and that genes can have different effects depending on the other genes present. He advocated a study of the whole genome, rather than of only isolated genes. After articulating the biological species concept in 1942, Mayr played a central role in the species problem debate over what was the best species concept. He staunchly defended the biological species concept against the many definitions of ""species"" that others proposed.
+
+An area of current investigation in evolutionary developmental biology is the developmental basis of adaptations and exaptations. This research addresses the origin and evolution of embryonic development and how modifications of development and developmental processes produce novel features.  These studies have shown that evolution can alter development to produce new structures, such as embryonic bone structures that develop into the jaw in other animals instead forming part of the middle ear in mammals. It is also possible for structures that have been lost in evolution to reappear due to changes in developmental genes, such as a mutation in chickens causing embryos to grow teeth similar to those of crocodiles. It is now becoming clear that most alterations in the form of organisms are due to changes in a small set of conserved genes.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.5384615384615384,local,pick the best possible answer: what is the role of cycloidea genes in the evolution of bilateral symmetry? among the listed options.,1625429152
+137,What is the effect generated by a spinning superconductor?,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"See also
+ Magnesium diboride, considered a BCS superconductor
+ Quasiparticle
+ Little–Parks effect, one of the first indications of the importance of the Cooper pairing principle.
+
+Near a rotating black hole, spacetime rotates similar to a vortex. The rotating spacetime will drag any matter and light into rotation around the spinning black hole. This effect of general relativity, called frame dragging, gets stronger closer to the spinning mass. The region of spacetime in which it is impossible to stay still is called the ergosphere.
+
+Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.",0.75,local,what is the effect generated by a spinning superconductor?,472354504
+138,Select the most accurate option: What is the relevant type of coherence for the Young's double-slit interferometer? from the following choices.,Visibility,Coherence time,Spatial coherence,Coherence length,Diameter of the coherence area (Ac),E,"If waves are emitted from an extended source, this can lead to incoherence in the transversal direction. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherence length. In the case of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting pattern on a screen would look like two single-slit diffraction patterns.",0.35714285714285715,local,select the most accurate option: what is the relevant type of coherence for the young's double-slit interferometer? from the following choices.,2554261219
+139,"Pick the best possible answer: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? carefully.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).",0.4117647058823529,local,"pick the best possible answer: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? carefully.",592547447
+140,What is Martin Heidegger's view on the relationship between time and human existence?,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Martin Heidegger is the best known of Husserl's students, the one whom Husserl chose as his successor at Freiburg. Heidegger's magnum opus Being and Time was dedicated to Husserl. They shared their thoughts and worked alongside each other for over a decade at the University of Freiburg, Heidegger being Husserl's assistant during 1920–1923.Kockelmans, ""Introduction [Martin Heidegger]"" 267–276, 273, in Kockelmans, editor, Phenomenology (1967). Heidegger's early work followed his teacher, but with time he began to develop new insights distinctively variant. Husserl became increasingly critical of Heidegger's work, especially in 1929, and included pointed criticism of Heidegger in lectures he gave during 1931.See above subsection ""Heidegger and the Nazi era"". Heidegger, while acknowledging his debt to Husserl, followed a political position offensive and harmful to Husserl after the Nazis came to power in 1933, Husserl being of Jewish origin and Heidegger infamously being then a Nazi proponent.The multivalent, including the ""horrifying"", aspects of Heidegger in a parallel context are recounted in Peter Eli Gordon, Rosensweig and Heidegger: Between Judaism and German Philosophy (University of California 2003) at 13–14 (Heidegger and Rosensweig's early ""kinship"" with him). ""In 1929, however, one could still read Heidegger's philosophy without being drawn into a controversy concerning its relationship to National Socialism, antisemitism, and the like. The German philosophical world as a whole still cloaked itself in a mantle of relative innocence."" Gordon (2003) at 303–304. ""Rosensweig's work represents the culmination of what is often called the German Jewish Tradition."" Gordon, ""Preface"" (2003) at xix. Academic discussion of Husserl and Heidegger is extensive.
+
+Ayer was a strong critic of the German philosopher Martin Heidegger. As a logical positivist, Ayer was in conflict with Heidegger's vast, overarching theories of existence. Ayer considered them completely unverifiable through empirical demonstration and logical analysis, and this sort of philosophy an unfortunate strain in modern thought. He considered Heidegger the worst example of such philosophy, which Ayer believed entirely useless. In Philosophy in the Twentieth Century, Ayer accuses Heidegger of ""surprising ignorance"" or ""unscrupulous distortion"" and ""what can fairly be described as charlatanism"".
+
+Heidegger read Sartre's work and was initially impressed, commenting: ""Here for the first time I encountered an independent thinker who, from the foundations up, has experienced the area out of which I think. Your work shows such an immediate comprehension of my philosophy as I have never before encountered.""Martin Heidegger, letter, quoted in Rüdiger Safranski, Martin Heidegger – Between Good and Evil (Harvard University Press, 1998, p. 349). Later, however, in response to a question posed by his French follower Jean Beaufret,Rüdiger Safranski, Martin Heidegger – Between Good and Evil (Harvard University Press, 1998, p. 356). Heidegger distanced himself from Sartre's position and existentialism in general in his Letter on Humanism.William J. Richardson, Martin Heidegger: From Phenomenology to Thought (Martjinus Nijhoff, 1967, p. 351). Heidegger's reputation continued to grow in France during the 1950s and 1960s. In the 1960s, Sartre attempted to reconcile existentialism and Marxism in his work Critique of Dialectical Reason. A major theme throughout his writings was freedom and responsibility.",0.7777777777777778,local,what is martin heidegger's view on the relationship between time and human existence?,1694363165
+141,Determine the correct option: What is accelerator-based light-ion fusion? from the following choices.,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This procedure is relatively difficult to implement and requires a complex structure of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This approach is relatively difficult to implement and requires a complex framework of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,determine the correct option: what is accelerator-based light-ion fusion? from the following choices.,1333885792
+142,Determine the correct option: Which of the following statements accurately describes the origin and significance of the triskeles symbol? based on the given context.,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,"Ammianus' work contains a detailed description of the earthquake and tsunami of 365 in Alexandria, which devastated the metropolis and the shores of the eastern Mediterranean on 21 July 365. His report describes accurately the characteristic sequence of earthquake, retreat of the sea, and sudden incoming giant wave.
+
+In the context of debates around and proposals for the legalisation of euthanasia and assisted suicide, the 1998 Conference affirmed that ""life is God-given and has intrinsic sanctity, significance and worth"".
+
+In the context of debates around and proposals for the legalisation of euthanasia and assisted suicide, the 1998 conference affirmed that ""life is God-given and has intrinsic sanctity, significance and worth"".",0.4,local,determine the correct option: which of the following statements accurately describes the origin and significance of the triskeles symbol? based on the given context.,4162327913
+143,Which of the following is correct? What is the De Haas-Van Alphen effect? carefully.,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.
+
+In 1908, Owen Willans Richardson predicted that a change in the magnetic moment of a free body will cause this body to rotate. This effect is a consequence of the conservation of angular momentum and is strong enough to be observable in ferromagnetic materials. Einstein and Wander Johannes de Haas published two papers in 1915 claiming the first experimental observation of the effect. Measurements of this kind demonstrate that the phenomenon of magnetization is caused by the alignment (polarization) of the angular momenta of the electrons in the material along the axis of magnetization. These measurements also allow the separation of the two contributions to the magnetization: that which is associated with the spin and with the orbital motion of the electrons. The Einstein-de Haas experiment is the only experiment conceived, realized and published by Albert Einstein himself.
+
+Einstein resigned from the Prussian Academy in March 1933. His accomplishments in Berlin had included the completion of the general theory of relativity, proving the Einstein–de Haas effect, contributing to the quantum theory of radiation, and the development of Bose–Einstein statistics.",0.6666666666666666,local,which of the following is correct? what is the de haas-van alphen effect? carefully.,655809701
+144,Pick the best possible answer: What is the Evans balance?,"The Evans balance is a framework used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a mechanism used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a framework used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a structure used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a framework used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"This branch of mathematics deals with the long-term qualitative behavior of dynamical systems. Here, the focus is not on finding precise solutions to the equations defining the dynamical system (which is often hopeless), but rather to answer questions like ""Will the system settle down to a steady state in the long term, and if so, what are the possible attractors?"" or ""Does the long-term behavior of the system depend on its initial condition?""
+
+The first BBSes
+Early modems were generally either expensive or very simple devices using acoustic couplers to handle telephone operation. The user would pick up the phone, dial a number, then press the handset into rubber cups on the top of the modem. Disconnecting at the end of a call required the user to pick up the handset and return it to the phone. Examples of direct-connecting modems did exist, and these often allowed the host computer to send it commands to answer or hang up calls, but these were very expensive devices used by large banks and similar companies.
+
+Similarly to the crew of Apollo 16, Evans (as well as Schmitt, while in lunar orbit) reported seeing light ""flashes"" apparently originating from the lunar surface, known as transient lunar phenomena (TLP); Evans reported seeing these ""flashes"" in the vicinity of Grimaldi crater and Mare Orientale. The causes of TLP are not well-understood and, though inconclusive as an explanation, both of the sites in which Evans reported seeing TLP are the general locations of outgassing from the Moon's interior. Meteorite impacts are another possible explanation.",0.6666666666666666,local,pick the best possible answer: what is the evans balance?,1518867771
+145,What are the constituents of cold dark matter?,"They are unknown, but possibilities include large objects like MACHOs or new particles such as WIMPs and axions.",They are known to be black holes and Preon stars.,They are only MACHOs.,They are clusters of brown dwarfs.,They are new particles such as RAMBOs.,A,"The identity of dark matter is unknown, but there are many hypotheses about what dark matter could consist of, as set out in the table below.
++ Major dark matter hypotheses Light bosons Axions Axion-like particles Fuzzy cold dark matter Neutrinos Standard Model Sterile neutrinos Other particles Lightest supersymmetric particle Weakly interacting massive particles (WIMPs) Self-interacting dark matter Atomic dark matter Strangelet Macroscopic Primordial black holes (PBHs) (See also the accompanying slide presentation. Other massive compact halo objects (MACHOs)
+
+In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form of energy known as dark energy. Thus, dark matter constitutes 85% of the total mass, while dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy, its local density in the Solar System is much less than normal matter. The total of all the dark matter out to the orbit of Neptune would add up about 1017 kg, the same as a large asteroid. Dark matter is classified as ""cold"", ""warm"", or ""hot"" according to velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.
+
+After the recombination epoch, the slightly denser regions of the uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today. The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter. The best measurements available, from the Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold. This CDM is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about 4.6%. (See Table 8.)",0.75,local,what are the constituents of cold dark matter?,1958787817
+146,Select the most accurate option: What is spatial dispersion? among the listed options.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in structures, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in frameworks, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in structures, commonly seen in optics and electronics.",D,"Randomization is a statistical process in which a random mechanism is employed to select a sample from a population or assign subjects to different groups. The process is crucial in ensuring the random allocation of experimental units or treatment protocols, thereby minimizing selection bias and enhancing the statistical validity. It facilitates the objective comparison of treatment effects in experimental design, as it equates groups statistically by balancing both known and unknown factors at the outset of the study. In statistical terms, it underpins the principle of probabilistic equivalence among groups, allowing for the unbiased estimation of treatment effects and the generalizability of conclusions drawn from sample data to the broader population.
+Randomization is not haphazard; instead, a random process is a sequence of random variables describing a process whose outcomes do not follow a deterministic pattern but follow an evolution described by probability distributions. For e",0.2222222222222222,live_api,select the most accurate option: what is spatial dispersion? among the listed options.,54601791
+147,Choose the correct answer: What is a planetary structure? based on the given context.,A framework of planets that are all located in the same solar framework.,A framework of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star structure.,A mechanism of planets that are all located in the same galaxy.,A structure of planets that are all made of gas.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.875,local,choose the correct answer: what is a planetary structure? based on the given context.,1494689547
+148,What is a magnetic monopole in particle physics?,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.
+
+External magnetic fields
+In experimental condensed matter physics, external magnetic fields act as thermodynamic variables that control the state, phase transitions and properties of material systems.  Nuclear magnetic resonance (NMR) is a method by which external magnetic fields are used to find resonance modes of individual nuclei, thus giving information about the atomic, molecular, and bond structure of their environment. NMR experiments can be made in magnetic fields with strengths up to 60 tesla.  Higher magnetic fields can improve the quality of NMR measurement data. Quantum oscillations is another experimental method where high magnetic fields are used to study material properties such as the geometry of the Fermi surface.  High magnetic fields will be useful in experimental testing of the various theoretical predictions such as the quantized magnetoelectric effect, image magnetic monopole, and the half-integer quantum Hall effect.
+
+Stable magnetic monopoles are a problem for Grand Unified Theories, which propose that at high temperatures (such as in the early universe), the electromagnetic force, strong, and weak nuclear forces are not actually fundamental forces but arise due to spontaneous symmetry breaking from a single gauge theory. These theories predict a number of heavy, stable particles that have not been observed in nature. The most notorious is the magnetic monopole, a kind of stable, heavy ""charge"" of magnetic field.",1.0,local,what is a magnetic monopole in particle physics?,1248422735
+149,Determine the correct option: What is the spin quantum number? carefully.,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+There is another quantity of angular momentum, called the orbital angular momentum (azimuthal quantum number ), that comes in increments of , which represent the angular moment due to quarks orbiting around each other. The total angular momentum (total angular momentum quantum number J) of a particle is therefore the combination of intrinsic angular momentum (spin) and orbital angular momentum. It can take any value from  to , in increments of 1.
++ Baryon angular momentum quantum numbers for  Spin, S Orbital angular momentum, L Total angular momentum, J Parity, P Condensed notation, JP  0    +  + 1  ,   −  −, − 2  ,   +  +, + 3  ,   −  −, −  0    +  + 1  , ,   −  −, −, − 2  , , ,   +  +, +, +, + 3  , , ,   −  −, −, −, −",0.42857142857142855,local,determine the correct option: what is the spin quantum number? carefully.,3327059844
+150,Which of the following is correct? What did Newton's manuscripts of the 1660s show? among the listed options.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,"15th century
+John Lydgate and Thomas Occleve were among the first critics of Chaucer's Tales, praising the poet as the greatest English poet of all time and the first to show what the language was truly capable of poetically. This sentiment was universally agreed upon by later critics into the mid-15th century. Glosses included in The Canterbury Tales manuscripts of the time praised him highly for his skill with ""sentence"" and rhetoric, the two pillars by which medieval critics judged poetry. The most respected of the tales was at this time the Knight's, as it was full of both.Pearsall, 298–302.
+
+Bibliography
+ Apple's press release on the debut of the MessagePad 2100: 
+ Apple's overview of features & limitations of Newton Connection Utilities: 
+ Newton overview at Newton Source archived from Apple: 
+ Newton FAQ: 
+ Newton Gallery: 
+ Birth of the Newton: 
+ The Newton Hall of Fame: People behind the Newton: 
+ Pen Computing's Why did Apple kill the Newton?: 
+ Pen Computing's Newton Notes column archive: 
+ A.I. Magazine article by Yaeger on Newton HWR design, algorithms, & quality: 
+ Associated slides: 
+ Info on Newton HWR from Apple's HWR Technical Lead: 
+ Notes on the History of Pen-based Computing: 
+ This links to:
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.75,local,which of the following is correct? what did newton's manuscripts of the 1660s show? among the listed options.,4062700791
+151,"Select the most accurate option: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? based on the given context.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The concept of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals
+
+In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).",0.5333333333333333,local,"select the most accurate option: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? based on the given context.",3566377705
+152,Choose the correct answer: What is the function of mammary glands in mammals? from the following choices.,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.4444444444444444,local,choose the correct answer: what is the function of mammary glands in mammals? from the following choices.,2537609219
+153,Pick the best possible answer: What is the reason that Newton's second law cannot be used to calculate the development of a physical framework in quantum mechanics?,"The existence of particle spin, which is linear momentum that can be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that is always equal to zero.","The existence of particle spin, which is linear momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that can be described by the cumulative effect of point-like motions in space.",D,"While angular momentum total conservation can be understood separately from Newton's laws of motion as stemming from Noether's theorem in systems symmetric under rotations, it can also be understood simply as an efficient method of calculation of results that can also be otherwise arrived at directly from Newton's second law, together with laws governing the forces of nature (such as Newton's third law, Maxwell's equations and Lorentz force). Indeed, given initial conditions of position and velocity for every point, and the forces at such a condition, one may use Newton's second law to calculate the second derivative of position, and solving for this gives full information on the development of the physical system with time.Tenenbaum, M., & Pollard, H. (1985). Ordinary differential equations en elementary textbook for students of mathematics. Engineering and the Sciences. Note, however, that this is no longer true in quantum mechanics, due to the existence of particle spin, which is an angular momentum that cannot be described by the cumulative effect of point-like motions in space.
+
+Molecular dynamics (MD) use either quantum mechanics, molecular mechanics or a mixture of both to calculate forces which are then used to solve Newton's laws of motion to examine the time-dependent behavior of systems. The result of a molecular dynamics simulation is a trajectory that describes how the position and velocity of particles varies with time. The phase point of a system described by the positions and momenta of all its particles on a previous time point will determine the next phase point in time by integrating over Newton's laws of motion.",0.6842105263157895,local,pick the best possible answer: what is the reason that newton's second law cannot be used to calculate the development of a physical framework in quantum mechanics?,1670572334
+154,Pick the best possible answer: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? carefully.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,pick the best possible answer: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? carefully.,2129219658
+155,Pick the best possible answer: What is the reason that Newton's second law cannot be used to calculate the development of a physical structure in quantum mechanics? based on the given context.,"The existence of particle spin, which is linear momentum that can be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that is always equal to zero.","The existence of particle spin, which is linear momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that can be described by the cumulative effect of point-like motions in space.",D,"While angular momentum total conservation can be understood separately from Newton's laws of motion as stemming from Noether's theorem in systems symmetric under rotations, it can also be understood simply as an efficient method of calculation of results that can also be otherwise arrived at directly from Newton's second law, together with laws governing the forces of nature (such as Newton's third law, Maxwell's equations and Lorentz force). Indeed, given initial conditions of position and velocity for every point, and the forces at such a condition, one may use Newton's second law to calculate the second derivative of position, and solving for this gives full information on the development of the physical system with time.Tenenbaum, M., & Pollard, H. (1985). Ordinary differential equations en elementary textbook for students of mathematics. Engineering and the Sciences. Note, however, that this is no longer true in quantum mechanics, due to the existence of particle spin, which is an angular momentum that cannot be described by the cumulative effect of point-like motions in space.
+
+Molecular dynamics (MD) use either quantum mechanics, molecular mechanics or a mixture of both to calculate forces which are then used to solve Newton's laws of motion to examine the time-dependent behavior of systems. The result of a molecular dynamics simulation is a trajectory that describes how the position and velocity of particles varies with time. The phase point of a system described by the positions and momenta of all its particles on a previous time point will determine the next phase point in time by integrating over Newton's laws of motion.",0.6363636363636364,local,pick the best possible answer: what is the reason that newton's second law cannot be used to calculate the development of a physical structure in quantum mechanics? based on the given context.,4032962274
+156,"What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope?","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.
+
+On larger scales, large galaxy redshift surveys may be used to make a three-dimensional map of the galaxy distribution. These maps are slightly distorted because distances are estimated from observed redshifts; the redshift contains a contribution from the galaxy's so-called peculiar velocity in addition to the dominant Hubble expansion term. On average, superclusters are expanding more slowly than the cosmic mean due to their gravity, while voids are expanding faster than average. In a redshift map, galaxies in front of a supercluster have excess radial velocities towards it and have redshifts slightly higher than their distance would imply, while galaxies behind the supercluster have redshifts slightly low for their distance. This effect causes superclusters to appear squashed in the radial direction, and likewise voids are stretched. Their angular positions are unaffected. This effect is not detectable for any one structure since the true shape is not known, but can be measured by averaging over many structures. It was predicted quantitatively by Nick Kaiser in 1987, and first decisively measured in 2001 by the 2dF Galaxy Redshift Survey. Results are in agreement with the Lambda-CDM model.
+
+When Ernst Öpik estimated the density of visual binary stars in 1916, he found that 40 Eridani B had a density of over  times that of the Sun, which was so high that he called it ""impossible"".
+As Eddington pointed out in 1924, densities of this order implied that, according to the theory of general relativity, the light from Sirius B should be gravitationally redshifted.
+A number of experimenters initially claimed to have identified the effect using astronomical measurements, and the effect was considered to have been finally identified in the spectral lines of the star Sirius B by W.S. Adams in 1925.Hetherington, N. S., ""Sirius B and the gravitational redshift - an historical review"", Quarterly Journal Royal Astronomical Society, vol. 21, Sept. 1980, pp. 246–252. Accessed 6 April 2017. However, measurements by Adams have been criticized as being too lowHolberg, J. B., ""Sirius B and the Measurement of the Gravitational Redshift"", Journal for the History of Astronomy, vol. 41, 1, 2010, pp. 41–64. Accessed 6 April 2017. and these observations are now considered to be measurements of spectra that are unusable because of scattered light from the primary, Sirius A. The first accurate measurement of the gravitational redshift of a white dwarf was done by Popper in 1954, measuring a 21 km/s gravitational redshift of 40 Eridani B. The redshift of Sirius B was finally measured by Greenstein et al. in 1971, obtaining the value for the gravitational redshift of 89±16 km/s, with more accurate measurements by the Hubble Space Telescope, showing 80.4±4.8 km/s.Effective Temperature, Radius, and Gravitational Redshift of Sirius B, J. L. Greenstein, J.B. Oke, H. L. Shipman, Astrophysical Journal 169 (Nov. 1, 1971), pp. 563–566.",0.75,local,"what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope?",3698126801
+157,Select the most accurate option: What is the Roche limit? carefully.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"Albert Arnold Gore Jr. (born March 31, 1948) is an American politician, businessman, and environmentalist who served as the 45th vice president of the United States from 1993 to 2001 under President Bill Clinton. A member of the Democratic Party, he previously represented Tennessee in both houses of the U.S. Congress, first as a member of the U.S. House of Representatives from 1977 to 1985, and then as a U.S. senator from 1985 to 1993. Gore was the Democratic nominee in the 2000 presidential election, losing to Republican nominee George W. Bush.
+The son of politician Albert Gore Sr., Gore was raised in Tennessee and Washington, D.C., where he was born. After graduating from Harvard University and serving in the U.S. Army, he quit law school to run as a representative for Tennessee's 4th congressional district in 1976. Gore was re-elected three times before running for U.S. Senate in 1984, winning re-election in 1990. He was considered a moderate and an ""Atari Democrat"". Gore served as",0.0,live_api,select the most accurate option: what is the roche limit? carefully.,1288352802
+158,Select the most accurate option: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? carefully.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,select the most accurate option: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? carefully.,1288009222
+159,What is the cause of the observed change in the periods of moons orbiting a distant planet when measured from Earth?,"The difference in the size of the planet's moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the difference in distance being the diameter of the Earth's orbit around the Sun.","The difference in the speed of light when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the difference in distance being the diameter of the Earth's orbit around the Sun.","The difference in distance travelled by light from the planet (or its moon) to Earth when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the difference in distance being the diameter of the Earth's orbit around the Sun.","The difference in the atmospheric conditions of the planet when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the difference in distance being the diameter of the Earth's orbit around the Sun.","The difference in the gravitational pull of the planet on its moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the difference in distance being the diameter of the Earth's orbit around the Sun.",C,"The Moon is a relatively large, terrestrial, planet-like natural satellite, with a diameter about one-quarter of Earth's. It is the largest moon in the Solar System relative to the size of its planet, although Charon is larger relative to the dwarf planet Pluto. The natural satellites of other planets are also referred to as ""moons"", after Earth's. The Moon and Earth orbit a common barycenter every 27.32 days relative to the background stars. When combined with the Earth–Moon system's common orbit around the Sun, the period of the synodic month, from new moon to new moon, is 29.53 days.
+
+Galileo used  for  (Latin: I have observed the most distant planet to have a triple form) for discovering the rings of Saturn in 1610. Galileo announced his discovery that Venus had phases like the Moon in the form  (Latin: These immature ones have already been read in vain by me -oy), that is, when rearranged,  (Latin: The Mother of Loves [= Venus] imitates the figures of Cynthia [= the moon]). In both cases, Johannes Kepler had solved the anagrams incorrectly, assuming they were talking about the Moons of Mars () and a red spot on Jupiter (), respectively. By coincidence, he turned out to be right about the actual objects existing.
+
+Indirect methods 
+ Transit method
+ Radial velocity or Doppler method
+ As a planet orbits a star, the star also moves in its own small orbit around the system's center of mass. Variations in the star's radial velocity—that is, the speed with which it moves towards or away from Earth—can be detected from displacements in the star's spectral lines due to the Doppler effect. Extremely small radial-velocity variations can be observed, of 1 m/s or even somewhat less.
+ Transit timing variation (TTV)
+When multiple planets are present, each one slightly perturbs the others' orbits. Small variations in the times of transit for one planet can thus indicate the presence of another planet, which itself may or may not transit. For example, variations in the transits of the planet Kepler-19b suggest the existence of a second planet in the system, the non-transiting Kepler-19c.Planet Hunting: Finding Earth-like Planets . Scientific Computing. 19 July 2010
+ Transit duration variation (TDV)
+ Gravitational microlensing
+Microlensing occurs when the gravitational field of a star acts like a lens, magnifying the light of a distant background star. Planets orbiting the lensing star can cause detectable anomalies in magnification as it varies over time. Unlike most other methods which have a detection bias towards planets with small (or for resolved imaging, large) orbits, the microlensing method is most sensitive to detecting planets around 1–10 AU away from Sun-like stars.
+ Astrometry
+alt=|thumb|A planet is able to gravitationally pull its host star Astrometry consists of precisely measuring a star's position in the sky and observing the changes in that position over time. The motion of a star due to the gravitational influence of a planet may be observable. Because the motion is so small, however, this method was not very productive until the 2020s. It has produced only a few confirmed discoveries, though it has been successfully used to investigate the properties of planets found in other ways.
+ Pulsar timing
+A pulsar, a small, dense remnant of a star that has exploded as a supernova, emits radio waves regularly as it rotates. If planets orbit the pulsar, the motion of the pulsar around the system's center of mass alters the pulsar's distance to Earth over time. As a result, the radio pulses from the pulsar arrive on Earth at a later or earlier time. This light travel delay due to the pulsar being physically closer or farther from Earth is known as a Roemer time delay. The first confirmed discovery of an extrasolar planet was made using this method. But as of 2011, it has not been very productive; five planets have been detected in this way, around three different pulsars.
+ Variable star timing (pulsation frequency)
+Like pulsars, there are some other types of stars which exhibit periodic activity. Deviations from periodicity can sometimes be caused by a planet orbiting it. As of 2013, a few planets have been discovered with this method.
+ Reflection/emission modulations
+When a planet orbits very close to a star, it catches a considerable amount of starlight. As the planet orbits the star, the amount of light changes due to planets having phases from Earth's viewpoint or planets glowing more from one side than the other due to temperature differences.
+ Relativistic beaming
+Relativistic beaming measures the observed flux from the star due to its motion. The brightness of the star changes as the planet moves closer or further away from its host star.
+ Ellipsoidal variations
+Massive planets close to their host stars can slightly deform the shape of the star. This causes the brightness of the star to slightly deviate depending on how it is rotated relative to Earth.
+ Polarimetry
+With the polarimetry method, a polarized light reflected off the planet is separated from unpolarized light emitted from the star. No new planets have been discovered with this method, although a few already discovered planets have been detected with this method.
+ Circumstellar disks
+Disks of space dust surround many stars, thought to originate from collisions among asteroids and comets. The dust can be detected because it absorbs starlight and re-emits it as infrared radiation. Features on the disks may suggest the presence of planets, though this is not considered a definitive detection method.",0.7272727272727273,local,what is the cause of the observed change in the periods of moons orbiting a distant planet when measured from earth?,2568768655
+160,What is the difference between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza?,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,"At least two views of design activity are consistent with the action-centric perspective. Both involve these three basic activities:
+ In the reflection-in-action paradigm, designers alternate between ""framing"", ""making moves"", and ""evaluating moves"". ""Framing"" refers to conceptualizing the problem, i.e., defining goals and objectives. A ""move"" is a tentative design decision. The evaluation process may lead to further moves in the design.
+ In the sensemaking–coevolution–implementation framework, designers alternate between its three titular activities. Sensemaking includes both framing and evaluating moves. Implementation is the process of constructing the design object. Coevolution is ""the process where the design agent simultaneously refines its mental picture of the design object based on its mental picture of the context, and vice versa"".
+
+Another contrast is made between existence and essence. Essence refers to the intrinsic nature or defining qualities of an entity. The essence of something determines what kind of entity it is and how it differs from other kinds of entities. Essence corresponds to what an entity is, while existence corresponds to the fact that it is. For instance, it is possible to understand what an object is and grasp its nature even if one does not know whether this object exists. According to some philosophers, there is a difference between entities and the fundamental characteristics that make them the entities they are. Martin Heidegger (1889–1976) introduced this concept; he calls it the ontological difference and contrasts individual beings with being. According to his response to the question of being, being is not an entity but the background context that makes all individual entities intelligible.
+
+Interactions between organisms can produce both conflict and cooperation. When the interaction is between pairs of species, such as a pathogen and a host, or a predator and its prey, these species can develop matched sets of adaptations. Here, the evolution of one species causes adaptations in a second species. These changes in the second species then, in turn, cause new adaptations in the first species. This cycle of selection and response is called coevolution. An example is the production of tetrodotoxin in the rough-skinned newt and the evolution of tetrodotoxin resistance in its predator, the common garter snake. In this predator-prey pair, an evolutionary arms race has produced high levels of toxin in the newt and correspondingly high levels of toxin resistance in the snake.",0.42857142857142855,local,what is the difference between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza?,2006428901
+161,Determine the correct option: What is the spin quantum number? based on the given context.,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+Some real orbitals are given specific names beyond the simple  designation. Orbitals with quantum number  are called  orbitals. With this one can already assign names to complex orbitals such as ; the first symbol is the  quantum number, the second character is the symbol for that particular  quantum number and the subscript is the  quantum number.",0.4444444444444444,local,determine the correct option: what is the spin quantum number? based on the given context.,414752850
+162,Determine the correct option: What is the butterfly effect? carefully.,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the distinction between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.
+
+Differentiating types of butterfly effects 
+The concept of the butterfly effect encompasses several phenomena. The two kinds of butterfly effects, including the sensitive dependence on initial conditions, and the ability of a tiny perturbation to create an organized circulation at large distances, are not exactly the same. In Palmer et al., a new type of butterfly effect is introduced, highlighting the potential impact of small-scale processes on finite predictability within the Lorenz 1969 model. Additionally, the identification of ill-conditioned aspects of the Lorenz 1969 model points to a practical form of finite predictability. These two distinct mechanisms suggesting finite predictability in the Lorenz 1969 model are collectively referred to as the third kind of butterfly effect. The authors in  have considered Palmer et al.'s suggestions and have aimed to present their perspective without raising specific contentions.",0.3333333333333333,local,determine the correct option: what is the butterfly effect? carefully.,3663869846
+163,Choose the correct answer: What is a planetary mechanism? based on the given context.,A mechanism of planets that are all located in the same solar mechanism.,A framework of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star mechanism.,A structure of planets that are all located in the same galaxy.,A structure of planets that are all made of gas.,C,"In one incarnation, the machine was a box that housed a list of questions that could be viewed one at a time through a small window. (see picture.) There was also a mechanism through which the learner could respond to each question. Upon delivering a correct answer, the learner would be rewarded.
+
+Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.875,local,choose the correct answer: what is a planetary mechanism? based on the given context.,981357933
+164,Pick the best possible answer: What are the four qualitative levels of crystallinity described by geologists? among the listed options.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,No match found.,0.0,live_api,pick the best possible answer: what are the four qualitative levels of crystallinity described by geologists? among the listed options.,1348330859
+165,Select the most accurate option: What is the contrast between probability mass function (PMF) and probability density function (PDF)? from the following choices.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability concept.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .
+
+If treating several random variables  etc. the corresponding letters are used as subscripts while, if treating only one, the subscript is usually omitted. It is conventional to use a capital  for a cumulative distribution function, in contrast to the lower-case  used for probability density functions and probability mass functions. This applies when discussing general distributions: some specific distributions have their own conventional notation, for example the normal distribution uses  and  instead of  and , respectively.",0.5,local,select the most accurate option: what is the contrast between probability mass function (pmf) and probability density function (pdf)? from the following choices.,375016323
+166,Pick the best possible answer: What is the definition of Atomristor? carefully.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"Reprinted in The Undecidable, p. 223ff. Herein is Rosser's famous definition of ""effective method"": ""...a method each step of which is precisely predetermined and which is certain to produce the answer in a finite number of steps... a machine which will then solve any problem of the set with no human intervention beyond inserting the question and (later) reading the answer"" (p. 225–226, The Undecidable)
+
+is a diffeomorphism if, in coordinate charts, it satisfies the definition above. More precisely: Pick any cover of  by compatible coordinate charts and do the same for . Let  and  be charts on, respectively,  and , with  and  as, respectively, the images of  and . The map  is then a diffeomorphism as in the definition above, whenever .
+
+Definition
+A decision problem is the formal language of all inputs for which the output (the answer to the yes-no question on a given input) is YES.",0.42857142857142855,local,pick the best possible answer: what is the definition of atomristor? carefully.,2911798615
+167,Identify the correct statement: What is the function of mammary glands in mammals? carefully.,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.5,local,identify the correct statement: what is the function of mammary glands in mammals? carefully.,49981231
+168,What is the Optical Signal-to-Noise Ratio (OSNR)?,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in systems where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in systems where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+An analog signal is subject to electronic noise and distortion introduced by communication channels, recording and signal processing operations, which can progressively degrade the signal-to-noise ratio (SNR). As the signal is transmitted, copied, or processed, the unavoidable noise introduced in the signal path will accumulate as a generation loss, progressively and irreversibly degrading the SNR, until in extreme cases, the signal can be overwhelmed. Noise can show up as hiss and intermodulation distortion in audio signals, or snow in video signals. Generation loss is irreversible as there is no reliable method to distinguish the noise from the signal. Note that, despite a popular misconception, analog representations do not provide ""infinite"" resolution or accuracy, due to this inevitable presence of noise (and therefore error) in any real-world system.",0.8,local,what is the optical signal-to-noise ratio (osnr)?,4101361576
+169,"What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""?","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical system can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The Theory of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical system has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical system can cause significant differences in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical system has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical system can cause significant differences in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.875,local,"what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""?",3249580240
+170,Select the most accurate option: What is radiosity in radiometry? carefully.,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,No match found.,0.0,live_api,select the most accurate option: what is radiosity in radiometry? carefully.,3568076342
+171,What was Pierre de Fermat's solution to the problem of refraction?,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Pierre de Fermat also pioneered the development of analytic geometry. Although not published in his lifetime, a manuscript form of Ad locos planos et solidos isagoge (Introduction to Plane and Solid Loci) was circulating in Paris in 1637, just prior to the publication of Descartes' Discourse.Pierre de Fermat, Varia Opera Mathematica d. Petri de Fermat, Senatoris Tolosani (Toulouse, France:  Jean Pech, 1679), ""Ad locos planos et solidos isagoge,"" pp. 91–103. ""Eloge de Monsieur de Fermat""  (Eulogy of Mr. de Fermat), Le Journal des Scavans, 9 February 1665, pp. 69–72.  From p. 70:  ""Une introduction aux lieux, plans & solides; qui est un traité analytique concernant la solution des problemes plans & solides, qui avoit esté veu devant que M. des Cartes eut rien publié sur ce sujet.""  (An introduction to loci, plane and solid; which is an analytical treatise concerning the solution of plane and solid problems, which was seen before Mr. des Cartes had published anything on this subject.) Clearly written and well received, the Introduction also laid the groundwork for analytical geometry. The key difference between Fermat's and Descartes' treatments is a matter of viewpoint: Fermat always started with an algebraic equation and then described the geometric curve that satisfied it, whereas Descartes started with geometric curves and produced their equations as one of several properties of the curves. As a consequence of this approach, Descartes had to deal with more complicated equations and he had to develop the methods to work with polynomial equations of higher degree. It was Leonhard Euler who first applied the coordinate method in a systematic study of space curves and surfaces.",0.875,local,what was pierre de fermat's solution to the problem of refraction?,400197575
+172,Identify the correct statement: What is an order parameter?,An order parameter is a measure of the temperature of a physical framework.,An order parameter is a measure of the gravitational force in a physical mechanism.,An order parameter is a measure of the magnetic field strength in a physical structure.,An order parameter is a measure of the degree of symmetry breaking in a physical framework.,An order parameter is a measure of the rotational symmetry in a physical framework.,D,"Where  is the first order virial parameter and it depends on the temperature,  is the second order virial parameter of Morse oscillator and it depends on the  parameters of Morse oscillator in addition to the absolute temperature.  is the fractional volume of the system.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",1.0,local,identify the correct statement: what is an order parameter?,85012613
+173,Identify the correct statement: What is the role of CYCLOIDEA genes in the evolution of bilateral symmetry? based on the given context.,CYCLOIDEA genes are responsible for the selection of symmetry in the evolution of animals.,"CYCLOIDEA genes are responsible for the evolution of specialized pollinators in plants, which in turn led to the transition of radially symmetrical flowers to bilaterally symmetrical flowers.","CYCLOIDEA genes are responsible for the expression of dorsal petals in Antirrhinum majus, which control their size and shape.","CYCLOIDEA genes are responsible for the expression of transcription factors that control the expression of other genes, allowing their expression to influence developmental pathways relating to symmetry.",CYCLOIDEA genes are responsible for mutations that cause a reversion to radial symmetry.,D,"Understanding the changes that have occurred during an organism's evolution can reveal the genes needed to construct parts of the body, genes which may be involved in human genetic disorders. For example, the Mexican tetra is an albino cavefish that lost its eyesight during evolution. Breeding together different populations of this blind fish produced some offspring with functional eyes, since different mutations had occurred in the isolated populations that had evolved in different caves. This helped identify genes required for vision and pigmentation.
+
+The issue of evolution has been a point of controversy for some members of the church. The first official statement on the issue of evolution was in 1909, which marked the centennial of Charles Darwin's birth and the 50th anniversary of his masterwork, On the Origin of Species. In that year, the First Presidency, led by Joseph F. Smith as president, issued a statement reinforcing the predominant religious view of creationism, and calling human evolution one of the ""theories of men"", but falling short of declaring evolution untrue or evil.
+
+In many of his writings, Mayr rejected reductionism in evolutionary biology, arguing that evolutionary pressures act on the whole organism, not on single genes, and that genes can have different effects depending on the other genes present. He advocated a study of the whole genome, rather than of only isolated genes. After articulating the biological species concept in 1942, Mayr played a central role in the species problem debate over what was the best species concept. He staunchly defended the biological species concept against the many definitions of ""species"" that others proposed.",0.4166666666666667,local,identify the correct statement: what is the role of cycloidea genes in the evolution of bilateral symmetry? based on the given context.,3421850057
+174,Identify the correct statement: What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? among the listed options.,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.375,local,identify the correct statement: what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? among the listed options.,2961992213
+175,"What is the throttling process, and why is it important?","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure increase in domestic refrigerators. This process is important because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is important because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure drop in domestic refrigerators. This process is important because it is at the heart of the refrigeration cycle.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature increase in domestic refrigerators. This process is important because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is not important because it is not used in the refrigeration cycle.",B,"One of the simple applications of the concept of enthalpy is the so-called throttling process, also known as Joule–Thomson expansion. It concerns a steady adiabatic flow of a fluid through a flow resistance (valve, porous plug, or any other type of flow resistance) as shown in the figure. This process is very important, since it is at the heart of domestic refrigerators, where it is responsible for the temperature drop between ambient temperature and the interior of the refrigerator. It is also the final stage in many types of liquefiers.
+
+The Catholic Church considers that in the Council of Rome in 382 AD, under the Papacy of Damasus I, was defined the complete canon of the Bible, accepting 46 books for the Old Testament, including what the Reformed Churches consider as deuterocanonical books, and 27 books for the New Testament.The Vulgate, website: 5 Minutes in Church History, viewed on 19 June 2021, https://www.5minutesinchurchhistory.com/the-vulgate/ Based in this first canon, Saint Jerome compiled and translated the 73 books of the Bible into Latin, later known as the Vulgate Bible version, which has been considered during many centuries as one of the official Bible translations of the Catholic Church.What is the Vulgate and why is it important?, Philip Kosloski - published on 30 September 2019, Aleteia, viewed on 20 June 2021, https://aleteia.org/2019/09/30/what-is-the-vulgate-and-why-is-it-important/
+
+Reynolds said that the most important principle of game design is for the designer to play the game as it is developed; Reynolds claimed that this was how a good artificial intelligence (AI) was built. To this end, he would track the decisions he made and why he made them as he played the game. The designer also watched what the computer players did, noting ""dumb"" actions and trying to discover why the computer made them.Reynolds (April 14, 1998), p2. Reynolds then taught the computer his reasoning process so the AI could find the right choice when presented several attractive possibilities. He said the AI for diplomatic personalities was the best he had done up to that point.",1.0,local,"what is the throttling process, and why is it important?",4020554092
+176,Identify the correct statement: What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI? carefully.,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,No match found.,0.0,live_api,identify the correct statement: what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri? carefully.,2505017346
+177,Pick the best possible answer: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? based on the given context.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.5,local,pick the best possible answer: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? based on the given context.,3603323187
+178,Choose the correct answer: What is the American Petroleum Institute (API) gravity? among the listed options.,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,No match found.,0.0,live_api,choose the correct answer: what is the american petroleum institute (api) gravity? among the listed options.,84722910
+179,Identify the correct statement: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,identify the correct statement: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,755297117
+180,What is the Kutta condition?,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"During the time of the first flights, Frederick W. Lanchester, Martin Kutta, and Nikolai Zhukovsky independently created theories that connected circulation of a fluid flow to lift. Kutta and Zhukovsky went on to develop a two-dimensional wing theory. Expanding upon the work of Lanchester, Ludwig Prandtl is credited with developing the mathematics behind thin-airfoil and lifting-line theories as well as work with boundary layers.
+
+As a rule of thumb, if the condition number , then up to  digits of accuracy may be lost on top of what would be lost to the numerical method due to loss of precision from arithmetic methods. However, the condition number does not give the exact value of the maximum inaccuracy that may occur in the algorithm. It generally just bounds it with an estimate (whose computed value depends on the choice of the norm to measure the inaccuracy).
+
+The concept of Design by Contract is central to Eiffel. The contracts assert what must be true before a routine is executed (precondition) and what must hold to be true after the routine finishes (post-condition). Class Invariant contracts define what assertions must hold true both before and after any feature of a class is accessed (both routines and attributes). Moreover, contracts codify into executable code developer and designers assumptions about the operating environment of the features of a class or the class as a whole by means of the invariant.",1.0,local,what is the kutta condition?,3825678786
+181,Which of the following is correct? What is the significance of the discovery of the Crab pulsar? from the following choices.,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+The approach to acting adopted by other theatre practitioners involve varying degrees of concern with the semiotics of acting. Konstantin Stanislavski, for example, addresses the ways in which an actor, building on what he calls the ""experiencing"" of a role, should also shape and adjust a performance in order to support the overall significance of the drama—a process that he calls establishing the ""perspective of the role"". The semiotics of acting plays a far more central role in Bertolt Brecht's epic theatre, in which an actor is concerned to bring out clearly the socio historical significance of behaviour and action by means of specific performance choices—a process that he describes as establishing the ""not/but"" element in a performed physical ""gestus"" within context of the play's overall ""Fabel"". Eugenio Barba argues that actors ought not to concern themselves with the significance of their performance behaviour; this aspect is the responsibility, he claims, of the director, who weaves the signifying elements of an actor's performance into the director's dramaturgical ""montage"".",0.75,local,which of the following is correct? what is the significance of the discovery of the crab pulsar? from the following choices.,1630289603
+182,Choose the correct answer: What is water hammer? based on the given context.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing structures.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to boost the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.625,local,choose the correct answer: what is water hammer? based on the given context.,3126319755
+183,What is the difference between natural convection and forced convection?,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,"All amplifiers generate heat through electrical losses. The amplifier must dissipate this heat via convection or forced air cooling. Heat can damage or reduce electronic component service life. Designers and installers must also consider heating effects on adjacent equipment.
+
+Without workable alternatives to explain the stripes, geophysicists were forced to conclude that Holmes had been right: ocean rifts were sites of perpetual orogeny at the boundaries of convection cells. By 1967, barely two decades after discovery of the mid-oceanic rifts, and a decade after discovery of the striping, plate tectonics had become axiomatic to modern geophysics.
+
+From the 1930s to the late 1950s, works by Vening-Meinesz, Holmes, Umbgrove, and numerous others outlined concepts that were close or nearly identical to modern plate tectonics theory, which has encompassed and superseded continental drift. The English geologist Arthur Holmes proposed in 1920 that plate junctions might lie beneath the sea, and in 1928 that convection currents within the mantle might be the driving force. Holmes's views were particularly influential: in his bestselling textbook, Principles of Physical Geology, he included a chapter on continental drift, proposing that Earth's mantle contained convection cells which dissipated radioactive heat and moved the crust at the surface. Holmes's proposal resolved the phase disequilibrium objection (the underlying fluid was kept from solidifying by radioactive heating from the core). However, scientific communication in the 1930s and 1940s was inhibited by World War II, and the theory still required work to overcome the orogeny and isostasy objections. Worse, the most viable forms of the theory predicted the existence of convection cell boundaries reaching deep into the Earth, which had not been observed.",0.4,local,what is the difference between natural convection and forced convection?,2275276043
+184,What is geometric quantization in mathematical physics?,Geometric quantization is a mathematical approach to defining a classical theory corresponding to a given quantum theory. It attempts to carry out quantization in such a way that certain analogies between the quantum theory and the classical theory are lost.,Geometric quantization is a mathematical approach to defining a quantum theory corresponding to a given classical theory. It attempts to carry out quantization in such a way that certain analogies between the classical theory and the quantum theory are lost.,Geometric quantization is a mathematical approach to defining a classical theory corresponding to a given quantum theory. It attempts to carry out quantization in such a way that certain analogies between the quantum theory and the classical theory remain manifest.,Geometric quantization is a mathematical approach to defining a quantum theory corresponding to a given classical theory. It attempts to carry out quantization in such a way that certain analogies between the classical theory and the quantum theory are not important.,Geometric quantization is a mathematical approach to defining a quantum theory corresponding to a given classical theory. It attempts to carry out quantization in such a way that certain analogies between the classical theory and the quantum theory remain manifest.,E,"Gauge theory is the study of connections on vector bundles and principal bundles, and arises out of problems in mathematical physics and physical gauge theories which underpin the standard model of particle physics. Gauge theory is concerned with the study of differential equations for connections on bundles, and the resulting geometric moduli spaces of solutions to these equations as well as the invariants that may be derived from them. These equations often arise as the Euler–Lagrange equations describing the equations of motion of certain physical systems in quantum field theory, and so their study is of considerable interest in physics.
+
+Category theory has been applied in other fields as well, see applied category theory. For example, John Baez has shown a link between Feynman diagrams in physics and monoidal categories. Another application of category theory, more specifically topos theory, has been made in mathematical music theory, see for example the book The Topos of Music, Geometric Logic of Concepts, Theory, and Performance by Guerino Mazzola.
+
+In geometric figures and mathematical expressions, it is also common to use Greek letters (α, β, γ, θ, φ, ...) or lower case Roman letters (a, b, c, ...) as variables to represent the size of an angle. Angular measure is commonly a scalar quantity, although in physics and some fields of mathematics, signed angles are used by convention to indicate a direction of rotation: positive for anti-clockwise; negative for clockwise.",0.75,local,what is geometric quantization in mathematical physics?,775930647
+185,Which of the following is correct? What is the piezoelectric strain coefficient for AT-cut quartz crystals?,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"The piezoelectric properties of crystalline quartz were discovered by Jacques and Pierre Curie in 1880. The first crystal oscillator was invented in 1917 by Alexander M. Nicolson, after which the first quartz crystal oscillator was built by Walter G. Cady in 1921. In 1927 the first quartz clock was built by Warren Marrison and J.W. Horton at Bell Telephone Laboratories in Canada. The following decades saw the development of quartz clocks as precision time measurement devices in laboratory settings—the bulky and delicate counting electronics, built with vacuum tubes at the time, limited their practical use elsewhere. The National Bureau of Standards (now NIST) based the time standard of the United States on quartz clocks from late 1929 until the 1960s, when it changed to atomic clocks. In 1969, Seiko produced the world's first quartz wristwatch, the Astron. Their inherent accuracy and low cost of production resulted in the subsequent proliferation of quartz clocks and watches.",0.4444444444444444,local,which of the following is correct? what is the piezoelectric strain coefficient for at-cut quartz crystals?,704222317
+186,Choose the correct answer: What is the role of methane in Fischer-Tropsch processes?,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,"With regard to synthetic fuels, an old but still important process is the Fischer–Tropsch synthesis of hydrocarbons from synthesis gas, which itself is processed via water-gas shift reactions, catalyzed by iron. The Sabatier reaction produces methane from carbon dioxide and hydrogen. Biodiesel and related biofuels require processing via both inorganic and biocatalysts.
+
+Methanol is produced by the hydrogenation of carbon monoxide. In a related reaction, the hydrogenation of carbon monoxide is coupled to C−C bond formation, as in the Fischer–Tropsch process where carbon monoxide is hydrogenated to liquid hydrocarbon fuels. This technology allows coal or biomass to be converted to diesel.",0.375,local,choose the correct answer: what is the role of methane in fischer-tropsch processes?,3075282250
+187,Pick the best possible answer: What is organography? among the listed options.,Organography is the study of the stem and root of plants.,Organography is the scientific description of the structure and function of the organs of living things.,"Organography is the study of the development of organs from the ""growing points"" or apical meristems.",Organography is the study of the commonality of development between foliage leaves and floral leaves.,Organography is the study of the relationship between different organs and different functions in plants.,B,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.25,local,pick the best possible answer: what is organography? among the listed options.,1914656993
+188,Select the most accurate option: What is reciprocal length or inverse length? based on the given context.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).
+
+where  is the attenuation at a given wavelength ,  is the particle concentration as a number density, and  is the path length. The absorbance of the radiation is the logarithm (decadic or, more usually, natural) of the reciprocal of the transmittance :",0.45454545454545453,local,select the most accurate option: what is reciprocal length or inverse length? based on the given context.,1673859766
+189,Select the most accurate option: What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? carefully.,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.",0.42105263157894735,local,select the most accurate option: what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? carefully.,1862901019
+190,Pick the best possible answer: What is the distinction between natural convection and forced convection? from the following choices.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,"860–880 Lake Shore Drive (officially 860–880 North Lake Shore Drive) are a pair of glass-and-steel apartment towers along Lake Shore Drive in Chicago, Illinois, United States. Located in the Streeterville neighborhood, within the Near North Side community area, the buildings were designed in the International Style by Ludwig Mies van der Rohe and were his first high-rise design. Holsman, Holsman, Klekamp & Taylor and Pace Associates were also involved with the design as the associated architects. Each of the towers is identical in shape and materials, measuring 270 feet (82 m) tall with 26 stories. The buildings are listed on the National Register of Historic Places and are designated as a Chicago Landmark.
+The two buildings occupy rectangular footprints, being arranged on a 3-by-5 grid of square bays, each measuring 21 feet (6.4 m) on each side. The south tower at 860 North Lake Shore Drive is oriented west–east, while the north tower at 880 North Lake Shore Drive is oriented north–so",0.0,live_api,pick the best possible answer: what is the distinction between natural convection and forced convection? from the following choices.,1700265130
+191,Identify the correct statement: What is the main sequence in astronomy? carefully.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar structure.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+The main use of diacritics in Latin script is to change the sound-values of the letters to which they are added. Historically, English has used the diaeresis diacritic to indicate the correct pronunciation of ambiguous words, such as ""coöperate"", without which the <oo> letter sequence could be misinterpreted to be pronounced . Other examples are the acute and grave accents, which can indicate that a vowel is to be pronounced differently from what is  normal in that position, for example not reduced to /ə/ or silent as in the case of the two uses of the letter e in the noun résumé (as opposed to the verb resume) and the help sometimes provided in the pronunciation of some words such as doggèd, learnèd, blessèd, and especially words pronounced differently than normal in poetry (for example movèd, breathèd).
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.7142857142857143,local,identify the correct statement: what is the main sequence in astronomy? carefully.,947740868
+192,Select the most accurate option: What is the propagation constant in sinusoidal waves? among the listed options.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.0,live_api,select the most accurate option: what is the propagation constant in sinusoidal waves? among the listed options.,4007646660
+193,What is the relationship between Coordinated Universal Time (UTC) and Universal Time (UT1)?,UTC and Universal Time (UT1) are identical time scales that are used interchangeably in science and engineering.,"UTC is a time scale that is completely independent of Universal Time (UT1). UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by a non-integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by an integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".",UTC is a time scale that is based on the irregularities in Earth's rotation and is completely independent of Universal Time (UT1).,D,"Relation to UTC 
+Contrary to TAI, UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time by a constant offset. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2.  Afterwards, these adjustments were made only in whole seconds to approximate UT1. This was a compromise arrangement in order to enable a publicly broadcast time scale. The less frequent whole-second adjustments meant that the time scale would be more stable and easier to synchronize internationally. The fact that it continues to approximate UT1 means that tasks, such as navigation, which require a source of Universal Time continue to be well served by the public broadcast of UTC.
+
+The BIPM has an important role in maintaining accurate worldwide time of day. It combines, analyses, and averages the official atomic time standards of member nations around the world to create a single, official Coordinated Universal Time (UTC).
+
+International Atomic Time (TAI, from its French name )Temps atomique 1975 is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid. TAI is a weighted average of the time kept by over 450 atomic clocks in over 80 national laboratories worldwide. It is a continuous scale of time, without leap seconds, and it is the principal realisation of Terrestrial Time (with a fixed offset of epoch). It is the basis for Coordinated Universal Time (UTC), which is used for civil timekeeping all over the Earth's surface and which has leap seconds.",0.8571428571428571,local,what is the relationship between coordinated universal time (utc) and universal time (ut1)?,1122727045
+194,Identify the correct statement: What is the Minkowski diagram used for? among the listed options.,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.1111111111111111,live_api,identify the correct statement: what is the minkowski diagram used for? among the listed options.,2883544962
+195,Select the most accurate option: What are coherent turbulent structures?,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the procedures of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the approachs of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the procedures of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the procedures of time-averaged statistics cannot be applied.",C,"Development communication refers to the use of communication to facilitate social development. Development communication engages stakeholders and policy makers, establishes conducive environments, assesses risks and opportunities and promotes information exchange to create positive social change via sustainable development. Development communication techniques include information dissemination and education, behavior change, social marketing, social mobilization, media advocacy, communication for social change, and community participation.
+
+Development communication has been labeled as the ""Fifth Theory of the Press"", with ""social transformation and development"", and ""the fulfillment of basic needs"" as its primary purposes. Jamias articulated the philosophy of development communication which is anchored on three main ideas. Their three main ideas are: purposive, value-laden, and pragmatic. Nora C. Quebral expanded the definition, calling it ""the art and science of human communication a",0.0,live_api,select the most accurate option: what are coherent turbulent structures?,655857679
+196,Choose the correct answer: Which of the following statements is true about the categorization of planetary structures according to their orbital dynamics? based on the given context.,Planetary mechanisms cannot be categorized based on their orbital dynamics.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the framework.",Planetary frameworks can only be categorized as resonant or non-resonant-interacting.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary structures can only be categorized as hierarchical or non-hierarchical.,D,"The relationship between science and religion involves discussions that interconnect the study of the natural world, history, philosophy, and theology. Even though the ancient and medieval worlds did not have conceptions resembling the modern understandings of ""science"" or of ""religion"", certain elements of modern ideas on the subject recur throughout history. The pair-structured phrases ""religion and science"" and ""science and religion"" first emerged in the literature during  the 19th century. This coincided with the refining of ""science"" (from the studies of ""natural philosophy"") and of ""religion"" as distinct concepts in the preceding few centuries—partly due to professionalization of the sciences, the Protestant Reformation, colonization, and globalization. Since then the relationship between science and religion has been characterized in terms of ""conflict"", ""harmony"", ""complexity"", and ""mutual independence"", among others.
+Both science and religion are complex social and cultural en",0.0,live_api,choose the correct answer: which of the following statements is true about the categorization of planetary structures according to their orbital dynamics? based on the given context.,1496130637
+197,Pick the best possible answer: What is the formalism that angular momentum is associated with in rotational invariance? based on the given context.,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.
+
+Lagrangian formalism 
+In Lagrangian mechanics, angular momentum for rotation around a given axis, is the conjugate momentum of the generalized coordinate of the angle around the same axis. For example, , the angular momentum around the z axis, is:",0.5714285714285714,local,pick the best possible answer: what is the formalism that angular momentum is associated with in rotational invariance? based on the given context.,2762126623
+198,Pick the best possible answer: What is the role of axioms in a formal principle? based on the given context.,"Basis statements called axioms form the foundation of a formal principle and, together with the deducing rules, help in deriving a set of statements called theorems using proof principle.",Axioms are supplementary statements added to a formal principle that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal principle, providing additional perspective to theorems derived from the principle.",The axioms in a principle are used for experimental validation of the theorems derived from the statements in the principle.,"The axioms in a formal principle are added to prove that the statements derived from the principle are true, irrespective of their validity in the real world.",A,"Note that ""completeness"" has a different meaning here than it does in the context of Gödel's first incompleteness theorem, which states that no recursive, consistent set of non-logical axioms  of the Theory of Arithmetic is complete, in the sense that there will always exist an arithmetic statement  such that neither  nor  can be proved from the given set of axioms.
+
+History 
+The general idea of a hierarchy of grammars was first described by Noam Chomsky in ""Three models for the description of language"" during the formalization of transformational-generative grammar (TGG). Marcel-Paul Schützenberger also played a role in the development of the theory of formal languages; the paper ""The algebraic theory of context free languages"" describes the modern hierarchy, including context-free grammars.
+
+Decision problems as formal languages
+Decision problems are one of the central objects of study in computational complexity theory. A decision problem is a type of computational problem where the answer is either yes or no (alternatively, 1 or 0). A decision problem can be viewed as a formal language, where the members of the language are instances whose output is yes, and the non-members are those instances whose output is no. The objective is to decide, with the aid of an algorithm, whether a given input string is a member of the formal language under consideration. If the algorithm deciding this problem returns the answer yes, the algorithm is said to accept the input string, otherwise it is said to reject the input.",0.5454545454545454,local,pick the best possible answer: what is the role of axioms in a formal principle? based on the given context.,674386200
+199,What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation?,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.
+
+See also
+ Invariant (physics)
+ Momentum
+ Cauchy momentum equation
+ Energy
+ Conservation of energy and the First law of thermodynamics
+ Conservative system
+ Conserved quantity
+ Some kinds of helicity are conserved in dissipationless limit: hydrodynamical helicity, magnetic helicity, cross-helicity.
+ Principle of mutability
+ Conservation law of the Stress–energy tensor
+ Riemann invariant
+ Philosophy of physics
+ Totalitarian principle
+ Convection–diffusion equation
+ Uniformity of nature",0.7142857142857143,local,what is the relationship between the cauchy momentum equation and the navier-stokes equation?,3826647776
+200,Select the most accurate option: What is Modified Newtonian Dynamics (MOND)? among the listed options.,MOND is a framework that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's framework of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a concept that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,No match found.,0.0,live_api,select the most accurate option: what is modified newtonian dynamics (mond)? among the listed options.,2416576723
+201,Pick the best possible answer: What is a trophic level in an ecological pyramid? based on the given context.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecostructure.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.",0.36363636363636365,local,pick the best possible answer: what is a trophic level in an ecological pyramid? based on the given context.,506348218
+202,Identify the correct statement: What is the main advantage of ferroelectric memristors? among the listed options.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,No match found.,0.0,live_api,identify the correct statement: what is the main advantage of ferroelectric memristors? among the listed options.,685624952
+203,Determine the correct option: What is the interstellar medium (ISM)?,"The matter and radiation that exist in the space between the star structures in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar structure, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.
+
+Interstellar medium
+The cyanide radical •CN has been identified in interstellar space. Cyanogen, , is used to measure the temperature of interstellar gas clouds.
+
+In his 1992 book entitled Columbus and Other Cannibals, American historian Jack D. Forbes wrote that the animism of native and folk religious beliefs of Africa, Asia and the Americas was synonymous with ""life-ism"", and that ""perhaps that is what we need, 'lifeism', more respect for life, more respect for the living, more respect for all forms of life."" In the 2012 book The Routledge Companion to Religion and Science it is noted that ""the European tradition of referring to Native world-views as forms of animism is quite correct, if understood non-reductively, since the term ""animism"" can literally be understood as ""life-ism.""",0.6666666666666666,local,determine the correct option: what is the interstellar medium (ism)?,1675634574
+204,Pick the best possible answer: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy?,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.5384615384615384,local,pick the best possible answer: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy?,1121726189
+205,Identify the correct statement: What is a crossover experiment? based on the given context.,An experiment that involves crossing over two different types of materials to create a new material.,"A type of experiment used to distinguish between different mechanisms proposed for a chemical reaction, such as intermolecular vs. intramolecular mechanisms.",An experiment that involves crossing over two different types of organisms to create a hybrid.,An experiment that involves crossing over two different types of cells to create a new cell.,An experiment that involves crossing over two different chemicals to create a new substance.,B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is a crossover experiment? based on the given context.,100979233
+206,Determine the correct option: What is the Droste effect?,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Legal scholar Jim Drennan, an expert on the court system at the Institute of Government at the University of North Carolina at Chapel Hill, told the Winston-Salem Journal in a 2007 interview that the ability to use this form of guilty plea as an option in courts had a far-reaching effect throughout the United States: ""We have lots of laws, but human interaction creates unique circumstances and the law has to adapt."" He added that the Supreme Court ""had to make a decision about what to do. One of the things the court has to do is figure out how to answer new questions, and that is what happened in this case.""
+
+Statistics regarding the effects of copyright infringement are difficult to determine. Studies have attempted to determine whether there is a monetary loss for industries affected by copyright infringement by predicting what portion of pirated works would have been formally purchased if they had not been freely available.Butler, S. Piracy Losses ""Billboard"" 199(36) Other reports indicate that copyright infringement does not have an adverse effect on the entertainment industry, and can have a positive effect. In particular, a 2014 university study concluded that free music content, accessed on YouTube, does not necessarily hurt sales, instead has the potential to increase sales.",0.8,local,determine the correct option: what is the droste effect?,2606377414
+207,Select the most accurate option: What is a Hilbert space in quantum mechanics? carefully.,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical structure is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",0.4444444444444444,local,select the most accurate option: what is a hilbert space in quantum mechanics? carefully.,873672788
+208,Pick the best possible answer: What is the second law of thermodynamics? carefully.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated frameworks left to spontaneous evolution can lower, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic structure and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"For the foundations of thermodynamics, the conceptual importance of this was emphasized by Bryan, by Carathéodory, and by Born. The reason is that calorimetry presupposes a type of temperature as already defined before the statement of the first law of thermodynamics, such as one based on empirical scales. Such a presupposition involves making the distinction between empirical temperature and absolute temperature. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis.
+
+Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.
+
+External links 
+ Chemical Thermodynamics - University of North Carolina
+ Chemical energetics (Introduction to thermodynamics and the First Law)
+ Thermodynamics of chemical equilibrium (Entropy, Second Law and free energy)",0.5,local,pick the best possible answer: what is the second law of thermodynamics? carefully.,3182289172
+209,Determine the correct option: What did Newton adopt after his correspondence with Hooke in 1679-1680? from the following choices.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,determine the correct option: what did newton adopt after his correspondence with hooke in 1679-1680? from the following choices.,3492254086
+210,Select the most accurate option: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,select the most accurate option: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,3170708881
+211,Select the most accurate option: What is the Peierls bracket in canonical quantization? carefully.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization technique.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization technique.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization technique that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization procedure.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization procedure.,C,No match found.,0.0,live_api,select the most accurate option: what is the peierls bracket in canonical quantization? carefully.,2362493961
+212,Which of the following is correct? What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors?,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"In quantum phase transitions,  the temperature is set to absolute zero, and the non-thermal control parameter, such as pressure or magnetic field,  causes the phase transitions when order is destroyed by quantum fluctuations originating from the Heisenberg uncertainty principle. Here, the different quantum phases of the system refer to distinct ground states of the Hamiltonian matrix.  Understanding the behavior of quantum phase transition is important in the difficult tasks of explaining the properties of rare-earth magnetic insulators, high-temperature superconductors, and other substances.
+
+Stable magnetic monopoles are a problem for Grand Unified Theories, which propose that at high temperatures (such as in the early universe), the electromagnetic force, strong, and weak nuclear forces are not actually fundamental forces but arise due to spontaneous symmetry breaking from a single gauge theory. These theories predict a number of heavy, stable particles that have not been observed in nature. The most notorious is the magnetic monopole, a kind of stable, heavy ""charge"" of magnetic field.
+
+Because the hexagons in the T and O sheets are slightly different in size, the sheets are slightly distorted when they bond into a TOT layer. This breaks the hexagonal symmetry and reduces it to monoclinic symmetry. However, the original hexahedral symmetry is discernible in the pseudohexagonal character of biotite crystals.",0.8181818181818182,local,which of the following is correct? what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors?,2847673664
+213,Select the most accurate option: Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect? carefully.,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.",0.375,local,select the most accurate option: who was the first to determine the velocity of a star moving away from the earth using the doppler effect? carefully.,1652579721
+214,Which of the following is correct? What is the American Petroleum Institute (API) gravity? carefully.,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,No match found.,0.0,live_api,which of the following is correct? what is the american petroleum institute (api) gravity? carefully.,3308010408
+215,Which of the following statements accurately describes the characteristics of gravitational waves?,"Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.","Gravitational waves have an amplitude denoted by λ, which represents the distance between points of maximum stretch or squeeze. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by f, which is the frequency of the wave's oscillation.","Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.",C,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Gravitational waves
+Gravitational waves are ripples in the curvature of spacetime that propagate as waves at the speed of light, generated in certain gravitational interactions that propagate outward from their source. Gravitational-wave astronomy is an emerging branch of observational astronomy which aims to use gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs, neutron stars, and black holes; and events such as supernovae, and the formation of the early universe shortly after the Big Bang.
+
+The first, indirect, detection of gravitational waves came in the 1970s through observation of a pair of closely orbiting neutron stars, PSR B1913+16. The explanation for the decay in their orbital period was that they were emitting gravitational waves. Einstein's prediction was confirmed on 11 February 2016, when researchers at LIGO published the first observation of gravitational waves, detected on Earth on 14 September 2015, nearly one hundred years after the prediction.",0.375,local,which of the following statements accurately describes the characteristics of gravitational waves?,2529904568
+216,Select the most accurate option: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? based on the given context.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,select the most accurate option: what is the 'reactive leidenfrost effect' observed in non-volatile materials? based on the given context.,3103638297
+217,Determine the correct option: Who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism?,Maxwell,Einstein,Galileo,Faraday,Newton,A,"The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Protoscience, early sciences, and natural philosophies such as alchemy and astrology that existed during the Bronze Age, Iron Age, classical antiquity and the Middle Ages, declined after the emergence of modern sciences during the Scientific Revolution.
+The earliest roots of scientific thinking and practice can be traced to Ancient Egypt and Mesopotamia during the 3rd and 2nd millennia BCE. These civilizations' contributions to mathematics, astronomy, and medicine influenced later Greek natural philosophy of classical antiquity, wherein formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Latin-speaking Western Europe during the early centuries (400 to 1000 CE)",0.11764705882352941,live_api,determine the correct option: who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism?,2764965333
+218,Identify the correct statement: What is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,No match found.,0.0,live_api,identify the correct statement: what is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,2886851932
+219,Pick the best possible answer: What is Minkowski space? based on the given context.,Minkowski space is a physical space where objects move in a straight line unless acted upon by a force.,Minkowski space is a mathematical model that combines inertial space and time manifolds with a non-inertial reference frame of space and time into a four-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a two-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a three-dimensional model relating a position to the field.,Minkowski space is a physical space where objects move in a curved line unless acted upon by a force.,B,"In theoretical physics, the BRST formalism, or BRST quantization (where the BRST refers to the last names of Carlo Becchi, Alain Rouet, Raymond Stora and Igor Tyutin) denotes a relatively rigorous mathematical approach to quantizing a field theory with a gauge symmetry.  Quantization rules in earlier quantum field theory (QFT) frameworks resembled ""prescriptions"" or ""heuristics"" more than proofs, especially in non-abelian QFT, where the use of ""ghost fields"" with superficially bizarre properties is almost unavoidable for technical reasons related to renormalization and anomaly cancellation.
+The BRST global supersymmetry  introduced in the mid-1970s  was quickly understood to rationalize the introduction of these Faddeev–Popov ghosts and their exclusion from ""physical"" asymptotic states when performing QFT calculations. Crucially, this symmetry of the path integral is preserved in loop order, and thus prevents introduction of counterterms which might spoil renormalizability of gauge the",0.0,live_api,pick the best possible answer: what is minkowski space? based on the given context.,942336158
+220,Select the most accurate option: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? among the listed options.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,select the most accurate option: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? among the listed options.,3865394001
+221,Choose the correct answer: What is the variation between natural convection and forced convection? from the following choices.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,No match found.,0.0,live_api,choose the correct answer: what is the variation between natural convection and forced convection? from the following choices.,1644084204
+222,Determine the correct option: What is indirect photophoresis? based on the given context.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,determine the correct option: what is indirect photophoresis? based on the given context.,1567144825
+223,Select the most accurate option: What is the function of the fibrous cardiac skeleton? based on the given context.,The fibrous cardiac skeleton is a framework of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+An echocardiogram can, within certain limits, produce an accurate assessment of the direction of blood flow and the velocity of blood and cardiac tissue at any arbitrary point using the Doppler effect. One of the limitations is that the ultrasound beam should be as parallel to the blood flow as possible. Velocity measurements allow assessment of cardiac valve areas and function, abnormal communications between the left and right side of the heart, leaking of blood through the valves (valvular regurgitation), and calculation of the cardiac output. Contrast-enhanced ultrasound using gas-filled microbubble contrast media can be used to improve velocity or other flow-related medical measurements.
+
+The function of a module is what it does.
+ The context of a module are the elements being performed upon.
+ The logic of a module is how it performs the function.",0.45454545454545453,local,select the most accurate option: what is the function of the fibrous cardiac skeleton? based on the given context.,3827734200
+224,Pick the best possible answer: What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? from the following choices.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.3076923076923077,local,pick the best possible answer: what is the relationship between the cauchy momentum equation and the navier-stokes equation? from the following choices.,405650117
+225,Select the most accurate option: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? from the following choices.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,"The scale is reverse logarithmic: the brighter an object is, the lower its magnitude number. A difference of 1.0 in magnitude corresponds to the brightness ratio of , or about 2.512. For example, a magnitude 2.0 star is 2.512 times as bright as a magnitude 3.0 star, 6.31 times as magnitude 4.0, and 100 times as magnitude 7.0.",0.2777777777777778,local,select the most accurate option: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? from the following choices.,1717403645
+226,What is the synapstor or synapse transistor?,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term depression for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and inactivity-based forgetting.,E,"Transistor amplifiers (or solid state amplifiers) are the most common type of amplifier in use today. A transistor is used as the active element. The gain of the amplifier is determined by the properties of the transistor itself as well as the circuit it is contained within.
+
+The MOSFET (metal–oxide–semiconductor field-effect transistor, or MOS transistor) was invented by Mohamed Atalla and Dawon Kahng at BTL in 1959. It was the first truly compact transistor that could be miniaturised and mass-produced for a wide range of uses. It revolutionized the electronics industry, becoming the most widely used electronic device in the world.
+
+Solid-state electronics came into its own with the emergence of transistor technology. The first working transistor, a germanium-based point-contact transistor, was invented by John Bardeen and Walter Houser Brattain at Bell Labs in 1947, followed by the bipolar junction transistor in 1948.",0.5,local,what is the synapstor or synapse transistor?,1823243617
+227,Determine the correct option: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? among the listed options.,The atmosphere is a structure that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized mechanisms and time-varying forcing from recurrent seasons.",The atmosphere is a framework that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic framework with no order or organization.,The atmosphere is a completely ordered mechanism with no chaos or randomness.,B,No match found.,0.0,live_api,determine the correct option: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? among the listed options.,4257722227
+228,Determine the correct option: What is an order parameter?,An order parameter is a measure of the temperature of a physical structure.,An order parameter is a measure of the gravitational force in a physical structure.,An order parameter is a measure of the magnetic field strength in a physical structure.,An order parameter is a measure of the degree of symmetry breaking in a physical framework.,An order parameter is a measure of the rotational symmetry in a physical structure.,D,"Where  is the first order virial parameter and it depends on the temperature,  is the second order virial parameter of Morse oscillator and it depends on the  parameters of Morse oscillator in addition to the absolute temperature.  is the fractional volume of the system.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+The TRUNCATE function rounds the given number to an integer towards zero. However, it also returns a remainder as a secondary value, making it very easy to determine what value was truncated. It also supports an optional divisor parameter, which can be used to perform Euclidean division trivially:
+(let ((x 1266778)
+      (y 458))
+  (multiple-value-bind (quotient remainder)
+      (truncate x y)
+    (format nil ""~A divided by ~A is ~A remainder ~A"" x y quotient remainder)))",0.8,local,determine the correct option: what is an order parameter?,879518562
+229,Choose the correct answer: What is the Kutta condition? based on the given context.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem.  Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution.  Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.75,local,choose the correct answer: what is the kutta condition? based on the given context.,3417616619
+230,Select the most accurate option: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? from the following choices.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,select the most accurate option: what is the 'reactive leidenfrost effect' observed in non-volatile materials? from the following choices.,4180063283
+231,Determine the correct option: Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect? based on the given context.,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.",0.4375,local,determine the correct option: who was the first to determine the velocity of a star moving away from the earth using the doppler effect? based on the given context.,2734922810
+232,Identify the correct statement: What is the main focus of the Environmental Science Center at Qatar University? based on the given context.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Cloning Fact Sheet  from Human Genome Project Information website.
+ 'Cloning' Freeview video by the Vega Science Trust and the BBC/OU
+ Cloning in Focus, an accessible and comprehensive look at cloning research from the University of Utah's Genetic Science Learning Center
+ Click and Clone. Try it yourself in the virtual mouse cloning laboratory, from the University of Utah's Genetic Science Learning Center
+ ""Cloning Addendum: A statement on the cloning report issues by the President's Council on Bioethics"" . National Review, 15 July 2002 8:45 am",0.38461538461538464,local,identify the correct statement: what is the main focus of the environmental science center at qatar university? based on the given context.,1317173175
+233,Determine the correct option: What is a phageome? among the listed options.,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.",0.42857142857142855,local,determine the correct option: what is a phageome? among the listed options.,453037923
+234,Determine the correct option: What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation? based on the given context.,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.",0.5,local,determine the correct option: what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation? based on the given context.,1727650746
+235,What is the main sequence in astronomy?,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar system.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"Other uses in science and technology
+ A-type main-sequence star, in astronomy, abbreviated A V
+ Aperture value mode, setting on photo cameras that allows to choose a specific aperture value
+
+The scientific activity of Gauss, besides pure mathematics, can be roughly divided into three periods: astronomy was the main focus in the first two decades of the 19th century, geodesy in the third decade, and physics, mainly magnetism, in the fourth decade.
+
+Use in astronomy 
+While the total number of ""catalytic"" nuclei are conserved in the cycle, in stellar evolution the relative proportions of the nuclei are altered.  When the cycle is run to equilibrium, the ratio of the carbon-12/carbon-13 nuclei is driven to 3.5, and nitrogen-14 becomes the most numerous nucleus, regardless of initial composition.  During a star's evolution, convective mixing episodes moves material, within which the CNO cycle has operated, from the star's interior to the surface, altering the observed composition of the star. Red giant stars are observed to have lower carbon-12/carbon-13 and carbon-12/nitrogen-14 ratios than do main sequence stars, which is considered to be convincing evidence for the operation of the CNO cycle.",1.0,local,what is the main sequence in astronomy?,428391653
+236,Select the most accurate option: What is a trophic level in an ecological pyramid? based on the given context.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecomechanism.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.",0.36363636363636365,local,select the most accurate option: what is a trophic level in an ecological pyramid? based on the given context.,1389453613
+237,"Determine the correct option: What is the ""ultraviolet catastrophe""? carefully.",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven framework about the distribution of electromagnetic radiation.,B,"The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy. The Hubble Space Telescope is named after astronomer Edwin Hubble and is one of NASA's Great Observatories. The Space Telescope Science Institute (STScI) selects Hubble's targets and processes the resulting data, while the Goddard Space Flight Center (GSFC) controls the spacecraft.
+Hubble features a 2.4 m (7 ft 10 in) mirror, and its five main instruments observe in the ultraviolet, visible, and near-infrared regions of the electromagnetic spectrum. Hubble's orbit outside the distortion of Earth's atmosphere allows it to capture extremely high-resolution images with substantially lower background light than ground-based telescopes. It has recorded some of the most detailed visible light",0.16666666666666666,live_api,"determine the correct option: what is the ""ultraviolet catastrophe""? carefully.",1592719874
+238,Choose the correct answer: What is water hammer?,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing frameworks.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to enhance the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.",0.4,local,choose the correct answer: what is water hammer?,1562624140
+239,Choose the correct answer: What is water hammer? based on the given context.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing frameworks.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to boost the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.625,local,choose the correct answer: what is water hammer? based on the given context.,3126319755
+240,Determine the correct option: What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? based on the given context.,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a mechanism of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the mechanism. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a structure of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.",0.5333333333333333,local,determine the correct option: what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? based on the given context.,1920661409
+241,Which of the following is correct? What is the significance of the redshift-distance relationship in determining the expansion history of the universe? among the listed options.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models based on the Big Bang concept explain a broad range of phenomena,  including the abundance of light elements, the cosmic microwave background (CMB) radiation, the redshift of galaxies and the large-scale structure of the Universe. The uniformity of the universe, known as the horizon and flatness problems, is explained through cosmic inflation: a phase of accelerated expansion during the earliest stages. Detailed measurements of the expansion rate of the universe place the initial singularity at an estimated  billion years ago, which is considered the age of the universe. A wide range of empirical evidence strongly favors the Big Bang event, which is now widely accepted.: ""At the same time that observations tipped the balance definitely in favor of the relativistic big-bang theory, ...""
+
+The CMB is the key experimental evidence of the Big Bang theory for the origin of the universe. In the Big Bang cosmological models, during the earliest periods, the universe was filled with an opaque fog of dense, hot plasma of sub-atomic particles. As the universe expanded, this plasma cooled to the point where protons and electrons combined to form neutral atoms of mostly hydrogen. Unlike the plasma, these atoms could not scatter thermal radiation by Thomson scattering, and so the universe became transparent. Known as the recombination epoch, this decoupling event released photons to travel freely through space. However, the photons have grown less energetic due to the cosmological redshift associated with the expansion of the universe. The surface of last scattering refers to a shell at the right distance in space so photons are now received that were originally emitted at the time of decoupling.",0.42857142857142855,local,which of the following is correct? what is the significance of the redshift-distance relationship in determining the expansion history of the universe? among the listed options.,4054418828
+242,Identify the correct statement: What are permutation-inversion groups? based on the given context.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.,0.0,live_api,identify the correct statement: what are permutation-inversion groups? based on the given context.,4060872181
+243,Pick the best possible answer: What is X-ray pulsar-based navigation (XNAV)?,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,pick the best possible answer: what is x-ray pulsar-based navigation (xnav)?,2379491188
+244,Pick the best possible answer: What is the definition of Atomristor? from the following choices.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"Non-deterministic computation
+In a non-deterministic model of computation, such as non-deterministic Turing machines, some choices may be made at some steps of the computation. In complexity theory, one considers all possible choices simultaneously, and the non-deterministic time complexity is the time needed, when the best choices are always made. In other words, one considers that the computation is done simultaneously on as many (identical) processors as needed, and the non-deterministic computation time is the time spent by the first processor that finishes the computation. This parallelism is partly amenable to quantum computing via superposed entangled states in running specific quantum algorithms, like e.g. Shor's algorithm for finding the prime factors of an integer.
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by",0.625,local,pick the best possible answer: what is the definition of atomristor? from the following choices.,915509350
+245,Choose the correct answer: What is the function of the fibrous cardiac skeleton?,The fibrous cardiac skeleton is a framework of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+In differential equations, the function  is often used to simplify solutions, even if the final answer is a real function involving sine and cosine. The reason for this is that the exponential function is the eigenfunction of the operation of differentiation.",0.7142857142857143,local,choose the correct answer: what is the function of the fibrous cardiac skeleton?,3675338194
+246,"Determine the correct option: What is a ""coffee ring"" in physics? carefully.",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"Parapsychology is the study of alleged psychic phenomena (extrasensory perception, telepathy, teleportation, precognition, clairvoyance, psychokinesis [also called telekinesis], and psychometry) and other paranormal claims, for example, those related to near-death experiences, synchronicity, apparitional experiences, etc. Criticized as being a pseudoscience, the majority of mainstream scientists reject it. Parapsychology has been criticized for continuing investigation despite being unable to provide reproducible evidence for the existence of any psychic phenomena after more than a century of research.
+Parapsychology research rarely appears in mainstream scientific journals; a few niche journals publish most papers about parapsychology.",0.0,live_api,"determine the correct option: what is a ""coffee ring"" in physics? carefully.",1059871841
+247,Determine the correct option: Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+Concept 
+Diffraction is a general phenomenon of waves, occuring whenever a wavefront is obstructed. The obstruction may be solidly blocking the wave or transparent and shifting the phase of the wave. The waves beyond the obstacle interfere causing a diffraction pattern. The diffraction pattern cannot be predicted by the straight line trajectories of geometrical optics. For a simple example, a strong light source blocked by a solid object does not show a crisp dark shadow when examined carefully.
+
+If light consisted strictly of ordinary or classical particles, and these particles were fired in a straight line through a slit and allowed to strike a screen on the other side, we would expect to see a pattern corresponding to the size and shape of the slit. However, when this ""single-slit experiment"" is actually performed, the pattern on the screen is a diffraction pattern in which the light is spread out. The smaller the slit, the greater the angle of spread. The top portion of the image shows the central portion of the pattern formed when a red laser illuminates a slit and, if one looks carefully, two faint side bands. More bands can be seen with a more highly refined apparatus. The wave theory of light explains the pattern as being the result of the interference of light waves from the slit.",0.5789473684210527,local,determine the correct option: which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,1272115947
+248,Select the most accurate option: What is the Ozma Problem? based on the given context.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Context
+The relation between the complexity classes P and NP is studied in computational complexity theory, the part of the theory of computation dealing with the resources required during computation to solve a given problem. The most common resources are time (how many steps it takes to solve a problem) and space (how much memory it takes to solve a problem).
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Computational problems 
+The decision problem that asks whether a certain string s belongs to the language of a given context-sensitive grammar G, is PSPACE-complete. Moreover, there are context-sensitive grammars whose languages are PSPACE-complete. In other words, there is a context-sensitive grammar G such that deciding whether a certain string s belongs to the language of G is PSPACE-complete (so G is fixed and only s is part of the input of the problem).An example of such a grammar, designed to solve the QSAT problem, is given in",0.5555555555555556,local,select the most accurate option: what is the ozma problem? based on the given context.,933305865
+249,Identify the correct statement: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies?,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,identify the correct statement: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies?,3517350402
+250,Select the most accurate option: What is the Josephson effect? from the following choices.,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.",0.375,local,select the most accurate option: what is the josephson effect? from the following choices.,17268706
+251,Which of the following is correct? What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? from the following choices.,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a framework of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the framework. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a framework of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.",0.6923076923076923,local,which of the following is correct? what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? from the following choices.,1990054803
+252,Which of the following is correct? What are the four qualitative levels of crystallinity described by geologists? carefully.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.1,live_api,which of the following is correct? what are the four qualitative levels of crystallinity described by geologists? carefully.,1414749323
+253,Pick the best possible answer: What is the result of the collapse of a cavitation bubble? among the listed options.,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a minimize in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp enhance in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+The process of bubble generation, and the subsequent growth and collapse of the cavitation bubbles, results in very high energy densities and in very high local temperatures and local pressures at the surface of the bubbles for a very short time.  The overall liquid medium environment, therefore, remains at ambient conditions.  When uncontrolled, cavitation is damaging; by controlling the flow of the cavitation, however, the power can be harnessed and non-destructive.  Controlled cavitation can be used to enhance chemical reactions or propagate certain unexpected reactions because free radicals are generated in the process due to disassociation of vapors trapped in the cavitating bubbles.",0.36363636363636365,local,pick the best possible answer: what is the result of the collapse of a cavitation bubble? among the listed options.,2706829312
+254,Select the most accurate option: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory?,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,select the most accurate option: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory?,1446648631
+255,Select the most accurate option: What is the information loss paradox in black holes? based on the given context.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.",0.4166666666666667,local,select the most accurate option: what is the information loss paradox in black holes? based on the given context.,1065287161
+256,Determine the correct option: What is the main focus of cryogenic and noble liquid detectors in dark matter experiments? carefully.,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.
+
+WIMP searches mostly use either cryogenic or noble liquid detector technologies. Cryogenic detectors, operating at temperatures below 100 mK, detect the heat produced when a particle hits an atom in a crystal absorber such as germanium. Experiments using this technology include SuperCDMS and EDELWEISS.",0.5384615384615384,local,determine the correct option: what is the main focus of cryogenic and noble liquid detectors in dark matter experiments? carefully.,3808114950
+257,Which of the following is correct? Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.
+
+Dysprosium and holmium have the highest magnetic strengths of the elements, especially at low temperatures. Dysprosium has a simple ferromagnetic ordering at temperatures below its Curie temperature of , at which point it undergoes a first-order phase transition from the orthorhombic crystal structure to hexagonal close-packed (hcp). It then has a helical antiferromagnetic state, in which all of the atomic magnetic moments in a particular basal plane layer are parallel and oriented at a fixed angle to the moments of adjacent layers. This unusual antiferromagnetism transforms into a disordered (paramagnetic) state at . It transforms from the hcp phase to the body-centered cubic phase at .
+
+A core standard valve layout based on the action of three valves had become almost universal by (at latest) 1864 as witnessed by Arban's method published in that year. The effect of a particular combination of valves may be seen in the table below. This table is correct for the core three-valve layout on almost any modern valved brass instrument. The most common four-valve layout is a superset of the well-established three-valve layout and is noted in the table, despite the exposition of four-valve and also five-valve systems (the latter used on the tuba) being incomplete in this article.",0.5833333333333334,local,which of the following is correct? which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,1914283401
+258,Choose the correct answer: What is a uniform tiling in the hyperbolic plane? among the listed options.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,No match found.,0.0,live_api,choose the correct answer: what is a uniform tiling in the hyperbolic plane? among the listed options.,908239560
+259,Identify the correct statement: What is the effect generated by a spinning superconductor? among the listed options.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,identify the correct statement: what is the effect generated by a spinning superconductor? among the listed options.,145474730
+260,What is the definition of Atomristor?,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"While the use of the word 'artist' is common, there is no agreed upon definition of art—this makes the definition of who is and is not an artist indeterminate. Artists and philosophers still debate their interpretation of art's definition—on what does and does not count as art.
+
+This leads to a corresponding distinction between nominal and real definitions. A nominal definition is the definition explaining what a word means (i.e., which says what the ""nominal essence"" is), and is definition in the classical sense as given above. A real definition, by contrast, is one expressing the real nature or quid rei of the thing.
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.5,local,what is the definition of atomristor?,1289646896
+261,What is the significance of regularization in terms of renormalization problems in physics?,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a theory that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a system below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a system under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a system below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.
+
+One of the most cited works in this area examines how experts (PhD students in physics) and novices (undergraduate students that completed one semester of mechanics) categorize and represent physics problems. They found that novices sort problems into categories based upon surface features (e.g., keywords in the problem statement or visual configurations of the objects depicted). Experts, however, categorize problems based upon their deep structures (i.e., the main physics principle used to solve the problem).Chi et al. 1981",0.8333333333333334,local,what is the significance of regularization in terms of renormalization problems in physics?,1643371122
+262,Determine the correct option: What is the most popular explanation for the shower-curtain effect? from the following choices.,The pressure differential between the inside and outside of the shower,The lower in velocity resulting in an raise in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,determine the correct option: what is the most popular explanation for the shower-curtain effect? from the following choices.,4232686333
+263,Select the most accurate option: What is a Hilbert space in quantum mechanics? among the listed options.,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical framework is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",0.36363636363636365,local,select the most accurate option: what is a hilbert space in quantum mechanics? among the listed options.,4147833168
+264,Which of the following is correct? What is the function of the fibrous cardiac skeleton? carefully.,The fibrous cardiac skeleton is a mechanism of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+Mechanism of action 
+Cardiac glycosides affect the sodium-potassium ATPase pump in cardiac muscle cells to alter their function. Normally, these sodium-potassium pumps move potassium ions in and sodium ions out. Cardiac glycosides, however, inhibit this pump by stabilizing it in the E2-P transition state, so that sodium cannot be extruded: intracellular sodium concentration therefore increases. With regard to potassium ion movement, because both cardiac glycosides and potassium compete for binding to the ATPase pump, changes in extracellular potassium concentration can potentially lead to altered drug efficacy. Nevertheless, by carefully controlling the dosage, such adverse effects can be avoided. Continuing on with the mechanism, raised intracellular sodium levels inhibit the function of a second membrane ion exchanger, NCX, which is responsible for pumping calcium ions out of the cell and sodium ions in at a ratio of . Thus, calcium ions are also not extruded and will begin to build up inside the cell as well.
+
+Clinical cardiac electrophysiology is a branch of the medical specialty of cardiology and is concerned with the study and treatment of rhythm disorders of the heart. Cardiologists with expertise in this area are usually referred to as electrophysiologists. Electrophysiologists are trained in the mechanism, function, and performance of the electrical activities of the heart. Electrophysiologists work closely with other cardiologists and cardiac surgeons to assist or guide therapy for heart rhythm disturbances (arrhythmias). They are trained to perform interventional and surgical procedures to treat cardiac arrhythmia.",0.625,local,which of the following is correct? what is the function of the fibrous cardiac skeleton? carefully.,924393369
+265,Choose the correct answer: What is the definition of anatomy? based on the given context.,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.
+
+Definition
+A decision problem is the formal language of all inputs for which the output (the answer to the yes-no question on a given input) is YES.
+
+where  is some set with cardinality . One can show that the generalized binomial coefficient is well-defined, in the sense that no matter what set we choose to represent the cardinal number ,  will remain the same. For finite cardinals, this definition coincides with the standard definition of the binomial coefficient.",0.75,local,choose the correct answer: what is the definition of anatomy? based on the given context.,511880069
+266,Determine the correct option: What is the distinction between natural convection and forced convection?,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,"All amplifiers generate heat through electrical losses. The amplifier must dissipate this heat via convection or forced air cooling. Heat can damage or reduce electronic component service life. Designers and installers must also consider heating effects on adjacent equipment.
+
+Without workable alternatives to explain the stripes, geophysicists were forced to conclude that Holmes had been right: ocean rifts were sites of perpetual orogeny at the boundaries of convection cells. By 1967, barely two decades after discovery of the mid-oceanic rifts, and a decade after discovery of the striping, plate tectonics had become axiomatic to modern geophysics.
+
+From the 1930s to the late 1950s, works by Vening-Meinesz, Holmes, Umbgrove, and numerous others outlined concepts that were close or nearly identical to modern plate tectonics theory, which has encompassed and superseded continental drift. The English geologist Arthur Holmes proposed in 1920 that plate junctions might lie beneath the sea, and in 1928 that convection currents within the mantle might be the driving force. Holmes's views were particularly influential: in his bestselling textbook, Principles of Physical Geology, he included a chapter on continental drift, proposing that Earth's mantle contained convection cells which dissipated radioactive heat and moved the crust at the surface. Holmes's proposal resolved the phase disequilibrium objection (the underlying fluid was kept from solidifying by radioactive heating from the core). However, scientific communication in the 1930s and 1940s was inhibited by World War II, and the theory still required work to overcome the orogeny and isostasy objections. Worse, the most viable forms of the theory predicted the existence of convection cell boundaries reaching deep into the Earth, which had not been observed.",0.25,local,determine the correct option: what is the distinction between natural convection and forced convection?,1030448109
+267,Select the most accurate option: What is radiometric dating? among the listed options.,"Radiometric dating is a procedure of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Protoscience, early sciences, and natural philosophies such as alchemy and astrology that existed during the Bronze Age, Iron Age, classical antiquity and the Middle Ages, declined after the emergence of modern sciences during the Scientific Revolution.
+The earliest roots of scientific thinking and practice can be traced to Ancient Egypt and Mesopotamia during the 3rd and 2nd millennia BCE. These civilizations' contributions to mathematics, astronomy, and medicine influenced later Greek natural philosophy of classical antiquity, wherein formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Latin-speaking Western Europe during the early centuries (400 to 1000 CE)",0.0,live_api,select the most accurate option: what is radiometric dating? among the listed options.,578778917
+268,Identify the correct statement: What is the definition of an improper rotation?,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"Substitution is replacing the terms in an expression to create a new expression. Substituting 3 for  in the expression  makes a new expression  with meaning . Substituting the terms of a statement makes a new statement. When the original statement is true independently of the values of the terms, the statement created by substitutions is also true. Hence, definitions can be made in symbolic terms and interpreted through substitution: if  is meant as the definition of  as the product of  with itself, substituting  for  informs the reader of this statement that  means . Often it's not known whether the statement is true independently of the values of the terms. And, substitution allows one to derive restrictions on the possible values, or show what conditions the statement holds under. For example, taking the statement , if  is substituted with , this implies , which is false, which implies that if  then  cannot be .
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+Isaac Newton's rotating bucket argument (also known as Newton's bucket) is a thought experiment that was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.  It is one of five arguments from the ""properties, causes, and effects"" of ""true motion and rest"" that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by ""absolute rotation"", and do not pretend to address the question of ""rotation relative to what?"" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime.",0.6666666666666666,local,identify the correct statement: what is the definition of an improper rotation?,4266374843
+269,Select the most accurate option: What is the proper distance for a redshift of 8.2? from the following choices.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+James W. Brault, a graduate student of Robert Dicke at Princeton University, measured the gravitational redshift of the sun using optical methods in 1962. In 2020, a team of scientists published the most accurate measurement of the solar gravitational redshift so far, made by analyzing Fe spectral lines in sunlight reflected by the Moon; their measurement of a mean global 638 ± 6 m/s lineshift is in agreement with the theoretical value of 633.1 m/s. Measuring the solar redshift is complicated by the Doppler shift caused by the motion of the Sun's surface, which is of similar magnitude as the gravitational effect.",0.45454545454545453,local,select the most accurate option: what is the proper distance for a redshift of 8.2? from the following choices.,1860414629
+270,Identify the correct statement: What is the formalism that angular momentum is associated with in rotational invariance? from the following choices.,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.
+
+Stationary-action principle 
+In classical mechanics it can be shown that the rotational invariance of action functionals implies conservation of angular momentum. The action is defined in classical physics as a functional of positions,  often represented by the use of square brackets, and the final and initial times. It assumes the following form in cartesian coordinates:where the repeated indices indicate summation over the index. If the action is invariant of an infinitesimal transformation, it can be mathematically stated as: .",0.6666666666666666,local,identify the correct statement: what is the formalism that angular momentum is associated with in rotational invariance? from the following choices.,3181293724
+271,Determine the correct option: What is a trophic level in an ecological pyramid?,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecostructure.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""",0.5714285714285714,local,determine the correct option: what is a trophic level in an ecological pyramid?,3651935429
+272,Select the most accurate option: What is the function of mammary glands in mammals? based on the given context.,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.45454545454545453,local,select the most accurate option: what is the function of mammary glands in mammals? based on the given context.,492497998
+273,What is the proper distance for a redshift of 8.2?,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+Yet the reason for the redshift remained unclear. Georges Lemaître predicted on theoretical grounds based on Einstein's equations for general relativity the redshift-distance relation, and published observational support for it, two years before the discovery of Hubble's law. Although he used the term ""velocities"" in his paper (and ""apparent radial velocities"" in the introduction), he later expressed doubt about interpreting these as real velocities. In 1931, he wrote a letter to the Dutch cosmologist Willem de Sitter expressing his opinion on the theoretical interpretation of the redshift-distance relation:",0.6,local,what is the proper distance for a redshift of 8.2?,1959108811
+274,Pick the best possible answer: What is the reason for the formation of stars exclusively within molecular clouds?,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+UC HII regions 
+Ultra-compact HII regions are among the best tracers of high-mass star formation. The dense material surrounding UCHII regions is likely primarily molecular. Since a complete study of massive star formation necessarily involves the cloud from which the star formed, ammonia is an invaluable tool in understanding this surrounding molecular material. Since this molecular material can be spatially resolved, it is possible to constrain the heating/ionising sources, temperatures, masses, and sizes of the regions. Doppler-shifted velocity components allow for the separation of distinct regions of molecular gas that can trace outflows and hot cores originating from forming stars.
+
+The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .",0.6363636363636364,local,pick the best possible answer: what is the reason for the formation of stars exclusively within molecular clouds?,2930399338
+275,"Select the most accurate option: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? among the listed options.","MOND is a framework that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a concept that enhances the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a concept that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a framework that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a concept that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"select the most accurate option: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? among the listed options.",3319801964
+276,"Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields?","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.
+
+The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.",0.6,local,"which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields?",2606447446
+277,Pick the best possible answer: What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? based on the given context.,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,pick the best possible answer: what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? based on the given context.,1512723038
+278,Identify the correct statement: What is a light-year? carefully.,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Filters on a camera lens, or color gels over the light source(s) may be used to correct color balance. When shooting with a bluish light (high color temperature) source such as on an overcast day, in the shade, in window light, or if using tungsten film with white or blue light, a yellowish-orange filter will correct this. For shooting with daylight film (calibrated to 5600 K) under warmer (low color temperature) light sources such as sunsets, candlelight or tungsten lighting, a bluish (e.g. #80A) filter may be used. More-subtle filters are needed to correct for the difference between, say 3200 K and 3400 K tungsten lamps or to correct for the slightly blue cast of some flash tubes, which may be 6000 K.",0.6666666666666666,local,identify the correct statement: what is a light-year? carefully.,223942030
+279,Select the most accurate option: What is the result of the collapse of a cavitation bubble? based on the given context.,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a minimize in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp enhance in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+Cavitation in fluid mechanics and engineering normally is the phenomenon in which the static pressure of a liquid reduces to below the liquid's vapor pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, called ""bubbles"" or ""voids"", collapse and can generate shock waves that may damage machinery. As a concrete propeller example: The pressure on the suction side of the propeller blades can be very low and when the pressure falls to that of the vapour pressure of the working liquid, cavities filled with gas vapour can form. The process of the formation of these cavities is referred to as cavitation. If the cavities move into the regions of higher pressure (lower velocity), they will implode or collapse. These shock waves are strong when they are very close to the imploded bubble, but rapidly weaken as they propagate away from the implosion. Cavitation collapse is therefore a significant cause of wear in some engineering contexts. Collapsing voids that implode near to a hard surface cause cyclic stress through repeated implosion. This results in surface fatigue of the material, causing a type of damage also called ""cavitation damage"" or ""cavitation erosion"". The most common examples of this kind of wear are to pump impellers, and pipe bends where a sudden change in the direction of fast moving liquid occurs.",0.45454545454545453,local,select the most accurate option: what is the result of the collapse of a cavitation bubble? based on the given context.,4073158883
+280,"Pick the best possible answer: What is the ""ultraviolet catastrophe""? based on the given context.",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven concept about the distribution of electromagnetic radiation.,B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.3333333333333333,local,"pick the best possible answer: what is the ""ultraviolet catastrophe""? based on the given context.",3798814108
+281,Identify the correct statement: What is the second law of thermodynamics? based on the given context.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic structure is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated structures left to spontaneous evolution can minimize, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic framework and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"For the foundations of thermodynamics, the conceptual importance of this was emphasized by Bryan, by Carathéodory, and by Born. The reason is that calorimetry presupposes a type of temperature as already defined before the statement of the first law of thermodynamics, such as one based on empirical scales. Such a presupposition involves making the distinction between empirical temperature and absolute temperature. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis.
+
+Clausius–Duhem inequality
+The Clausius–Duhem inequality can be used to express the second law of thermodynamics for elastic-plastic materials.  This inequality is a statement concerning the irreversibility of natural processes, especially when energy dissipation is involved.
+
+The structure of chemical thermodynamics is based on the first two laws of thermodynamics.  Starting from the first and second laws of thermodynamics, four equations called the ""fundamental equations of Gibbs"" can be derived.  From these four, a multitude of equations, relating the thermodynamic properties of the thermodynamic system can be derived using relatively simple mathematics.  This outlines the mathematical framework of chemical thermodynamics.",0.5555555555555556,local,identify the correct statement: what is the second law of thermodynamics? based on the given context.,3853014259
+282,Select the most accurate option: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? carefully.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,No match found.,0.0,live_api,select the most accurate option: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? carefully.,930568101
+283,Select the most accurate option: What is the reason for the stochastic nature of all observed resistance-switching processes? based on the given context.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.06666666666666667,live_api,select the most accurate option: what is the reason for the stochastic nature of all observed resistance-switching processes? based on the given context.,869569091
+284,"Pick the best possible answer: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? among the listed options.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).",0.3684210526315789,local,"pick the best possible answer: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? among the listed options.",3106771371
+285,Identify the correct statement: What is a Hilbert space in quantum mechanics? carefully.,A complex vector space where the state of a classical mechanical framework is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical structure is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical framework is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",0.5,local,identify the correct statement: what is a hilbert space in quantum mechanics? carefully.,2860788797
+286,What is a Schwarzschild black hole?,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.
+
+The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole.",1.0,local,what is a schwarzschild black hole?,3104155061
+287,Determine the correct option: What is the reason for recycling rare metals according to the United Nations? among the listed options.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will lower in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials. The recyclability of a material depends on its ability to reacquire the properties it had in its original state. It is an alternative to ""conventional"" waste disposal that can save material and help lower greenhouse gas emissions. It can also prevent the waste of potentially useful materials and reduce the consumption of fresh raw materials, reducing energy use, air pollution (from incineration) and water pollution (from landfilling).
+Recycling is a key component of modern waste reduction and represents the third step in the ""Reduce, Reuse, and Recycle"" waste hierarchy, contributing to environmental sustainability and resource conservation. It promotes environmental sustainability by removing raw material input and redirecting waste output in the economic system. There are some ISO standards related to recycling, such as ISO 152",0.07692307692307693,live_api,determine the correct option: what is the reason for recycling rare metals according to the united nations? among the listed options.,2198851789
+288,Pick the best possible answer: Which of the following statements accurately describes the dimension of an object in a CW complex?,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+An inductive dimension may be defined inductively as follows. Consider a discrete set of points (such as a finite collection of points) to be 0-dimensional. By dragging a 0-dimensional object in some direction, one obtains a 1-dimensional object. By dragging a 1-dimensional object in a new direction, one obtains a 2-dimensional object. In general, one obtains an ()-dimensional object by dragging an -dimensional object in a new direction. The inductive dimension of a topological space may refer to the small inductive dimension or the large inductive dimension, and is based on the analogy that, in the case of metric spaces,  balls have -dimensional boundaries, permitting an inductive definition based on the dimension of the boundaries of open sets. Moreover, the boundary of a discrete set of points is the empty set, and therefore the empty set can be taken to have dimension −1. Extract of page 24",0.3076923076923077,local,pick the best possible answer: which of the following statements accurately describes the dimension of an object in a cw complex?,1654941272
+289,Pick the best possible answer: What is the main focus of cryogenic and noble liquid detectors in dark matter experiments? among the listed options.,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.",0.375,local,pick the best possible answer: what is the main focus of cryogenic and noble liquid detectors in dark matter experiments? among the listed options.,3446865885
+290,Pick the best possible answer: What was the aim of the Gravity Probe B (GP-B) mission? among the listed options.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"On the American late-night live television sketch comedy and variety show Saturday Night Live (SNL), a commercial advertisement parody is commonly shown after the host's opening monologue. Many of the parodies were produced by James Signorelli.  The industries, products, and ad formats targeted by the parodies have been wide-ranging, including fast food, beer, feminine hygiene products, toys, clothes, medications (both prescription and over-the-counter), financial institutions, automobiles, electronics, appliances, public-service announcements, infomercials, and movie & TV shows (including SNL itself).
+Many of SNL's ad parodies have been featured in prime-time clip shows over the years, including an April 1991 special hosted by Kevin Nealon and Victoria Jackson, as well as an early 1999 follow-up hosted by Will Ferrell that features his attempts to audition for a feminine hygiene commercial.  In late 2005 and in March 2009, the special was modernized, featuring commercials created sinc",0.07142857142857142,live_api,pick the best possible answer: what was the aim of the gravity probe b (gp-b) mission? among the listed options.,179971541
+291,Determine the correct option: What is the Kutta condition?,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"During the time of the first flights, Frederick W. Lanchester, Martin Kutta, and Nikolai Zhukovsky independently created theories that connected circulation of a fluid flow to lift. Kutta and Zhukovsky went on to develop a two-dimensional wing theory. Expanding upon the work of Lanchester, Ludwig Prandtl is credited with developing the mathematics behind thin-airfoil and lifting-line theories as well as work with boundary layers.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+The 1571 uses a saddle canceler when reading the data stream. A correction signal is generated when the raw data pattern on the disk consists of two consecutive zeros. With the GCR recording format a problem occurs in the read signal waveform. The worst case pattern 1001 may cause a saddle condition where a false data bit may occur. The original 1541 drives uses a one-shot to correct the condition. The 1571 uses a gate array to correct this digitally.",0.8,local,determine the correct option: what is the kutta condition?,1202262792
+292,Choose the correct answer: What is Modified Newtonian Dynamics (MOND)? based on the given context.,MOND is a framework that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's principle of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a principle that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,"Although the astrophysics community generally accepts the existence of dark matter, a minority of astrophysicists, intrigued by specific observations that are not well explained by ordinary dark matter, argue for various modifications of the standard laws of general relativity. These include modified Newtonian dynamics (MOND), tensor–vector–scalar gravity, and entropic gravity. So far none of the proposed modified gravity theories can describe every piece of observational evidence at the same time, suggesting that even if gravity has to be modified, some form of dark matter will still be required.",0.4,local,choose the correct answer: what is modified newtonian dynamics (mond)? based on the given context.,1196983722
+293,"Select the most accurate option: What is the concept of simultaneity in Einstein's book, Relativity? from the following choices.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.08333333333333333,live_api,"select the most accurate option: what is the concept of simultaneity in einstein's book, relativity? from the following choices.",2724026091
+294,What is the reason for the stochastic nature of all observed resistance-switching processes?,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"Over the years, there have been many objections to aspects of Copenhagen-type interpretations, including the discontinuous and stochastic nature of the ""observation"" or ""measurement"" process, the difficulty of defining what might count as a measuring device, and the seeming reliance upon classical physics in describing such devices. Still, including all the variations, the interpretation remains one of the most commonly taught.See, for example:
+
+In mathematics, Brownian motion is described by the Wiener process, a continuous-time stochastic process named in honor of Norbert Wiener. It is one of the best known Lévy processes (càdlàg stochastic processes with stationary independent increments) and occurs frequently in pure and applied mathematics, economics and physics.
+
+Some systems are also stochastic, either in the input parameters such as an oscillator with a random force, or in the initial conditions, or in the predicted variables as in a Stochastic differential equation. In that random events also affect the evolution of the state variables, and this includes stochastic jump processes which are not continuos, a prototype example of a stochastic dynamical system are stock prices.",0.5,local,what is the reason for the stochastic nature of all observed resistance-switching processes?,3566818730
+295,Determine the correct option: What is the significance of Baryon Acoustic Oscillations (BAOs) in the study of the universe?,"BAOs establish a preferred length scale for baryons, which can be used to detect a subtle preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130-160 Mpc.",BAOs help to determine the average temperature of the Universe by measuring the temperature of the cosmic microwave background radiation.,BAOs provide a way to measure the time it takes for a signal to reach its destination compared to the time it takes for background noise to dissipate.,BAOs can be used to make a two-dimensional map of the galaxy distribution in the Universe.,BAOs are used to measure the speed of light in the Universe.,A,"Baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe on large scales. These are predicted to arise in the Lambda-CDM model due to acoustic oscillations in the photon–baryon fluid of the early universe and can be observed in the cosmic microwave background angular power spectrum. BAOs set up a preferred length scale for baryons. As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1%) preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130–160 Mpc. This feature was predicted theoretically in the 1990s and then discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations with BAO measurements from galaxy redshift surveys provides a precise estimate of the Hubble constant and the average matter density in the Universe. The results support the Lambda-CDM model.
+
+The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping (also called collisionless damping or Silk damping). The acoustic oscillations arise because of a conflict in the photon–baryon plasma in the early universe. The pressure of the photons tends to erase anisotropies, whereas the gravitational attraction of the baryons, moving at speeds much slower than light, makes them tend to collapse to form overdensities. These two effects compete to create acoustic oscillations, which give the microwave background its characteristic peak structure. The peaks correspond, roughly, to resonances in which the photons decouple when a particular mode is at its peak amplitude.
+
+Dark energy, though speculative, solves numerous problems. Measurements of the cosmic microwave background indicate that the universe is very nearly spatially flat, and therefore according to general relativity the universe must have almost exactly the critical density of mass/energy. But the mass density of the universe can be measured from its gravitational clustering, and is found to have only about 30% of the critical density. Since theory suggests that dark energy does not cluster in the usual way it is the best explanation for the ""missing"" energy density. Dark energy also helps to explain two geometrical measures of the overall curvature of the universe, one using the frequency of gravitational lenses, and the other using the characteristic pattern of the large-scale structure--baryon acoustic oscillations--as a cosmic ruler.",0.5,local,determine the correct option: what is the significance of baryon acoustic oscillations (baos) in the study of the universe?,1645370829
+296,Determine the correct option: What is the variation between illuminance and luminance? among the listed options.,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,"Light pollution is the alteration of the natural patterns of light and dark in ecosystems, resulting from artificial lighting. In a descriptive sense, light pollution occurs when artificial light is used in a poor or excessive way, especially at night, causing negative effects in the environment and the view of the night sky. Light pollution doesn't just negatively affect human health, but also the plants and animals that live within the wide surrounding regions affected by artificial lighting. Light pollution can be understood not only as a phenomenon resulting from a specific source or kind of pollution, but also as a contributor to the wider, collective impact of various sources of pollution.
+Although this type of pollution can exist throughout the day, its effects are magnified during the night with the contrast of the sky's darkness. It has been estimated that 83% of the world's people live under light-polluted skies and that 23% of the world's land area is affected by skyglow.
+Th",0.0,live_api,determine the correct option: what is the variation between illuminance and luminance? among the listed options.,873357228
+297,Identify the correct statement: What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI? based on the given context.,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,No match found.,0.0,live_api,identify the correct statement: what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri? based on the given context.,4200677040
+298,Select the most accurate option: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,select the most accurate option: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,1403643172
+299,Pick the best possible answer: What is the definition of an improper rotation? from the following choices.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"These terms are used in contract bridge, using duplicate or rubber scoring. Some of them are also used in whist, bid whist, the obsolete game auction bridge, and other trick-taking games. This glossary supplements the Glossary of card game terms.
+
+In the following entries, boldface links are external to the glossary and plain links reference other glossary entries.",0.1111111111111111,live_api,pick the best possible answer: what is the definition of an improper rotation? from the following choices.,1597796857
+300,Which of the following is correct? What is the most popular explanation for the shower-curtain effect? from the following choices.,The pressure differential between the inside and outside of the shower,The lower in velocity resulting in an enhance in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"Following World War II, parts of Central Europe became part of the Eastern Bloc. The boundary between the two blocks was called the Iron Curtain. Austria, Switzerland and Yugoslavia remained neutral.
+
+Lord Rayleigh predicted the following effect in his classic book on sound: if the observer were moving from the (stationary) source at twice the speed of sound, a musical piece previously emitted by that source would be heard in correct tempo and pitch, but as if played backwards.
+
+In the eyes of the Catholic Church, all Orthodox Churches, Anglican, and Lutheran Churches, the baptism conferred by the Church of Jesus Christ of Latter-day Saints is invalid. An article published together with the official declaration to that effect gave reasons for that judgment, summed up in the following words: ""The Baptism of the Catholic Church and that of the Church of Jesus Christ of Latter-day Saints differ essentially, both for what concerns faith in the Father, Son and Holy Spirit, in whose name Baptism is conferred, and for what concerns the relationship to Christ who instituted it.""",0.4,local,which of the following is correct? what is the most popular explanation for the shower-curtain effect? from the following choices.,2157026100
+301,Choose the correct answer: What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI?,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,"Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate  pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to form images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy.
+MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long, confining tube, although ""open"" MRI designs mostly",0.13636363636363635,live_api,choose the correct answer: what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri?,1390821369
+302,Which of the following is correct? What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth?,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,which of the following is correct? what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth?,3522126611
+303,Choose the correct answer: What is the relationship between dielectric loss and the transparency of a material? based on the given context.,"Dielectric loss in a material can cause refraction, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can boost the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can raise the material's transparency at higher frequencies.",B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.",0.5833333333333334,local,choose the correct answer: what is the relationship between dielectric loss and the transparency of a material? based on the given context.,1178046177
+304,Determine the correct option: What is the effect generated by a spinning superconductor? based on the given context.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.3,local,determine the correct option: what is the effect generated by a spinning superconductor? based on the given context.,2693189086
+305,What is the difference between active and passive transport in cells?,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"CSF is produced by the choroid plexus in two steps. Firstly, a filtered form of plasma moves from fenestrated capillaries in the choroid plexus into an interstitial space, with movement guided by a difference in pressure between the blood in the capillaries and the interstitial fluid. This fluid then needs to pass through the epithelium cells lining the choroid plexus into the ventricles, an active process requiring the transport of sodium, potassium and chloride that draws water into CSF by creating osmotic pressure. Unlike blood passing from the capillaries into the choroid plexus, the epithelial cells lining the choroid plexus contain tight junctions between cells, which act to prevent most substances flowing freely into CSF. Cilia on the apical surfaces of the ependymal cells beat to help transport the CSF.
+
+Passive and active euthanasia
+Voluntary, non-voluntary and involuntary types can be further divided into passive or active variants. Passive euthanasia entails the withholding treatment necessary for the continuance of life. Active euthanasia entails the use of lethal substances or forces (such as administering a lethal injection), and is more controversial. While some authors consider these terms to be misleading and unhelpful, they are nonetheless commonly used. In some cases, such as the administration of increasingly necessary, but toxic doses of painkillers, there is a debate whether or not to regard the practice as active or passive.
+
+Enzymes serve a wide variety of functions inside living organisms. They are indispensable for signal transduction and cell regulation, often via kinases and phosphatases. They also generate movement, with myosin hydrolyzing adenosine triphosphate (ATP) to generate muscle contraction, and also transport cargo around the cell as part of the cytoskeleton. Other ATPases in the cell membrane are ion pumps involved in active transport. Enzymes are also involved in more exotic functions, such as luciferase generating light in fireflies. Viruses can also contain enzymes for infecting cells, such as the HIV integrase and reverse transcriptase, or for viral release from cells, like the influenza virus neuraminidase.",1.0,local,what is the difference between active and passive transport in cells?,2936971804
+306,Pick the best possible answer: What is the relationship between the Wigner function and the density matrix operator? from the following choices.,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+In case states are defined in a continuous manner, the summation is replaced by an integral over all possible states, or equivalently we can consider the expected value of the logarithm of the probability that a microstate is occupied:This definition assumes the basis states to be picked in a way that there is no information on their relative phases. In a general case the expression is:where  is a density matrix,  is a trace operator and  is a matrix logarithm. The density matrix formalism is not required if the system is in thermal equilibrium so long as the basis states are chosen to be eigenstates of the Hamiltonian. For most practical purposes it can be taken as the fundamental definition of entropy since all other formulae for  can be derived from it, but not vice versa.
+
+The relationship between the angular momentum operator and the rotation operators is the same as the relationship between Lie algebras and Lie groups in mathematics. The close relationship between angular momentum and rotations is reflected in Noether's theorem that proves that angular momentum is conserved whenever the laws of physics are rotationally invariant.",0.46153846153846156,local,pick the best possible answer: what is the relationship between the wigner function and the density matrix operator? from the following choices.,1565748849
+307,Determine the correct option: What is explicit symmetry breaking in theoretical physics?,"Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that do not respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that do not respect the symmetry, usually in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a framework by terms in its defining equations of motion that respect the symmetry, usually in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the framework.",B,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.25,local,determine the correct option: what is explicit symmetry breaking in theoretical physics?,633160920
+308,Identify the correct statement: Who was Giordano Bruno? based on the given context.,A German philosopher who supported the Keplerian framework that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic framework that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian principle that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican principle that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean framework that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""
+
+In the sixteenth century, the Italian philosopher Giordano Bruno, an early supporter of the Copernican theory that Earth and other planets orbit the Sun (heliocentrism), put forward the view that fixed stars are similar to the Sun and are likewise accompanied by planets.
+
+The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8",0.3333333333333333,local,identify the correct statement: who was giordano bruno? based on the given context.,3894737340
+309,Determine the correct option: What is water hammer? based on the given context.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing structures.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to enhance the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,determine the correct option: what is water hammer? based on the given context.,3904649293
+310,Select the most accurate option: What is the Peierls bracket in canonical quantization? carefully.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization approach.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization technique that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization approach.,C,No match found.,0.0,live_api,select the most accurate option: what is the peierls bracket in canonical quantization? carefully.,2362493961
+311,Determine the correct option: What is the effect generated by a spinning superconductor?,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"See also
+ Magnesium diboride, considered a BCS superconductor
+ Quasiparticle
+ Little–Parks effect, one of the first indications of the importance of the Cooper pairing principle.",0.2857142857142857,local,determine the correct option: what is the effect generated by a spinning superconductor?,2723586628
+312,Determine the correct option: What is spontaneous symmetry breaking? from the following choices.,"Spontaneous symmetry breaking occurs when the action of a framework has no symmetry, but the vacuum state has a symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, and the vacuum state also has the same symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a framework has no symmetry, and the vacuum state also has no symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a principle has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.",E,"The above spontaneous symmetry breaking makes the  and  bosons coalesce into two different physical bosons with different masses – the  boson, and the photon (),
+
+In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.",0.375,local,determine the correct option: what is spontaneous symmetry breaking? from the following choices.,4159845108
+313,Select the most accurate option: What was Pierre de Fermat's solution to the problem of refraction? based on the given context.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.6,local,select the most accurate option: what was pierre de fermat's solution to the problem of refraction? based on the given context.,1117530277
+314,Identify the correct statement: What is the Erlangen program? carefully.,"The Erlangen program is a procedure of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on group concept and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+The  statement is a return statement and the  statement stops the program. The  statement has six different formats: it can be used as a return statement, a break statement, a continue statement, an end marker or to leave a procedure.",0.5,local,identify the correct statement: what is the erlangen program? carefully.,193895234
+315,Select the most accurate option: What is the reason for the sun appearing slightly yellowish when viewed from Earth? from the following choices.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,No match found.,0.0,live_api,select the most accurate option: what is the reason for the sun appearing slightly yellowish when viewed from earth? from the following choices.,2391396917
+316,What is the reason for the sun appearing slightly yellowish when viewed from Earth?,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,"An equinox is equivalently defined as the time when the plane of Earth's equator passes through the geometric center of the Sun's disk. This is also the moment when Earth's rotation axis is directly perpendicular to the Sun-Earth line, tilting neither toward nor away from the Sun. In modern times, since the Moon (and to a lesser extent the planets) causes Earth's orbit to vary slightly from a perfect ellipse, the equinox is officially defined by the Sun's more regular ecliptic longitude rather than by its declination. The instants of the equinoxes are currently defined to be when the apparent geocentric longitude of the Sun is 0° and 180°.
+
+In terms of Earth's rotation, the average day length is about 360.9856°. A day lasts for more than 360° of rotation because of the Earth's revolution around the Sun.  With a full year being slightly more than 360 days, the Earth's daily orbit around the Sun is slightly less than 1°, so the day is slightly less than 361° of rotation.
+
+During a solar eclipse, the Moon can sometimes perfectly cover the Sun because its apparent size is nearly the same as the Sun's when viewed from the Earth. A total solar eclipse is in fact an occultation while an annular solar eclipse is a transit.",0.625,local,what is the reason for the sun appearing slightly yellowish when viewed from earth?,1203639847
+317,Pick the best possible answer: What is the metallicity of Kapteyn's star estimated to be? from the following choices.,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.",0.3333333333333333,local,pick the best possible answer: what is the metallicity of kapteyn's star estimated to be? from the following choices.,2537335074
+318,Determine the correct option: How many crystallographic point groups are there in three-dimensional space? from the following choices.,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.",0.3076923076923077,local,determine the correct option: how many crystallographic point groups are there in three-dimensional space? from the following choices.,1387769834
+319,What is the Minkowski diagram used for?,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"In mathematical terminology, the operations of Minkowski summation and of forming convex hulls are commuting operations.Theorem 3 (pages 562–563): For the commutativity of Minkowski addition and convexification, see Theorem 1.1.2 (pages 2–3) in Schneider; this reference discusses much of the literature on the convex hulls of Minkowski sumsets in its ""Chapter 3 Minkowski addition"" (pages 126–196):
+
+Let  be subsets of a real vector-space, the convex hull of their Minkowski sum is the Minkowski sum of their convex hulls
+
+Glasses' Abbe numbers, along with their mean refractive indices, are used in the calculation of the required refractive powers of the elements of achromatic lenses in order to cancel chromatic aberration to first order. These two parameters, which enter into the equations for the design of achromatic doublets, are exactly what is plotted on an Abbe diagram.",1.0,local,what is the minkowski diagram used for?,54638333
+320,What is a light-year?,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"The CIE color rendering index (CRI) is a method to determine how well a light source's illumination of eight sample patches compares to the illumination provided by a reference source. Cited together, the CRI and CCT give a numerical estimate of what reference (ideal) light source best approximates a particular artificial light, and what the difference is.
+
+Another question is what percentage of civilizations in the galaxy are close enough for us to detect, assuming that they send out signals. For example, existing Earth radio telescopes could only detect Earth radio transmissions from roughly a light year away.
+
+In 1800, William Herschel discovered infrared radiation. He was studying the temperature of different colours by moving a thermometer through light split by a prism. He noticed that the highest temperature was beyond red. He theorized that this temperature change was due to ""calorific rays"", a type of light ray that could not be seen. The next year, Johann Ritter, working at the other end of the spectrum, noticed what he called ""chemical rays"" (invisible light rays that induced certain chemical reactions). These behaved similarly to visible violet light rays, but were beyond them in the spectrum. They were later renamed ultraviolet radiation.",1.0,local,what is a light-year?,133764370
+321,Pick the best possible answer: What is a regular polytope?,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.
+
+The cube is a Hanner polytope, because it can be constructed by using the Cartesian product of three line segments. Its dual polyhedron, the regular octahedron, is constructed by the direct sum of three line segments.
+
+In general, the facets of a polytope's dual will be the topological duals of the polytope's vertex figures. For the polar reciprocals of the regular and uniform polytopes, the dual facets will be polar reciprocals of the original's vertex figure. For example, in four dimensions, the vertex figure of the 600-cell is the icosahedron;  the dual of the 600-cell is the 120-cell, whose facets are dodecahedra, which are the dual of the icosahedron.",0.3333333333333333,local,pick the best possible answer: what is a regular polytope?,1838588160
+322,"Choose the correct answer: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? carefully.","MOND is a principle that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a principle that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a framework that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"choose the correct answer: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? carefully.",403733116
+323,Determine the correct option: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? based on the given context.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's concept of general relativity.",C,No match found.,0.0,live_api,determine the correct option: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? based on the given context.,2090598853
+324,"Select the most accurate option: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? carefully.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"Lidar (, an acronym of light detection and ranging or laser imaging, detection, and ranging, often stylized LiDAR) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed direction (e.g., vertical) or it may scan directions, in a special combination of 3D scanning and laser scanning.
+
+Lidar has terrestrial, airborne, and mobile uses. It is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swathe mapping (ALSM), and laser altimetry. It is used to make digital 3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has also been increasingly used in control and navigation for autonomous cars and for the",0.1,live_api,"select the most accurate option: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? carefully.",3254867156
+325,"Select the most accurate option: Who proposed the concept of ""maximal acceleration""? among the listed options.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Amphetamine is a central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy; it is also used to treat binge eating disorder in the form of lisdexamfetamine. Historically, it has been used to treat nasal congestion and depression. Amphetamine is also used as an athletic performance enhancer and cognitive enhancer, and recreationally as an aphrodisiac and euphoriant. It is a prescription drug in many countries, and unauthorized possession and distribution of amphetamine are often tightly controlled due to the significant health risks associated with recreational use.
+Amphetamine was discovered as a chemical in 1887 by Lazăr Edeleanu, and then as a drug in the late 1920s. It exists as two enantiomers: levoamphetamine and dextroamphetamine. The first amphetamine pharmaceutical was Benzedrine. Pharmaceutical amphetamine is prescribed as racemic amphetamine, Adderall, dextroamphetamine, or lisdexamfetamine. Amphetami",0.0,live_api,"select the most accurate option: who proposed the concept of ""maximal acceleration""? among the listed options.",254519321
+326,What is the 'reactive Leidenfrost effect' observed in non-volatile materials?,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,"Historically, when non-reactive anodes were desired for electrolysis, graphite (called plumbago in Faraday's time) or platinum were chosen. They were found to be some of the least reactive materials for anodes. Platinum erodes very slowly compared to other materials, and graphite crumbles and can produce carbon dioxide in aqueous solutions but otherwise does not participate in the reaction.
+
+Inverse Doppler effect
+Since 1968 scientists such as Victor Veselago have speculated about the possibility of an inverse Doppler effect. The size of the Doppler shift depends on the refractive index of the medium a wave is traveling through. Some materials are capable of negative refraction, which should lead to a Doppler shift that works in a direction opposite that of a conventional Doppler shift. The first experiment that detected this effect was conducted by Nigel Seddon and Trevor Bearpark in Bristol, United Kingdom in 2003. Later, the inverse Doppler effect was observed in some inhomogeneous materials, and predicted inside a Vavilov–Cherenkov cone.
+
+The term semi-volatile is also used to describe semi-volatile behavior constructed from other memory types, such as nvSRAM, which combines SRAM and a non-volatile memory on the same chip, where an external signal copies data from the volatile memory to the non-volatile memory, but if power is removed before the copy occurs, the data is lost. Another example is battery-backed RAM, which uses an external battery to power the memory device in case of external power loss. If power is off for an extended period of time, the battery may run out, resulting in data loss.",0.8571428571428571,local,what is the 'reactive leidenfrost effect' observed in non-volatile materials?,2006691749
+327,Determine the correct option: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter?,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's framework of general relativity.",C,No match found.,0.0,live_api,determine the correct option: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter?,3519207012
+328,Which of the following is correct? What is the piezoelectric strain coefficient for AT-cut quartz crystals?,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"The piezoelectric properties of crystalline quartz were discovered by Jacques and Pierre Curie in 1880. The first crystal oscillator was invented in 1917 by Alexander M. Nicolson, after which the first quartz crystal oscillator was built by Walter G. Cady in 1921. In 1927 the first quartz clock was built by Warren Marrison and J.W. Horton at Bell Telephone Laboratories in Canada. The following decades saw the development of quartz clocks as precision time measurement devices in laboratory settings—the bulky and delicate counting electronics, built with vacuum tubes at the time, limited their practical use elsewhere. The National Bureau of Standards (now NIST) based the time standard of the United States on quartz clocks from late 1929 until the 1960s, when it changed to atomic clocks. In 1969, Seiko produced the world's first quartz wristwatch, the Astron. Their inherent accuracy and low cost of production resulted in the subsequent proliferation of quartz clocks and watches.",0.4444444444444444,local,which of the following is correct? what is the piezoelectric strain coefficient for at-cut quartz crystals?,704222317
+329,Which of the following is correct? What is the Ozma Problem? from the following choices.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"One open problem in real algebraic geometry is the following part of Hilbert's sixteenth problem: Decide which respective positions are possible for the ovals of a nonsingular plane curve of degree 8.
+
+An example of a decision problem is the following. The input is an arbitrary graph. The problem consists in deciding whether the given graph is connected or not. The formal language associated with this decision problem is then the set of all connected graphs—to obtain a precise definition of this language, one has to decide how graphs are encoded as binary strings.
+
+In the case of distributed algorithms, computational problems are typically related to graphs. Often the graph that describes the structure of the computer network is the problem instance. This is illustrated in the following example.TULSIRAMJI GAIKWAD-PATIL College of Engineering & Technology,",0.5,local,which of the following is correct? what is the ozma problem? from the following choices.,784769045
+330,Pick the best possible answer: What is the function of the fibrous cardiac skeleton?,The fibrous cardiac skeleton is a framework of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+An echocardiogram can, within certain limits, produce an accurate assessment of the direction of blood flow and the velocity of blood and cardiac tissue at any arbitrary point using the Doppler effect. One of the limitations is that the ultrasound beam should be as parallel to the blood flow as possible. Velocity measurements allow assessment of cardiac valve areas and function, abnormal communications between the left and right side of the heart, leaking of blood through the valves (valvular regurgitation), and calculation of the cardiac output. Contrast-enhanced ultrasound using gas-filled microbubble contrast media can be used to improve velocity or other flow-related medical measurements.
+
+In differential equations, the function  is often used to simplify solutions, even if the final answer is a real function involving sine and cosine. The reason for this is that the exponential function is the eigenfunction of the operation of differentiation.",0.625,local,pick the best possible answer: what is the function of the fibrous cardiac skeleton?,2029473157
+331,Choose the correct answer: Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? from the following choices.,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+The simplest descriptions of diffraction are those in which the situation can be reduced to a two-dimensional problem. For water waves, this is already the case; water waves propagate only on the surface of the water. For light, we can often neglect one direction if the diffracting object extends in that direction over a distance far greater than the wavelength. In the case of light shining through small circular holes, we have to take into account the full three-dimensional nature of the problem.",0.5263157894736842,local,choose the correct answer: which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? from the following choices.,2829317375
+332,"Identify the correct statement: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? carefully.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"Well-being is a multifaceted topic studied in psychology, especially positive psychology. Biologically, well-being is highly influenced by endogenous molecules that impact happiness and euphoria in organisms, often referred to as ""well-being related markers"". Related concepts are eudaimonia, happiness, flourishing, quality of life, contentment, and meaningful life.",0.0,live_api,"identify the correct statement: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? carefully.",326542890
+333,Select the most accurate option: What is the contrast between active and passive transport in cells? from the following choices.,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"CSF is produced by the choroid plexus in two steps. Firstly, a filtered form of plasma moves from fenestrated capillaries in the choroid plexus into an interstitial space, with movement guided by a difference in pressure between the blood in the capillaries and the interstitial fluid. This fluid then needs to pass through the epithelium cells lining the choroid plexus into the ventricles, an active process requiring the transport of sodium, potassium and chloride that draws water into CSF by creating osmotic pressure. Unlike blood passing from the capillaries into the choroid plexus, the epithelial cells lining the choroid plexus contain tight junctions between cells, which act to prevent most substances flowing freely into CSF. Cilia on the apical surfaces of the ependymal cells beat to help transport the CSF.",0.4166666666666667,local,select the most accurate option: what is the contrast between active and passive transport in cells? from the following choices.,2028617600
+334,Select the most accurate option: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? from the following choices.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,No match found.,0.0,live_api,select the most accurate option: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? from the following choices.,2306789843
+335,Determine the correct option: Which of the following statements accurately describes the origin and significance of the triskeles symbol?,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,"Ammianus' work contains a detailed description of the earthquake and tsunami of 365 in Alexandria, which devastated the metropolis and the shores of the eastern Mediterranean on 21 July 365. His report describes accurately the characteristic sequence of earthquake, retreat of the sea, and sudden incoming giant wave.
+
+When b = 0, the eigenvalues of A determine the structure of the phase space.  From the eigenvalues and the eigenvectors of A it is possible to determine if an initial point will converge or diverge to the equilibrium point at the origin.
+
+History 
+The origin of the  goes back to Gottfried Leibniz, who in the seventeenth century, after having constructed a successful mechanical calculating machine, dreamt of building a machine that could manipulate symbols in order to determine the truth values of mathematical statements. He realized that the first step would have to be a clean formal language, and much of his subsequent work was directed toward that goal. In 1928, David Hilbert and Wilhelm Ackermann posed the question in the form outlined above.",0.5,local,determine the correct option: which of the following statements accurately describes the origin and significance of the triskeles symbol?,3373201097
+336,Choose the correct answer: What is a virtual particle? among the listed options.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+The triplet deuteron nucleon is barely bound at , and none of the higher energy states are bound. The singlet deuteron is a virtual state, with a negative binding energy of . There is no such stable particle, but this virtual particle transiently exists during neutron–proton inelastic scattering, accounting for the unusually large neutron scattering cross-section of the proton.",0.5,local,choose the correct answer: what is a virtual particle? among the listed options.,1558659760
+337,Select the most accurate option: What is the SI base unit of time and how is it defined? based on the given context.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).",0.5,local,select the most accurate option: what is the si base unit of time and how is it defined? based on the given context.,2706567736
+338,Identify the correct statement: What is a virtual particle? based on the given context.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+When a pair of virtual particles (such as an electron and positron) is created in the vicinity of the event horizon, random spatial positioning might result in one of them to appear on the exterior; this process is called quantum tunnelling. The gravitational potential of the black hole can then supply the energy that transforms this virtual particle into a real particle, allowing it to radiate away into space. In exchange, the other member of the pair is given negative energy, which results in a net loss of mass–energy by the black hole. The rate of Hawking radiation increases with decreasing mass, eventually causing the black hole to evaporate away until, finally, it explodes.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.875,local,identify the correct statement: what is a virtual particle? based on the given context.,170399638
+339,Which of the following is correct? What was Pierre de Fermat's solution to the problem of refraction? from the following choices.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Pierre de Fermat also pioneered the development of analytic geometry. Although not published in his lifetime, a manuscript form of Ad locos planos et solidos isagoge (Introduction to Plane and Solid Loci) was circulating in Paris in 1637, just prior to the publication of Descartes' Discourse.Pierre de Fermat, Varia Opera Mathematica d. Petri de Fermat, Senatoris Tolosani (Toulouse, France:  Jean Pech, 1679), ""Ad locos planos et solidos isagoge,"" pp. 91–103. ""Eloge de Monsieur de Fermat""  (Eulogy of Mr. de Fermat), Le Journal des Scavans, 9 February 1665, pp. 69–72.  From p. 70:  ""Une introduction aux lieux, plans & solides; qui est un traité analytique concernant la solution des problemes plans & solides, qui avoit esté veu devant que M. des Cartes eut rien publié sur ce sujet.""  (An introduction to loci, plane and solid; which is an analytical treatise concerning the solution of plane and solid problems, which was seen before Mr. des Cartes had published anything on this subject.) Clearly written and well received, the Introduction also laid the groundwork for analytical geometry. The key difference between Fermat's and Descartes' treatments is a matter of viewpoint: Fermat always started with an algebraic equation and then described the geometric curve that satisfied it, whereas Descartes started with geometric curves and produced their equations as one of several properties of the curves. As a consequence of this approach, Descartes had to deal with more complicated equations and he had to develop the methods to work with polynomial equations of higher degree. It was Leonhard Euler who first applied the coordinate method in a systematic study of space curves and surfaces.",0.75,local,which of the following is correct? what was pierre de fermat's solution to the problem of refraction? from the following choices.,2194159809
+340,Determine the correct option: What is the explanation for the effective supersymmetry in quark-diquark models? based on the given context.,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,determine the correct option: what is the explanation for the effective supersymmetry in quark-diquark models? based on the given context.,4279763735
+341,Pick the best possible answer: What is the proper distance for a redshift of 8.2? from the following choices.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Sheol
+Sheol, in the Hebrew Bible, is a place of darkness (Job 10:21–22) to which all the dead go—both the righteous and the unrighteous—regardless of the moral choices made in life (Genesis 35:37; Book of Ezekiel 32; Isaiah 16; Job 30:23), a place of stillness (Psalm 88:13, 94:17; Ecclesiastes 9:10), at the longest possible distance from Heaven (Job 11:8; Amos 9:2; Psalm 139:8).
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.6363636363636364,local,pick the best possible answer: what is the proper distance for a redshift of 8.2? from the following choices.,691136158
+342,Pick the best possible answer: What is linear frame dragging? among the listed options.,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"A recumbent bicycle is a bicycle that places the rider in a laid-back reclining position, and often called a human-powered vehicle or HPV, especially if it has an aerodynamic fairing. Recumbents are available in a wide range of configurations, including: long to short wheelbase; large, small, or a mix of wheel sizes; overseat, underseat, or no-hands steering; and rear wheel or front wheel drive. A variant with three wheels is a recumbent tricycle, with four wheels a quadracycle.
+Speed recumbents are generally faster than upright bicycles, but they were banned by the Union Cycliste Internationale (UCI) in 1934. Recumbent races and records are now overseen by the World Human Powered Vehicle Association (WHPVA), International Human Powered Vehicle Association (IHPVA) and World Recumbent Racing Association (WRRA).
+Some recumbent riders may choose this type of design for ergonomic reasons: the rider's weight is distributed comfortably over a larger area, supported by back and buttocks. On a",0.0,live_api,pick the best possible answer: what is linear frame dragging? among the listed options.,3676746303
+343,Pick the best possible answer: What is the main sequence in astronomy? among the listed options.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar structure.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"Elite League (Korean: 대학 전쟁) is a South Korean reality game show where students from prestigious universities in South Korea and abroad battle to solve brain quizzes. The first season premiered on November 3, 2023 on Coupang Play. The second season premiered on November 15, 2024 on Coupang Play. The third season premiered on December 12, 2025.",0.0,live_api,pick the best possible answer: what is the main sequence in astronomy? among the listed options.,151016449
+344,Pick the best possible answer: What is the reason for the stochastic nature of all observed resistance-switching processes? from the following choices.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,No match found.,0.0,live_api,pick the best possible answer: what is the reason for the stochastic nature of all observed resistance-switching processes? from the following choices.,1702626661
+345,Determine the correct option: What is the Einstein@Home project?,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"21st century 
+Since 2000, the Einstein Papers Project has been located at Caltech. The project was established in 1986 to assemble, preserve, translate, and publish papers selected from the literary estate of Albert Einstein and from other collections.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Criticism
+Incompleteness and indeterminism
+Einstein was an early and persistent supporter of objective reality. Bohr and Heisenberg advanced the position that no physical property could be understood without an act of measurement, while Einstein refused to accept this. Abraham Pais recalled a walk with Einstein when the two discussed quantum mechanics: ""Einstein suddenly stopped, turned to me and asked whether I really believed that the moon exists only when I look at it."" While Einstein did not doubt that quantum mechanics was a correct physical theory in that it gave correct predictions, he maintained that it could not be a complete theory. The most famous product of his efforts to argue the incompleteness of quantum theory is the Einstein–Podolsky–Rosen thought experiment, which was intended to show that physical properties like position and momentum have values even if not measured. The argument of EPR was not generally persuasive to other physicists.",0.6666666666666666,local,determine the correct option: what is the einstein@home project?,3785407160
+346,Determine the correct option: What is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.4166666666666667,local,determine the correct option: what is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,720583426
+347,Pick the best possible answer: What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? carefully.,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.4,local,pick the best possible answer: what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? carefully.,3955299652
+348,Choose the correct answer: What is the spin quantum number? from the following choices.,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+Whatever axis their spins are measured along, they are always found to be opposite. In quantum mechanics, the x-spin and z-spin are ""incompatible observables"", meaning the Heisenberg uncertainty principle applies to alternating measurements of them: a quantum state cannot possess a definite value for both of these variables. Suppose Alice measures the z-spin and obtains +z, so that the quantum state collapses into state I. Now, instead of measuring the z-spin as well, Bob measures the x-spin. According to quantum mechanics, when the system is in state I, Bob's x-spin measurement will have a 50% probability of producing +x and a 50% probability of -x. It is impossible to predict which outcome will appear until Bob actually performs the measurement. Therefore, Bob's positron will have a definite spin when measured along the same axis as Alice's electron, but when measured in the perpendicular axis its spin will be uniformly random. It seems as if information has propagated (faster than light) from Alice's apparatus to make Bob's positron assume a definite spin in the appropriate axis.",0.5,local,choose the correct answer: what is the spin quantum number? from the following choices.,2555979632
+349,Select the most accurate option: Which of the following statements accurately describes the dimension of an object in a CW complex? from the following choices.,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+The dimension is an intrinsic property of an object, in the sense that it is independent of the dimension of the space in which the object is or can be embedded. For example, a curve, such as a circle, is of dimension one, because the position of a point on a curve is determined by its signed distance along the curve to a fixed point on the curve. This is independent from the fact that a curve cannot be embedded in a Euclidean space of dimension lower than two, unless it is a line. Similarly, a surface is of dimension two, even if embedded in three-dimensional space.",0.2857142857142857,local,select the most accurate option: which of the following statements accurately describes the dimension of an object in a cw complex? from the following choices.,1361005889
+350,What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth?,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth?,1081949536
+351,Identify the correct statement: What is a uniform tiling in the hyperbolic plane? based on the given context.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+All regular polygons, {a}.
+ Regular tetrahedron: {3,3}
+ In general, all regular n-simplexes, {3,3,...,3}
+ The regular 24-cell in 4 dimensions, {3,4,3}.
+ The great 120-cell {5,5/2,5} and the grand stellated 120-cell {5/2,5,5/2}
+The self-dual (infinite) regular Euclidean honeycombs are:
+ Apeirogon: {∞}
+ Square tiling: {4,4}
+ Cubic honeycomb: {4,3,4}
+ In general, all regular n-dimensional Euclidean hypercubic honeycombs: {4,3,...,3,4}.
+The self-dual (infinite) regular hyperbolic honeycombs are:
+ Compact hyperbolic tilings: {5,5}, {6,6}, ... {p,p}.
+ Paracompact hyperbolic tiling: {∞,∞}
+ Compact hyperbolic honeycombs: {3,5,3}, {5,3,5}, and {5,3,3,5}
+ Paracompact hyperbolic honeycombs: {3,6,3}, {6,3,6}, {4,4,4}, and {3,3,4,3,3}
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.7,local,identify the correct statement: what is a uniform tiling in the hyperbolic plane? based on the given context.,1557455689
+352,Choose the correct answer: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.",0.2857142857142857,local,choose the correct answer: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,4061823486
+353,Identify the correct statement: What is the relationship between interstellar and cometary chemistry? based on the given context.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.45454545454545453,local,identify the correct statement: what is the relationship between interstellar and cometary chemistry? based on the given context.,2615815424
+354,Pick the best possible answer: What is the most popular explanation for the shower-curtain effect? among the listed options.,The pressure differential between the inside and outside of the shower,The reduce in velocity resulting in an boost in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,pick the best possible answer: what is the most popular explanation for the shower-curtain effect? among the listed options.,778132947
+355,Select the most accurate option: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? from the following choices.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+Although supermassive black holes are expected to be found in most AGN, only some galaxies' nuclei have been more carefully studied in attempts to both identify and measure the actual masses of the central supermassive black hole candidates. Some of the most notable galaxies with supermassive black hole candidates include the Andromeda Galaxy, Messier 32, Messier 87, the Sombrero Galaxy, and the Milky Way itself.",0.6,local,select the most accurate option: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? from the following choices.,2119808207
+356,Identify the correct statement: What is the gravitomagnetic interaction? carefully.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general principle of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Historically a barrister might use the honorific, Esquire. Even though the term barrister-at-law is sometimes seen, and was once very common, it has never been formally correct in England and Wales. Barrister is the only correct nomenclature.This was confirmed by the Professional Conduct Committee of the Bar Council when it changed its rules on the usage of the description by individuals in 1970, Annual Statement of the Bar Council, 1969/70.",0.5,local,identify the correct statement: what is the gravitomagnetic interaction? carefully.,3819591538
+357,Choose the correct answer: What is the Minkowski diagram used for? based on the given context.,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.3333333333333333,local,choose the correct answer: what is the minkowski diagram used for? based on the given context.,1414960866
+358,Which of the following is correct? What is the Optical Signal-to-Noise Ratio (OSNR)? from the following choices.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in mechanisms where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in frameworks where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.5555555555555556,local,which of the following is correct? what is the optical signal-to-noise ratio (osnr)? from the following choices.,3247296742
+359,Choose the correct answer: What is the SI unit of the physical quantity m/Q? carefully.,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.5,local,choose the correct answer: what is the si unit of the physical quantity m/q? carefully.,1251405850
+360,"Select the most accurate option: What is the meaning of the term ""horror vacui""? from the following choices.",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate mechanism.,The spatial-corporeal component of Descartes' metaphysics.,B,"This article lists direct English translations of common Latin phrases. Some of the phrases are themselves translations of Greek phrases.
+This list is a combination of the twenty page-by-page ""List of Latin phrases"" articles:",0.0,live_api,"select the most accurate option: what is the meaning of the term ""horror vacui""? from the following choices.",3926481844
+361,Identify the correct statement: What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation? carefully.,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"A quantum computer is a real or theoretical computer that exploits quantum phenomena like superposition and entanglement in an essential way. It is widely believed that a quantum computer could perform some calculations exponentially faster than any classical computer. For example, a large-scale quantum computer could break some widely used encryption schemes and aid physicists in performing physical simulations. However, current hardware implementations of quantum computation are largely experimental and only suitable for specialized tasks.
+The basic unit of information in quantum computing, the qubit (or ""quantum bit""), serves the same function as the bit in ordinary or ""classical"" computing. However, unlike a classical bit, which can be in one of two states (a binary), a qubit can exist in a linear combination of two states known as a quantum superposition. The result of measuring a qubit is one of the two states given by a probabilistic rule. If a quantum computer manipulates the q",0.0,live_api,identify the correct statement: what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation? carefully.,3780930343
+362,Determine the correct option: Which of the following statements accurately describes the dimension of an object in a CW complex?,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+An inductive dimension may be defined inductively as follows. Consider a discrete set of points (such as a finite collection of points) to be 0-dimensional. By dragging a 0-dimensional object in some direction, one obtains a 1-dimensional object. By dragging a 1-dimensional object in a new direction, one obtains a 2-dimensional object. In general, one obtains an ()-dimensional object by dragging an -dimensional object in a new direction. The inductive dimension of a topological space may refer to the small inductive dimension or the large inductive dimension, and is based on the analogy that, in the case of metric spaces,  balls have -dimensional boundaries, permitting an inductive definition based on the dimension of the boundaries of open sets. Moreover, the boundary of a discrete set of points is the empty set, and therefore the empty set can be taken to have dimension −1. Extract of page 24",0.3333333333333333,local,determine the correct option: which of the following statements accurately describes the dimension of an object in a cw complex?,1534932085
+363,Which of the following is correct? What is the relationship between chemical potential and quarks/antiquarks? among the listed options.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a framework. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a framework. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a structure. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a structure. Higher μ indicates a higher density of quarks.",A,"where the n is the number of up and down quarks and antiquarks.
+
+where
+  is the number of constituent quarks, and
+  is the number of constituent antiquarks.
+
+The name ""baryon"", introduced by Abraham Pais, ""... it seems practical to have a collective name for these particles and other which possibly may still be discovered and which may also have to be taken along in the conservation principle just mentioned. It is proposed to use the fitting name 'baryon' for this purpose."" comes from the Greek word for ""heavy"" (βαρύς, barýs), because, at the time of their naming, most known elementary particles had lower masses than the baryons. Each baryon has a corresponding antiparticle (antibaryon) where their corresponding antiquarks replace quarks. For example, a proton is made of two up quarks and one down quark; and its corresponding antiparticle, the antiproton, is made of two up antiquarks and one down antiquark.",0.25,local,which of the following is correct? what is the relationship between chemical potential and quarks/antiquarks? among the listed options.,1594110971
+364,Which of the following is correct? What is the reason for the sun appearing slightly yellowish when viewed from Earth? based on the given context.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,"An equinox is equivalently defined as the time when the plane of Earth's equator passes through the geometric center of the Sun's disk. This is also the moment when Earth's rotation axis is directly perpendicular to the Sun-Earth line, tilting neither toward nor away from the Sun. In modern times, since the Moon (and to a lesser extent the planets) causes Earth's orbit to vary slightly from a perfect ellipse, the equinox is officially defined by the Sun's more regular ecliptic longitude rather than by its declination. The instants of the equinoxes are currently defined to be when the apparent geocentric longitude of the Sun is 0° and 180°.
+
+Because Earth takes one year to orbit the Sun, the apparent position of the Sun takes one year to make a complete circuit of the ecliptic. With slightly more than 365 days in one year, the Sun moves a little less than 1° eastward every day. This small difference in the Sun's position against the stars causes any particular spot on Earth's surface to catch up with (and stand directly north or south of) the Sun about four minutes later each day than it would if Earth did not orbit; a day on Earth is therefore 24 hours long rather than the approximately 23-hour 56-minute sidereal day. Again, this is a simplification, based on a hypothetical Earth that orbits at a uniform angular speed around the Sun. The actual speed with which Earth orbits the Sun varies slightly during the year, so the speed with which the Sun seems to move along the ecliptic also varies. For example, the Sun is north of the celestial equator for about 185 days of each year, and south of it for about 180 days.Astronomical Almanac 2010, sec. C The variation of orbital speed accounts for part of the equation of time.Explanatory Supplement (1992), sec. 1.233
+
+Solar annual aberration
+A special case of annual aberration is the nearly constant deflection of the Sun from its position in the Sun's rest frame by  towards the west (as viewed from Earth), opposite to the apparent motion of the Sun along the ecliptic (which is from west to east, as seen from Earth). The deflection thus makes the Sun appear to be behind (or retarded) from its rest-frame position on the ecliptic by a position or angle .",0.5,local,which of the following is correct? what is the reason for the sun appearing slightly yellowish when viewed from earth? based on the given context.,263707427
+365,Which of the following statements accurately describes the dimension of an object in a CW complex?,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+An inductive dimension may be defined inductively as follows. Consider a discrete set of points (such as a finite collection of points) to be 0-dimensional. By dragging a 0-dimensional object in some direction, one obtains a 1-dimensional object. By dragging a 1-dimensional object in a new direction, one obtains a 2-dimensional object. In general, one obtains an ()-dimensional object by dragging an -dimensional object in a new direction. The inductive dimension of a topological space may refer to the small inductive dimension or the large inductive dimension, and is based on the analogy that, in the case of metric spaces,  balls have -dimensional boundaries, permitting an inductive definition based on the dimension of the boundaries of open sets. Moreover, the boundary of a discrete set of points is the empty set, and therefore the empty set can be taken to have dimension −1. Extract of page 24",0.4444444444444444,local,which of the following statements accurately describes the dimension of an object in a cw complex?,3131774629
+366,Select the most accurate option: What is Minkowski space?,Minkowski space is a physical space where objects move in a straight line unless acted upon by a force.,Minkowski space is a mathematical model that combines inertial space and time manifolds with a non-inertial reference frame of space and time into a four-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a two-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a three-dimensional model relating a position to the field.,Minkowski space is a physical space where objects move in a curved line unless acted upon by a force.,B,"Let  be subsets of a real vector-space, the convex hull of their Minkowski sum is the Minkowski sum of their convex hulls
+
+A fundamental example of such a space is the Minkowski space, which is the space-time of Einstein's special relativity. It is a four-dimensional space, where the metric is defined by the quadratic form
+
+in algebraic terminology,  is the identity element of Minkowski addition (on the collection of non-empty sets).The empty set is important in Minkowski addition, because the empty set annihilates every other subset: For every subset  of a vector space, its sum with the empty set is empty: .",0.3333333333333333,local,select the most accurate option: what is minkowski space?,1914587943
+367,What is the Droste effect?,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"All the early models, developed in the middle of the 20th century, are linear transmission models. Lasswell's model, for example, is based on five fundamental questions: ""Who?"", ""Says what?"", ""In which channel?"", ""To whom?"", and ""With what effect?"". The goal of these questions is to identify the basic components involved in the communicative process: the sender, the message, the channel, the receiver, and the effect. Lasswell's model was initially only conceived as a model of mass communication, but it has been applied to other fields as well. Some communication theorists, like Richard Braddock, have expanded it by including additional questions, like ""Under what circumstances?"" and ""For what purpose?"".
+
+Think what must have been the effect of the intense Hinduizing of three such men as Babbage, De Morgan, and George Boole on the mathematical atmosphere of 1830–65. What share had it in generating the Vector Analysis and the mathematics by which investigations in physical science are now conducted?
+
+Magically, the hurricane bypasses Mahagonny, and the people sing in awe of their miraculous rescue. This confirms Begbick's belief in the philosophy of ""Do what you want,"" and she proceeds to put it into effect.",0.5,local,what is the droste effect?,2168094601
+368,Which of the following is correct? What is the main focus of cryogenic and noble liquid detectors in dark matter experiments?,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.
+
+Scientific research
+Liquid argon is used as the target for neutrino experiments and direct dark matter searches. The interaction between the hypothetical WIMPs and an argon nucleus produces scintillation light that is detected by photomultiplier tubes. Two-phase detectors containing argon gas are used to detect the ionized electrons produced during the WIMP–nucleus scattering. As with most other liquefied noble gases, argon has a high scintillation light yield (about 51 photons/keV), is transparent to its own scintillation light, and is relatively easy to purify. Compared to xenon, argon is cheaper and has a distinct scintillation time profile, which allows the separation of electronic recoils from nuclear recoils. On the other hand, its intrinsic beta-ray background is larger due to  contamination, unless one uses argon from underground sources, which has much less  contamination. Most of the argon in Earth's atmosphere was produced by electron capture of long-lived  ( + e− →  + ν) present in natural potassium within Earth. The  activity in the atmosphere is maintained by cosmogenic production through the knockout reaction (n,2n) and similar reactions. The half-life of  is only 269 years. As a result, the underground Ar, shielded by rock and water, has much less  contamination. Dark-matter detectors currently operating with liquid argon include DarkSide, WArP, ArDM, microCLEAN and DEAP. Neutrino experiments include ICARUS and MicroBooNE, both of which use high-purity liquid argon in a time projection chamber for fine grained three-dimensional imaging of neutrino interactions.
+
+WIMP searches mostly use either cryogenic or noble liquid detector technologies. Cryogenic detectors, operating at temperatures below 100 mK, detect the heat produced when a particle hits an atom in a crystal absorber such as germanium. Experiments using this technology include SuperCDMS and EDELWEISS.",0.6666666666666666,local,which of the following is correct? what is the main focus of cryogenic and noble liquid detectors in dark matter experiments?,3791273241
+369,Select the most accurate option: What is the interstellar medium (ISM)? among the listed options.,"The matter and radiation that exist in the space between the star frameworks in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar structure, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.",0.3,local,select the most accurate option: what is the interstellar medium (ism)? among the listed options.,3473342311
+370,Pick the best possible answer: What is the mechanism of FTIR? carefully.,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"A special type of integrator, used at a point where only moderate accuracy was needed, was based on a steel ball, instead of a disc. It had two inputs, one to rotate the ball, and the other to define the angle of the ball's rotating axis. That axis was always in a plane that contained the axes of two movement pick-off rollers, quite similar to the mechanism of a rolling-ball computer mouse (in that mechanism, the pick-off rollers were roughly the same diameter as the ball). The pick-off roller axes were at right angles.
+
+Because its mechanism is primitive compared to most modern woodwinds, makers have occasionally attempted to ""reinvent"" the bassoon. In the 1960s, Giles Brindley began to develop what he called the ""logical bassoon"", which aimed to improve intonation and evenness of tone through use of an electrically activated mechanism, making possible key combinations too complex for the human hand to manage. Brindley's logical bassoon was never marketed.
+
+This branch of mathematics deals with the long-term qualitative behavior of dynamical systems. Here, the focus is not on finding precise solutions to the equations defining the dynamical system (which is often hopeless), but rather to answer questions like ""Will the system settle down to a steady state in the long term, and if so, what are the possible attractors?"" or ""Does the long-term behavior of the system depend on its initial condition?""",0.5714285714285714,local,pick the best possible answer: what is the mechanism of ftir? carefully.,586066919
+371,Which of the following is correct? What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth? among the listed options.,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,which of the following is correct? what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth? among the listed options.,2491093298
+372,Choose the correct answer: What is the Maxwell's Demon thought experiment? among the listed options.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an raise in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an raise in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an enhance in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,choose the correct answer: what is the maxwell's demon thought experiment? among the listed options.,2037564986
+373,Pick the best possible answer: Who was Giordano Bruno? from the following choices.,A German philosopher who supported the Keplerian principle that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic principle that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian concept that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican principle that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean concept that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8
+
+Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""",0.4444444444444444,local,pick the best possible answer: who was giordano bruno? from the following choices.,3394209918
+374,Identify the correct statement: How many crystallographic point groups are there in three-dimensional space? based on the given context.,7,32,14,5,27,B,"Field electron emission, also known as field-induced electron emission, field emission (FE) and electron field emission, is the emission of electrons from a material placed in an electrostatic field. The most common context is field emission from a solid surface into a vacuum. However, field emission can take place from solid or liquid surfaces, into a vacuum, a fluid (e.g. air), or any non-conducting or weakly conducting dielectric. The field-induced promotion of electrons from the valence to conduction band of semiconductors (the Zener effect) can also be regarded as a form of field emission. 
+Field emission in pure metals occurs in high electric fields: the gradients are typically higher than 1 gigavolt per metre and strongly dependent upon the work function. While electron sources based on field emission have a number of applications, field emission is most commonly an undesirable primary source of vacuum breakdown and electrical discharge phenomena, which engineers work to prevent",0.14285714285714285,live_api,identify the correct statement: how many crystallographic point groups are there in three-dimensional space? based on the given context.,3781862368
+375,"Which of the following is correct? What is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? from the following choices.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+Following a Greenpeace protest, Apple released a statement on April 17, 2012, committing to ending its use of coal and shifting to 100% renewable clean energy. By 2013, Apple was using 100% renewable energy to power their data centers. Overall, 75% of the company's power came from clean renewable sources.
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.",0.4,local,"which of the following is correct? what is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? from the following choices.",2262820372
+376,What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space?,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.6,local,what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space?,2688559864
+377,Which of the following is correct? What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? based on the given context.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.2857142857142857,local,which of the following is correct? what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? based on the given context.,2087691375
+378,What is the function of the fibrous cardiac skeleton?,The fibrous cardiac skeleton is a system of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+Clinical cardiac electrophysiology is a branch of the medical specialty of cardiology and is concerned with the study and treatment of rhythm disorders of the heart. Cardiologists with expertise in this area are usually referred to as electrophysiologists. Electrophysiologists are trained in the mechanism, function, and performance of the electrical activities of the heart. Electrophysiologists work closely with other cardiologists and cardiac surgeons to assist or guide therapy for heart rhythm disturbances (arrhythmias). They are trained to perform interventional and surgical procedures to treat cardiac arrhythmia.
+
+The causes of cardiomyopathy can be genetic, viral, or lifestyle-related. Key symptoms of cardiomyopathy include shortness of breath, fatigue, and irregular heartbeats. Understanding the specific function of cardiac muscle is crucial, as the heart muscle's main role is to pump blood throughout the body efficiently.""Comprehensive Guide to Understanding and Managing Cardiomyopathy"" by Atrius Cardiac Care",0.75,local,what is the function of the fibrous cardiac skeleton?,402139649
+379,Determine the correct option: Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect?,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.",0.5384615384615384,local,determine the correct option: who was the first to determine the velocity of a star moving away from the earth using the doppler effect?,2890963286
+380,What is the definition of an improper rotation?,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"Isaac Newton's rotating bucket argument (also known as Newton's bucket) is a thought experiment that was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.  It is one of five arguments from the ""properties, causes, and effects"" of ""true motion and rest"" that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by ""absolute rotation"", and do not pretend to address the question of ""rotation relative to what?"" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime.
+
+In order to make all of this mathematically precise, the theory must clearly define what is a Euclidean space, and the related notions of distance, angle, translation, and rotation. Even when used in physical theories, Euclidean space is an abstraction detached from actual physical locations, specific reference frames, measurement instruments, and so on. A purely mathematical definition of Euclidean space also ignores questions of units of length and other physical dimensions: the distance in a ""mathematical"" space is a number, not something expressed in inches or metres.
+
+While the use of the word 'artist' is common, there is no agreed upon definition of art—this makes the definition of who is and is not an artist indeterminate. Artists and philosophers still debate their interpretation of art's definition—on what does and does not count as art.",0.6666666666666666,local,what is the definition of an improper rotation?,4097067899
+381,Determine the correct option: What did Arthur Eddington discover about two of Einstein's types of gravitational waves? carefully.,"Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could only be made to propagate at the speed of gravity by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of sound by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could not be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of light by choosing appropriate coordinates.",C,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.0,live_api,determine the correct option: what did arthur eddington discover about two of einstein's types of gravitational waves? carefully.,3211025579
+382,Identify the correct statement: What is spontaneous symmetry breaking? carefully.,"Spontaneous symmetry breaking occurs when the action of a concept has no symmetry, but the vacuum state has a symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, and the vacuum state also has the same symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a principle has no symmetry, and the vacuum state also has no symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.",E,"The above spontaneous symmetry breaking makes the  and  bosons coalesce into two different physical bosons with different masses – the  boson, and the photon (),
+
+In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.",0.42857142857142855,local,identify the correct statement: what is spontaneous symmetry breaking? carefully.,3777818404
+383,Determine the correct option: What is the reason for heating metals to a temperature just above the upper critical temperature? based on the given context.,"To prevent the grains of solution from growing too large, which minimizes mechanical properties such as toughness, shear strength, and tensile strength.","To raise the size of the grains of solution, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too large, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too small, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To enhance the size of the grains of solution, which reduces mechanical properties such as toughness, shear strength, and tensile strength.",C,"At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of the material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with ""ceramic"" in the context of ceramic capacitors for just this reason.
+
+Color temperature in astronomy
+In astronomy, the color temperature is defined by the local slope of the SPD at a given wavelength, or, in practice, a wavelength range. Given, for example, the color magnitudes B and V which are calibrated to be equal for an A0V star (e.g. Vega), the stellar color temperature  is given by the temperature for which the color index  of a black-body radiator fits the stellar one. Besides the , other color indices can be used as well. The color temperature (as well as the correlated color temperature defined above) may differ largely from the effective temperature given by the radiative flux of the stellar surface. For example, the color temperature of an A0V star is about 15000 K compared to an effective temperature of about 9500 K.
+
+in 3D uniform space. This is equivalent to the above condition on the temperature. In a 3D harmonic potential, the critical value is instead",0.5,local,determine the correct option: what is the reason for heating metals to a temperature just above the upper critical temperature? based on the given context.,1354789724
+384,"Choose the correct answer: What is the concept of simultaneity in Einstein's book, Relativity? among the listed options.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,"choose the correct answer: what is the concept of simultaneity in einstein's book, relativity? among the listed options.",789792300
+385,Determine the correct option: What is the main focus of cryogenic and noble liquid detectors in dark matter experiments? among the listed options.,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.",0.4,local,determine the correct option: what is the main focus of cryogenic and noble liquid detectors in dark matter experiments? among the listed options.,3520274849
+386,Choose the correct answer: What is a Hilbert space in quantum mechanics? among the listed options.,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical framework is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical framework is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",0.4,local,choose the correct answer: what is a hilbert space in quantum mechanics? among the listed options.,1489941247
+387,Select the most accurate option: What is Modified Newtonian Dynamics (MOND)? from the following choices.,MOND is a principle that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's framework of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a concept that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,"Although the astrophysics community generally accepts the existence of dark matter, a minority of astrophysicists, intrigued by specific observations that are not well explained by ordinary dark matter, argue for various modifications of the standard laws of general relativity. These include modified Newtonian dynamics (MOND), tensor–vector–scalar gravity, and entropic gravity. So far none of the proposed modified gravity theories can describe every piece of observational evidence at the same time, suggesting that even if gravity has to be modified, some form of dark matter will still be required.",0.4,local,select the most accurate option: what is modified newtonian dynamics (mond)? from the following choices.,4243061978
+388,What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory?,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,"The ratio in the definition of the derivative is the slope of the line through two points on the graph of the function , specifically the points  and . As  is made smaller, these points grow closer together, and the slope of this line approaches the limiting value, the slope of the tangent to the graph of  at . In other words, the derivative is the slope of the tangent.
+
+This gives an exact value for the slope of a straight line. If the graph of the function is not a straight line, however, then the change in  divided by the change in  varies. Derivatives give an exact meaning to the notion of change in output concerning change in input. To be concrete, let  be a function, and fix a point  in the domain of .  is a point on the graph of the function. If  is a number close to zero, then  is a number close to . Therefore,  is close to . The slope between these two points is
+
+Asymptotes convey information about the behavior of curves in the large, and determining the asymptotes of a function is an important step in sketching its graph., §4.18. The study of asymptotes of functions, construed in a broad sense, forms a part of the subject of asymptotic analysis.",0.46153846153846156,local,what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory?,2648860323
+389,Determine the correct option: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? carefully.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,determine the correct option: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? carefully.,903747310
+390,Choose the correct answer: Which of the following is an accurate definition of dynamic scaling in self-similar frameworks? among the listed options.,"Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar structures, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Metacognition is an awareness of one's thought processes and an understanding of the patterns behind them. It is ""thinking about thinking"". The term comes from the root word meta, meaning ""beyond"", or ""on top of"". Metacognition can take many forms, such as reflecting on one's ways of thinking, and knowing when and how oneself and others use particular strategies for problem-solving. There are generally two components of metacognition: (1) cognitive conceptions and (2) a cognitive regulation system. Research has shown that both components of metacognition play key roles in metaconceptual knowledge and learning. Metamemory, defined as knowing about memory and mnemonic strategies, is an important aspect of metacognition.
+Writings on metacognition date back at least as far as two works by the Greek philosopher Aristotle (384–322 BC): On the Soul and the Parva Naturalia.",0.0,live_api,choose the correct answer: which of the following is an accurate definition of dynamic scaling in self-similar frameworks? among the listed options.,2741240549
+391,What is the Roche limit?,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"The orbit of Adrastea lies inside Jupiter's synchronous orbit radius (as does Metis's), and as a result, tidal forces are slowly causing its orbit to decay so that it will one day impact Jupiter. If its density is similar to Amalthea's then its orbit would actually lie within the fluid Roche limit. However, since it is not breaking up, it must still lie outside its rigid Roche limit.
+
+The second is a Grignard reaction, elaborated by Hoffman-La Roche from the original synthesis of Inhoffen et al.  They are both symmetrical; the BASF synthesis is C20 + C20, and the Hoffman-La Roche synthesis is C19 + C2 + C19.
+
+The first Roche Tower, designed by Herzog & de Meuron, is 41 floors and  high, upon its opening in 2015 it has become the tallest building in Switzerland. Roche Tower-2 was opened in 2022, has 50 floors and is Switzerland's tallest building. Basel has also Switzerland's third tallest building (Basler Messeturm, ) and Switzerland's tallest tower (St. Chrischona TV tower, ).",1.0,local,what is the roche limit?,523742569
+392,Determine the correct option: What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? among the listed options.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.3076923076923077,local,determine the correct option: what is the relationship between the cauchy momentum equation and the navier-stokes equation? among the listed options.,4016464308
+393,"Which of the following is correct? What is the meaning of the term ""horror vacui""? from the following choices.",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate mechanism.,The spatial-corporeal component of Descartes' metaphysics.,B,"Visual arts
+In the visual arts, an essay is a preliminary drawing or sketch that forms a basis for a final painting or sculpture, made as a test of the work's composition (this meaning of the term, like several of those following, comes from the word essay's meaning of ""attempt"" or ""trial"").
+
+According to several studies funded by the state of Alaska, the spill had both short-term and long-term economic effects. These included the loss of recreational sports, fisheries, reduced tourism, and an estimate of what economists call ""existence value"", which is the value to the public of a pristine Prince William Sound.1994, Victor Goldberg, The Journal of Legal Studies, Recovery for Economic Loss Following the Exxon ‘Valdez’ Oil Spill""
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.5,local,"which of the following is correct? what is the meaning of the term ""horror vacui""? from the following choices.",394905215
+394,Choose the correct answer: What is the definition of an improper rotation? from the following choices.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"where  is some set with cardinality . One can show that the generalized binomial coefficient is well-defined, in the sense that no matter what set we choose to represent the cardinal number ,  will remain the same. For finite cardinals, this definition coincides with the standard definition of the binomial coefficient.
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.5,local,choose the correct answer: what is the definition of an improper rotation? from the following choices.,992549288
+395,Determine the correct option: What is the role of methane in Fischer-Tropsch processes? from the following choices.,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,No match found.,0.0,live_api,determine the correct option: what is the role of methane in fischer-tropsch processes? from the following choices.,3681665350
+396,Choose the correct answer: What is the distinction between natural convection and forced convection? from the following choices.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,No match found.,0.0,live_api,choose the correct answer: what is the distinction between natural convection and forced convection? from the following choices.,3472609778
+397,Which of the following is correct? What is the reason for the stochastic nature of all observed resistance-switching processes?,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"Over the years, there have been many objections to aspects of Copenhagen-type interpretations, including the discontinuous and stochastic nature of the ""observation"" or ""measurement"" process, the difficulty of defining what might count as a measuring device, and the seeming reliance upon classical physics in describing such devices. Still, including all the variations, the interpretation remains one of the most commonly taught.See, for example:
+
+Some systems are also stochastic, either in the input parameters such as an oscillator with a random force, or in the initial conditions, or in the predicted variables as in a Stochastic differential equation. In that random events also affect the evolution of the state variables, and this includes stochastic jump processes which are not continuos, a prototype example of a stochastic dynamical system are stock prices.
+
+Autocorrelation of stochastic processes 
+In statistics, the autocorrelation of a real or complex random process is the Pearson correlation between values of the process at different times, as a function of the two times or of the time lag. Let  be a random process, and  be any point in time ( may be an integer for a discrete-time process or a real number for a continuous-time process). Then  is the value (or realization) produced by a given run of the process at time . Suppose that the process has mean  and variance  at time , for each . Then the definition of the autocorrelation function between times  and  isKun Il Park, Fundamentals of Probability and Stochastic Processes with Applications to Communications, Springer, 2018,",0.45454545454545453,local,which of the following is correct? what is the reason for the stochastic nature of all observed resistance-switching processes?,817602591
+398,Which of the following is correct? What is the Carnot engine? among the listed options.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is an ideal heat engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real heat engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,B,"where  is the efficiency of the real engine, and  is the efficiency of the Carnot engine working between the same two reservoirs at the temperatures  and . For the Carnot engine, the entire process is 'reversible', and Equation () is an equality. Hence, the efficiency of the real engine is always less than the ideal Carnot engine.
+
+A Carnot heat engineIn French, Carnot uses machine à feu, which Thurston translates as heat-engine or steam-engine. In a footnote, Carnot distinguishes the steam-engine (machine à vapeur) from the heat-engine in general. (Carnot, 1824, p. 5 and Carnot, 1890, p. 43) is a theoretical heat engine that operates on the Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded by Benoît Paul Émile Clapeyron in 1834 and mathematically explored by Rudolf Clausius in 1857, work that led to the fundamental thermodynamic concept of entropy. The Carnot engine is the most efficient heat engine which is theoretically possible. The efficiency depends only upon the absolute temperatures of the hot and cold heat reservoirs between which it operates.
+
+Carnot cycle 
+The concept of entropy arose from Rudolf Clausius's study of the Carnot cycle which is a thermodynamic cycle performed by a Carnot heat engine as a reversible heat engine. In a Carnot cycle, the heat  is transferred from a hot reservoir to a working gas at the constant temperature  during isothermal expansion stage and the heat  is transferred from a working gas to a cold reservoir at the constant temperature  during isothermal compression stage. According to Carnot's theorem, a heat engine with two thermal reservoirs can produce a work  if and only if there is a temperature difference between reservoirs. Originally, Carnot did not distinguish between heats  and , as he assumed caloric theory to be valid and hence that the total heat in the system was conserved. But in fact, the magnitude of heat  is greater than the magnitude of heat . Through the efforts of Clausius and Kelvin, the work  done by a reversible heat engine was found to be the product of the Carnot efficiency (i.e., the efficiency of all reversible heat engines with the same pair of thermal reservoirs) and the heat  absorbed by a working body of the engine during isothermal expansion:To derive the Carnot efficiency Kelvin had to evaluate the ratio of the work output to the heat absorbed during the isothermal expansion with the help of the Carnot–Clapeyron equation, which contained an unknown function called the Carnot function. The possibility that the Carnot function could be the temperature as measured from a zero point of temperature was suggested by Joule in a letter to Kelvin. This allowed Kelvin to establish his absolute temperature scale.",0.375,local,which of the following is correct? what is the carnot engine? among the listed options.,3534462622
+399,Identify the correct statement: What is the role of axioms in a formal principle? carefully.,"Basis statements called axioms form the foundation of a formal framework and, together with the deducing rules, help in deriving a set of statements called theorems using proof framework.",Axioms are supplementary statements added to a formal principle that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal framework, providing additional perspective to theorems derived from the framework.",The axioms in a framework are used for experimental validation of the theorems derived from the statements in the framework.,"The axioms in a formal principle are added to prove that the statements derived from the principle are true, irrespective of their validity in the real world.",A,"In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.
+
+Logical foundations 
+While the roots of formalized logic go back to Aristotle, the end of the 19th and early 20th centuries saw the development of modern logic and formalized mathematics. Frege's Begriffsschrift (1879) introduced both a complete propositional calculus and what is essentially modern predicate logic. His Foundations of Arithmetic, published in 1884, expressed (parts of) mathematics in formal logic. This approach was continued by Russell and Whitehead in their influential Principia Mathematica, first published 1910–1913, and with a revised second edition in 1927. Russell and Whitehead thought they could derive all mathematical truth using axioms and inference rules of formal logic, in principle opening up the process to automation. In 1920, Thoralf Skolem simplified a previous result by Leopold Löwenheim, leading to the Löwenheim–Skolem theorem and, in 1930, to the notion of a Herbrand universe and a Herbrand interpretation that allowed (un)satisfiability of first-order formulas (and hence the validity of a theorem) to be reduced to (potentially infinitely many) propositional satisfiability problems.
+
+Experimental economics has promoted the use of scientifically controlled experiments. This has reduced the long-noted distinction of economics from natural sciences because it allows direct tests of what were previously taken as axioms. In some cases these have found that the axioms are not entirely correct.",0.5,local,identify the correct statement: what is the role of axioms in a formal principle? carefully.,3727277781
+400,Select the most accurate option: What is a virtual particle? based on the given context.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"Virtual drums
+Virtual drums are a type of audio software that simulates the sound of a drum kit using synthesized drum kit sounds or digital samples of acoustic drum sounds. Different drum software products offer a recording function, the ability to select from several acoustically distinctive drum kits (e.g., jazz, rock, metal), as well as the option to incorporate different songs into the session. Some computer software can turn any hard surface into a virtual drum kit using only one microphone.
+
+When a pair of virtual particles (such as an electron and positron) is created in the vicinity of the event horizon, random spatial positioning might result in one of them to appear on the exterior; this process is called quantum tunnelling. The gravitational potential of the black hole can then supply the energy that transforms this virtual particle into a real particle, allowing it to radiate away into space. In exchange, the other member of the pair is given negative energy, which results in a net loss of mass–energy by the black hole. The rate of Hawking radiation increases with decreasing mass, eventually causing the black hole to evaporate away until, finally, it explodes.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.7777777777777778,local,select the most accurate option: what is a virtual particle? based on the given context.,1906574068
+401,Pick the best possible answer: What was Isaac Newton's explanation for rectilinear propagation of light? among the listed options.,"Isaac Newton rejected the wave framework of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave concept of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave framework of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave principle of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,No match found.,0.0,live_api,pick the best possible answer: what was isaac newton's explanation for rectilinear propagation of light? among the listed options.,2398711051
+402,Pick the best possible answer: What is the effect generated by a spinning superconductor?,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,pick the best possible answer: what is the effect generated by a spinning superconductor?,2699735399
+403,Which of the following is correct? What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? based on the given context.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,"The ratio in the definition of the derivative is the slope of the line through two points on the graph of the function , specifically the points  and . As  is made smaller, these points grow closer together, and the slope of this line approaches the limiting value, the slope of the tangent to the graph of  at . In other words, the derivative is the slope of the tangent.
+
+Other biblical figures
+Apart from the king (or kings) of Gerar, the Bible also records this name for:
+The father of Abiathar, and high priest in the time of David. In the parallel passage, the name is given as Ahimelech; most authorities consider this the more correct reading.
+The king of Gath better known as Achish, referred to as Abimelech or Achimelech in the title of Psalm 34.
+The husband of Naomi, and father of Mahlon and Chilion who leaves Bethlehem and dies in the land of Moab, in the Hebrew, his name is given as Elimelek, which is likely the correct reading.
+
+This gives an exact value for the slope of a straight line. If the graph of the function is not a straight line, however, then the change in  divided by the change in  varies. Derivatives give an exact meaning to the notion of change in output concerning change in input. To be concrete, let  be a function, and fix a point  in the domain of .  is a point on the graph of the function. If  is a number close to zero, then  is a number close to . Therefore,  is close to . The slope between these two points is",0.3684210526315789,local,which of the following is correct? what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? based on the given context.,3464925268
+404,Which of the following is correct? What is the piezoelectric strain coefficient for AT-cut quartz crystals? from the following choices.,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"The piezoelectric properties of crystalline quartz were discovered by Jacques and Pierre Curie in 1880. The first crystal oscillator was invented in 1917 by Alexander M. Nicolson, after which the first quartz crystal oscillator was built by Walter G. Cady in 1921. In 1927 the first quartz clock was built by Warren Marrison and J.W. Horton at Bell Telephone Laboratories in Canada. The following decades saw the development of quartz clocks as precision time measurement devices in laboratory settings—the bulky and delicate counting electronics, built with vacuum tubes at the time, limited their practical use elsewhere. The National Bureau of Standards (now NIST) based the time standard of the United States on quartz clocks from late 1929 until the 1960s, when it changed to atomic clocks. In 1969, Seiko produced the world's first quartz wristwatch, the Astron. Their inherent accuracy and low cost of production resulted in the subsequent proliferation of quartz clocks and watches.",0.4,local,which of the following is correct? what is the piezoelectric strain coefficient for at-cut quartz crystals? from the following choices.,1299732387
+405,Which of the following is correct? What is the reason that Newton's second law cannot be used to calculate the development of a physical mechanism in quantum mechanics? among the listed options.,"The existence of particle spin, which is linear momentum that can be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that is always equal to zero.","The existence of particle spin, which is linear momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that can be described by the cumulative effect of point-like motions in space.",D,"While angular momentum total conservation can be understood separately from Newton's laws of motion as stemming from Noether's theorem in systems symmetric under rotations, it can also be understood simply as an efficient method of calculation of results that can also be otherwise arrived at directly from Newton's second law, together with laws governing the forces of nature (such as Newton's third law, Maxwell's equations and Lorentz force). Indeed, given initial conditions of position and velocity for every point, and the forces at such a condition, one may use Newton's second law to calculate the second derivative of position, and solving for this gives full information on the development of the physical system with time.Tenenbaum, M., & Pollard, H. (1985). Ordinary differential equations en elementary textbook for students of mathematics. Engineering and the Sciences. Note, however, that this is no longer true in quantum mechanics, due to the existence of particle spin, which is an angular momentum that cannot be described by the cumulative effect of point-like motions in space.
+
+Molecular dynamics (MD) use either quantum mechanics, molecular mechanics or a mixture of both to calculate forces which are then used to solve Newton's laws of motion to examine the time-dependent behavior of systems. The result of a molecular dynamics simulation is a trajectory that describes how the position and velocity of particles varies with time. The phase point of a system described by the positions and momenta of all its particles on a previous time point will determine the next phase point in time by integrating over Newton's laws of motion.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.",0.8095238095238095,local,which of the following is correct? what is the reason that newton's second law cannot be used to calculate the development of a physical mechanism in quantum mechanics? among the listed options.,2353552537
+406,Choose the correct answer: What is the distinction between probability mass function (PMF) and probability density function (PDF)? from the following choices.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability framework.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .
+
+The special case when  and  is called the standard Cauchy distribution with the probability density function",0.38461538461538464,local,choose the correct answer: what is the distinction between probability mass function (pmf) and probability density function (pdf)? from the following choices.,1711038195
+407,What is the Carnot engine?,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is an ideal heat engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real heat engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,B,"A Carnot heat engineIn French, Carnot uses machine à feu, which Thurston translates as heat-engine or steam-engine. In a footnote, Carnot distinguishes the steam-engine (machine à vapeur) from the heat-engine in general. (Carnot, 1824, p. 5 and Carnot, 1890, p. 43) is a theoretical heat engine that operates on the Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded by Benoît Paul Émile Clapeyron in 1834 and mathematically explored by Rudolf Clausius in 1857, work that led to the fundamental thermodynamic concept of entropy. The Carnot engine is the most efficient heat engine which is theoretically possible. The efficiency depends only upon the absolute temperatures of the hot and cold heat reservoirs between which it operates.
+
+where  is the efficiency of the real engine, and  is the efficiency of the Carnot engine working between the same two reservoirs at the temperatures  and . For the Carnot engine, the entire process is 'reversible', and Equation () is an equality. Hence, the efficiency of the real engine is always less than the ideal Carnot engine.
+
+The Carnot engine and Rudolf Diesel
+In 1892 Rudolf Diesel patented an internal combustion engine inspired by the Carnot engine. Diesel knew a Carnot engine is an ideal that cannot be built, but he thought he had invented a working approximation. His principle was unsound, but in his struggle to implement it he developed a practical Diesel engine.",1.0,local,what is the carnot engine?,2517382451
+408,Choose the correct answer: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? from the following choices.,The atmosphere is a mechanism that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized structures and time-varying forcing from recurrent seasons.",The atmosphere is a structure that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic structure with no order or organization.,The atmosphere is a completely ordered structure with no chaos or randomness.,B,No match found.,0.0,live_api,choose the correct answer: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? from the following choices.,3353755485
+409,What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy?,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,"In 1856, Norman Robert Pogson formalized the system by defining a first magnitude star as a star that is 100 times as bright as a sixth-magnitude star, thereby establishing the logarithmic scale still in use today. This implies that a star of magnitude  is about 2.512 times as bright as a star of magnitude . This figure, the fifth root of 100, became known as . The 1884 Harvard Photometry and 1886 Potsdamer Durchmusterung star catalogs popularized Pogson's ratio, and eventually it became a de facto standard in modern astronomy to describe differences in brightness.
+
+The scale is reverse logarithmic: the brighter an object is, the lower its magnitude number. A difference of 1.0 in magnitude corresponds to the brightness ratio of , or about 2.512. For example, a magnitude 2.0 star is 2.512 times as bright as a magnitude 3.0 star, 6.31 times as magnitude 4.0, and 100 times as magnitude 7.0.
+
+The more luminous an object, the smaller the numerical value of its absolute magnitude. A difference of 5 magnitudes between the absolute magnitudes of two objects corresponds to a ratio of 100 in their luminosities, and a difference of n magnitudes in absolute magnitude corresponds to a luminosity ratio of 100n/5. For example, a star of absolute magnitude MV = 3.0 would be 100 times as luminous as a star of absolute magnitude MV = 8.0 as measured in the V filter band. The Sun has absolute magnitude MV = +4.83. Highly luminous objects can have negative absolute magnitudes: for example, the Milky Way galaxy has an absolute B magnitude of about −20.8.",0.75,local,what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy?,3281854505
+410,Select the most accurate option: What is the main advantage of ferroelectric memristors? among the listed options.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.2727272727272727,local,select the most accurate option: what is the main advantage of ferroelectric memristors? among the listed options.,2361274379
+411,Which of the following is correct? What is the role of methane in Fischer-Tropsch processes?,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,"With regard to synthetic fuels, an old but still important process is the Fischer–Tropsch synthesis of hydrocarbons from synthesis gas, which itself is processed via water-gas shift reactions, catalyzed by iron. The Sabatier reaction produces methane from carbon dioxide and hydrogen. Biodiesel and related biofuels require processing via both inorganic and biocatalysts.
+
+Methanol is produced by the hydrogenation of carbon monoxide. In a related reaction, the hydrogenation of carbon monoxide is coupled to C−C bond formation, as in the Fischer–Tropsch process where carbon monoxide is hydrogenated to liquid hydrocarbon fuels. This technology allows coal or biomass to be converted to diesel.
+
+Advent of industrial chemistry
+Carbon monoxide gained recognition as an essential reagent in the 1900s.  Three industrial processes illustrate its evolution in industry.  In the Fischer–Tropsch process, coal and related carbon-rich feedstocks are converted into liquid fuels via the intermediacy of CO.  Originally developed as part of the German war effort to compensate for their lack of domestic petroleum, this technology continues today.  Also in Germany, a mixture of CO and hydrogen was found to combine with olefins to give aldehydes.  This process, called hydroformylation, is used to produce many large scale chemicals such as surfactants as well as specialty compounds that are popular fragrances and drugs.  For example, CO is used in the production of vitamin A. In a third major process, attributed to researchers at Monsanto, CO combines with methanol to give acetic acid. Most acetic acid is produced by the Cativa process.  Hydroformylation and the acetic acid syntheses are two of myriad carbonylation processes.",0.625,local,which of the following is correct? what is the role of methane in fischer-tropsch processes?,2300732201
+412,"Pick the best possible answer: What is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? based on the given context.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+As a result of the state's strong environmental movement, California has some of the most aggressive renewable energy goals in the U.S. The Clean Energy, Jobs and Affordability Act of 2022 commits the state to running its operations on clean, renewable energy resources by 2035, and SB 1203 also requires the state to achieve net-zero operations for all agencies. Currently, several solar power plants such as the Solar Energy Generating Systems facility are located in the Mojave Desert. California's wind farms include Altamont Pass, San Gorgonio Pass, and Tehachapi Pass. The Tehachapi area is also where the Tehachapi Energy Storage Project is located. Several dams across the state provide hydro-electric power. It would be possible to convert the total supply to 100% renewable energy, including heating, cooling and mobility, by 2050.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..",0.35294117647058826,local,"pick the best possible answer: what is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? based on the given context.",901691053
+413,Determine the correct option: What is the Einstein@Home project? based on the given context.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+The first part of Einstein's argument was to determine how far a Brownian particle travels in a given time interval. Classical mechanics is unable to determine this distance because of the enormous number of bombardments a Brownian particle will undergo, roughly of the order of 1014 collisions per second.",0.6666666666666666,local,determine the correct option: what is the einstein@home project? based on the given context.,1491758970
+414,Which of the following is correct? What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation?,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+where  corresponds to no parity change or parity change, respectively. The special case of a transition between isobaric analogue states, where the structure of the final state is very similar to the structure of the initial state, is referred to as ""superallowed"" for beta decay, and proceeds very quickly. The following table lists the Δ and Δ values for the first few values of :
+
+Energy levels 
+The molecular term symbol is a shorthand expression of the angular momenta that characterize the electronic quantum states of a diatomic molecule, which are also eigenstates of the electronic molecular Hamiltonian. It is also convenient, and common, to represent a diatomic molecule as two-point masses connected by a massless spring. The energies involved in the various motions of the molecule can then be broken down into three categories: the translational, rotational, and vibrational energies. The theoretical study of the rotational energy levels of the diatomic molecules can be described using the below description of the rotational energy levels. While the study of vibrational energy level of the diatomic molecules can be described using the harmonic oscillator approximation or using the quantum vibrational interaction potentials. These potentials give more accurate energy levels because they take multiple vibrational effects into account.",0.6363636363636364,local,which of the following is correct? what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation?,2780088732
+415,Select the most accurate option: What is the De Haas-Van Alphen effect? based on the given context.,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.",0.4166666666666667,local,select the most accurate option: what is the de haas-van alphen effect? based on the given context.,1100366708
+416,Determine the correct option: What is indirect photophoresis? among the listed options.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,determine the correct option: what is indirect photophoresis? among the listed options.,3498055010
+417,Determine the correct option: What is reciprocal length or inverse length? carefully.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.5,local,determine the correct option: what is reciprocal length or inverse length? carefully.,3381013036
+418,"Identify the correct statement: What are amorphous ferromagnetic metallic alloys, and what are their advantages? from the following choices.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,No match found.,0.0,live_api,"identify the correct statement: what are amorphous ferromagnetic metallic alloys, and what are their advantages? from the following choices.",2241674449
+419,Pick the best possible answer: What was Isaac Newton's explanation for rectilinear propagation of light?,"Isaac Newton rejected the wave concept of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave framework of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave framework of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,"Fresnel gave the first satisfactory explanation of diffraction by straight edges, including the first satisfactory wave-based explanation of rectilinear propagation. By further supposing that light waves are purely transverse, Fresnel explained the nature of polarization. He then worked on double refraction.",0.3333333333333333,local,pick the best possible answer: what was isaac newton's explanation for rectilinear propagation of light?,897426702
+420,"Choose the correct answer: What is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? carefully.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.",0.3333333333333333,local,"choose the correct answer: what is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? carefully.",943641674
+421,Determine the correct option: Which mathematical function is commonly used to characterize linear time-invariant mechanisms? carefully.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,No match found.,0.0,live_api,determine the correct option: which mathematical function is commonly used to characterize linear time-invariant mechanisms? carefully.,2555890794
+422,Select the most accurate option: What is the role of axioms in a formal framework?,"Basis statements called axioms form the foundation of a formal concept and, together with the deducing rules, help in deriving a set of statements called theorems using proof concept.",Axioms are supplementary statements added to a formal principle that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal framework, providing additional perspective to theorems derived from the framework.",The axioms in a concept are used for experimental validation of the theorems derived from the statements in the concept.,"The axioms in a formal concept are added to prove that the statements derived from the concept are true, irrespective of their validity in the real world.",A,"As a matter of fact, the role of axioms in mathematics and postulates in experimental sciences is different. In mathematics one neither ""proves"" nor ""disproves"" an axiom. A set of mathematical axioms gives a set of rules that fix a conceptual realm, in which the theorems logically follow. In contrast, in experimental sciences, a set of postulates shall allow deducing results that match or do not match experimental results. If postulates do not allow deducing experimental predictions, they do not set a scientific conceptual framework and have to be completed or made more accurate. If the postulates allow deducing predictions of experimental results, the comparison with experiments allows falsifying (falsified) the theory that the postulates install. A theory is considered valid as long as it has not been falsified.
+
+In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.
+
+The ontological correlate to the third stratum is the ""theory of manifolds"". In formal ontology, it is a free investigation where a mathematician can assign several meanings to several symbols, and all their possible valid deductions in a general and indeterminate manner. It is, properly speaking, the most universal mathematics of all. Through the positing of certain indeterminate objects (formal-ontological categories) as well as any combination of mathematical axioms, mathematicians can explore the apodeictic connections between them, as long as consistency is preserved.",0.75,local,select the most accurate option: what is the role of axioms in a formal framework?,2408586150
+423,Identify the correct statement: What is the Evans balance? based on the given context.,"The Evans balance is a mechanism used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a mechanism used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a mechanism used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a structure used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a mechanism used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is the evans balance? based on the given context.,2754782993
+424,Select the most accurate option: Which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? among the listed options.,Planetary mechanisms cannot be categorized based on their orbital dynamics.,"Planetary structures can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the structure.",Planetary mechanisms can only be categorized as resonant or non-resonant-interacting.,"Planetary mechanisms can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary mechanisms can only be categorized as hierarchical or non-hierarchical.,D,"The universe comprises all of existence: all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments. Since the early 20th century, the field of cosmology has established that the universe has been expanding for 13.8 billion years, starting from a dense fireball in an event called the Big Bang. The observable portion of the universe is approximately 93 billion light-years in diameter at present. The total size of the universe is not known.
+Some of the earliest cosmological models of the universe were geocentric, placing Earth at the center. During the Scientific Revolution, astronomical observations led to a heliocentric model. Further observational improvements led to the realization that the Sun is one of a few hundred billion stars in the Milky Way, which is one of a few hundred billion galaxies in the observable universe. At the largest scale, galaxies are distributed uniformly and the same in all directions. At smaller scale",0.05263157894736842,live_api,select the most accurate option: which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? among the listed options.,665299961
+425,Choose the correct answer: What is the relationship between dielectric loss and the transparency of a material? carefully.,"Dielectric loss in a material can cause refraction, which can lower the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can raise the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can enhance the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.
+
+The Deseret alphabet was an outgrowth of the Restorationist idealism and utopianism of Young and the early LDS Church. The ""New Alphabet"" was intended to correct ""the corruptions and perversions of language which was originally pure"", and to meet the urgent need for a language to ""answer the demands of a constant intercommunication between several thousand languages"". One ""fitted to meet the great emergency of the great gathering and great work of teaching the law of the Lord to all people.""",0.6,local,choose the correct answer: what is the relationship between dielectric loss and the transparency of a material? carefully.,1162094277
+426,Choose the correct answer: What is the information loss paradox in black holes?,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.
+
+Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .
+
+Black holes have been portrayed in science fiction in a variety of ways. Even before the advent of the term itself, objects with characteristics of black holes appeared in stories such as the 1928 novel The Skylark of Space with its ""black Sun"" and the ""hole in space"" in the 1935 short story Starship Invincible. As black holes grew to public recognition in the 1960s and 1970s, they began to be featured in films as well as novels, such as Disney's The Black Hole. Black holes have also been used in works of the 21st century, such as Christopher Nolan's science fiction epic Interstellar.",0.75,local,choose the correct answer: what is the information loss paradox in black holes?,937243061
+427,Which of the following is correct? What is the Landau-Lifshitz-Gilbert equation used for in physics? based on the given context.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,"Quantum ideal gas law 
+Since for atomic and molecular gases, the classical ideal gas law is well suited in most cases, let us describe the equation of state for elementary particles with mass  and spin  that takes into account quantum effects. In the following, the upper sign will always correspond to Fermi–Dirac statistics and the lower sign to Bose–Einstein statistics. The equation of state of such gases with  particles occupying a volume  with temperature  and pressure  is given byLandau, L. D., Lifshitz, E. M. (1980). Statistical physics: Part I (Vol. 5). page 162-166.
+
+Criticism
+Criticism of the Drake equation is varied. Firstly, many of the terms in the equation are largely or entirely based on conjecture. Star formation rates are well-known, and the incidence of planets has a sound theoretical and observational basis, but the other terms in the equation become very speculative. The uncertainties revolve around the present day understanding of the evolution of life, intelligence, and civilization, not physics. No statistical estimates are possible for some of the parameters, where only one example is known. The net result is that the equation cannot be used to draw firm conclusions of any kind, and the resulting margin of error is huge, far beyond what some consider acceptable or meaningful.
+
+Modern many-body physics
+The Sommerfeld model and spin models for ferromagnetism illustrated the successful application of quantum mechanics to condensed matter problems in the 1930s. However, there still were several unsolved problems, most notably the description of superconductivity and the Kondo effect. After World War II, several ideas from quantum field theory were applied to condensed matter problems. These included recognition of collective excitation modes of solids and the important notion of a quasiparticle. Soviet physicist Lev Landau used the idea for the Fermi liquid theory wherein low energy properties of interacting fermion systems were given in terms of what are now termed Landau-quasiparticles. Landau also developed a mean-field theory for continuous phase transitions, which described ordered phases as spontaneous breakdown of symmetry. The theory also introduced the notion of an order parameter to distinguish between ordered phases. Eventually in 1956, John Bardeen, Leon Cooper and Robert Schrieffer developed the so-called BCS theory of superconductivity, based on the discovery that arbitrarily small attraction between two electrons of opposite spin mediated by phonons in the lattice can give rise to a bound state called a Cooper pair.
+class=skin-invert-image|thumb|right|The quantum Hall effect: Components of the Hall resistivity as a function of the external magnetic field",0.75,local,which of the following is correct? what is the landau-lifshitz-gilbert equation used for in physics? based on the given context.,126464221
+428,"Which of the following is correct? What is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? carefully.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..",0.4,local,"which of the following is correct? what is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? carefully.",2901065130
+429,Pick the best possible answer: What is a Hilbert space in quantum mechanics? based on the given context.,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical structure is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,E,"The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.
+
+In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.",0.5454545454545454,local,pick the best possible answer: what is a hilbert space in quantum mechanics? based on the given context.,3323873185
+430,Identify the correct statement: Which of the following statements accurately describes the origin and significance of the triskeles symbol? among the listed options.,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,No match found.,0.0,live_api,identify the correct statement: which of the following statements accurately describes the origin and significance of the triskeles symbol? among the listed options.,389804659
+431,Which of the following is correct? What is the relevant type of coherence for the Young's double-slit interferometer? from the following choices.,Visibility,Coherence time,Spatial coherence,Coherence length,Diameter of the coherence area (Ac),E,"If waves are emitted from an extended source, this can lead to incoherence in the transversal direction. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherence length. In the case of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting pattern on a screen would look like two single-slit diffraction patterns.
+
+Computer simulations 
+ Java demonstration of Young's double slit interference
+ A simulation that runs in Mathematica Player, in which the number of quantum particles, the frequency of the particles, and the slit separation can be independently varied
+
+The Mach–Zehnder interferometer can be seen as a simplified version of the double-slit experiment. Instead of propagating through free space after the two slits, and hitting any position in an extended screen, in the interferometer the photons can only propagate via two paths, and hit two discrete photodetectors. This makes it possible to describe it via simple linear algebra in dimension 2, rather than differential equations.",0.5833333333333334,local,which of the following is correct? what is the relevant type of coherence for the young's double-slit interferometer? from the following choices.,3173130856
+432,Select the most accurate option: What is the mechanism of FTIR? carefully.,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"Evidence suggests that the concept of electing representatives was originally conceived to be different from democracy. Prior to the 18th century, some societies in Western Europe used sortition as a means to select rulers, a method which allowed regular citizens to exercise power, in keeping with understandings of democracy at the time. The idea of what constituted a legitimate government shifted in the 18th century to include consent, especially with the rise of the enlightenment. From this point onward, sortition fell out of favor as a mechanism for selecting rulers. On the other hand, elections began to be seen as a way for the masses to express popular consent repeatedly, resulting in the triumph of the electoral process until the present day.
+
+Because its mechanism is primitive compared to most modern woodwinds, makers have occasionally attempted to ""reinvent"" the bassoon. In the 1960s, Giles Brindley began to develop what he called the ""logical bassoon"", which aimed to improve intonation and evenness of tone through use of an electrically activated mechanism, making possible key combinations too complex for the human hand to manage. Brindley's logical bassoon was never marketed.
+
+Three mechanisms of resistance to chloramphenicol are known: reduced membrane permeability, mutation of the 50S ribosomal subunit, and elaboration of chloramphenicol acetyltransferase. It is easy to select for reduced membrane permeability to chloramphenicol in vitro by serial passage of bacteria, and this is the most common mechanism of low-level chloramphenicol resistance. High-level resistance is conferred by the cat-gene; this gene codes for an enzyme called chloramphenicol acetyltransferase, which inactivates chloramphenicol by covalently linking one or two acetyl groups, derived from acetyl-S-coenzyme A, to the hydroxyl groups on the chloramphenicol molecule. The acetylation prevents chloramphenicol from binding to the ribosome. Resistance-conferring mutations of the 50S ribosomal subunit are rare.",0.42857142857142855,local,select the most accurate option: what is the mechanism of ftir? carefully.,2370671298
+433,"Pick the best possible answer: Who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"Principal component analysis (PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing.
+The data are linearly transformed onto a new coordinate system such that the directions (principal components) capturing the largest variation in the data can be easily identified.
+The principal components of a collection of points in a real coordinate space are a sequence of 
+  
+    
+      
+        p
+      
+    
+    {\displaystyle p}
+  
+ unit vectors, where the 
+  
+    
+      
+        i
+      
+    
+    {\displaystyle i}
+  
+-th vector is the direction of a line that best fits the data while being orthogonal to the first 
+  
+    
+      
+        i
+        −
+        1
+      
+    
+    {\displaystyle i-1}
+  
+ vectors. Here, a best-fitting line is defined as one that minimizes the average squared perpendicular distance from the points to the line. These directions (i.e., principal components) constitute an orthonormal basis in",0.13333333333333333,live_api,"pick the best possible answer: who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",3362210756
+434,Select the most accurate option: What is the reason for the sun appearing slightly yellowish when viewed from Earth? among the listed options.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,"China has been the source of many innovations, scientific discoveries and inventions. This includes the Four Great Inventions: papermaking, the compass, gunpowder, and early printing (both woodblock and movable type). The list below contains these and other inventions in ancient and modern China attested by archaeological or historical evidence, including prehistoric inventions of Neolithic and early Bronze Age China.
+The historical region now known as China experienced a history involving mechanics, hydraulics and mathematics applied to horology, metallurgy, astronomy, agriculture, engineering, music theory, craftsmanship, naval architecture and warfare. Use of the plow during the Neolithic period Longshan culture (c. 3000 – c. 2000 BC) allowed for high agricultural production yields and rise of Chinese civilization during the Shang dynasty (c. 1600 – c. 1050 BC). Later inventions such as the multiple-tube seed drill and the heavy moldboard iron plow enabled China to sustain a much la",0.0,live_api,select the most accurate option: what is the reason for the sun appearing slightly yellowish when viewed from earth? among the listed options.,4214497304
+435,Choose the correct answer: What is the Landau-Lifshitz-Gilbert equation used for in physics? among the listed options.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,No match found.,0.0,live_api,choose the correct answer: what is the landau-lifshitz-gilbert equation used for in physics? among the listed options.,1176359356
+436,Which of the following is correct? What is the role of axioms in a formal principle? from the following choices.,"Basis statements called axioms form the foundation of a formal principle and, together with the deducing rules, help in deriving a set of statements called theorems using proof principle.",Axioms are supplementary statements added to a formal principle that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal framework, providing additional perspective to theorems derived from the framework.",The axioms in a framework are used for experimental validation of the theorems derived from the statements in the framework.,"The axioms in a formal framework are added to prove that the statements derived from the framework are true, irrespective of their validity in the real world.",A,"In addition to familiar number systems such as the rationals, there are other, less immediate examples of fields. The following example is a field consisting of four elements called , , , and . The notation is chosen such that  plays the role of the additive identity element (denoted 0 in the axioms above), and  is the multiplicative identity (denoted  in the axioms above). The field axioms can be verified by using some more field theory, or by direct computation. For example,
+ , which equals , as required by the distributivity.
+
+In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.
+
+A third view, presented in a number of recent evaluations, is that Jutland, the last major fleet action between battleships, illustrated the irrelevance of battleship fleets following the development of the submarine, mine and torpedo. In this view, the most important consequence of Jutland was the decision of the Germans to engage in unrestricted submarine warfare. Although large numbers of battleships were constructed in the decades between the wars, it has been argued that this outcome reflected the social dominance among naval decision-makers of battleship advocates who constrained technological choices to fit traditional paradigms of fleet action. Battleships played a relatively minor role in World War II, in which the submarine and aircraft carrier emerged as the dominant offensive weapons of naval warfare.",0.75,local,which of the following is correct? what is the role of axioms in a formal principle? from the following choices.,3894962069
+437,Determine the correct option: What is bollard pull primarily used for measuring? carefully.,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,No match found.,0.0,live_api,determine the correct option: what is bollard pull primarily used for measuring? carefully.,919065603
+438,Determine the correct option: What is the definition of dimension in mathematics? from the following choices.,"The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of degrees of freedom of a point that moves on this object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.",C,"Topological spaces
+For any normal topological space , the Lebesgue covering dimension of  is defined to be the smallest integer n for which the following holds: any open cover has an open refinement (a second open cover in which each element is a subset of an element in the first cover) such that no point is included in more than  elements. In this case dim . For  a manifold, this coincides with the dimension mentioned above. If no such integer  exists, then the dimension of  is said to be infinite, and one writes dim . Moreover,  has dimension −1, i.e. dim  if and only if  is empty. This definition of covering dimension can be extended from the class of normal spaces to all Tychonoff spaces merely by replacing the term ""open"" in the definition by the term ""functionally open"".
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.",0.625,local,determine the correct option: what is the definition of dimension in mathematics? from the following choices.,178100272
+439,Determine the correct option: What is the SI base unit of time and how is it defined?,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.",0.625,local,determine the correct option: what is the si base unit of time and how is it defined?,3027809357
+440,Choose the correct answer: What are permutation-inversion groups?,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"The statistics of random permutations, such as the cycle structure of a random permutation, are of fundamental importance in the analysis of algorithms, especially of sorting algorithms, which operate on random permutations. Suppose, for example, that we are using quickselect (a cousin of quicksort) to select a random element of a random permutation. Quickselect will perform a partial sort on the array, as it partitions the array according to the pivot. Hence a permutation will be less disordered after quickselect has been performed. The amount of disorder that remains may be analysed with generating functions. These generating functions depend in a fundamental way on the generating functions of random permutation statistics. Hence it is of vital importance to compute these generating functions.
+The article on random permutations contains an introduction to random permutations.",0.16666666666666666,live_api,choose the correct answer: what are permutation-inversion groups?,2342672628
+441,Which of the following is correct? What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs?,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is significant for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is essential for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is key for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,"The study of the primordial soup: Researchers are investigating the conditions and ingredients that were present on the early Earth that could have led to the formation of the first living organisms, such as the presence of water and organic molecules, and how these ingredients could have led to the formation of the first living organisms. This includes the role of water in the formation of the first cells and in catalysing chemical reactions.
+
+The fas receptor  (First apoptosis signal) – (also known as Apo-1 or CD95) is a transmembrane protein of the TNF family which binds the Fas ligand (FasL). The interaction between Fas and FasL results in the formation of the death-inducing signaling complex (DISC), which contains the FADD, caspase-8 and caspase-10. In some types of cells (type I), processed caspase-8 directly activates other members of the caspase family, and triggers the execution of apoptosis of the cell. In other types of cells (type II), the Fas-DISC starts a feedback loop that spirals into increasing release of proapoptotic factors from mitochondria and the amplified activation of caspase-8.
+
+The dual meanings of doxa, with ""glory"" or ""glorification"" (of God by the church and of the church by God), especially in worship, yield the pair ""correct belief"" and ""true worship"". Together, these express the core of a fundamental teaching about the inseparability of belief and worship and their role in drawing the church together with Christ. All Slavic Orthodox churches use the title Pravoslavie (), meaning ""correctness of glorification"", to denote what is in English Orthodoxy, while the Georgians use the title Martlmadidebeli ().",0.5454545454545454,local,which of the following is correct? what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs?,3058249398
+442,Select the most accurate option: What is the definition of Atomristor? carefully.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"Lionel Robbins (1932) developed implications of what has been termed ""[p]erhaps the most commonly accepted current definition of the subject"":
+
+Despite being currently one of the most widely used, the crown-group definition of Aves has been criticised by some researchers. Lee and Spencer (1997) argued that, contrary to what Gauthier defended, this definition would not increase the stability of the clade and the exact content of Aves will always be uncertain because any defined clade (either crown or not) will have few synapomorphies distinguishing it from its closest relatives. Their alternative definition is synonymous to Avifilopluma.
+
+It is important to think of the acid–base reaction models as theories that complement each other. For example, the current Lewis model has the broadest definition of what an acid and base are, with the Brønsted–Lowry theory being a subset of what acids and bases are, and the Arrhenius theory being the most restrictive.
+The Arrhenius theory describes an acid as a substance that increases the concentration of hydrogen ions (H3O+ or H+) in a solution.
+A base is a substance that increases the concentration of hydroxide ions (OH-) in a solution. However, Arrhenius's definition only applies to substances that are in water.",0.2857142857142857,local,select the most accurate option: what is the definition of atomristor? carefully.,3318034495
+443,Which of the following is correct? What is the proper distance for a redshift of 8.2? from the following choices.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Sheol
+Sheol, in the Hebrew Bible, is a place of darkness (Job 10:21–22) to which all the dead go—both the righteous and the unrighteous—regardless of the moral choices made in life (Genesis 35:37; Book of Ezekiel 32; Isaiah 16; Job 30:23), a place of stillness (Psalm 88:13, 94:17; Ecclesiastes 9:10), at the longest possible distance from Heaven (Job 11:8; Amos 9:2; Psalm 139:8).
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.",0.7777777777777778,local,which of the following is correct? what is the proper distance for a redshift of 8.2? from the following choices.,486647933
+444,Which of the following is correct? What was Pierre de Fermat's solution to the problem of refraction? based on the given context.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.7857142857142857,local,which of the following is correct? what was pierre de fermat's solution to the problem of refraction? based on the given context.,3780858709
+445,Identify the correct statement: What are the constituents of cold dark matter? from the following choices.,"They are unknown, but possibilities include large objects like MACHOs or new particles such as WIMPs and axions.",They are known to be black holes and Preon stars.,They are only MACHOs.,They are clusters of brown dwarfs.,They are new particles such as RAMBOs.,A,"Dark matter can be divided into cold, warm, and hot categories. These categories refer to velocity rather than an actual temperature, and indicate how far corresponding objects moved due to random motions in the early universe, before they slowed due to cosmic expansion. This distance is called the free streaming length. The categories of dark matter are set with respect to the size of the collection of mass prior to structure formation that later collapses to form a dwarf galaxy. This collection of mass is sometimes called a protogalaxy. Dark matter particles are classified as cold, warm, or hot if their free streaming length is much smaller (cold), similar to (warm), or much larger (hot) than the protogalaxy of a dwarf galaxy. Mixtures of the above are also possible: a theory of mixed dark matter was popular in the mid-1990s, but was rejected following the discovery of dark energy.
+
+After the recombination epoch, the slightly denser regions of the uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today. The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter. The best measurements available, from the Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold. This CDM is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about 4.6%. (See Table 8.)
+
+In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form of energy known as dark energy. Thus, dark matter constitutes 85% of the total mass, while dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy, its local density in the Solar System is much less than normal matter. The total of all the dark matter out to the orbit of Neptune would add up about 1017 kg, the same as a large asteroid. Dark matter is classified as ""cold"", ""warm"", or ""hot"" according to velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.",0.4444444444444444,local,identify the correct statement: what are the constituents of cold dark matter? from the following choices.,2795385501
+446,Identify the correct statement: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? among the listed options.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's framework of general relativity.",C,No match found.,0.0,live_api,identify the correct statement: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? among the listed options.,3478062419
+447,Identify the correct statement: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere? among the listed options.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,identify the correct statement: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere? among the listed options.,2422630690
+448,Identify the correct statement: What is the relationship between the amplitude of a sound wave and its loudness? based on the given context.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6153846153846154,local,identify the correct statement: what is the relationship between the amplitude of a sound wave and its loudness? based on the given context.,3152595526
+449,Which of the following is correct? What is the explanation for the effective supersymmetry in quark-diquark models? among the listed options.,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,"Constraints on supersymmetry 
+For decades, the leading candidate for dark matter was the lightest neutralino predicted by supersymmetry. However, extensive searches through the conclusion of the LHC's run 3 (2022–2025) operations have failed to detect the superpartners (such as squarks and gluinos) predicted by supersymmetry models. By late 2025, the ATLAS and CMS collaborations had pushed exclusion limits for gluinos beyond 2.4 TeV, and limits for charginos and neutralinos (""electroweak-inos"") beyond 1 TeV in many scenarios. This persistent absence has ruled out the most favored parameter space for WIMPs, forcing theorists to consider more complex and fine-tuned models such as ""split supersymmetry,"" or to abandon supersymmetry candidates entirely.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+Quarks carry a charge, so knowing the charge of a particle indirectly gives the quark content. For example, the rules above say that a  contains a c quark and some combination of two u and/or d quarks. The c quark has a charge of (Q = +), therefore the other two must be a u quark (Q = +), and a d quark (Q = −) to have the correct total charge (Q = +1).",0.5833333333333334,local,which of the following is correct? what is the explanation for the effective supersymmetry in quark-diquark models? among the listed options.,2373566415
+450,"Identify the correct statement: Who proposed the concept of ""maximal acceleration""? among the listed options.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Ecofascism, sometimes spelled eco-fascism, is a term used to describe individuals and groups which combine environmentalism with fascism. In older literature, eco-fascism was viewed as a hypothetical form of totalitarianism based on environmentalism. Since the 2010s, a number of individuals and groups have emerged that either self-identify as ""ecofascist"" or have been labelled as ""ecofascist"" by academic and journalistic sources. These individuals and groups synthesise radical far-right politics with environmentalism; they will typically argue that overpopulation is the primary threat to the environment and that the only solution is a complete halt to immigration or, at their most extreme, genocide against various groups and ethnicities. Many far-right political parties have added green politics to their platforms. Through the 2010s, ecofascism has also seen increasing support, and subsequently has seen increasing interest from researchers.",0.1,live_api,"identify the correct statement: who proposed the concept of ""maximal acceleration""? among the listed options.",1688175979
+451,"Identify the correct statement: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? among the listed options.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"There is an ongoing opioid epidemic (also known as the opioid crisis) in the United States, originating out of both medical prescriptions and illegal sources. It has been described by doctors and researchers as ""one of the most devastating public health catastrophes of our time"". The opioid epidemic unfolded in three waves. The first wave of the epidemic in the United States began  in the late 1990s, according to the Centers for Disease Control and Prevention (CDC), when opioids were increasingly prescribed for pain management, resulting in a rise in overall opioid use throughout subsequent years. The second wave was from an expansion in the heroin market to supply already addicted people. The third wave, starting in 2013, was marked by a steep tenfold increase in the synthetic opioid-involved death rate as synthetic opioids flooded the US market.
+In the United States, there were approximately 109,600 drug-overdose-related deaths in the 12-month period ending January 31, 2023, at a rat",0.0,live_api,"identify the correct statement: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? among the listed options.",4088799887
+452,Which of the following is correct? What was the aim of the Gravity Probe B (GP-B) mission? among the listed options.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"The B-1 was first used in combat in support of operations in Iraq during Operation Desert Fox in December 1998, employing unguided GP weapons. B-1s have been subsequently used in Operation Allied Force (Kosovo) and, most notably, in Operation Enduring Freedom in Afghanistan and the 2003 invasion of Iraq. The B-1 has deployed an array of conventional weapons in war zones, most notably the GBU-31,  JDAM. In the first six months of Operation Enduring Freedom, eight B-1s dropped almost 40 percent of aerial ordnance, including some 3,900 JDAMs. JDAM munitions were heavily used by the B-1 over Iraq, notably on 7 April 2003 in an unsuccessful attempt to kill Saddam Hussein and his two sons. During Operation Enduring Freedom, the B-1 was able to raise its mission capable rate to 79%.
+
+After the inactivation of SAC and the establishment of the Air Combat Command (ACC) in 1992, the B-1 developed a greater conventional weapons capability. Part of this development was the start-up of the U.S. Air Force Weapons School B-1 Division.Scott, Ed. ""JDAM Course Ushers B-1 Students Into New Era"". Program Manager, 1 November 1999. Retrieved 14 August 2010. In 1994, two additional B-1 bomb wings were also created in the Air National Guard, with former fighter wings in the Kansas Air National Guard and the Georgia Air National Guard converting to the aircraft. By the mid-1990s, the B-1 could employ GP weapons as well as various CBUs. By the end of the 1990s, with the advent of the ""Block D"" upgrade, the B-1 boasted a full array of guided and unguided munitions.
+
+Lacking cooperation from the Pentagon in the making of the film, the set designers reconstructed the aircraft cockpit to the best of their ability by comparing the cockpit of a B-29 Superfortress and a single photograph of the cockpit of a B-52 and relating this to the geometry of the B-52's fuselage. The B-52 was state-of-the-art in the 1960s, and its cockpit was off-limits to the film crew. When some United States Air Force personnel were invited to view the reconstructed B-52 cockpit, they said that ""it was absolutely correct, even to the little black box which was the CRM."" It was so accurate that Kubrick was concerned about whether Adam's team had carried out all its research legally.",0.46153846153846156,local,which of the following is correct? what was the aim of the gravity probe b (gp-b) mission? among the listed options.,3961329162
+453,Identify the correct statement: What is the Landau-Lifshitz-Gilbert equation used for in physics? among the listed options.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,No match found.,0.0,live_api,identify the correct statement: what is the landau-lifshitz-gilbert equation used for in physics? among the listed options.,1677688864
+454,Select the most accurate option: What is a Schwarzschild black hole? among the listed options.,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.
+
+The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole.",0.3,local,select the most accurate option: what is a schwarzschild black hole? among the listed options.,3628707474
+455,Which of the following is correct? What is the Peierls bracket in canonical quantization? based on the given context.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization procedure.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization approach that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization technique.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization procedure.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.4,local,which of the following is correct? what is the peierls bracket in canonical quantization? based on the given context.,1167769078
+456,Choose the correct answer: What is the purpose of the proximity-focusing design in a RICH detector? from the following choices.,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.",0.6363636363636364,local,choose the correct answer: what is the purpose of the proximity-focusing design in a rich detector? from the following choices.,1457660608
+457,Choose the correct answer: What are permutation-inversion groups?,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"The statistics of random permutations, such as the cycle structure of a random permutation, are of fundamental importance in the analysis of algorithms, especially of sorting algorithms, which operate on random permutations. Suppose, for example, that we are using quickselect (a cousin of quicksort) to select a random element of a random permutation. Quickselect will perform a partial sort on the array, as it partitions the array according to the pivot. Hence a permutation will be less disordered after quickselect has been performed. The amount of disorder that remains may be analysed with generating functions. These generating functions depend in a fundamental way on the generating functions of random permutation statistics. Hence it is of vital importance to compute these generating functions.
+The article on random permutations contains an introduction to random permutations.",0.16666666666666666,live_api,choose the correct answer: what are permutation-inversion groups?,2342672628
+458,Which of the following is correct? What is a uniform tiling in the hyperbolic plane? based on the given context.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,"In the hyperbolic case, the Hartman–Grobman theorem gives the conditions for the existence of a continuous function that maps the neighborhood of the fixed point of the map to the linear map J · x. The hyperbolic case is also structurally stable.  Small changes in the vector field will only produce small changes in the Poincaré map and these small changes will reflect in small changes in the position of the eigenvalues of J in the complex plane, implying that the map is still hyperbolic.
+
+The extension to , which is the eccentricity of a circle, is not allowed in this context in the Euclidean plane. However, one may consider the directrix of a circle to be the line at infinity in the projective plane.
+
+The total differential of u is
+, and similarly for v.
+Then the image  is a linear transformation, fixing the origin, and expressible as the action of a complex number of a particular type. When (dx, dy) is also interpreted as that type of complex number, the action is of complex multiplication in the appropriate complex number plane. As such, there is a type of angle (Euclidean, hyperbolic, or slope) that is preserved in such a multiplication. Due to Df being invertible, the type of complex number is uniform over the surface. Consequently, a surface deformation or diffeomorphism of surfaces has the conformal property of preserving (the appropriate type of) angles.",0.5,local,which of the following is correct? what is a uniform tiling in the hyperbolic plane? based on the given context.,412226978
+459,"Pick the best possible answer: What is the reason behind the designation of Class L dwarfs, and what is their color and composition? among the listed options.","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,No match found.,0.0,live_api,"pick the best possible answer: what is the reason behind the designation of class l dwarfs, and what is their color and composition? among the listed options.",2860839058
+460,Select the most accurate option: What was Pierre de Fermat's solution to the problem of refraction? from the following choices.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.5714285714285714,local,select the most accurate option: what was pierre de fermat's solution to the problem of refraction? from the following choices.,2910409578
+461,How many crystallographic point groups are there in three-dimensional space?,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.
+
+In a manner analogous to the way lines in a two-dimensional space are described using a point-slope form for their equations, planes in a three dimensional space have a natural description using a point in the plane and a vector orthogonal to it (the normal vector) to indicate its ""inclination"".
+
+An example of a honeycomb with a cubic type only, called a cell, is a cubic honeycomb that consists of four cubes around its edges in Euclidean three-dimensional space. More examples in three-dimensional non-Euclidean space are the honeycomb with three cubes around its edges in a three-dimensional sphere and the honeycomb with five cubes around its edges in hyperbolic space.",0.5,local,how many crystallographic point groups are there in three-dimensional space?,798624661
+462,Identify the correct statement: What is the proper distance for a redshift of 8.2? carefully.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",0.6666666666666666,local,identify the correct statement: what is the proper distance for a redshift of 8.2? carefully.,3780709498
+463,"Identify the correct statement: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.","MOND is a framework that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a concept that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a framework that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a principle that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"identify the correct statement: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.",2002998845
+464,Pick the best possible answer: What is the significance of regularization in terms of renormalization problems in physics? carefully.,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a principle that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a mechanism below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a structure under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a framework below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.
+
+In 1935, Carrel's book, L'Homme, cet inconnu (Man, the Unknown), became a best-seller. The book attempted to comprehensively outline what is known, and unknown, of the human body and human life ""in light of discoveries in biology, physics, and medicine"", to shed light on the problems of the modern world, and to provide possible routes to a better life for human beings.",0.45454545454545453,local,pick the best possible answer: what is the significance of regularization in terms of renormalization problems in physics? carefully.,1383804998
+465,Select the most accurate option: What is the Landau-Lifshitz-Gilbert equation used for in physics?,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,This glossary of engineering terms is a list of definitions about the major concepts of engineering. Please see the bottom of the page for glossaries of specific fields of engineering.,0.0,live_api,select the most accurate option: what is the landau-lifshitz-gilbert equation used for in physics?,2636291636
+466,Choose the correct answer: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? among the listed options.,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,choose the correct answer: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? among the listed options.,3418537086
+467,What is spatial dispersion?,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in systems, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in systems, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in systems, commonly seen in optics and electronics.",D,"Physics
+The dependence of wave velocity on frequency or wavelength:
+Dispersion (optics), for light waves
+Dispersion (water waves), for water waves
+Acoustic dispersion, for sound waves
+Dispersion relation, the mathematical description of dispersion in a system
+Modal dispersion, spreading of signals in multimode fibers and waveguides by a distortion mechanism
+Polarization mode dispersion, a form of modal dispersion
+Dielectric dispersion, the dependence of the permittivity of a dielectric material on the frequency of an applied electric field
+Dispersion measure, the dispersion of radio signals from pulsars and fast radio bursts
+Dispersive mass transfer, in fluid dynamics, the spreading of mass from areas of high to low concentration
+Atmospheric dispersion modeling, mathematical simulation of how air pollutants disperse in the ambient atmosphere
+London dispersion force, an instantaneous induced dipole-induced dipole
+Dispersed particle resistance, a measured parameter to characterize battery active materials
+
+Science and mathematics
+Mathematics
+Statistical dispersion, a quantifiable variation of measurements of differing members of a population
+Index of dispersion, a normalized measure of the dispersion of a probability distribution
+Dispersion point, a point in a topological space the removal of which leaves the space highly disconnected
+
+The central tendency of a distribution is typically contrasted with its dispersion or variability; dispersion and central tendency are the often characterized properties of distributions. Analysis may judge whether data has a strong or a weak central tendency based on its dispersion.",0.5,local,what is spatial dispersion?,1847400459
+468,Determine the correct option: What is a virtual particle? from the following choices.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"The triplet deuteron nucleon is barely bound at , and none of the higher energy states are bound. The singlet deuteron is a virtual state, with a negative binding energy of . There is no such stable particle, but this virtual particle transiently exists during neutron–proton inelastic scattering, accounting for the unusually large neutron scattering cross-section of the proton.
+
+While an electron–positron virtual pair is in existence, the Coulomb force from the ambient electric field surrounding an electron causes a created positron to be attracted to the original electron, while a created electron experiences a repulsion. This causes what is called vacuum polarization. In effect, the vacuum behaves like a medium having a dielectric permittivity more than unity. Thus the effective charge of an electron is actually smaller than its true value, and the charge decreases with increasing distance from the electron. This polarization was confirmed experimentally in 1997 using the Japanese TRISTAN particle accelerator. Virtual particles cause a comparable shielding effect for the mass of the electron. – lists a 9% mass difference for an electron that is the size of the Planck distance.
+
+The first part of Einstein's argument was to determine how far a Brownian particle travels in a given time interval. Classical mechanics is unable to determine this distance because of the enormous number of bombardments a Brownian particle will undergo, roughly of the order of 1014 collisions per second.",0.42857142857142855,local,determine the correct option: what is a virtual particle? from the following choices.,3503199743
+469,Determine the correct option: What is Lorentz symmetry or Lorentz invariance in relativistic physics? from the following choices.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.2727272727272727,live_api,determine the correct option: what is lorentz symmetry or lorentz invariance in relativistic physics? from the following choices.,2133259623
+470,Pick the best possible answer: Which of the following statements accurately describes the dimension of an object in a CW complex? carefully.,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+An inductive dimension may be defined inductively as follows. Consider a discrete set of points (such as a finite collection of points) to be 0-dimensional. By dragging a 0-dimensional object in some direction, one obtains a 1-dimensional object. By dragging a 1-dimensional object in a new direction, one obtains a 2-dimensional object. In general, one obtains an ()-dimensional object by dragging an -dimensional object in a new direction. The inductive dimension of a topological space may refer to the small inductive dimension or the large inductive dimension, and is based on the analogy that, in the case of metric spaces,  balls have -dimensional boundaries, permitting an inductive definition based on the dimension of the boundaries of open sets. Moreover, the boundary of a discrete set of points is the empty set, and therefore the empty set can be taken to have dimension −1. Extract of page 24",0.2857142857142857,local,pick the best possible answer: which of the following statements accurately describes the dimension of an object in a cw complex? carefully.,1562056540
+471,Select the most accurate option: What is the interstellar medium (ISM)?,"The matter and radiation that exist in the space between the star structures in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar structure, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.
+
+Astronomy 
+Beyond Earth, carbon monoxide is the second-most common diatomic molecule in the interstellar medium, after molecular hydrogen.  Because of its asymmetry, this polar molecule produces far brighter spectral lines than the hydrogen molecule, making CO much easier to detect.  Interstellar CO was first detected with radio telescopes in 1970. It is now the most commonly used tracer of molecular gas in general in the interstellar medium of galaxies, as molecular hydrogen can only be detected using ultraviolet light, which requires space telescopes. Carbon monoxide observations provide much of the information about the molecular clouds in which most stars form.
+
+Interstellar medium
+The cyanide radical •CN has been identified in interstellar space. Cyanogen, , is used to measure the temperature of interstellar gas clouds.",0.5714285714285714,local,select the most accurate option: what is the interstellar medium (ism)?,1947914385
+472,Which of the following is correct? Which of the following statements accurately describes the dimension of an object in a CW complex? from the following choices.,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+The dimension is an intrinsic property of an object, in the sense that it is independent of the dimension of the space in which the object is or can be embedded. For example, a curve, such as a circle, is of dimension one, because the position of a point on a curve is determined by its signed distance along the curve to a fixed point on the curve. This is independent from the fact that a curve cannot be embedded in a Euclidean space of dimension lower than two, unless it is a line. Similarly, a surface is of dimension two, even if embedded in three-dimensional space.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.",0.36363636363636365,local,which of the following is correct? which of the following statements accurately describes the dimension of an object in a cw complex? from the following choices.,2153345708
+473,Identify the correct statement: What is indirect photophoresis? among the listed options.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,identify the correct statement: what is indirect photophoresis? among the listed options.,4100794600
+474,Identify the correct statement: What is the main focus of the Environmental Science Center at Qatar University? carefully.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Cloning Fact Sheet  from Human Genome Project Information website.
+ 'Cloning' Freeview video by the Vega Science Trust and the BBC/OU
+ Cloning in Focus, an accessible and comprehensive look at cloning research from the University of Utah's Genetic Science Learning Center
+ Click and Clone. Try it yourself in the virtual mouse cloning laboratory, from the University of Utah's Genetic Science Learning Center
+ ""Cloning Addendum: A statement on the cloning report issues by the President's Council on Bioethics"" . National Review, 15 July 2002 8:45 am",0.45454545454545453,local,identify the correct statement: what is the main focus of the environmental science center at qatar university? carefully.,2205942359
+475,Choose the correct answer: What is the function of the fibrous cardiac skeleton? from the following choices.,The fibrous cardiac skeleton is a structure of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+In differential equations, the function  is often used to simplify solutions, even if the final answer is a real function involving sine and cosine. The reason for this is that the exponential function is the eigenfunction of the operation of differentiation.",0.5555555555555556,local,choose the correct answer: what is the function of the fibrous cardiac skeleton? from the following choices.,2057905179
+476,Pick the best possible answer: What is the Maxwell's Demon thought experiment? based on the given context.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an boost in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an raise in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an enhance in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a minimize in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"Professional wrestling, often referred to as pro wrestling, or simply, wrestling, is a form of athletic theater centered around mock combat, with the premise that its performers are competitive wrestlers. The legitimate sport of wrestling has never been popular enough in the United States to sustain a professional scene because the action is considered too slow-paced. In the late 19th century, wrestlers dealt with this by quietly fixing their matches so that they could display more entertaining action. Through improvisation and choreography, they could perform more spectacular moves that rarely (if ever) occurred in a real wrestling match, and thus managed to draw sustainable audiences.
+Match fixing in sports was frowned upon then as much as it is now, so the wrestlers kept the practice a secret. Wrestling promoters scripted victories for their more charismatic wrestlers to please the fans. Since charisma mattered more than skill to a wrestler's success, wrestlers adopted personae and",0.08333333333333333,live_api,pick the best possible answer: what is the maxwell's demon thought experiment? based on the given context.,109106854
+477,Select the most accurate option: What is the effect generated by a spinning superconductor? from the following choices.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate  pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to form images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy.
+MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long, confining tube, although ""open"" MRI designs mostly",0.0,live_api,select the most accurate option: what is the effect generated by a spinning superconductor? from the following choices.,481777962
+478,What is the role of the Higgs boson in the Standard Model?,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.8,local,what is the role of the higgs boson in the standard model?,246035870
+479,Pick the best possible answer: What is the main focus of the Environmental Science Center at Qatar University? carefully.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Albert Arnold Gore Jr. (born March 31, 1948) is an American politician, businessman, and environmentalist who served as the 45th vice president of the United States from 1993 to 2001 under President Bill Clinton. A member of the Democratic Party, he previously represented Tennessee in both houses of the U.S. Congress, first as a member of the U.S. House of Representatives from 1977 to 1985, and then as a U.S. senator from 1985 to 1993. Gore was the Democratic nominee in the 2000 presidential election, losing to Republican nominee George W. Bush.
+The son of politician Albert Gore Sr., Gore was raised in Tennessee and Washington, D.C., where he was born. After graduating from Harvard University and serving in the U.S. Army, he quit law school to run as a representative for Tennessee's 4th congressional district in 1976. Gore was re-elected three times before running for U.S. Senate in 1984, winning re-election in 1990. He was considered a moderate and an ""Atari Democrat"". Gore served as",0.08333333333333333,live_api,pick the best possible answer: what is the main focus of the environmental science center at qatar university? carefully.,146056651
+480,What is emissivity?,Emissivity is a measure of how well a surface resists deformation under stress.,Emissivity is a measure of how well a surface conducts heat.,Emissivity is a measure of how well a surface absorbs and emits thermal radiation.,Emissivity is a measure of how well a surface reflects visible light.,Emissivity is a measure of how well a surface absorbs and emits sound waves.,C,"Bio-geoengineering
+ Cool roof
+ Daisyworld
+ Emissivity
+ Exitance
+ Global dimming
+ Ice–albedo feedback
+ Irradiance
+ Kirchhoff's law of thermal radiation
+ Opposition surge
+ Polar see-saw
+ Radar astronomy
+ Solar radiation management
+
+In practice, realising a standard based on Violle's proposal turned out to be more difficult than expected. Impurities on the surface of the platinum could directly affect its emissivity, and in addition impurities could affect the luminous intensity by altering the melting point. Over the following half century various scientists tried to make a practical intensity standard based on incandescent platinum. The successful approach was to suspend a hollow shell of thorium dioxide with a small hole in it in a bath of molten platinum. The shell (cavity) serves as a black body, producing black-body radiation that depends on the temperature and is not sensitive to details of how the device is constructed.",1.0,local,what is emissivity?,893901859
+481,What is a virtual particle?,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"The triplet deuteron nucleon is barely bound at , and none of the higher energy states are bound. The singlet deuteron is a virtual state, with a negative binding energy of . There is no such stable particle, but this virtual particle transiently exists during neutron–proton inelastic scattering, accounting for the unusually large neutron scattering cross-section of the proton.
+
+While an electron–positron virtual pair is in existence, the Coulomb force from the ambient electric field surrounding an electron causes a created positron to be attracted to the original electron, while a created electron experiences a repulsion. This causes what is called vacuum polarization. In effect, the vacuum behaves like a medium having a dielectric permittivity more than unity. Thus the effective charge of an electron is actually smaller than its true value, and the charge decreases with increasing distance from the electron. This polarization was confirmed experimentally in 1997 using the Japanese TRISTAN particle accelerator. Virtual particles cause a comparable shielding effect for the mass of the electron. – lists a 9% mass difference for an electron that is the size of the Planck distance.
+
+Photons mediate electromagnetic interactions between particles in quantum electrodynamics. An isolated electron at a constant velocity cannot emit or absorb a real photon; doing so would violate conservation of energy and momentum. Instead, virtual photons can transfer momentum between two charged particles. This exchange of virtual photons, for example, generates the Coulomb force. Energy emission can occur when a moving electron is deflected by a charged particle, such as a proton. The deceleration of the electron results in the emission of Bremsstrahlung radiation.",1.0,local,what is a virtual particle?,3538178333
+482,Choose the correct answer: What is water hammer? among the listed options.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing mechanisms.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to enhance the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"On June 22, 2025, the United States Air Force and Navy attacked three nuclear facilities in Iran as part of the Twelve-Day War, under the code name Operation Midnight Hammer. The Fordow Uranium Enrichment Plant, the Natanz Nuclear Facility, and the Isfahan Nuclear Technology Center were targeted with fourteen GBU-57A/B MOP ""bunker buster"" bombs carried by B-2 Spirit stealth bombers, and Tomahawk missiles fired from a submarine. According to U.S. president Donald Trump, US F-35 and F-22 fighters also entered Iran's airspace to draw its surface-to-air missiles, but no launches were detected.
+The attack was the United States' only offensive action in the Twelve-Day War, which began on June 13 with surprise Israeli strikes, and ended with the ceasefire on June 24, 2025. It was the first U.S. attack on an Iranian target since the 2020 assassination of Qasem Soleimani, and on Iran's territory since a 1988 naval offensive. President Trump said the strikes ""completely and totally obliterated""",0.125,live_api,choose the correct answer: what is water hammer? among the listed options.,1785971481
+483,"Choose the correct answer: Who proposed the concept of ""maximal acceleration""? from the following choices.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"The counterculture of the 1960s was an anti-establishment cultural phenomenon and political movement that developed in the Western world during the mid-20th century. It began in the mid-1960s and continued through the early 1970s. It is often synonymous with cultural liberalism and with the various social changes of the decade. The effects of the movement have been ongoing to the present day. The aggregate movement gained momentum as the civil rights movement in the United States had made significant progress, such as the Voting Rights Act of 1965, and with the intensification of the Vietnam War that same year, it became revolutionary to some.
+As the movement progressed, widespread social tensions also developed concerning other issues, and tended to flow along generational lines regarding respect for the individual, human sexuality, women's rights, traditional modes of authority, rights of people of color, end of racial segregation, experimentation with psychoactive drugs, and differi",0.0,live_api,"choose the correct answer: who proposed the concept of ""maximal acceleration""? from the following choices.",2020466964
+484,Choose the correct answer: Which of the following is an accurate definition of dynamic scaling in self-similar structures? among the listed options.,"Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar structures, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"In the field of management, strategic management involves the formulation and implementation of the major goals and initiatives taken by an organization's  managers on behalf of stakeholders, based on consideration of resources and an assessment of the internal and external environments in which the organization operates. Strategic management provides overall direction to an enterprise and involves specifying the organization's objectives, developing policies, and plans to achieve those objectives, and then allocating resources to implement the plans. Academics and practicing managers have developed numerous models and frameworks to assist in strategic decision-making in the context of complex organizational environments and competitive dynamics. Strategic management is not static in nature; the models can include a feedback loop to monitor execution and to inform the next round of planning.
+Michael Porter identifies three principles underlying strategy:
+
+Creating a ""unique and valuabl",0.06666666666666667,live_api,choose the correct answer: which of the following is an accurate definition of dynamic scaling in self-similar structures? among the listed options.,2762911145
+485,Choose the correct answer: What are the four qualitative levels of crystallinity described by geologists?,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,No match found.,0.0,live_api,choose the correct answer: what are the four qualitative levels of crystallinity described by geologists?,2911039918
+486,Which of the following is correct? What is the relationship between the amplitude of a sound wave and its loudness? based on the given context.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.46153846153846156,local,which of the following is correct? what is the relationship between the amplitude of a sound wave and its loudness? based on the given context.,3797917620
+487,Choose the correct answer: What was the aim of the Gravity Probe B (GP-B) mission?,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"The B-1 was first used in combat in support of operations in Iraq during Operation Desert Fox in December 1998, employing unguided GP weapons. B-1s have been subsequently used in Operation Allied Force (Kosovo) and, most notably, in Operation Enduring Freedom in Afghanistan and the 2003 invasion of Iraq. The B-1 has deployed an array of conventional weapons in war zones, most notably the GBU-31,  JDAM. In the first six months of Operation Enduring Freedom, eight B-1s dropped almost 40 percent of aerial ordnance, including some 3,900 JDAMs. JDAM munitions were heavily used by the B-1 over Iraq, notably on 7 April 2003 in an unsuccessful attempt to kill Saddam Hussein and his two sons. During Operation Enduring Freedom, the B-1 was able to raise its mission capable rate to 79%.",0.4,local,choose the correct answer: what was the aim of the gravity probe b (gp-b) mission?,3835721823
+488,Choose the correct answer: What is the result of the collapse of a cavitation bubble? from the following choices.,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a lower in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp enhance in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+Cavitation in fluid mechanics and engineering normally is the phenomenon in which the static pressure of a liquid reduces to below the liquid's vapor pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, called ""bubbles"" or ""voids"", collapse and can generate shock waves that may damage machinery. As a concrete propeller example: The pressure on the suction side of the propeller blades can be very low and when the pressure falls to that of the vapour pressure of the working liquid, cavities filled with gas vapour can form. The process of the formation of these cavities is referred to as cavitation. If the cavities move into the regions of higher pressure (lower velocity), they will implode or collapse. These shock waves are strong when they are very close to the imploded bubble, but rapidly weaken as they propagate away from the implosion. Cavitation collapse is therefore a significant cause of wear in some engineering contexts. Collapsing voids that implode near to a hard surface cause cyclic stress through repeated implosion. This results in surface fatigue of the material, causing a type of damage also called ""cavitation damage"" or ""cavitation erosion"". The most common examples of this kind of wear are to pump impellers, and pipe bends where a sudden change in the direction of fast moving liquid occurs.",0.4444444444444444,local,choose the correct answer: what is the result of the collapse of a cavitation bubble? from the following choices.,2082183632
+489,Select the most accurate option: What is the main advantage of ferroelectric memristors?,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"In turn, pyroelectricity is seen most strongly in materials that also display the ferroelectric effect, in which a stable electric dipole can be oriented or reversed by applying an electrostatic field. Pyroelectricity is also a necessary consequence of ferroelectricity. This can be used to store information in ferroelectric capacitors, elements of ferroelectric RAM.",0.25,local,select the most accurate option: what is the main advantage of ferroelectric memristors?,1289714617
+490,Select the most accurate option: What is the main advantage of ferroelectric memristors? based on the given context.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,No match found.,0.0,live_api,select the most accurate option: what is the main advantage of ferroelectric memristors? based on the given context.,2009865946
+491,"Choose the correct answer: Who proposed the principle of ""complexity from noise"" and when was it first introduced? based on the given context.",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"It is common to put compression, wah and overdrive pedals at the start of the chain; modulation (chorus, flanger, phase shifter) in the middle; and time-based units (delay/echo, reverb at the end. When using many effects, unwanted noise and hum can be introduced into the sound. Some performers use a noise gate pedal at the end of a chain to reduce unwanted noise and hum introduced by overdrive units or vintage gear.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.5,local,"choose the correct answer: who proposed the principle of ""complexity from noise"" and when was it first introduced? based on the given context.",1542156026
+492,Pick the best possible answer: Which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? based on the given context.,"Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar structures, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"In philosophy, Occam's razor (also spelled Ockham's razor or Ocham's razor; Latin: novacula Occami) is the problem-solving principle that recommends searching for explanations constructed with the smallest possible set of elements. It is also known as the principle of parsimony or the law of parsimony (Latin: lex parsimoniae). Attributed to William of Ockham, a 14th-century English philosopher and theologian, it is frequently cited as Entia non sunt multiplicanda praeter necessitatem, which translates as ""Entities must not be multiplied beyond necessity"", although Occam never used those exact words. Popularly, the principle is sometimes paraphrased as ""of two competing theories, the simpler explanation of an entity is to be preferred"".
+The philosophical razor advocates that when presented with competing hypotheses about the same prediction and both hypotheses have equal explanatory power, one should prefer the hypothesis that requires the fewest assumptions, and that this is not meant",0.125,live_api,pick the best possible answer: which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? based on the given context.,4256270107
+493,Choose the correct answer: Who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism? among the listed options.,Maxwell,Einstein,Galileo,Faraday,Newton,A,No match found.,0.0,live_api,choose the correct answer: who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism? among the listed options.,337344116
+494,Identify the correct statement: What is the significance of the discovery of the Crab pulsar? from the following choices.,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+In the early 1990s, a group of astronomers led by Donald Backer, who were studying what they thought was a binary pulsar (PSR B1620−26 b), determined that a third object was needed to explain the observed Doppler shifts. Within a few years, the gravitational effects of the planet on the orbit of the pulsar and white dwarf had been measured, giving an estimate of the mass of the third object that was too small to be a star. The conclusion that the third object was a planet was announced by Stephen Thorsett and his collaborators in 1993.",0.4444444444444444,local,identify the correct statement: what is the significance of the discovery of the crab pulsar? from the following choices.,3185528969
+495,Which of the following is correct? What happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,"The excess base metal will often solidify, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often crystallize-out, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often dissolve, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often liquefy, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often evaporate, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.",B,No match found.,0.0,live_api,which of the following is correct? what happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,1820322829
+496,Which of the following is correct? What is indirect photophoresis? based on the given context.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In Confucianism, the concept of li is closely related to yì (), which is based upon the idea of reciprocity. Yì can be translated as righteousness, though it may mean what is ethically best to do in a certain context. The term contrasts with action done out of self-interest or profitableness (). While pursuing one's own self-interest is not necessarily bad, one would be a better, more righteous person if one's life was based upon following a path designed to enhance the greater good. Thus an outcome of yì is doing the right thing for its own sake, without regarding the material gains.",0.75,local,which of the following is correct? what is indirect photophoresis? based on the given context.,1074595552
+497,Identify the correct statement: What is the reason for the formation of stars exclusively within molecular clouds? based on the given context.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.38461538461538464,local,identify the correct statement: what is the reason for the formation of stars exclusively within molecular clouds? based on the given context.,4268717788
+498,What are the four qualitative levels of crystallinity described by geologists?,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,"The crystallinity of ceramic materials varies widely. Most often, fired ceramics are either vitrified or semi-vitrified, as is the case with earthenware, stoneware, and porcelain. Varying crystallinity and electron composition in the ionic and covalent bonds cause most ceramic materials to be good thermal and electrical insulators (researched in ceramic engineering). With such a large range of possible options for the composition/structure of a ceramic (nearly all of the elements, nearly all types of bonding, and all levels of crystallinity), the breadth of the subject is vast, and identifiable attributes (hardness, toughness, electrical conductivity) are difficult to specify for the group as a whole. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity, chemical resistance, and low ductility are the norm, with known exceptions to each of these rules (piezoelectric ceramics, low glass transition temperature ceramics, superconductive ceramics).",0.3333333333333333,local,what are the four qualitative levels of crystallinity described by geologists?,3638549138
+499,Which of the following is correct? What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,which of the following is correct? what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,1835855122
+500,"Identify the correct statement: What is the concept of simultaneity in Einstein's book, Relativity? carefully.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Frank Dyson, the ninth Astronomer Royal, determined latitude variation caused by irregular movement of Earth's magnetic poles. He used a telescope floating in mercury and was able to detect when the poles of the earth wobbled greater than one foot. During the 1919 eclipse, Dyson was crucial in designing the Eddington experiment with Arthur Eddington to test Albert Einstein's Theory of relativity.Wilson, Margaret (1951). Ninth Astronomer Royal. Cambridge, England: W.Heffer and Sons Limited. pp. 191–193. Starting months before the eclipse, stars were photographed and carefully charted, and during the total eclipse the same stars would be photographed and charted again. If Einstein's theory was correct then the light from the selected stars would be bent passing around the sun and show more deflection than Newtonian theory alone predicted. When the photographs from the eclipse were developed it became clear that Einstein's theory had accurately predicted the position of stars. This was one of the first experiments to confirm general relativity.
+
+Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.",0.5,local,"identify the correct statement: what is the concept of simultaneity in einstein's book, relativity? carefully.",3246078992
+501,Choose the correct answer: What is the Maxwell's Demon thought experiment? among the listed options.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an enhance in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an raise in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an boost in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.",C,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,choose the correct answer: what is the maxwell's demon thought experiment? among the listed options.,2037564986
+502,What is the interstellar medium (ISM)?,"The matter and radiation that exist in the space between the star systems in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar system, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.
+
+Interstellar medium
+The cyanide radical •CN has been identified in interstellar space. Cyanogen, , is used to measure the temperature of interstellar gas clouds.
+
+Astronomy 
+Beyond Earth, carbon monoxide is the second-most common diatomic molecule in the interstellar medium, after molecular hydrogen.  Because of its asymmetry, this polar molecule produces far brighter spectral lines than the hydrogen molecule, making CO much easier to detect.  Interstellar CO was first detected with radio telescopes in 1970. It is now the most commonly used tracer of molecular gas in general in the interstellar medium of galaxies, as molecular hydrogen can only be detected using ultraviolet light, which requires space telescopes. Carbon monoxide observations provide much of the information about the molecular clouds in which most stars form.",1.0,local,what is the interstellar medium (ism)?,3546350918
+503,Determine the correct option: What is the definition of an improper rotation?,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+Isaac Newton's rotating bucket argument (also known as Newton's bucket) is a thought experiment that was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.  It is one of five arguments from the ""properties, causes, and effects"" of ""true motion and rest"" that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by ""absolute rotation"", and do not pretend to address the question of ""rotation relative to what?"" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime.
+
+The next step is to use the definition of differentiability of f at g(a). This requires a term of the form  for some k. In the above equation, the correct k varies with h. Set  and the right hand side becomes . Applying the definition of the derivative gives:",0.5,local,determine the correct option: what is the definition of an improper rotation?,2114918337
+504,Which of the following is correct? Which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? among the listed options.,"Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Interstellar destruction mechanisms 
+There are 113 total proposed reactions leading to the destruction of . Of these, 39 were tabulated in extensive tables of the chemistry among C, N and O compounds. A review of interstellar ammonia cites the following reactions as the principal dissociation mechanisms:
+
+Weierstrass and Jordan definitions (epsilon–delta) of continuous functions
+Explicitly including the definition of the limit of a function, we obtain a self-contained definition: Given a function  as above and an element  of the domain ,  is said to be continuous at the point  when the following holds: For any positive real number  however small, there exists some positive real number  such that for all  in the domain of  with  the value of  satisfies
+
+Continuity at a point 
+The translation in the language of neighborhoods of the -definition of continuity leads to the following definition of the continuity at a point:",0.38461538461538464,local,which of the following is correct? which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? among the listed options.,4034649340
+505,Choose the correct answer: What was the aim of the Gravity Probe B (GP-B) mission? carefully.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,No match found.,0.0,live_api,choose the correct answer: what was the aim of the gravity probe b (gp-b) mission? carefully.,2198671012
+506,Select the most accurate option: What is the SI base unit of time and how is it defined? among the listed options.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.",0.4166666666666667,local,select the most accurate option: what is the si base unit of time and how is it defined? among the listed options.,1465257086
+507,Pick the best possible answer: What are permutation-inversion groups? among the listed options.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,No match found.,0.0,live_api,pick the best possible answer: what are permutation-inversion groups? among the listed options.,2491186446
+508,Determine the correct option: What is linear frame dragging? carefully.,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.0,live_api,determine the correct option: what is linear frame dragging? carefully.,3599815039
+509,"What is a ""coffee ring"" in physics?",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"The coffee ceremony is the traditional serving of coffee, usually after a big meal. It often involves the use of a jebena (ጀበና), a clay coffee pot in which the coffee is boiled. The preparer roasts the coffee beans in front of guests, then walks around wafting the smoke throughout the room so participants may sample the scent of coffee. Then the preparer grinds the coffee beans in a traditional tool called a . The coffee is put into the jebena, boiled with water, and then served in small cups called si'ni. Coffee is usually served with sugar, but is also served with salt in many parts of Ethiopia. In some parts of the country, niter kibbeh is added instead of sugar or salt.
+
+Ring modulator: A ring modulator produces a resonant, metallic sound by frequency mixing an instrument's audio signal with a carrier wave generated by the device's internal oscillator. The original sound wave is suppressed and replaced by a ring of inharmonic higher and lower pitches or sidebands. A notable use of ring modulation is the guitar in the Black Sabbath song ""Paranoid"".McNamee, David ""Hey, What's That Sound: Ring Modulators"", The Guardian, London, 9 November 2009.
+
+Of or relating to the atom, the smallest particle of a chemical element that retains its chemical properties
+ Atomic physics, the study of the atom
+ Atomic Age, also known as the ""Atomic Era""
+ Atomic scale, distances comparable to the dimensions of an atom
+ Atom (order theory), in mathematics
+ Atomic (coffee machine), a 1950s stovetop coffee machine
+ Atomic (cocktail), a champagne cocktail
+ Atomic (magazine), an Australian computing and technology magazine
+ Atomic Skis, an Austrian ski producer",1.0,local,"what is a ""coffee ring"" in physics?",2716728026
+510,Identify the correct statement: What are coherent turbulent structures? carefully.,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the procedures of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the techniques of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the techniques of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.",C,"A neutrino ( new-TREE-noh; denoted by the Greek letter ν) is an elementary particle that interacts  via the weak interaction and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is so small (-ino) that it was long thought to be zero. The rest mass of the neutrino is much smaller than that of the other known elementary particles (excluding massless particles).
+The weak force has a very short range, the gravitational interaction is extremely weak due to the very small mass of the neutrino, and neutrinos do not participate in the electromagnetic interaction or the strong interaction.
+Consequently, neutrinos typically pass through normal matter unimpeded and with no detectable effect.
+Weak interactions create neutrinos in one of three leptonic flavors: electron neutrino, νe; muon neutrino, νμ and tau neutrino, ντ. Each flavor is associated with the correspondingly named charged lepton. Although neutrinos were long believed to be massless, it is",0.0,live_api,identify the correct statement: what are coherent turbulent structures? carefully.,663783300
+511,Determine the correct option: What happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation?,It will change its internal state only if it is composed of a single substructure and has internal walls.,It will change its internal state only if it is composed of several submechanisms separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single submechanism.,D,No match found.,0.0,live_api,determine the correct option: what happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation?,1292711055
+512,Pick the best possible answer: What is the Carnot engine? from the following choices.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is an ideal heat engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real heat engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,B,"A Carnot heat engineIn French, Carnot uses machine à feu, which Thurston translates as heat-engine or steam-engine. In a footnote, Carnot distinguishes the steam-engine (machine à vapeur) from the heat-engine in general. (Carnot, 1824, p. 5 and Carnot, 1890, p. 43) is a theoretical heat engine that operates on the Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded by Benoît Paul Émile Clapeyron in 1834 and mathematically explored by Rudolf Clausius in 1857, work that led to the fundamental thermodynamic concept of entropy. The Carnot engine is the most efficient heat engine which is theoretically possible. The efficiency depends only upon the absolute temperatures of the hot and cold heat reservoirs between which it operates.
+
+where  is the efficiency of the real engine, and  is the efficiency of the Carnot engine working between the same two reservoirs at the temperatures  and . For the Carnot engine, the entire process is 'reversible', and Equation () is an equality. Hence, the efficiency of the real engine is always less than the ideal Carnot engine.
+
+The Carnot cycle when acting as a heat engine consists of the following steps:",0.5,local,pick the best possible answer: what is the carnot engine? from the following choices.,1184227380
+513,Choose the correct answer: Who was Giordano Bruno? based on the given context.,A German philosopher who supported the Keplerian concept that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic framework that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian concept that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican framework that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean concept that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Rudolf Joseph Lorenz Steiner (German: [ˈʃtaɪnɐ]; 27 or 25 February 1861 – 30 March 1925) was an Austrian New Age guru, philosopher, occultist, social reformer, architect, esotericist, and claimed clairvoyant. Steiner gained initial recognition at the end of the nineteenth century as a literary critic and published works including The Philosophy of Freedom. At the beginning of the twentieth century he founded an esoteric spiritual movement, anthroposophy, with roots in German idealist philosophy and theosophy. His teachings are influenced by (Christian) Gnosticism or neognosticism. Many of his ideas are pseudoscientific. He was also prone to pseudohistory.
+In the first, more philosophically oriented phase of this movement, Steiner attempted to find a synthesis between science and spirituality by developing what he termed ""spiritual science"", which he sought to apply the clarity of thinking characteristic of Western philosophy to spiritual questions, differentiating this approach from wh",0.1111111111111111,live_api,choose the correct answer: who was giordano bruno? based on the given context.,3066518847
+514,Pick the best possible answer: How many crystallographic point groups are there in three-dimensional space? from the following choices.,7,32,14,5,27,B,No match found.,0.0,live_api,pick the best possible answer: how many crystallographic point groups are there in three-dimensional space? from the following choices.,2999919769
+515,What is the main factor that determines the occurrence of each type of supernova?,The star's distance from Earth,The star's age,The star's temperature,The star's luminosity,The progenitor star's metallicity,E,"Supernova 1987A was the closest supernova to occur since the invention of the telescope. SNR 0509-67.5 is the remnant of an unusually energetic Type Ia supernova from about 400 years ago.
+
+In April 2003, the Supernova Legacy Survey observed a type Ia supernova, designated SNLS-03D3bb, in a galaxy approximately 4 billion light years away. According to astronomers at the University of Toronto and elsewhere, the observations of this supernova are best explained by assuming that it arose from a white dwarf that had grown to twice the mass of the Sun before exploding.
+
+Chemical properties 
+Each element has a specific set of chemical properties as a consequence of the number of electrons present in the neutral atom, which is Z (the atomic number). The configuration of these electrons follows from the principles of quantum mechanics. The number of electrons in each element's electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. Hence, it is the atomic number alone that determines the chemical properties of an element; and it is for this reason that an element can be defined as consisting of any mixture of atoms with a given atomic number.",0.75,local,what is the main factor that determines the occurrence of each type of supernova?,1546425258
+516,Select the most accurate option: What is the main focus of cryogenic and noble liquid detectors in dark matter experiments? based on the given context.,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.",0.375,local,select the most accurate option: what is the main focus of cryogenic and noble liquid detectors in dark matter experiments? based on the given context.,2554782902
+517,Choose the correct answer: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.",0.2857142857142857,local,choose the correct answer: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,4061823486
+518,Determine the correct option: What is the identity operation in symmetry groups? based on the given context.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.5,local,determine the correct option: what is the identity operation in symmetry groups? based on the given context.,4106129166
+519,Choose the correct answer: What is the significance of regularization in terms of renormalization problems in physics? among the listed options.,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a concept that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a framework below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a structure under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a framework below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.",0.25,local,choose the correct answer: what is the significance of regularization in terms of renormalization problems in physics? among the listed options.,3258207744
+520,Choose the correct answer: What is the main sequence in astronomy? among the listed options.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar mechanism.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"The cutaway does not necessarily contribute any dramatic content of its own, but is used to help the editor assemble a longer sequence. For that reason, editors choose cutaways related to the main action, such as another action or object in the same location.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.5555555555555556,local,choose the correct answer: what is the main sequence in astronomy? among the listed options.,3340838752
+521,Identify the correct statement: What is spatial dispersion? based on the given context.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in frameworks, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in structures, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in frameworks, commonly seen in optics and electronics.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:",0.5,local,identify the correct statement: what is spatial dispersion? based on the given context.,3219066250
+522,Identify the correct statement: What is the 'reactive Leidenfrost effect' observed in non-volatile materials?,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,identify the correct statement: what is the 'reactive leidenfrost effect' observed in non-volatile materials?,1018789548
+523,Identify the correct statement: What is a trophic level in an ecological pyramid? carefully.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecomechanism.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecomechanism.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""",0.5,local,identify the correct statement: what is a trophic level in an ecological pyramid? carefully.,2484686332
+524,Choose the correct answer: What is a light-year? from the following choices.,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+On 12 July 1970, when Wood added cellos to a Lynne-penned song intended to be a Move B-side, the new concept became a reality and ""10538 Overture"" became the first Electric Light Orchestra song. The original plan was to end the Move following the release of the Looking On album at the end of 1970, crossing over to the new unit in the new year. But to help finance the fledgling band, one further Move album, Message from the Country, was recorded during the lengthy ELO recordings and released in mid-1971. The resulting debut album, The Electric Light Orchestra, was released in December 1971. Only the trio of Wood, Lynne and Bevan played on all songs, with Bill Hunt supplying the French Horn parts and Steve Woolam playing violin. It was released in the United States in March 1972 as No Answer. The name was chosen after a U.S. record company secretary had tried to ring the UK company to get the name of the album. They were unavailable so she left a note reading ""No answer"".Electric Light Orchestra's No Answer. snopes.com. Retrieved 31 January 2011. ""10538 Overture"" became a UK top-ten hit. With both bands' albums in the stores simultaneously, the Move and ELO both appeared on television during this period.
+
+The Apple III is the first Apple product to allow the user to choose both a screen font and a keyboard layout: either QWERTY or Dvorak. These choices cannot be changed while programs were running. This was unlike the Apple IIc, which has a keyboard switch directly above the keyboard, allowing the user to switch on the fly.",1.0,local,choose the correct answer: what is a light-year? from the following choices.,3796695379
+525,Which of the following is correct? What did Arthur Eddington discover about two of Einstein's types of gravitational waves? from the following choices.,"Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could only be made to propagate at the speed of gravity by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could only be made to propagate at the speed of sound by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could not be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of light by choosing appropriate coordinates.",C,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+During World War I, Eddington was secretary of the Royal Astronomical Society, which meant he was the first to receive a series of letters and papers from Willem de Sitter regarding Einstein's theory of general relativity. Eddington was not only one of the few English astronomers with the mathematical skills to understand general relativity, but due to his internationalist and pacifist views inspired by his Quaker religious beliefs, was one of the few who was interested in pursuing a theory developed by a German physicist. He quickly became the chief supporter and expositor of relativity in Britain. He and Astronomer Royal Sir Frank Dyson organized two expeditions to observe a solar eclipse in 1919 to make the first empirical test of Einstein's theory: the measurement of the deflection of starlight by the Sun's gravitational field. In fact, Dyson's argument for the indispensability of Eddington's expertise in this test was what prevented Eddington from eventually having to enter military service.
+
+Gravitational waves
+Gravitational waves are ripples in the curvature of spacetime that propagate as waves at the speed of light, generated in certain gravitational interactions that propagate outward from their source. Gravitational-wave astronomy is an emerging branch of observational astronomy which aims to use gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs, neutron stars, and black holes; and events such as supernovae, and the formation of the early universe shortly after the Big Bang.",0.5333333333333333,local,which of the following is correct? what did arthur eddington discover about two of einstein's types of gravitational waves? from the following choices.,3831528478
+526,Identify the correct statement: What is the distinction between natural convection and forced convection? from the following choices.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,No match found.,0.0,live_api,identify the correct statement: what is the distinction between natural convection and forced convection? from the following choices.,4116252252
+527,What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors?,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"Because the hexagons in the T and O sheets are slightly different in size, the sheets are slightly distorted when they bond into a TOT layer. This breaks the hexagonal symmetry and reduces it to monoclinic symmetry. However, the original hexahedral symmetry is discernible in the pseudohexagonal character of biotite crystals.
+
+Stable magnetic monopoles are a problem for Grand Unified Theories, which propose that at high temperatures (such as in the early universe), the electromagnetic force, strong, and weak nuclear forces are not actually fundamental forces but arise due to spontaneous symmetry breaking from a single gauge theory. These theories predict a number of heavy, stable particles that have not been observed in nature. The most notorious is the magnetic monopole, a kind of stable, heavy ""charge"" of magnetic field.
+
+In quantum phase transitions,  the temperature is set to absolute zero, and the non-thermal control parameter, such as pressure or magnetic field,  causes the phase transitions when order is destroyed by quantum fluctuations originating from the Heisenberg uncertainty principle. Here, the different quantum phases of the system refer to distinct ground states of the Hamiltonian matrix.  Understanding the behavior of quantum phase transition is important in the difficult tasks of explaining the properties of rare-earth magnetic insulators, high-temperature superconductors, and other substances.",1.0,local,what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors?,731299298
+528,Determine the correct option: What is reciprocal length or inverse length? among the listed options.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).
+
+Options
+Options are octet strings of varying length. This is called Type–length–value encoding. The first octet is the option code, the second octet is the number of following octets and the remaining octets are code dependent.
+For example, the DHCP message-type option for an offer would appear as 0x35, 0x01, 0x02, where 0x35 is code 53 for ""DHCP message type"", 0x01 means one octet follows and 0x02 is the value of ""offer"".",0.6,local,determine the correct option: what is reciprocal length or inverse length? among the listed options.,249894815
+529,Identify the correct statement: What is reciprocal length or inverse length? from the following choices.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.4444444444444444,local,identify the correct statement: what is reciprocal length or inverse length? from the following choices.,903317320
+530,Pick the best possible answer: What is the variation between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? carefully.,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,No match found.,0.0,live_api,pick the best possible answer: what is the variation between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? carefully.,2544140593
+531,Pick the best possible answer: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? among the listed options.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,No match found.,0.0,live_api,pick the best possible answer: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? among the listed options.,1782667140
+532,Pick the best possible answer: What happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,"The excess base metal will often solidify, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often crystallize-out, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often dissolve, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often liquefy, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often evaporate, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.",B,No match found.,0.0,live_api,pick the best possible answer: what happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,1286292305
+533,Select the most accurate option: What is the 'reactive Leidenfrost effect' observed in non-volatile materials?,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,select the most accurate option: what is the 'reactive leidenfrost effect' observed in non-volatile materials?,3767876016
+534,Select the most accurate option: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? among the listed options.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,select the most accurate option: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? among the listed options.,1125752147
+535,Choose the correct answer: What is the purpose of the proximity-focusing design in a RICH detector? carefully.,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.",0.3,local,choose the correct answer: what is the purpose of the proximity-focusing design in a rich detector? carefully.,3674990098
+536,Which of the following is correct? What is the relationship between interstellar and cometary chemistry? among the listed options.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,"Interstellar destruction mechanisms 
+There are 113 total proposed reactions leading to the destruction of . Of these, 39 were tabulated in extensive tables of the chemistry among C, N and O compounds. A review of interstellar ammonia cites the following reactions as the principal dissociation mechanisms:
+
+The events of SL9's interaction with Jupiter greatly highlighted Jupiter's role in protecting the inner planets from both interstellar and in-system debris by acting as a ""cosmic vacuum cleaner"" for the Solar System (Jupiter barrier). The planet's strong gravitational influence attracts many small comets and asteroids and the rate of cometary impacts on Jupiter is thought to be between 2,000 and 8,000 times higher than the rate on Earth.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.8181818181818182,local,which of the following is correct? what is the relationship between interstellar and cometary chemistry? among the listed options.,654215675
+537,Determine the correct option: What is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? carefully.,Blueshifting,Redshifting,Reddening,Whitening,Yellowing,C,The following scientific events occurred in 2023.,0.0,live_api,determine the correct option: what is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? carefully.,464432982
+538,What is the origin of the permanent moment in paramagnetism?,The permanent moment is generally due to the spin of unpaired electrons in atomic or molecular electron orbitals.,The permanent moment is due to the alignment of dipoles perpendicular to the applied field.,"The permanent moment is due to the torque provided on the magnetic moments by an applied field, which tries to align the dipoles perpendicular to the applied field.",The permanent moment is due to the quantum-mechanical properties of spin and angular momentum.,The permanent moment is due to the interaction of dipoles with one another and are randomly oriented in the absence of an external field due to thermal agitation.,A,"The permanent dipole moment  of an atom in a non-degenerate state (see Degenerate energy level) is given as the expectation (average) value of the dipole operator,
+
+where  is the length of the moment arm, a line dropped perpendicularly from the origin onto the path of the particle. It is this definition, , to which the term moment of momentum refers.
+
+where
+  is the moment of inertia for a point mass,
+  is the orbital angular velocity of the particle about the origin,
+  is the position vector of the particle relative to the origin, and ,
+  is the linear velocity of the particle relative to the origin, and
+  is the mass of the particle.",0.75,local,what is the origin of the permanent moment in paramagnetism?,3825600217
+539,Select the most accurate option: What are permutation-inversion groups? based on the given context.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.,0.0,live_api,select the most accurate option: what are permutation-inversion groups? based on the given context.,2371384115
+540,Select the most accurate option: What is the Penrose process? carefully.,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.",0.2857142857142857,local,select the most accurate option: what is the penrose process? carefully.,3075031244
+541,Select the most accurate option: What is organography? among the listed options.,Organography is the study of the stem and root of plants.,Organography is the scientific description of the structure and function of the organs of living things.,"Organography is the study of the development of organs from the ""growing points"" or apical meristems.",Organography is the study of the commonality of development between foliage leaves and floral leaves.,Organography is the study of the relationship between different organs and different functions in plants.,B,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+The Condorcet rule is used (sometimes) in decision-making. The voters or elected representatives cast their preferences on one, some, or all options, 1,2,3,4... as in PR-STV or QBS. In the analysis, option A is compared to option B, and if A is more popular than B, then A wins this pairing. Next, A is compared with option C, then D, and so on. Likewise, B is compared with C, D, etc. The option which wins the most pairings, (if there is one), is the Condorcet winner.→",0.5,local,select the most accurate option: what is organography? among the listed options.,1589885591
+542,Choose the correct answer: What is the American Petroleum Institute (API) gravity? among the listed options.,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,No match found.,0.0,live_api,choose the correct answer: what is the american petroleum institute (api) gravity? among the listed options.,84722910
+543,Choose the correct answer: What is the identity operation in symmetry groups? from the following choices.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"Although the semi-localized textbook σ-π separation model describes the bonding of allene using a pair of localized orthogonal π orbitals, the full molecular orbital description of the bonding is more subtle.  The symmetry-correct doubly-degenerate HOMOs of allene (adapted to the D2d point group) can either be represented by a pair of orthogonal MOs or as twisted helical linear combinations of these orthogonal MOs.  The symmetry of the system and the degeneracy of these orbitals imply that both descriptions are correct (in the same way that there are infinitely many ways to depict the doubly-degenerate HOMOs and LUMOs of benzene that correspond to different choices of eigenfunctions in a two-dimensional eigenspace).  However, this degeneracy is lifted in substituted allenes, and the helical picture becomes the only symmetry-correct description for the HOMO and HOMO–1 of the C2-symmetric . This qualitative MO description extends to higher odd-carbon cumulenes (e.g., 1,2,3,4-pentatetraene).
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.",0.7777777777777778,local,choose the correct answer: what is the identity operation in symmetry groups? from the following choices.,3875305842
+544,Which of the following is correct? What is the Peierls bracket in canonical quantization?,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization procedure.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization procedure.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization procedure that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization technique.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization technique.,C,"The Bohr–Sommerfeld quantization conditions lead to questions in modern mathematics. Consistent semiclassical quantization condition requires a certain type of structure on the phase space, which places topological limitations on the types of symplectic manifolds which can be quantized. In particular, the symplectic form should be the curvature form of a connection of a Hermitian line bundle, which is called a prequantization.",0.2857142857142857,local,which of the following is correct? what is the peierls bracket in canonical quantization?,3261988732
+545,"Which of the following is correct? Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.","MOND is a framework that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that enhances the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a framework that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a concept that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a concept that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"which of the following is correct? which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.",2558558155
+546,Choose the correct answer: What is a planetary structure? based on the given context.,A mechanism of planets that are all located in the same solar mechanism.,A mechanism of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star structure.,A framework of planets that are all located in the same galaxy.,A framework of planets that are all made of gas.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.875,local,choose the correct answer: what is a planetary structure? based on the given context.,1494689547
+547,Determine the correct option: What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? carefully.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,No match found.,0.0,live_api,determine the correct option: what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? carefully.,3430346200
+548,Who was the first person to describe the pulmonary circulation system?,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.
+
+The aortic arch loops over the left pulmonary artery and the bifurcation of the pulmonary trunk, to which it remains connected by the ligamentum arteriosum, a remnant of the fetal circulation that is obliterated a few days after birth. In addition to these blood vessels, the aortic arch crosses the left main bronchus. Between the aortic arch and the pulmonary trunk is a network of autonomic nerve fibers, the cardiac plexus or aortic plexus. The left vagus nerve, which passes anterior to the aortic arch, gives off a major branch, the recurrent laryngeal nerve, which loops under the aortic arch just lateral to the ligamentum arteriosum. It then runs back to the neck.",0.42857142857142855,local,who was the first person to describe the pulmonary circulation system?,2041423751
+549,Determine the correct option: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,No match found.,0.0,live_api,determine the correct option: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,2394848367
+550,Identify the correct statement: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level? based on the given context.,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,identify the correct statement: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level? based on the given context.,1599819197
+551,Which of the following is correct? What is the information loss paradox in black holes?,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.
+
+Stars have been observed to get torn apart by tidal forces in the immediate vicinity of supermassive black holes in galaxy nuclei, in what is known as a tidal disruption event (TDE). Some of the material from the disrupted star forms an accretion disk around the black hole, which emits observable electromagnetic radiation.
+
+Black holes have been portrayed in science fiction in a variety of ways. Even before the advent of the term itself, objects with characteristics of black holes appeared in stories such as the 1928 novel The Skylark of Space with its ""black Sun"" and the ""hole in space"" in the 1935 short story Starship Invincible. As black holes grew to public recognition in the 1960s and 1970s, they began to be featured in films as well as novels, such as Disney's The Black Hole. Black holes have also been used in works of the 21st century, such as Christopher Nolan's science fiction epic Interstellar.",0.75,local,which of the following is correct? what is the information loss paradox in black holes?,2726877329
+552,Select the most accurate option: What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? among the listed options.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,No match found.,0.0,live_api,select the most accurate option: what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? among the listed options.,1310626219
+553,Determine the correct option: What is the purpose of the proximity-focusing design in a RICH detector? from the following choices.,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+Lens design: Lens - In optical engineering, Euclidean geometry is critical in the design of lenses, where precise geometric shapes determine the focusing properties. Geometric optics analyzes the focusing of light by lenses and mirrors.
+alt=Types of lenses|center|thumb|450x450px|Types of Lenses
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:",0.6363636363636364,local,determine the correct option: what is the purpose of the proximity-focusing design in a rich detector? from the following choices.,637073454
+554,What is indirect photophoresis?,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,"See also
+Crookes tube
+Marangoni effect
+Nichols radiometer
+Photophoresis
+Solar energy
+Solar wind
+Thermophoresis",0.5,local,what is indirect photophoresis?,2721999317
+555,Identify the correct statement: What is a magnetic monopole in particle physics? among the listed options.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.",0.4,local,identify the correct statement: what is a magnetic monopole in particle physics? among the listed options.,636197176
+556,Pick the best possible answer: What is spatial dispersion? carefully.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in frameworks, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in frameworks, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in mechanisms, commonly seen in optics and electronics.",D,"Biostatistics (sometimes referred to as biometry) is a branch of statistics that applies statistical methods to a wide range of topics in the biological sciences, with a focus on clinical medicine and public health applications. 
+The field encompasses the design of experiments, the collection and analysis of experimental and observational data, and the interpretation of the results.
+It is closely related to medical statistics.",0.0,live_api,pick the best possible answer: what is spatial dispersion? carefully.,808968078
+557,Which of the following is correct? What is a regular polytope? based on the given context.,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"The following problems are undecidable for arbitrarily given context-free grammars A and B:
+Equivalence: is ?
+Disjointness: is  ? However, the intersection of a context-free language and a regular language is context-free, hence the variant of the problem where B is a regular grammar is decidable (see ""Emptiness"" below).
+Containment: is  ? Again, the variant of the problem where B is a regular grammar is decidable, while that where A is regular is generally not.
+Universality: is ?
+Regularity: is  a regular language?
+Ambiguity: is every grammar for  ambiguous?
+
+Being in a lower or higher level of the Chomsky hierarchy 
+Using Greibach's theorem, it can be shown that the two following problems are undecidable:
+ Given a context-sensitive grammar, does it describe a context-free language?
+ Given a context-free grammar, does it describe a regular language?.
+
+In general, the facets of a polytope's dual will be the topological duals of the polytope's vertex figures. For the polar reciprocals of the regular and uniform polytopes, the dual facets will be polar reciprocals of the original's vertex figure. For example, in four dimensions, the vertex figure of the 600-cell is the icosahedron;  the dual of the 600-cell is the 120-cell, whose facets are dodecahedra, which are the dual of the icosahedron.",0.75,local,which of the following is correct? what is a regular polytope? based on the given context.,3397240505
+558,Identify the correct statement: What is the significance of the redshift-distance relationship in determining the expansion history of the universe? based on the given context.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models based on the Big Bang concept explain a broad range of phenomena,  including the abundance of light elements, the cosmic microwave background (CMB) radiation, the redshift of galaxies and the large-scale structure of the Universe. The uniformity of the universe, known as the horizon and flatness problems, is explained through cosmic inflation: a phase of accelerated expansion during the earliest stages. Detailed measurements of the expansion rate of the universe place the initial singularity at an estimated  billion years ago, which is considered the age of the universe. A wide range of empirical evidence strongly favors the Big Bang event, which is now widely accepted.: ""At the same time that observations tipped the balance definitely in favor of the relativistic big-bang theory, ...""
+
+Measurements of the redshift–magnitude relation for type Ia supernovae indicate that the expansion of the universe has been accelerating since the universe was about half its present age. To explain this acceleration, cosmological models require that much of the energy in the universe consists of a component with large negative pressure, dubbed ""dark energy"".",0.35714285714285715,local,identify the correct statement: what is the significance of the redshift-distance relationship in determining the expansion history of the universe? based on the given context.,214689917
+559,"Select the most accurate option: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion?","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)
+
+In Newtonian mechanics, the acceleration of a mass arises from forces acting on it, with its net acceleration being a result of the net force acting on it. By Newton's second law, the magnitude of the net acceleration will be proportional to the magnitude of the net force acting on the object and inversely proportional to the mass of the object, while the direction of the net acceleration will be the same as the direction of the net force.",0.4375,local,"select the most accurate option: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion?",2551193326
+560,Identify the correct statement: What is the function of the fibrous cardiac skeleton? among the listed options.,The fibrous cardiac skeleton is a structure of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.",0.3,local,identify the correct statement: what is the function of the fibrous cardiac skeleton? among the listed options.,1660239703
+561,Which of the following is correct? What is Martin Heidegger's view on the relationship between time and human existence? based on the given context.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Martin Heidegger lectured extensively on Anaximander, and delivered a lecture entitled ""Anaximander's Saying"" which was subsequently included in Off the Beaten Track. The lecture examines the ontological difference and the oblivion of Being or Dasein in the context of the Anaximander fragment.Martin Heidegger, Off the Beaten Track (Cambridge & New York: Cambridge University Press, 2002). Heidegger's lecture is, in turn, an important influence on the French philosopher Jacques Derrida.Cf. Jacques Derrida, Margins of Philosophy (Chicago: University of Chicago Press, 1982), pp. 66–7; Derrida, ""Geschlecht II: Heidegger's Hand,"" in John Sallis (ed.), Deconstruction and Philosophy (Chicago & London: University of Chicago Press, 1987), pp. 181–2; Derrida, Given Time: I. Counterfeit Money (Chicago & London: University of Chicago Press, 1992), p. 159, n. 28.
+
+Martin Heidegger is the best known of Husserl's students, the one whom Husserl chose as his successor at Freiburg. Heidegger's magnum opus Being and Time was dedicated to Husserl. They shared their thoughts and worked alongside each other for over a decade at the University of Freiburg, Heidegger being Husserl's assistant during 1920–1923.Kockelmans, ""Introduction [Martin Heidegger]"" 267–276, 273, in Kockelmans, editor, Phenomenology (1967). Heidegger's early work followed his teacher, but with time he began to develop new insights distinctively variant. Husserl became increasingly critical of Heidegger's work, especially in 1929, and included pointed criticism of Heidegger in lectures he gave during 1931.See above subsection ""Heidegger and the Nazi era"". Heidegger, while acknowledging his debt to Husserl, followed a political position offensive and harmful to Husserl after the Nazis came to power in 1933, Husserl being of Jewish origin and Heidegger infamously being then a Nazi proponent.The multivalent, including the ""horrifying"", aspects of Heidegger in a parallel context are recounted in Peter Eli Gordon, Rosensweig and Heidegger: Between Judaism and German Philosophy (University of California 2003) at 13–14 (Heidegger and Rosensweig's early ""kinship"" with him). ""In 1929, however, one could still read Heidegger's philosophy without being drawn into a controversy concerning its relationship to National Socialism, antisemitism, and the like. The German philosophical world as a whole still cloaked itself in a mantle of relative innocence."" Gordon (2003) at 303–304. ""Rosensweig's work represents the culmination of what is often called the German Jewish Tradition."" Gordon, ""Preface"" (2003) at xix. Academic discussion of Husserl and Heidegger is extensive.
+
+In continental philosophy, the school of phenomenology studied the immediate experience of art. For example, it examined how artworks can depict unreal objects, how imagination is involved in the process, and how art can reveal features of reality. This tradition is closely related to existentialist aesthetics, which views artworks as expressions of human freedom that can authentically portray central aspects of the human condition. The philosophy of Martin Heidegger (1889–1976) influenced both traditions. He criticized the focus on disinterested pleasure found in modern philosophy of art, arguing that artworks can reveal truths about human existence and provide new perspectives of understanding. Heidegger's student Hans-Georg Gadamer (1900–2002) further investigated the relation between art and truth, examining aesthetic experience and traditional theories through phenomenological analysis and hermeneutic interpretation.",0.7333333333333333,local,which of the following is correct? what is martin heidegger's view on the relationship between time and human existence? based on the given context.,2054249895
+562,Determine the correct option: What is radiosity in radiometry? among the listed options.,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,No match found.,0.0,live_api,determine the correct option: what is radiosity in radiometry? among the listed options.,2679181648
+563,Which of the following is correct? What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? carefully.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,This glossary of engineering terms is a list of definitions about the major concepts of engineering. Please see the bottom of the page for glossaries of specific fields of engineering.,0.0,live_api,which of the following is correct? what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? carefully.,2937692370
+564,Which of the following is correct? What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation? among the listed options.,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+where  corresponds to no parity change or parity change, respectively. The special case of a transition between isobaric analogue states, where the structure of the final state is very similar to the structure of the initial state, is referred to as ""superallowed"" for beta decay, and proceeds very quickly. The following table lists the Δ and Δ values for the first few values of :
+
+Energy levels 
+The molecular term symbol is a shorthand expression of the angular momenta that characterize the electronic quantum states of a diatomic molecule, which are also eigenstates of the electronic molecular Hamiltonian. It is also convenient, and common, to represent a diatomic molecule as two-point masses connected by a massless spring. The energies involved in the various motions of the molecule can then be broken down into three categories: the translational, rotational, and vibrational energies. The theoretical study of the rotational energy levels of the diatomic molecules can be described using the below description of the rotational energy levels. While the study of vibrational energy level of the diatomic molecules can be described using the harmonic oscillator approximation or using the quantum vibrational interaction potentials. These potentials give more accurate energy levels because they take multiple vibrational effects into account.",0.5,local,which of the following is correct? what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation? among the listed options.,1795285217
+565,What is the result of the collapse of a cavitation bubble?,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a decrease in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp increase in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+The process of bubble generation, and the subsequent growth and collapse of the cavitation bubbles, results in very high energy densities and in very high local temperatures and local pressures at the surface of the bubbles for a very short time.  The overall liquid medium environment, therefore, remains at ambient conditions.  When uncontrolled, cavitation is damaging; by controlling the flow of the cavitation, however, the power can be harnessed and non-destructive.  Controlled cavitation can be used to enhance chemical reactions or propagate certain unexpected reactions because free radicals are generated in the process due to disassociation of vapors trapped in the cavitating bubbles.",1.0,local,what is the result of the collapse of a cavitation bubble?,2456368736
+566,Choose the correct answer: What is a uniform tiling in the hyperbolic plane?,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,"All regular polygons, {a}.
+ Regular tetrahedron: {3,3}
+ In general, all regular n-simplexes, {3,3,...,3}
+ The regular 24-cell in 4 dimensions, {3,4,3}.
+ The great 120-cell {5,5/2,5} and the grand stellated 120-cell {5/2,5,5/2}
+The self-dual (infinite) regular Euclidean honeycombs are:
+ Apeirogon: {∞}
+ Square tiling: {4,4}
+ Cubic honeycomb: {4,3,4}
+ In general, all regular n-dimensional Euclidean hypercubic honeycombs: {4,3,...,3,4}.
+The self-dual (infinite) regular hyperbolic honeycombs are:
+ Compact hyperbolic tilings: {5,5}, {6,6}, ... {p,p}.
+ Paracompact hyperbolic tiling: {∞,∞}
+ Compact hyperbolic honeycombs: {3,5,3}, {5,3,5}, and {5,3,3,5}
+ Paracompact hyperbolic honeycombs: {3,6,3}, {6,3,6}, {4,4,4}, and {3,3,4,3,3}
+
+In the hyperbolic case, the Hartman–Grobman theorem gives the conditions for the existence of a continuous function that maps the neighborhood of the fixed point of the map to the linear map J · x. The hyperbolic case is also structurally stable.  Small changes in the vector field will only produce small changes in the Poincaré map and these small changes will reflect in small changes in the position of the eigenvalues of J in the complex plane, implying that the map is still hyperbolic.
+
+The total differential of u is
+, and similarly for v.
+Then the image  is a linear transformation, fixing the origin, and expressible as the action of a complex number of a particular type. When (dx, dy) is also interpreted as that type of complex number, the action is of complex multiplication in the appropriate complex number plane. As such, there is a type of angle (Euclidean, hyperbolic, or slope) that is preserved in such a multiplication. Due to Df being invertible, the type of complex number is uniform over the surface. Consequently, a surface deformation or diffeomorphism of surfaces has the conformal property of preserving (the appropriate type of) angles.",0.5714285714285714,local,choose the correct answer: what is a uniform tiling in the hyperbolic plane?,499654367
+567,Select the most accurate option: What is the definition of anatomy? among the listed options.,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+The classification of birds is a contentious issue. Sibley and Ahlquist's Phylogeny and Classification of Birds (1990) is a landmark work on the subject. Most evidence seems to suggest the assignment of orders is accurate, but scientists disagree about the relationships among the orders themselves; evidence from modern bird anatomy, fossils and DNA have all been brought to bear on the problem, but no strong consensus has emerged. Fossil and molecular evidence from the 2010s is providing an increasingly clear picture of the evolution of modern bird orders.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.",0.7777777777777778,local,select the most accurate option: what is the definition of anatomy? among the listed options.,2968156165
+568,Determine the correct option: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? from the following choices.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is significant for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is essential for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,determine the correct option: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? from the following choices.,2640484791
+569,Identify the correct statement: What is the relationship between interstellar and cometary chemistry? among the listed options.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,No match found.,0.0,live_api,identify the correct statement: what is the relationship between interstellar and cometary chemistry? among the listed options.,3754447953
+570,Select the most accurate option: What is emissivity? carefully.,Emissivity is a measure of how well a surface resists deformation under stress.,Emissivity is a measure of how well a surface conducts heat.,Emissivity is a measure of how well a surface absorbs and emits thermal radiation.,Emissivity is a measure of how well a surface reflects visible light.,Emissivity is a measure of how well a surface absorbs and emits sound waves.,C,"Google Search (also known simply as Google or google.com) is a search engine operated by Google.  It allows users to search or ask for information by entering keywords or phrases on a website page or in an installed application program. Google Search uses algorithms to analyze and rank websites based on their relevance to the query and uses generative artificial intelligence to respond to queries with non-search responses. Google Search is the most-visited website in the world. As of 2025, Google Search has a 90% share of the global search engine market. Approximately 24.1% of Google's monthly global traffic comes from the United States, 5.6% from India, 5.5% from Japan, 4.8% from Brazil, and 3.7% from the United Kingdom according to data provided by Similarweb. The same source reports that 58% of users are male and 42% are female.
+At the top of the presented search results is often a ""Sponsored result"" section reflecting results sponsored by advertising revenue. Many search results ar",0.16666666666666666,live_api,select the most accurate option: what is emissivity? carefully.,2577573824
+571,Pick the best possible answer: What is a regular polytope? based on the given context.,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.
+
+The following problems are undecidable for arbitrarily given context-free grammars A and B:
+Equivalence: is ?
+Disjointness: is  ? However, the intersection of a context-free language and a regular language is context-free, hence the variant of the problem where B is a regular grammar is decidable (see ""Emptiness"" below).
+Containment: is  ? Again, the variant of the problem where B is a regular grammar is decidable, while that where A is regular is generally not.
+Universality: is ?
+Regularity: is  a regular language?
+Ambiguity: is every grammar for  ambiguous?",0.4444444444444444,local,pick the best possible answer: what is a regular polytope? based on the given context.,2587310933
+572,Select the most accurate option: What did Newton adopt after his correspondence with Hooke in 1679-1680? carefully.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,select the most accurate option: what did newton adopt after his correspondence with hooke in 1679-1680? carefully.,833405873
+573,Pick the best possible answer: What is the purpose of the proximity-focusing design in a RICH detector? among the listed options.,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"In American television in 2018, notable events included television show finales, cancellations, and information about controversies and carriage disputes.",0.0,live_api,pick the best possible answer: what is the purpose of the proximity-focusing design in a rich detector? among the listed options.,1883893698
+574,Which of the following is correct? What is the distinction between active and passive transport in cells?,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"CSF is produced by the choroid plexus in two steps. Firstly, a filtered form of plasma moves from fenestrated capillaries in the choroid plexus into an interstitial space, with movement guided by a difference in pressure between the blood in the capillaries and the interstitial fluid. This fluid then needs to pass through the epithelium cells lining the choroid plexus into the ventricles, an active process requiring the transport of sodium, potassium and chloride that draws water into CSF by creating osmotic pressure. Unlike blood passing from the capillaries into the choroid plexus, the epithelial cells lining the choroid plexus contain tight junctions between cells, which act to prevent most substances flowing freely into CSF. Cilia on the apical surfaces of the ependymal cells beat to help transport the CSF.
+
+Active and passive citizenship
+While the French Revolution provided rights to a larger portion of the population, there remained a distinction between those who obtained the political rights in the Declaration of the Rights of Man and of the Citizen and those who did not. Those who were deemed to hold these political rights were called active citizens. Active citizenship was granted to men who were French, at least 25 years old, paid taxes equal to three days work, and could not be defined as servants. This meant that at the time of the declaration, only male property owners held these rights. The deputies in the National Assembly believed that only those who held tangible interests in the nation could make informed political decisions. This distinction directly affects articles 6, 12, 14, and 15 of the Declaration of the Rights of Man and of the Citizen, as each of these rights is related to the right to vote and to participate actively in the government. With the decree of 29 October 1789, the term active citizen became embedded in French politics.
+
+Similarly, Emanuel argues that there are four major arguments presented by opponents of euthanasia: a) not all deaths are painful; b) alternatives, such as cessation of active treatment, combined with the use of effective pain relief, are available; c) the distinction between active and passive euthanasia is morally significant; and d) legalising euthanasia will place society on a slippery slope, which will lead to unacceptable consequences. In fact, in Oregon, in 2013, pain was not among the top five end-of-life concerns of terminally-ill people who sought euthanasia.",0.7777777777777778,local,which of the following is correct? what is the distinction between active and passive transport in cells?,1575174755
+575,Choose the correct answer: What is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or Copernican principles that can be used to address specific issues in the Lambda-CDM model and distinguish between current models and other possible models? from the following choices.,"The Copernican principle, which proposes that Earth, the Solar structure, and the Milky Way are not at the centre of the universe, but instead, the universe is expanding equally in all directions. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","Inhomogeneous cosmology, which states that the universe is entirely homogeneous and isotropic, directly proportional to the density of matter and radiation. This model proposes that everything in the universe is completely uniform, but it does not match observations.","Inhomogeneous cosmology, which models the universe as an extremely large, low-density void, instead of using the concept of dark energy. According to the model, this principle can match the observed accelerating universe and cosmological constant, but it contradicts the Copernican principle.","The cosmological principle, which proposes that Earth, the Solar structure, and the Milky Way are at the centre of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","The principle of dark energy, which proposes that a new form of energy, not previously detected, is responsible for the acceleration of the expansion of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.",C,"Physics without the principle
+The standard model of cosmology, the Lambda-CDM model, assumes the Copernican principle and the more general cosmological principle. Some cosmologists and theoretical physicists have created models without the cosmological or Copernican principles to constrain the values of observational results, to address specific known issues in the Lambda-CDM model, and to propose tests to distinguish between current models and other possible models.",0.625,local,choose the correct answer: what is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or copernican principles that can be used to address specific issues in the lambda-cdm model and distinguish between current models and other possible models? from the following choices.,397949710
+576,Pick the best possible answer: What is the fate of a carbocation formed in crystalline naphthalene? among the listed options.,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,No match found.,0.0,live_api,pick the best possible answer: what is the fate of a carbocation formed in crystalline naphthalene? among the listed options.,3049710289
+577,"Choose the correct answer: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? among the listed options.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The concept of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.5,local,"choose the correct answer: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? among the listed options.",3393194155
+578,"Select the most accurate option: Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields? among the listed options.","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,No match found.,0.0,live_api,"select the most accurate option: which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields? among the listed options.",4102801973
+579,"Pick the best possible answer: What is the reason behind the designation of Class L dwarfs, and what is their color and composition? carefully.","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,No match found.,0.0,live_api,"pick the best possible answer: what is the reason behind the designation of class l dwarfs, and what is their color and composition? carefully.",1164715236
+580,Identify the correct statement: What is the spin quantum number?,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+There is another quantity of angular momentum, called the orbital angular momentum (azimuthal quantum number ), that comes in increments of , which represent the angular moment due to quarks orbiting around each other. The total angular momentum (total angular momentum quantum number J) of a particle is therefore the combination of intrinsic angular momentum (spin) and orbital angular momentum. It can take any value from  to , in increments of 1.
++ Baryon angular momentum quantum numbers for  Spin, S Orbital angular momentum, L Total angular momentum, J Parity, P Condensed notation, JP  0    +  + 1  ,   −  −, − 2  ,   +  +, + 3  ,   −  −, −  0    +  + 1  , ,   −  −, −, − 2  , , ,   +  +, +, +, + 3  , , ,   −  −, −, −, −",0.5,local,identify the correct statement: what is the spin quantum number?,3851391748
+581,What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies?,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies?,1478353581
+582,Determine the correct option: Which of the following statements accurately describes the origin and significance of the triskeles symbol?,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,"Ammianus' work contains a detailed description of the earthquake and tsunami of 365 in Alexandria, which devastated the metropolis and the shores of the eastern Mediterranean on 21 July 365. His report describes accurately the characteristic sequence of earthquake, retreat of the sea, and sudden incoming giant wave.
+
+When b = 0, the eigenvalues of A determine the structure of the phase space.  From the eigenvalues and the eigenvectors of A it is possible to determine if an initial point will converge or diverge to the equilibrium point at the origin.
+
+History 
+The origin of the  goes back to Gottfried Leibniz, who in the seventeenth century, after having constructed a successful mechanical calculating machine, dreamt of building a machine that could manipulate symbols in order to determine the truth values of mathematical statements. He realized that the first step would have to be a clean formal language, and much of his subsequent work was directed toward that goal. In 1928, David Hilbert and Wilhelm Ackermann posed the question in the form outlined above.",0.5,local,determine the correct option: which of the following statements accurately describes the origin and significance of the triskeles symbol?,3373201097
+583,"Select the most accurate option: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? carefully.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"Lidar (, an acronym of light detection and ranging or laser imaging, detection, and ranging, often stylized LiDAR) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed direction (e.g., vertical) or it may scan directions, in a special combination of 3D scanning and laser scanning.
+
+Lidar has terrestrial, airborne, and mobile uses. It is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swathe mapping (ALSM), and laser altimetry. It is used to make digital 3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has also been increasingly used in control and navigation for autonomous cars and for the",0.1,live_api,"select the most accurate option: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? carefully.",3254867156
+584,Select the most accurate option: What is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? based on the given context.,Blueshifting,Redshifting,Reddening,Whitening,Yellowing,C,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.21052631578947367,live_api,select the most accurate option: what is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? based on the given context.,1741621193
+585,Select the most accurate option: Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+Concept 
+Diffraction is a general phenomenon of waves, occuring whenever a wavefront is obstructed. The obstruction may be solidly blocking the wave or transparent and shifting the phase of the wave. The waves beyond the obstacle interfere causing a diffraction pattern. The diffraction pattern cannot be predicted by the straight line trajectories of geometrical optics. For a simple example, a strong light source blocked by a solid object does not show a crisp dark shadow when examined carefully.",0.5,local,select the most accurate option: which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,909607861
+586,What is Lorentz symmetry or Lorentz invariance in relativistic physics?,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"A partial listing of physical conservation equations due to symmetry that are said to be exact laws, or more precisely have never been proven to be violated:
+ Conservation law Respective Noether symmetry invariance Number of independent parameters(i.e. dimension of phase space) Conservation of energy  Time-translation invariance  Poincaré invariance 1  translation of time along -axis Conservation of linear momentum  Space-translation invariance 3  translation of space along x,y,z axes Conservation of angular momentum  Rotation invariance 3  rotation of space about x,y,z axes Conservation of boost 3-vector  Lorentz-boost invariance 3 Lorentz-boost of space-time along x,y,z axes Conservation of electric charge U(1)Q Gauge invariance 1  translation of electrodynamic scalar potential field along -axis (in phase space) Conservation of color charge SU(3)C Gauge invariance 3  translation of chromodynamic potential field along r,g,b-axes (in phase space) Conservation of weak isospin SU(2)L Gauge invariance 1  translation of weak potential field along axis in phase spaceConservation of the difference between baryon and lepton numbers B − LU(1)B−L Gauge invariance1
+
+Relativistic explanation
+The reasoning in the relativistic case is the same except that the relativistic velocity addition formulas must be used, which can be derived from Lorentz transformations between different frames of reference. These formulas are
+
+Hendrik Lorentz spent considerable effort along these lines. After working on this problem for a decade, the issues with Stokes' theory caused him to abandon it and to follow Fresnel's suggestion of a (mostly) stationary aether (1892, 1895). However, in Lorentz's model the aether was completely immobile, like the electromagnetic aethers of Cauchy, Green and Maxwell and unlike Fresnel's aether. He obtained Fresnel's dragging coefficient from modifications of Maxwell's electromagnetic theory, including a modification of the time coordinates in moving frames (""local time""). In order to explain the Michelson–Morley experiment (1887), which apparently contradicted both Fresnel's and Lorentz's immobile aether theories, and apparently confirmed Stokes' complete aether drag, Lorentz theorized (1892) that objects undergo ""length contraction"" by a factor of  in the direction of their motion through the aether. In this way, aberration (and all related optical phenomena) can be accounted for in the context of an immobile aether. Lorentz' theory became the basis for much research in the next decade, and beyond. Its predictions for aberration are identical to those of the relativistic theory.",0.8333333333333334,local,what is lorentz symmetry or lorentz invariance in relativistic physics?,2740251254
+587,Select the most accurate option: What is the significance of regularization in terms of renormalization problems in physics?,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a principle that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a mechanism below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a structure under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a mechanism below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.",0.4,local,select the most accurate option: what is the significance of regularization in terms of renormalization problems in physics?,3150775872
+588,Determine the correct option: What is the interstellar medium (ISM)? among the listed options.,"The matter and radiation that exist in the space between the star structures in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar mechanism, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.",0.3333333333333333,local,determine the correct option: what is the interstellar medium (ism)? among the listed options.,3275182564
+589,Choose the correct answer: What is the relationship between chemical potential and quarks/antiquarks? from the following choices.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a mechanism. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a structure. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a mechanism. Higher μ indicates a higher density of quarks.",A,No match found.,0.0,live_api,choose the correct answer: what is the relationship between chemical potential and quarks/antiquarks? from the following choices.,3689701388
+590,Pick the best possible answer: What is magnetic susceptibility? based on the given context.,"Magnetic susceptibility is a measure of how much a material will absorb magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will resist magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will conduct magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will reflect magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.",B,"Diamagnetic materials, like water, or water-based materials, have a relative magnetic permeability that is less than or equal to 1, and therefore a magnetic susceptibility less than or equal to 0, since susceptibility is defined as . This means that diamagnetic materials are repelled by magnetic fields. However, since diamagnetism is such a weak property, its effects are not observable in everyday life. For example, the magnetic susceptibility of diamagnets such as water is . The most strongly diamagnetic material is bismuth, , although pyrolytic carbon may have a susceptibility of  in one plane. Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets. Because χv is derived from the ratio of the internal magnetic field to the applied field, it is a dimensionless value.",0.3333333333333333,local,pick the best possible answer: what is magnetic susceptibility? based on the given context.,1183717677
+591,What is reciprocal length or inverse length?,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).
+
+See also
+Conversion of units
+Orders of magnitude (length)
+Reciprocal length
+
+where  is the attenuation at a given wavelength ,  is the particle concentration as a number density, and  is the path length. The absorbance of the radiation is the logarithm (decadic or, more usually, natural) of the reciprocal of the transmittance :",1.0,local,what is reciprocal length or inverse length?,3825384497
+592,Which of the following is correct? What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+Membranes
+Cholesterol is present in varying degrees in all animal cell membranes but is absent in prokaryotes. It is required to build and maintain membranes and modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group of each cholesterol molecule interacts with water molecules surrounding the membrane, as do the polar heads of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty-acid chain of the other lipids. Through the interaction with the phospholipid fatty-acid chains, cholesterol increases membrane packing, which both alters membrane fluidity and maintains membrane integrity so that animal cells do not need to build cell walls (like plants and most bacteria). The membrane remains stable and durable without being rigid, allowing animal cells to change shape and animals to move.
+
+The three-dimensional structure of the thylakoid membrane system has been disputed. Many models have been proposed, the most prevalent being the helical model, in which granum stacks of thylakoids are wrapped by helical stromal thylakoids. Another model known as the 'bifurcation model', which was based on the first electron tomography study of plant thylakoid membranes, depicts the stromal membranes as wide lamellar sheets perpendicular to the grana columns which bifurcates into multiple parallel discs forming the granum-stroma assembly. The helical model was supported by several additional works, but ultimately it was determined in 2019 that features from both the helical and bifurcation models are consolidated by newly discovered left-handed helical membrane junctions. Likely for ease, the thylakoid system is still commonly depicted by older ""hub and spoke"" models where the grana are connected to each other by tubes of stromal thylakoids.",0.4666666666666667,local,which of the following is correct? what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,3209120590
+593,What is Minkowski space?,Minkowski space is a physical space where objects move in a straight line unless acted upon by a force.,Minkowski space is a mathematical model that combines inertial space and time manifolds with a non-inertial reference frame of space and time into a four-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a two-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a three-dimensional model relating a position to the field.,Minkowski space is a physical space where objects move in a curved line unless acted upon by a force.,B,"Let  be subsets of a real vector-space, the convex hull of their Minkowski sum is the Minkowski sum of their convex hulls
+
+A fundamental example of such a space is the Minkowski space, which is the space-time of Einstein's special relativity. It is a four-dimensional space, where the metric is defined by the quadratic form
+
+in algebraic terminology,  is the identity element of Minkowski addition (on the collection of non-empty sets).The empty set is important in Minkowski addition, because the empty set annihilates every other subset: For every subset  of a vector space, its sum with the empty set is empty: .",1.0,local,what is minkowski space?,2716708993
+594,Determine the correct option: What is the role of the Higgs boson in the Standard Model?,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.5,local,determine the correct option: what is the role of the higgs boson in the standard model?,3941897920
+595,Which of the following is correct? What is a light-year? among the listed options.,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+The Talmud presents three options:
+ The law requires only one light each night per household,
+ A better practice is to light one light each night for each member of the household
+ The most preferred practice is to vary the number of lights each night.
+
+When Thomas Wyatt the Younger instigated what became known as Wyatt's rebellion in early 1554, John Ponet, the highest-ranking ecclesiastic among the exiles, allegedly participated in the uprising. He escaped to Strasbourg after the Rebellion's defeat and, the following year, he published A Shorte Treatise of Politike Power, in which he put forward a theory of justified opposition to secular rulers.",0.875,local,which of the following is correct? what is a light-year? among the listed options.,2826996014
+596,"Which of the following is correct? What is the concept of simultaneity in Einstein's book, Relativity? carefully.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.",0.7,local,"which of the following is correct? what is the concept of simultaneity in einstein's book, relativity? carefully.",363793072
+597,Choose the correct answer: What is the gravitomagnetic interaction? carefully.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general concept of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Such questions can be answered jes (yes) or ne (no) in the European fashion of aligning with the polarity of the answer, or ĝuste (correct) or malĝuste (incorrect) in the Japanese fashion of aligning with the polarity of the question:
+
+Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.",0.3333333333333333,local,choose the correct answer: what is the gravitomagnetic interaction? carefully.,1143170932
+598,What is the Ozma Problem?,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"It also is often quite difficult to assign the L, L, L, L, symbols to the physical variables involved in the problem of interest. He invokes a procedure that involves the ""symmetry"" of the physical problem. This is often very difficult to apply reliably: It is unclear as to what parts of the problem that the notion of ""symmetry"" is being invoked. Is it the symmetry of the physical body that forces are acting upon, or to the points, lines or areas at which forces are being applied? What if more than one body is involved with different symmetries?
+
+The term Bayesian derives from the 18th-century English mathematician and theologian Thomas Bayes, who provided the first mathematical treatment of a non-trivial problem of statistical data analysis using what is now known as Bayesian inference. Mathematician Pierre-Simon Laplace pioneered and popularized what is now called Bayesian probability.
+
+Among the most difficult problems in knowledge representation are the breadth of commonsense knowledge (the set of atomic facts that the average person knows is enormous);Breadth of commonsense knowledge: , , ,  (qualification problem) and the sub-symbolic form of most commonsense knowledge (much of what people know is not represented as ""facts"" or ""statements"" that they could express verbally). There is also the difficulty of knowledge acquisition, the problem of obtaining knowledge for AI applications.",0.5,local,what is the ozma problem?,2752500236
+599,Pick the best possible answer: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere? from the following choices.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,pick the best possible answer: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere? from the following choices.,1567922493
+600,Pick the best possible answer: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? among the listed options.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,pick the best possible answer: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? among the listed options.,2711158314
+601,Determine the correct option: What is magnetic susceptibility? among the listed options.,"Magnetic susceptibility is a measure of how much a material will absorb magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will resist magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will conduct magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will reflect magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.",B,"Diamagnetic materials, like water, or water-based materials, have a relative magnetic permeability that is less than or equal to 1, and therefore a magnetic susceptibility less than or equal to 0, since susceptibility is defined as . This means that diamagnetic materials are repelled by magnetic fields. However, since diamagnetism is such a weak property, its effects are not observable in everyday life. For example, the magnetic susceptibility of diamagnets such as water is . The most strongly diamagnetic material is bismuth, , although pyrolytic carbon may have a susceptibility of  in one plane. Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets. Because χv is derived from the ratio of the internal magnetic field to the applied field, it is a dimensionless value.",0.25,local,determine the correct option: what is magnetic susceptibility? among the listed options.,2078703131
+602,Choose the correct answer: Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions?,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+In 1956, Tsung-Dao Lee and Chen Ning Yang noticed that there was no evidence that parity was conserved in weak interactions, and so they postulated that this symmetry may not be preserved by the weak force. They sketched the design for an experiment for testing conservation of parity in the laboratory. Later that year, Chien-Shiung Wu and coworkers showed experimentally that an asymmetrical beta emission from  proved that parity is not conserved in beta decay. This surprising result overturned long-held assumptions about parity and the weak force. In recognition of their theoretical work, Lee and Yang were awarded the Nobel Prize for Physics in 1957. However Wu, who was female, was not awarded the Nobel prize.
+
+Wigner was awarded the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"". The prize was shared that year, with the other half of the award divided between Maria Goeppert-Mayer and J. Hans D. Jensen. Wigner professed that he had never considered the possibility that this might occur, and added: ""I never expected to get my name in the newspapers without doing something wicked."" He also won the Franklin Medal in 1950, the Enrico Fermi award in 1958, the Atoms for Peace Award in 1959, the Max Planck Medal in 1961, the National Medal of Science in 1969, the Albert Einstein Award in 1972, the Golden Plate Award of the American Academy of Achievement in 1974, the eponymous Wigner Medal in 1978, and the Herzl Prize in 1982. In 1968 he gave the Josiah Willard Gibbs lecture.",0.5,local,choose the correct answer: who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions?,673577969
+603,Determine the correct option: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680+) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680+ ultimately comes from the oxidation of water into O2 and H+ through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700+ of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700+ can vary.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.42857142857142855,local,determine the correct option: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,4190398067
+604,Select the most accurate option: What is the Erlangen program? carefully.,"The Erlangen program is a approach of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on group concept and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is an audio coding format developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg. It was designed to greatly reduce the amount of data required to represent audio, yet still sound like a faithful reproduction of the original uncompressed audio to most listeners; for example, compared to CD-quality digital audio, MP3 compression can commonly achieve a 75–95% reduction in size, depending on the bit rate. In popular usage, MP3 often refers to files of sound or music recordings stored in the MP3 file format (.mp3) on consumer electronic devices.
+MPEG-1 Audio Layer III was originally defined in 1991 as one of the three possible audio codecs of the MPEG-1 standard (along with MPEG-1 Audio Layer I and  MPEG-1 Audio Layer II). All three options were retained and further extended—defining additional bit rates and support for more audio channels (supporting surround sound—in the subsequent MPE",0.14285714285714285,live_api,select the most accurate option: what is the erlangen program? carefully.,394965574
+605,"Select the most accurate option: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? based on the given context.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)",0.3684210526315789,local,"select the most accurate option: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? based on the given context.",942465184
+606,Choose the correct answer: What are permutation-inversion groups?,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"The statistics of random permutations, such as the cycle structure of a random permutation, are of fundamental importance in the analysis of algorithms, especially of sorting algorithms, which operate on random permutations. Suppose, for example, that we are using quickselect (a cousin of quicksort) to select a random element of a random permutation. Quickselect will perform a partial sort on the array, as it partitions the array according to the pivot. Hence a permutation will be less disordered after quickselect has been performed. The amount of disorder that remains may be analysed with generating functions. These generating functions depend in a fundamental way on the generating functions of random permutation statistics. Hence it is of vital importance to compute these generating functions.
+The article on random permutations contains an introduction to random permutations.",0.16666666666666666,live_api,choose the correct answer: what are permutation-inversion groups?,2342672628
+607,Which of the following is correct? What is the definition of dimension in mathematics? from the following choices.,"The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of degrees of freedom of a point that moves on this object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.",C,"Topological spaces
+For any normal topological space , the Lebesgue covering dimension of  is defined to be the smallest integer n for which the following holds: any open cover has an open refinement (a second open cover in which each element is a subset of an element in the first cover) such that no point is included in more than  elements. In this case dim . For  a manifold, this coincides with the dimension mentioned above. If no such integer  exists, then the dimension of  is said to be infinite, and one writes dim . Moreover,  has dimension −1, i.e. dim  if and only if  is empty. This definition of covering dimension can be extended from the class of normal spaces to all Tychonoff spaces merely by replacing the term ""open"" in the definition by the term ""functionally open"".
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.7142857142857143,local,which of the following is correct? what is the definition of dimension in mathematics? from the following choices.,662047337
+608,Identify the correct statement: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680+) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680+ ultimately comes from the oxidation of water into O2 and H+ through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700+ of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700+ can vary.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.42857142857142855,local,identify the correct statement: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,3737323487
+609,"What is the ""ultraviolet catastrophe""?",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven theory about the distribution of electromagnetic radiation.,B,"In 1801 German physicist Johann Wilhelm Ritter discovered ultraviolet in an experiment similar to Herschel's, using sunlight and a glass prism. Ritter noted that invisible rays near the violet edge of a solar spectrum dispersed by a triangular prism darkened silver chloride preparations more quickly than did the nearby violet light. Ritter's experiments were an early precursor to what would become photography. Ritter noted that the ultraviolet rays (which at first were called ""chemical rays"") were capable of causing chemical reactions.
+
+As can be seen, when the dimensional units appearing in the numerator and denominator of the equation's right hand side are cancelled out, both sides of the equation have the same dimensional units. Dimensional analysis can be used as a tool to construct equations that relate non-associated physico-chemical properties. The equations may reveal undiscovered or overlooked properties of matter, in the form of left-over dimensions – dimensional adjusters – that can then be assigned physical significance. It is important to point out that such 'mathematical manipulation' is neither without prior precedent, nor without considerable scientific significance. Indeed, the Planck constant, a fundamental physical constant, was 'discovered' as a purely mathematical abstraction or representation that built on the Rayleigh–Jeans law for preventing the ultraviolet catastrophe. It was assigned and ascended to its quantum physical significance either in tandem or post mathematical dimensional adjustment – not earlier.
+
+Many birds show plumage patterns in ultraviolet that are invisible to the human eye; some birds whose sexes appear similar to the naked eye are distinguished by the presence of ultraviolet reflective patches on their feathers. Male blue tits have an ultraviolet reflective crown patch which is displayed in courtship by posturing and raising of their nape feathers. Ultraviolet light is also used in foraging—kestrels have been shown to search for prey by detecting the UV fluorescent urine trail marks left on the ground by rodents. With the exception of pigeons and a few other species, the eyelids of birds are not used in blinking. Instead the eye is lubricated by the nictitating membrane, a third eyelid that moves horizontally. The nictitating membrane also covers the eye and acts as a contact lens in many aquatic birds. The bird retina has a fan shaped blood supply system called the pecten.",1.0,local,"what is the ""ultraviolet catastrophe""?",490312895
+610,What is the De Haas-Van Alphen effect?,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.
+
+A complete original version of the Einstein-de Haas experimental equipment was donated by Geertruida de Haas-Lorentz, wife of de Haas and daughter of Lorentz, to the Ampère Museum in Lyon France in 1961 where it is currently on display. It was lost among the museum's holdings and was rediscovered in 2023.
+
+Einstein resigned from the Prussian Academy in March 1933. His accomplishments in Berlin had included the completion of the general theory of relativity, proving the Einstein–de Haas effect, contributing to the quantum theory of radiation, and the development of Bose–Einstein statistics.",1.0,local,what is the de haas-van alphen effect?,2438563239
+611,Determine the correct option: What is a Schwarzschild black hole? from the following choices.,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.
+
+For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole.",0.375,local,determine the correct option: what is a schwarzschild black hole? from the following choices.,136260301
+612,Pick the best possible answer: What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? from the following choices.,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.
+
+During the quark epoch (shortly after the Big Bang), the electroweak force split into the electromagnetic and weak force. It is thought that the required temperature of 1015 K has not been seen widely throughout the universe since before the quark epoch, and currently the highest human-made temperature in thermal equilibrium is around  (from the Large Hadron Collider).",0.4,local,pick the best possible answer: what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? from the following choices.,4105853297
+613,Pick the best possible answer: What is radiosity in radiometry? carefully.,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,No match found.,0.0,live_api,pick the best possible answer: what is radiosity in radiometry? carefully.,2722034908
+614,Identify the correct statement: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? carefully.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,identify the correct statement: what is the 'reactive leidenfrost effect' observed in non-volatile materials? carefully.,17449696
+615,"Pick the best possible answer: What is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? based on the given context.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+As a result of the state's strong environmental movement, California has some of the most aggressive renewable energy goals in the U.S. The Clean Energy, Jobs and Affordability Act of 2022 commits the state to running its operations on clean, renewable energy resources by 2035, and SB 1203 also requires the state to achieve net-zero operations for all agencies. Currently, several solar power plants such as the Solar Energy Generating Systems facility are located in the Mojave Desert. California's wind farms include Altamont Pass, San Gorgonio Pass, and Tehachapi Pass. The Tehachapi area is also where the Tehachapi Energy Storage Project is located. Several dams across the state provide hydro-electric power. It would be possible to convert the total supply to 100% renewable energy, including heating, cooling and mobility, by 2050.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..",0.35294117647058826,local,"pick the best possible answer: what is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? based on the given context.",723676124
+616,Select the most accurate option: What is the mechanism of FTIR? from the following choices.,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"If, despite the preceding admonition, one decides to construct one's own domain parameters, one should select the underlying field and then use one of the following strategies to find a curve with appropriate (i.e., near prime) number of points using one of the following methods:
+ Select a random curve and use a general point-counting algorithm, for example, Schoof's algorithm or the Schoof–Elkies–Atkin algorithm,
+ Select a random curve from a family which allows easy calculation of the number of points (e.g., Koblitz curves), or
+ Select the number of points and generate a curve with this number of points using the complex multiplication technique.
+
+Evidence suggests that the concept of electing representatives was originally conceived to be different from democracy. Prior to the 18th century, some societies in Western Europe used sortition as a means to select rulers, a method which allowed regular citizens to exercise power, in keeping with understandings of democracy at the time. The idea of what constituted a legitimate government shifted in the 18th century to include consent, especially with the rise of the enlightenment. From this point onward, sortition fell out of favor as a mechanism for selecting rulers. On the other hand, elections began to be seen as a way for the masses to express popular consent repeatedly, resulting in the triumph of the electoral process until the present day.
+
+The assumption of new values or the rebellion against accepted notions of what is aesthetically superior need not occur concurrently with a complete abandonment of the pursuit of what is aesthetically appealing. Indeed, the reverse is often true, that the revision of what is popularly conceived of as being aesthetically appealing allows for a re-invigoration of aesthetic sensibility, and a new appreciation for the standards of art itself. Countless schools have proposed their own ways to define quality, yet they all seem to agree in at least one point: once their aesthetic choices are accepted, the value of the work of art is determined by its capacity to transcend the limits of its chosen medium to strike some universal chord by the rarity of the skill of the artist or in its accurate reflection in what is termed the zeitgeist. Art is often intended to appeal to and connect with human emotion. It can arouse aesthetic or moral feelings, and can be understood as a way of communicating these feelings. Artists express something so that their audience is aroused to some extent, but they do not have to do so consciously. Art may be considered an exploration of the human condition; that is, what it is to be human.",0.625,local,select the most accurate option: what is the mechanism of ftir? from the following choices.,3742261619
+617,Which of the following is correct? What are coherent turbulent structures? among the listed options.,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the approachs of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the procedures of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the approachs of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the approachs of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the techniques of time-averaged statistics cannot be applied.",C,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.3333333333333333,local,which of the following is correct? what are coherent turbulent structures? among the listed options.,3663360262
+618,Identify the correct statement: What is the Minkowski diagram used for? based on the given context.,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6666666666666666,local,identify the correct statement: what is the minkowski diagram used for? based on the given context.,4074018741
+619,Choose the correct answer: What is the SI unit of the physical quantity m/Q? carefully.,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.5,local,choose the correct answer: what is the si unit of the physical quantity m/q? carefully.,1251405850
+620,Identify the correct statement: What is the significance of probability amplitudes in quantum mechanics? from the following choices.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).
+
+Consider a quantum circuit , which consists of  gates, , where each  comes from a universal gate set and acts on at most two qubits.
+To understand what the sum of histories is, we visualize the evolution of a quantum state given a quantum circuit as a tree. The root is the input , and each node in the tree has  children, each representing a state in . The weight on a tree edge from a node in -th level representing a state  to a node in -th level  representing a state  is , the amplitude of  after applying  on . The transition amplitude of a root-to-leaf path is the product of all the weights on the edges along the path. To get the probability of the final state being , we sum up the amplitudes of all root-to-leave paths that ends at a node representing .",0.4,local,identify the correct statement: what is the significance of probability amplitudes in quantum mechanics? from the following choices.,126288255
+621,Pick the best possible answer: Which of the following is an accurate definition of dynamic scaling in self-similar mechanisms?,"Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Machine learning (ML) is a field of study in artificial intelligence concerned with the development and study of statistical algorithms that can learn from  data and generalize to unseen data, and thus perform tasks without being explicitly programmed. Advances in the field of deep learning have allowed neural networks, a class of statistical algorithms, to surpass many previous machine learning approaches in performance.
+Statistics and mathematical optimisation methods compose the foundations of machine learning. Data mining is a related field of study, focusing on exploratory data analysis (EDA) through unsupervised learning.
+From a theoretical viewpoint, probably approximately correct learning provides a mathematical and statistical framework for describing machine learning. Most traditional machine learning and deep learning algorithms can be described as empirical risk minimisation under this framework.",0.0,live_api,pick the best possible answer: which of the following is an accurate definition of dynamic scaling in self-similar mechanisms?,3389711673
+622,Pick the best possible answer: Which of the following is an accurate definition of dynamic scaling in self-similar frameworks? carefully.,"Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar structures, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Race is a categorization of humans based on shared physical or social qualities into groups generally viewed as distinct within a given society. The term came into common usage during the 16th century, when it was used to refer to groups of various kinds, including those characterized by close kinship relations. By the 17th century, the term began to refer to physical (phenotypical) traits, and then later national affiliations or perceived ancestry. Modern science regards race as a social construct, an identity which is assigned based on rules made by society. While partly based on physical similarities within groups, race does not have an inherent physical or biological meaning. The concept of race is foundational to racism, the belief that humans can be divided based on the superiority of one race over another.
+Social conceptions and groupings of races have varied over time, often involving folk taxonomies that define essential types of individuals based on perceived traits. Modern s",0.07142857142857142,live_api,pick the best possible answer: which of the following is an accurate definition of dynamic scaling in self-similar frameworks? carefully.,3099314198
+623,Select the most accurate option: What is the Droste effect?,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"The system came with two Intellivision-style controllers with a 12-button keypad and ""fire"" buttons on the sides. The direction pads have a removable joystick attachment. Most games came with BoPET overlays that can be applied to the controller's keypads. The console itself has five buttons: Power, Start, Reset, Option, and Select.",0.5,local,select the most accurate option: what is the droste effect?,380882538
+624,Which of the following is correct? What is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? carefully.,Blueshifting,Redshifting,Reddening,Whitening,Yellowing,C,"Infrared radiation in the spectral distribution of a black body is usually considered a form of heat, since it has an equivalent temperature and is associated with an entropy change per unit of thermal energy. However, ""heat"" is a technical term in physics and thermodynamics and is often confused with thermal energy. Any type of electromagnetic energy can be transformed into thermal energy in interaction with matter. Thus, any electromagnetic radiation can ""heat"" (in the sense of increase the thermal energy temperature of) a material, when it is absorbed. The inverse or time-reversed process of absorption is thermal radiation. Much of the thermal energy in matter consists of random motion of charged particles, and this energy can be radiated away from the matter. The resulting radiation may subsequently be absorbed by another piece of matter, with the deposited energy heating the material.
+
+As the universe expands, both matter and radiation become diluted. However, the energy densities of radiation and matter dilute at different rates. As a particular volume expands, mass-energy density is changed only by the increase in volume, but the energy density of radiation is changed both by the increase in volume and by the increase in the wavelength of the photons that make it up. Thus the energy of radiation becomes a smaller part of the universe's total energy than that of matter as it expands. The very early universe is said to have been 'radiation dominated' and radiation controlled the deceleration of expansion. Later, as the average energy per photon becomes roughly 10 eV and lower, matter dictates the rate of deceleration and the universe is said to be 'matter dominated'. The intermediate case is not treated well analytically. As the expansion of the universe continues, matter dilutes even further and the cosmological constant becomes dominant, leading to an acceleration in the universe's expansion.
+
+Together, wave and particle effects fully explain the emission and absorption spectra of EM radiation. The matter-composition of the medium through which the light travels determines the nature of the absorption and emission spectrum. These bands correspond to the allowed energy levels in the atoms. Dark bands in the absorption spectrum are due to the atoms in an intervening medium between source and observer. The atoms absorb certain frequencies of the light between emitter and detector/eye, then emit them in all directions. A dark band appears to the detector, due to the radiation scattered out of the light beam. For instance, dark bands in the light emitted by a distant star are due to the atoms in the star's atmosphere.",0.4375,local,which of the following is correct? what is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field? carefully.,2989468822
+625,Which of the following is correct? What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? from the following choices.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's framework of general relativity.",C,No match found.,0.0,live_api,which of the following is correct? what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? from the following choices.,1983185674
+626,Which of the following is correct? What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? from the following choices.,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.
+
+During the quark epoch (shortly after the Big Bang), the electroweak force split into the electromagnetic and weak force. It is thought that the required temperature of 1015 K has not been seen widely throughout the universe since before the quark epoch, and currently the highest human-made temperature in thermal equilibrium is around  (from the Large Hadron Collider).",0.5555555555555556,local,which of the following is correct? what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? from the following choices.,3686995572
+627,Identify the correct statement: What is the SI unit of the physical quantity m/Q? based on the given context.,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+The dimension of a physical quantity can be expressed as a product of the base physical dimensions such as length, mass and time, each raised to an integer (and occasionally rational) power. The dimension of a physical quantity is more fundamental than some scale or unit used to express the amount of that physical quantity. For example, mass is a dimension, while the kilogram is a particular reference quantity chosen to express a quantity of mass. The choice of unit is arbitrary, and its choice is often based on historical precedent. Natural units, being based on only universal constants, may be thought of as being ""less arbitrary"".
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).",0.5833333333333334,local,identify the correct statement: what is the si unit of the physical quantity m/q? based on the given context.,1867703392
+628,Choose the correct answer: What is the synapstor or synapse transistor? from the following choices.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term depression for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and inactivity-based forgetting.,E,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Such questions can be answered jes (yes) or ne (no) in the European fashion of aligning with the polarity of the answer, or ĝuste (correct) or malĝuste (incorrect) in the Japanese fashion of aligning with the polarity of the question:",0.3333333333333333,local,choose the correct answer: what is the synapstor or synapse transistor? from the following choices.,2448215631
+629,Determine the correct option: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? based on the given context.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,determine the correct option: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? based on the given context.,1531185378
+630,Identify the correct statement: What is the reason for recycling rare metals according to the United Nations?,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will minimize in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Multiple methods have been proposed for the recycling of CRT glass. The methods involve thermal, mechanical and chemical processes. All proposed methods remove the lead oxide content from the glass. Some companies operated furnaces to separate the lead from the glass. A coalition called the Recytube project was once formed by several European companies to devise a method to recycle CRTs. The phosphors used in CRTs often contain rare earth metals. A CRT contains about 7 grams of phosphor.",0.7,local,identify the correct statement: what is the reason for recycling rare metals according to the united nations?,4002198588
+631,Select the most accurate option: What is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,No match found.,0.0,live_api,select the most accurate option: what is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,2498568787
+632,Pick the best possible answer: Who was the first person to describe the pulmonary circulation framework?,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.
+
+The aortic arch loops over the left pulmonary artery and the bifurcation of the pulmonary trunk, to which it remains connected by the ligamentum arteriosum, a remnant of the fetal circulation that is obliterated a few days after birth. In addition to these blood vessels, the aortic arch crosses the left main bronchus. Between the aortic arch and the pulmonary trunk is a network of autonomic nerve fibers, the cardiac plexus or aortic plexus. The left vagus nerve, which passes anterior to the aortic arch, gives off a major branch, the recurrent laryngeal nerve, which loops under the aortic arch just lateral to the ligamentum arteriosum. It then runs back to the neck.",0.36363636363636365,local,pick the best possible answer: who was the first person to describe the pulmonary circulation framework?,430210408
+633,Pick the best possible answer: What is the American Petroleum Institute (API) gravity? based on the given context.,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,No match found.,0.0,live_api,pick the best possible answer: what is the american petroleum institute (api) gravity? based on the given context.,3585482079
+634,Determine the correct option: What is Martin Heidegger's view on the relationship between time and human existence? carefully.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Martin Heidegger is the best known of Husserl's students, the one whom Husserl chose as his successor at Freiburg. Heidegger's magnum opus Being and Time was dedicated to Husserl. They shared their thoughts and worked alongside each other for over a decade at the University of Freiburg, Heidegger being Husserl's assistant during 1920–1923.Kockelmans, ""Introduction [Martin Heidegger]"" 267–276, 273, in Kockelmans, editor, Phenomenology (1967). Heidegger's early work followed his teacher, but with time he began to develop new insights distinctively variant. Husserl became increasingly critical of Heidegger's work, especially in 1929, and included pointed criticism of Heidegger in lectures he gave during 1931.See above subsection ""Heidegger and the Nazi era"". Heidegger, while acknowledging his debt to Husserl, followed a political position offensive and harmful to Husserl after the Nazis came to power in 1933, Husserl being of Jewish origin and Heidegger infamously being then a Nazi proponent.The multivalent, including the ""horrifying"", aspects of Heidegger in a parallel context are recounted in Peter Eli Gordon, Rosensweig and Heidegger: Between Judaism and German Philosophy (University of California 2003) at 13–14 (Heidegger and Rosensweig's early ""kinship"" with him). ""In 1929, however, one could still read Heidegger's philosophy without being drawn into a controversy concerning its relationship to National Socialism, antisemitism, and the like. The German philosophical world as a whole still cloaked itself in a mantle of relative innocence."" Gordon (2003) at 303–304. ""Rosensweig's work represents the culmination of what is often called the German Jewish Tradition."" Gordon, ""Preface"" (2003) at xix. Academic discussion of Husserl and Heidegger is extensive.",0.46153846153846156,local,determine the correct option: what is martin heidegger's view on the relationship between time and human existence? carefully.,3922923247
+635,Pick the best possible answer: What is the interpretation of supersymmetry in stochastic supersymmetric principle?,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,No match found.,0.0,live_api,pick the best possible answer: what is the interpretation of supersymmetry in stochastic supersymmetric principle?,1128751368
+636,Determine the correct option: What is the role of the Higgs boson in the Standard Model? carefully.,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.4444444444444444,local,determine the correct option: what is the role of the higgs boson in the standard model? carefully.,2158264341
+637,Which of the following is correct? What is a light-year?,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"The CIE color rendering index (CRI) is a method to determine how well a light source's illumination of eight sample patches compares to the illumination provided by a reference source. Cited together, the CRI and CCT give a numerical estimate of what reference (ideal) light source best approximates a particular artificial light, and what the difference is.
+
+Filters on a camera lens, or color gels over the light source(s) may be used to correct color balance. When shooting with a bluish light (high color temperature) source such as on an overcast day, in the shade, in window light, or if using tungsten film with white or blue light, a yellowish-orange filter will correct this. For shooting with daylight film (calibrated to 5600 K) under warmer (low color temperature) light sources such as sunsets, candlelight or tungsten lighting, a bluish (e.g. #80A) filter may be used. More-subtle filters are needed to correct for the difference between, say 3200 K and 3400 K tungsten lamps or to correct for the slightly blue cast of some flash tubes, which may be 6000 K.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.6,local,which of the following is correct? what is a light-year?,1825302705
+638,Identify the correct statement: What is the relationship between interstellar and cometary chemistry? from the following choices.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,"Interstellar destruction mechanisms 
+There are 113 total proposed reactions leading to the destruction of . Of these, 39 were tabulated in extensive tables of the chemistry among C, N and O compounds. A review of interstellar ammonia cites the following reactions as the principal dissociation mechanisms:",0.3,local,identify the correct statement: what is the relationship between interstellar and cometary chemistry? from the following choices.,1970415226
+639,Which of the following is correct? What is radiosity in radiometry? carefully.,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,No match found.,0.0,live_api,which of the following is correct? what is radiosity in radiometry? carefully.,1010474749
+640,Identify the correct statement: What was Pierre de Fermat's solution to the problem of refraction? carefully.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Pierre de Fermat also pioneered the development of analytic geometry. Although not published in his lifetime, a manuscript form of Ad locos planos et solidos isagoge (Introduction to Plane and Solid Loci) was circulating in Paris in 1637, just prior to the publication of Descartes' Discourse.Pierre de Fermat, Varia Opera Mathematica d. Petri de Fermat, Senatoris Tolosani (Toulouse, France:  Jean Pech, 1679), ""Ad locos planos et solidos isagoge,"" pp. 91–103. ""Eloge de Monsieur de Fermat""  (Eulogy of Mr. de Fermat), Le Journal des Scavans, 9 February 1665, pp. 69–72.  From p. 70:  ""Une introduction aux lieux, plans & solides; qui est un traité analytique concernant la solution des problemes plans & solides, qui avoit esté veu devant que M. des Cartes eut rien publié sur ce sujet.""  (An introduction to loci, plane and solid; which is an analytical treatise concerning the solution of plane and solid problems, which was seen before Mr. des Cartes had published anything on this subject.) Clearly written and well received, the Introduction also laid the groundwork for analytical geometry. The key difference between Fermat's and Descartes' treatments is a matter of viewpoint: Fermat always started with an algebraic equation and then described the geometric curve that satisfied it, whereas Descartes started with geometric curves and produced their equations as one of several properties of the curves. As a consequence of this approach, Descartes had to deal with more complicated equations and he had to develop the methods to work with polynomial equations of higher degree. It was Leonhard Euler who first applied the coordinate method in a systematic study of space curves and surfaces.",0.5833333333333334,local,identify the correct statement: what was pierre de fermat's solution to the problem of refraction? carefully.,455646167
+641,Pick the best possible answer: What is the propagation constant in sinusoidal waves? from the following choices.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.",0.3,local,pick the best possible answer: what is the propagation constant in sinusoidal waves? from the following choices.,2163652281
+642,Determine the correct option: What is the relationship between dielectric loss and the transparency of a material? based on the given context.,"Dielectric loss in a material can cause refraction, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can boost the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can raise the material's transparency at higher frequencies.",B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.",0.5833333333333334,local,determine the correct option: what is the relationship between dielectric loss and the transparency of a material? based on the given context.,1292645308
+643,Select the most accurate option: What is the Evans balance? from the following choices.,"The Evans balance is a mechanism used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a framework used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a mechanism used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a structure used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a framework used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"The system came with two Intellivision-style controllers with a 12-button keypad and ""fire"" buttons on the sides. The direction pads have a removable joystick attachment. Most games came with BoPET overlays that can be applied to the controller's keypads. The console itself has five buttons: Power, Start, Reset, Option, and Select.",0.375,local,select the most accurate option: what is the evans balance? from the following choices.,931747261
+644,"Identify the correct statement: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters?","MOND is a concept that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that boosts the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a framework that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a framework that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a concept that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"identify the correct statement: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters?",2416253067
+645,Which of the following is correct? What is the variation between active and passive transport in cells? carefully.,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"CSF is produced by the choroid plexus in two steps. Firstly, a filtered form of plasma moves from fenestrated capillaries in the choroid plexus into an interstitial space, with movement guided by a difference in pressure between the blood in the capillaries and the interstitial fluid. This fluid then needs to pass through the epithelium cells lining the choroid plexus into the ventricles, an active process requiring the transport of sodium, potassium and chloride that draws water into CSF by creating osmotic pressure. Unlike blood passing from the capillaries into the choroid plexus, the epithelial cells lining the choroid plexus contain tight junctions between cells, which act to prevent most substances flowing freely into CSF. Cilia on the apical surfaces of the ependymal cells beat to help transport the CSF.
+
+Passive and active euthanasia
+Voluntary, non-voluntary and involuntary types can be further divided into passive or active variants. Passive euthanasia entails the withholding treatment necessary for the continuance of life. Active euthanasia entails the use of lethal substances or forces (such as administering a lethal injection), and is more controversial. While some authors consider these terms to be misleading and unhelpful, they are nonetheless commonly used. In some cases, such as the administration of increasingly necessary, but toxic doses of painkillers, there is a debate whether or not to regard the practice as active or passive.
+
+Although the replication and transcription of DNA is highly standardized in eukaryotes, the same cannot be said for their karyotypes, which are often highly variable. There may be variation between species in chromosome number and in detailed organization.
+In some cases, there is significant variation within species. Often there is:
+1. variation between the two sexes
+2. variation between the germline and soma (between gametes and the rest of the body)
+3. variation between members of a population, due to balanced genetic polymorphism
+4. geographical variation between races
+5. mosaics or otherwise abnormal individuals.
+Also, variation in karyotype may occur during development from the fertilized egg.",0.7,local,which of the following is correct? what is the variation between active and passive transport in cells? carefully.,1232932991
+646,Select the most accurate option: What are the two main factors that cause resistance in a metal? based on the given context.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.",0.5,local,select the most accurate option: what are the two main factors that cause resistance in a metal? based on the given context.,245976443
+647,"Choose the correct answer: What is the reason behind the designation of Class L dwarfs, and what is their color and composition?","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"The House of Lords is the upper house of the Parliament of the United Kingdom. Like the lower house, the House of Commons, it meets in the Palace of Westminster in London, England. Its origins lie in the early 11th century and the emergence of bicameralism in the 14th century.
+Unlike the House of Commons, membership of the Lords is not acquired by election. Most members are appointed for life as peers, on either a political or non-political basis. The House of Lords also includes up to 26 archbishops and bishops of the Church of England, known as Lords Spiritual. Since 2014, membership may be voluntarily relinquished or terminated upon expulsion. 
+For much of its history, hereditary peers also were members of the House of Lords, and indeed made up the majority of the body's membership for most of that period. Between 1999 and 2026, hereditary membership was limited to 92 excepted hereditary peers, then abolished altogether in 2026.
+As the upper house of Parliament, the House of Lords h",0.0,live_api,"choose the correct answer: what is the reason behind the designation of class l dwarfs, and what is their color and composition?",2498854864
+648,Pick the best possible answer: What is the distinction between illuminance and luminance?,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,No match found.,0.0,live_api,pick the best possible answer: what is the distinction between illuminance and luminance?,1870815930
+649,Determine the correct option: What is a magnetic monopole in particle physics? carefully.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.",0.5,local,determine the correct option: what is a magnetic monopole in particle physics? carefully.,829063450
+650,Pick the best possible answer: Which of the following statements accurately describes the origin and significance of the triskeles symbol? among the listed options.,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,No match found.,0.0,live_api,pick the best possible answer: which of the following statements accurately describes the origin and significance of the triskeles symbol? among the listed options.,1986155231
+651,Pick the best possible answer: What is a pycnometer? among the listed options.,A device used to measure the density of a gas.,A device used to measure the mass of a liquid.,A device used to measure the volume of a gas.,A device used to determine the density of a liquid.,A device used to determine the volume of a liquid.,D,No match found.,0.0,live_api,pick the best possible answer: what is a pycnometer? among the listed options.,465868117
+652,Identify the correct statement: What is the relationship between chemical potential and quarks/antiquarks? among the listed options.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a mechanism. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a mechanism. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a structure. Higher μ indicates a higher density of quarks.",A,"The universe comprises all of existence: all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments. Since the early 20th century, the field of cosmology has established that the universe has been expanding for 13.8 billion years, starting from a dense fireball in an event called the Big Bang. The observable portion of the universe is approximately 93 billion light-years in diameter at present. The total size of the universe is not known.
+Some of the earliest cosmological models of the universe were geocentric, placing Earth at the center. During the Scientific Revolution, astronomical observations led to a heliocentric model. Further observational improvements led to the realization that the Sun is one of a few hundred billion stars in the Milky Way, which is one of a few hundred billion galaxies in the observable universe. At the largest scale, galaxies are distributed uniformly and the same in all directions. At smaller scale",0.0,live_api,identify the correct statement: what is the relationship between chemical potential and quarks/antiquarks? among the listed options.,2677508713
+653,Which of the following is correct? What is the SI base unit of time and how is it defined? carefully.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.",0.5555555555555556,local,which of the following is correct? what is the si base unit of time and how is it defined? carefully.,1074460626
+654,"Choose the correct answer: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"choose the correct answer: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",2637726454
+655,Which of the following is correct? Who was Giordano Bruno? among the listed options.,A German philosopher who supported the Keplerian concept that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic concept that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian concept that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican concept that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean framework that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""
+
+The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8
+
+Bellarmine was a professor of theology and later rector of the Roman College, and in 1602 became Archbishop of Capua. He supported the reform decrees of the Council of Trent. He is also widely remembered for his role in the Giordano Bruno affair, the Galileo affair, and the trial of Friar Fulgenzio Manfredi.",0.4444444444444444,local,which of the following is correct? who was giordano bruno? among the listed options.,2307092124
+656,Identify the correct statement: What is the function of the fibrous cardiac skeleton? based on the given context.,The fibrous cardiac skeleton is a structure of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+The function of a module is what it does.
+ The context of a module are the elements being performed upon.
+ The logic of a module is how it performs the function.
+
+In this example,  itself becomes a function that takes  as an argument, and returns a function that maps each  to  The proper notation for expressing this is verbose. The function  belongs to the set of functions   Meanwhile,  belongs to the set of functions  Thus, something that maps  to  will be of the type  With this notation,  is a function that takes objects from the first set, and returns objects in the second set, and so one writes  This is a somewhat informal example; more precise definitions of what is meant by ""object"" and ""function"" are given below. These definitions vary from context to context, and take different forms, depending on the theory that one is working in.",0.5,local,identify the correct statement: what is the function of the fibrous cardiac skeleton? based on the given context.,1308269775
+657,Select the most accurate option: What is the distinction between active and passive transport in cells? based on the given context.,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"CSF is produced by the choroid plexus in two steps. Firstly, a filtered form of plasma moves from fenestrated capillaries in the choroid plexus into an interstitial space, with movement guided by a difference in pressure between the blood in the capillaries and the interstitial fluid. This fluid then needs to pass through the epithelium cells lining the choroid plexus into the ventricles, an active process requiring the transport of sodium, potassium and chloride that draws water into CSF by creating osmotic pressure. Unlike blood passing from the capillaries into the choroid plexus, the epithelial cells lining the choroid plexus contain tight junctions between cells, which act to prevent most substances flowing freely into CSF. Cilia on the apical surfaces of the ependymal cells beat to help transport the CSF.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6153846153846154,local,select the most accurate option: what is the distinction between active and passive transport in cells? based on the given context.,3890309264
+658,Which of the following is correct? Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? carefully.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.",0.3076923076923077,local,which of the following is correct? which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? carefully.,420653237
+659,Select the most accurate option: What did Newton adopt after his correspondence with Hooke in 1679-1680? carefully.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,select the most accurate option: what did newton adopt after his correspondence with hooke in 1679-1680? carefully.,833405873
+660,What is bollard pull primarily used for measuring?,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,"This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: ""sailor"", from naus: ""ship"".
+Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article. Terms used in other fields associated with bodies of water can be found at Glossary of fishery terms, Glossary of underwater diving terminology, Glossary of rowing terms, and Glossary of meteorology.",0.2,live_api,what is bollard pull primarily used for measuring?,2400629619
+661,Determine the correct option: What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth? among the listed options.,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,determine the correct option: what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth? among the listed options.,3667024562
+662,Identify the correct statement: What is the variation between probability mass function (PMF) and probability density function (PDF)? among the listed options.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability principle.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .",0.2857142857142857,local,identify the correct statement: what is the variation between probability mass function (pmf) and probability density function (pdf)? among the listed options.,1671563480
+663,Pick the best possible answer: What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? among the listed options.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.2857142857142857,local,pick the best possible answer: what is the relationship between the cauchy momentum equation and the navier-stokes equation? among the listed options.,952546261
+664,"Identify the correct statement: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? based on the given context.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The concept of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals
+
+In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).",0.5714285714285714,local,"identify the correct statement: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? based on the given context.",4068232628
+665,Which of the following is correct? What is Modified Newtonian Dynamics (MOND)?,MOND is a concept that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's principle of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a framework that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,"Although the astrophysics community generally accepts the existence of dark matter, a minority of astrophysicists, intrigued by specific observations that are not well explained by ordinary dark matter, argue for various modifications of the standard laws of general relativity. These include modified Newtonian dynamics (MOND), tensor–vector–scalar gravity, and entropic gravity. So far none of the proposed modified gravity theories can describe every piece of observational evidence at the same time, suggesting that even if gravity has to be modified, some form of dark matter will still be required.
+
+The CMB anisotropy was first discovered by COBE in 1992, though this had too coarse resolution to detect the acoustic peaks.
+After the discovery of the first acoustic peak by the balloon-borne BOOMERanG experiment in 2000, the power spectrum was precisely observed by WMAP in 2003–2012, and even more precisely by the Planck spacecraft in 2013–2015. The results support the Lambda-CDM model. The observed CMB angular power spectrum provides powerful evidence in support of dark matter, as its precise structure is well fitted by the Lambda-CDM model, but difficult to reproduce with any competing model such as modified Newtonian dynamics (MOND).
+
+The last major possibility is that general relativity, the theory underpinning modern cosmology, is incorrect. General relativity is well-tested on Solar System scales, but its validity on galactic or cosmological scales has not been well proven. A suitable modification to general relativity can conceivably eliminate the need for dark matter. The best-known theories of this class are modified Newtonian dynamics (MOND) and its relativistic generalization tensor–vector–scalar gravity (TeVeS),For a review, see:  f(R) gravity,For a review, see:  negative mass, dark fluid, entropic gravity, conformal gravity, and massive gravity. Alternative theories abound.",0.5714285714285714,local,which of the following is correct? what is modified newtonian dynamics (mond)?,842117645
+666,Which of the following is correct? What is the Erlangen program? based on the given context.,"The Erlangen program is a approach of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on group framework and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In 2021, the Student Council of the University of Erlangen–Nuremberg changed the name of their Süd-Campus into Rommel-Campus, emphasising that the city of Erlangen stands behind the name and the university needs to do the same. The university's branch of the Education and Science Workers' Union describes the decision as problematic considering Rommel's history of supporting the Nazi regime.",0.75,local,which of the following is correct? what is the erlangen program? based on the given context.,2711606425
+667,Choose the correct answer: What is the reason for the formation of stars exclusively within molecular clouds? carefully.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.45454545454545453,local,choose the correct answer: what is the reason for the formation of stars exclusively within molecular clouds? carefully.,4269109014
+668,"Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters?","MOND is a theory that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a theory that increases the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a theory that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a theory that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a theory that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,"The Lambda-CDM, Lambda cold dark matter, or ΛCDM model is a mathematical model of the Big Bang theory with three major components:
+
+a cosmological constant, denoted by lambda (Λ), associated with dark energy;
+the postulated cold dark matter, denoted by CDM;
+ordinary matter.
+It is the current standard model of Big Bang cosmology, as it is the simplest model that provides a reasonably good account of:
+
+the existence and structure of the cosmic microwave background;
+the large-scale structure in the distribution of galaxies;
+the observed abundances of hydrogen (including deuterium), helium, and lithium;
+the accelerating expansion of the universe observed in the light from distant galaxies and supernovae.
+The model assumes that general relativity is the correct theory of gravity on cosmological scales. It emerged in the late 1990s as a concordance cosmology, after a period when disparate observed properties of the universe appeared mutually inconsistent, and there was no consensus on the ma",0.058823529411764705,live_api,"which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters?",3257698917
+669,Choose the correct answer: Which of the following statements accurately describes the dimension of an object in a CW complex? from the following choices.,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+The dimension is an intrinsic property of an object, in the sense that it is independent of the dimension of the space in which the object is or can be embedded. For example, a curve, such as a circle, is of dimension one, because the position of a point on a curve is determined by its signed distance along the curve to a fixed point on the curve. This is independent from the fact that a curve cannot be embedded in a Euclidean space of dimension lower than two, unless it is a line. Similarly, a surface is of dimension two, even if embedded in three-dimensional space.",0.3076923076923077,local,choose the correct answer: which of the following statements accurately describes the dimension of an object in a cw complex? from the following choices.,3977577359
+670,Which of the following is correct? What is the 'reactive Leidenfrost effect' observed in non-volatile materials? based on the given context.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,"Inverse Doppler effect
+Since 1968 scientists such as Victor Veselago have speculated about the possibility of an inverse Doppler effect. The size of the Doppler shift depends on the refractive index of the medium a wave is traveling through. Some materials are capable of negative refraction, which should lead to a Doppler shift that works in a direction opposite that of a conventional Doppler shift. The first experiment that detected this effect was conducted by Nigel Seddon and Trevor Bearpark in Bristol, United Kingdom in 2003. Later, the inverse Doppler effect was observed in some inhomogeneous materials, and predicted inside a Vavilov–Cherenkov cone.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Materials that exhibit body couples and couple stresses in addition to moments produced exclusively by forces are called polar materials. Non-polar materials are then those materials with only moments of forces. In the classical branches of continuum mechanics the development of the theory of stresses is based on non-polar materials.",0.6153846153846154,local,which of the following is correct? what is the 'reactive leidenfrost effect' observed in non-volatile materials? based on the given context.,705252088
+671,Identify the correct statement: What is the reason for recycling rare metals according to the United Nations? carefully.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will lower in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Circular economy (CE), or circularity, is a model of resource production and consumption that involves sharing, leasing, reusing, repairing, refurbishing, and recycling materials and products, to extend product life cycle for as long as possible. The concept aims to tackle global challenges such as climate change, biodiversity loss, waste, and pollution by emphasizing the design-based implementation of the three base principles of the model. The main three principles required for the transformation to a circular economy are:
+
+designing out waste and pollution,
+keeping products and materials in use, and
+regenerating natural systems.
+ 
+Circular economy is defined in contradistinction to the traditional linear economy. The idea and concepts of a circular economy have been studied extensively in academia, business, and government over the past ten years. It has been gaining popularity because it can help to minimize carbon emissions and the consumption of raw materials, open up new market",0.09090909090909091,live_api,identify the correct statement: what is the reason for recycling rare metals according to the united nations? carefully.,356828073
+672,Which of the following is correct? What is emissivity? carefully.,Emissivity is a measure of how well a surface resists deformation under stress.,Emissivity is a measure of how well a surface conducts heat.,Emissivity is a measure of how well a surface absorbs and emits thermal radiation.,Emissivity is a measure of how well a surface reflects visible light.,Emissivity is a measure of how well a surface absorbs and emits sound waves.,C,"TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.
+
+In practice, realising a standard based on Violle's proposal turned out to be more difficult than expected. Impurities on the surface of the platinum could directly affect its emissivity, and in addition impurities could affect the luminous intensity by altering the melting point. Over the following half century various scientists tried to make a practical intensity standard based on incandescent platinum. The successful approach was to suspend a hollow shell of thorium dioxide with a small hole in it in a bath of molten platinum. The shell (cavity) serves as a black body, producing black-body radiation that depends on the temperature and is not sensitive to details of how the device is constructed.
+
+All of these speculations were proven correct in the following decades.",1.0,local,which of the following is correct? what is emissivity? carefully.,908492951
+673,Select the most accurate option: What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? based on the given context.,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.",0.38095238095238093,local,select the most accurate option: what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? based on the given context.,466674532
+674,Which of the following is correct? What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? based on the given context.,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a mechanism of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the mechanism. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a structure of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.",0.6,local,which of the following is correct? what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? based on the given context.,3352982441
+675,Identify the correct statement: What is the Einstein@Home project? carefully.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"This formula is based on the assumption, that the performance of the project (or rather a deviation of the actual performance from a baseline) to date gives a good indication of what a performance (or rather deviation of a performance from a baseline) will be in the future. In other words, this formula is using statistics of the project to date to predict future results. Therefore, it has to be used carefully, when the nature of the project in the future is likely to be different from the one to date (e.g. performance of the project compare to baseline at the design phase may not be a good indication of what it will be during a construction phase).
+
+Frank Dyson, the ninth Astronomer Royal, determined latitude variation caused by irregular movement of Earth's magnetic poles. He used a telescope floating in mercury and was able to detect when the poles of the earth wobbled greater than one foot. During the 1919 eclipse, Dyson was crucial in designing the Eddington experiment with Arthur Eddington to test Albert Einstein's Theory of relativity.Wilson, Margaret (1951). Ninth Astronomer Royal. Cambridge, England: W.Heffer and Sons Limited. pp. 191–193. Starting months before the eclipse, stars were photographed and carefully charted, and during the total eclipse the same stars would be photographed and charted again. If Einstein's theory was correct then the light from the selected stars would be bent passing around the sun and show more deflection than Newtonian theory alone predicted. When the photographs from the eclipse were developed it became clear that Einstein's theory had accurately predicted the position of stars. This was one of the first experiments to confirm general relativity.
+
+21st century 
+Since 2000, the Einstein Papers Project has been located at Caltech. The project was established in 1986 to assemble, preserve, translate, and publish papers selected from the literary estate of Albert Einstein and from other collections.",0.5714285714285714,local,identify the correct statement: what is the einstein@home project? carefully.,2184526434
+676,Pick the best possible answer: What is the identity operation in symmetry groups? among the listed options.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,No clear summary context available.,0.0,live_api,pick the best possible answer: what is the identity operation in symmetry groups? among the listed options.,2092912299
+677,What happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state?,"The excess base metal will often solidify, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often crystallize-out, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often dissolve, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often liquefy, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often evaporate, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.",B,"The chemical composition of the electronic cigarette aerosol varies across and within manufacturers. Limited data exists regarding their chemistry. However, researchers at Johns Hopkins University analyzed the vape clouds of popular brands such as Juul and Vuse, and found ""nearly 2,000 chemicals, the vast majority of which are unidentified.""
+The aerosol of e-cigarettes is generated when the e-liquid comes in contact with a coil heated to a temperature of roughly 100–250 °C (212–482 °F) within a chamber, which is thought to cause pyrolysis of the e-liquid and could also lead to decomposition of other liquid ingredients. The aerosol (mist) produced by an e-cigarette is commonly but inaccurately called vapor. E-cigarettes simulate the action of smoking, but without tobacco combustion. The e-cigarette aerosol looks like cigarette smoke to some extent. E-cigarettes do not produce aerosol between puffs. The e-cigarette aerosol usually contains propylene glycol, glycerin, nicotine, flavors, a",0.08333333333333333,live_api,what happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state?,453829775
+678,Determine the correct option: What is a Hilbert space in quantum mechanics? based on the given context.,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical framework is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical structure is described by a vector |Ψ⟩.,E,"The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.
+
+In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.",0.5,local,determine the correct option: what is a hilbert space in quantum mechanics? based on the given context.,2099433184
+679,Determine the correct option: Which of the following statements is true about the categorization of planetary mechanisms according to their orbital dynamics? based on the given context.,Planetary frameworks cannot be categorized based on their orbital dynamics.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the framework.",Planetary mechanisms can only be categorized as resonant or non-resonant-interacting.,"Planetary structures can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary frameworks can only be categorized as hierarchical or non-hierarchical.,D,"The universe comprises all of existence: all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments. Since the early 20th century, the field of cosmology has established that the universe has been expanding for 13.8 billion years, starting from a dense fireball in an event called the Big Bang. The observable portion of the universe is approximately 93 billion light-years in diameter at present. The total size of the universe is not known.
+Some of the earliest cosmological models of the universe were geocentric, placing Earth at the center. During the Scientific Revolution, astronomical observations led to a heliocentric model. Further observational improvements led to the realization that the Sun is one of a few hundred billion stars in the Milky Way, which is one of a few hundred billion galaxies in the observable universe. At the largest scale, galaxies are distributed uniformly and the same in all directions. At smaller scale",0.05555555555555555,live_api,determine the correct option: which of the following statements is true about the categorization of planetary mechanisms according to their orbital dynamics? based on the given context.,4143145341
+680,Choose the correct answer: What did Fresnel predict and verify with regards to total internal reflections? from the following choices.,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,No match found.,0.0,live_api,choose the correct answer: what did fresnel predict and verify with regards to total internal reflections? from the following choices.,532979639
+681,"Choose the correct answer: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? based on the given context.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"General relativity, also known as the general theory of relativity, and as Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in May 1916 and is the accepted description of the gravitation of macroscopic objects in modern physics. General relativity generalizes special relativity and refines Isaac Newton's law of universal gravitation, providing a unified description of gravity as a geometric property of space and time, or four-dimensional spacetime. In particular, the curvature of spacetime is directly related to the energy, momentum, and stress of whatever is present, including matter and radiation. The relation is specified by the Einstein field equations, a system of second-order partial differential equations. John Archibald Wheeler summarized it: ""Space-time tells matter how to move; matter tells space-time how to curve.""
+Newton's law of universal gravitation, which describes gravity in classical mechanics, can be seen as a predictio",0.047619047619047616,live_api,"choose the correct answer: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? based on the given context.",219605980
+682,What did Arthur Eddington discover about two of Einstein's types of gravitational waves?,"Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate system he used, and could only be made to propagate at the speed of gravity by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate system he used, and could only be made to propagate at the speed of sound by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate system he used, and could be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate system he used, and could not be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate system he used, and could only be made to propagate at the speed of light by choosing appropriate coordinates.",C,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+During World War I, Eddington was secretary of the Royal Astronomical Society, which meant he was the first to receive a series of letters and papers from Willem de Sitter regarding Einstein's theory of general relativity. Eddington was not only one of the few English astronomers with the mathematical skills to understand general relativity, but due to his internationalist and pacifist views inspired by his Quaker religious beliefs, was one of the few who was interested in pursuing a theory developed by a German physicist. He quickly became the chief supporter and expositor of relativity in Britain. He and Astronomer Royal Sir Frank Dyson organized two expeditions to observe a solar eclipse in 1919 to make the first empirical test of Einstein's theory: the measurement of the deflection of starlight by the Sun's gravitational field. In fact, Dyson's argument for the indispensability of Eddington's expertise in this test was what prevented Eddington from eventually having to enter military service.
+
+The first, indirect, detection of gravitational waves came in the 1970s through observation of a pair of closely orbiting neutron stars, PSR B1913+16. The explanation for the decay in their orbital period was that they were emitting gravitational waves. Einstein's prediction was confirmed on 11 February 2016, when researchers at LIGO published the first observation of gravitational waves, detected on Earth on 14 September 2015, nearly one hundred years after the prediction.",0.5454545454545454,local,what did arthur eddington discover about two of einstein's types of gravitational waves?,3871600903
+683,Pick the best possible answer: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? from the following choices.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,"The scale is reverse logarithmic: the brighter an object is, the lower its magnitude number. A difference of 1.0 in magnitude corresponds to the brightness ratio of , or about 2.512. For example, a magnitude 2.0 star is 2.512 times as bright as a magnitude 3.0 star, 6.31 times as magnitude 4.0, and 100 times as magnitude 7.0.",0.2777777777777778,local,pick the best possible answer: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? from the following choices.,226812255
+684,Which of the following is correct? What is the Ozma Problem?,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Modeling language acquisition
+The fact that during language acquisition, children are largely only exposed to positive evidence,Bowerman, M. (1988). The ""no negative evidence"" problem: How do children avoid constructing an overly general grammar. Explaining language universals. meaning that the only evidence for what is a correct form is provided, and no evidence for what is not correct,Braine, M.D.S. (1971). On two types of models of the internalization of grammars. In D.I. Slobin (Ed.), The ontogenesis of grammar: A theoretical perspective. New York: Academic Press. was a limitation for the models at the time because the now available deep learning models were not available in late 1980s.Powers, D.M.W. & Turk, C.C.R. (1989). Machine Learning of Natural Language. Springer-Verlag. .
+
+It also is often quite difficult to assign the L, L, L, L, symbols to the physical variables involved in the problem of interest. He invokes a procedure that involves the ""symmetry"" of the physical problem. This is often very difficult to apply reliably: It is unclear as to what parts of the problem that the notion of ""symmetry"" is being invoked. Is it the symmetry of the physical body that forces are acting upon, or to the points, lines or areas at which forces are being applied? What if more than one body is involved with different symmetries?",0.6,local,which of the following is correct? what is the ozma problem?,2769525654
+685,Select the most accurate option: What is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,No match found.,0.0,live_api,select the most accurate option: what is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,1893376390
+686,Identify the correct statement: What is the spin quantum number?,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+There is another quantity of angular momentum, called the orbital angular momentum (azimuthal quantum number ), that comes in increments of , which represent the angular moment due to quarks orbiting around each other. The total angular momentum (total angular momentum quantum number J) of a particle is therefore the combination of intrinsic angular momentum (spin) and orbital angular momentum. It can take any value from  to , in increments of 1.
++ Baryon angular momentum quantum numbers for  Spin, S Orbital angular momentum, L Total angular momentum, J Parity, P Condensed notation, JP  0    +  + 1  ,   −  −, − 2  ,   +  +, + 3  ,   −  −, −  0    +  + 1  , ,   −  −, −, − 2  , , ,   +  +, +, +, + 3  , , ,   −  −, −, −, −",0.5,local,identify the correct statement: what is the spin quantum number?,3851391748
+687,Which of the following is correct? What is the significance of probability amplitudes in quantum mechanics? from the following choices.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).
+
+Consider a quantum circuit , which consists of  gates, , where each  comes from a universal gate set and acts on at most two qubits.
+To understand what the sum of histories is, we visualize the evolution of a quantum state given a quantum circuit as a tree. The root is the input , and each node in the tree has  children, each representing a state in . The weight on a tree edge from a node in -th level representing a state  to a node in -th level  representing a state  is , the amplitude of  after applying  on . The transition amplitude of a root-to-leaf path is the product of all the weights on the edges along the path. To get the probability of the final state being , we sum up the amplitudes of all root-to-leave paths that ends at a node representing .
+
+Quantum tunneling 
+Quantum mechanics, however, allows the alpha particle to escape via quantum tunneling. The quantum tunneling theory of alpha decay, independently developed by George Gamow and by Ronald Wilfred Gurney and Edward Condon in 1928, was hailed as a very striking confirmation of quantum theory. Essentially, the alpha particle escapes from the nucleus not by acquiring enough energy to pass over the wall confining it, but by tunneling through the wall. Gurney and Condon made the following observation in their paper on it:
+It has hitherto been necessary to postulate some special arbitrary ""instability"" of the nucleus, but in the following note, it is pointed out that disintegration is a natural consequence of the laws of quantum mechanics without any special hypothesis... Much has been written of the explosive violence with which the α-particle is hurled from its place in the nucleus. But from the process pictured above, one would rather say that the α-particle almost slips away unnoticed.",0.6666666666666666,local,which of the following is correct? what is the significance of probability amplitudes in quantum mechanics? from the following choices.,41879740
+688,Choose the correct answer: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.",0.2857142857142857,local,choose the correct answer: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,4061823486
+689,Select the most accurate option: What is the role of the Higgs boson in the Standard Model? from the following choices.,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+Other names connected with the city include physicist Max Born, a principle founder of Quantum mechanics and Nobel laureate; Charles Darwin, the biologist who propounded the theory of natural selection; David Hume, philosopher, economist and historian; James Hutton, regarded as the ""Father of Geology""; Joseph Black, the chemist who discovered magnesium and carbon dioxide, and one of the founders of Thermodynamics; pioneering medical researchers Joseph Lister and James Young Simpson; chemist and discoverer of the element nitrogen Daniel Rutherford; Colin Maclaurin, mathematician and developer of the Maclaurin series, and Ian Wilmut, the geneticist involved in the cloning of Dolly the sheep just outside Edinburgh, at the Roslin Institute. The stuffed carcass of Dolly the sheep is now on display in the National Museum of Scotland. The latest in a long line of science celebrities associated with the city is theoretical physicist, Nobel laureate and professor emeritus at the University of Edinburgh Peter Higgs, born in Newcastle but resident in Edinburgh for most of his academic career, after whom the Higgs boson particle has been named.",0.45454545454545453,local,select the most accurate option: what is the role of the higgs boson in the standard model? from the following choices.,809846257
+690,Determine the correct option: What is a phageome? among the listed options.,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.",0.42857142857142855,local,determine the correct option: what is a phageome? among the listed options.,453037923
+691,Which of the following is correct? Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+Concept 
+Diffraction is a general phenomenon of waves, occuring whenever a wavefront is obstructed. The obstruction may be solidly blocking the wave or transparent and shifting the phase of the wave. The waves beyond the obstacle interfere causing a diffraction pattern. The diffraction pattern cannot be predicted by the straight line trajectories of geometrical optics. For a simple example, a strong light source blocked by a solid object does not show a crisp dark shadow when examined carefully.
+
+If light consisted strictly of ordinary or classical particles, and these particles were fired in a straight line through a slit and allowed to strike a screen on the other side, we would expect to see a pattern corresponding to the size and shape of the slit. However, when this ""single-slit experiment"" is actually performed, the pattern on the screen is a diffraction pattern in which the light is spread out. The smaller the slit, the greater the angle of spread. The top portion of the image shows the central portion of the pattern formed when a red laser illuminates a slit and, if one looks carefully, two faint side bands. More bands can be seen with a more highly refined apparatus. The wave theory of light explains the pattern as being the result of the interference of light waves from the slit.",0.6470588235294118,local,which of the following is correct? which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? carefully.,1944568692
+692,Pick the best possible answer: What is the mechanism of FTIR?,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"A special type of integrator, used at a point where only moderate accuracy was needed, was based on a steel ball, instead of a disc. It had two inputs, one to rotate the ball, and the other to define the angle of the ball's rotating axis. That axis was always in a plane that contained the axes of two movement pick-off rollers, quite similar to the mechanism of a rolling-ball computer mouse (in that mechanism, the pick-off rollers were roughly the same diameter as the ball). The pick-off roller axes were at right angles.
+
+Because its mechanism is primitive compared to most modern woodwinds, makers have occasionally attempted to ""reinvent"" the bassoon. In the 1960s, Giles Brindley began to develop what he called the ""logical bassoon"", which aimed to improve intonation and evenness of tone through use of an electrically activated mechanism, making possible key combinations too complex for the human hand to manage. Brindley's logical bassoon was never marketed.
+
+This branch of mathematics deals with the long-term qualitative behavior of dynamical systems. Here, the focus is not on finding precise solutions to the equations defining the dynamical system (which is often hopeless), but rather to answer questions like ""Will the system settle down to a steady state in the long term, and if so, what are the possible attractors?"" or ""Does the long-term behavior of the system depend on its initial condition?""",0.6666666666666666,local,pick the best possible answer: what is the mechanism of ftir?,558435642
+693,"How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft?",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"Lidar (, an acronym of light detection and ranging or laser imaging, detection, and ranging, often stylized LiDAR) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed direction (e.g., vertical) or it may scan directions, in a special combination of 3D scanning and laser scanning.
+
+Lidar has terrestrial, airborne, and mobile uses. It is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swathe mapping (ALSM), and laser altimetry. It is used to make digital 3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has also been increasingly used in control and navigation for autonomous cars and for the",0.13333333333333333,live_api,"how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft?",3221272764
+694,Pick the best possible answer: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? based on the given context.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.5,local,pick the best possible answer: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? based on the given context.,3603323187
+695,Which of the following is correct? What is the isophotal diameter used for in measuring a galaxy's size? from the following choices.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"During the following decade, CMB anisotropies were further investigated by a large number of ground-based and balloon experiments. In 2000–2001, several experiments, most notably BOOMERanG, found the shape of the universe to be spatially almost flat by measuring the typical angular size (the size on the sky) of the anisotropies.
+
+Other notable spiral galaxies in Canes Venatici are the Sunflower Galaxy (M63, NGC 5055), M94 (NGC 4736), and M106 (NGC 4258).
+ M63, the Sunflower Galaxy, was named for its appearance in large amateur telescopes. It is a spiral galaxy with an integrated magnitude of 9.0.
+ M94 (NGC 4736) is a small face-on spiral galaxy with approximate magnitude 8.0, about 15 million light-years from Earth.
+ NGC 4631 is a barred spiral galaxy, which is one of the largest and brightest edge-on galaxies in the sky.
+ M3 (NGC 5272) is a globular cluster 32,000 light-years from Earth. It is 18′ in diameter, and at magnitude 6.3 is bright enough to be seen with binoculars. It can even be seen with the naked eye under particularly dark skies.
+ M94, also cataloged as NGC 4736, is a face-on spiral galaxy 15 million light-years from Earth. It has very tight spiral arms and a bright core. The outskirts of the galaxy are incredibly luminous in the ultraviolet because of a ring of new stars surrounding the core 7,000 light-years in diameter. Though astronomers are not sure what has caused this ring of new stars, some hypothesize that it is from shock waves caused by a bar that is thus far invisible.
+
+In the 2nd century CE, Ptolemy estimated the mean distance of the Sun as  times Earth's radius. To determine this value, Ptolemy started by measuring the Moon's parallax, finding what amounted to a horizontal lunar parallax of 1° 26′, which was much too large. He then derived a maximum lunar distance of  Earth radii. Because of cancelling errors in his parallax figure, his theory of the Moon's orbit, and other factors, this figure was approximately correct.van Helden 1985, pp. 16–19.Ptolemy's Almagest, translated and annotated by G. J. Toomer, London: Duckworth, 1984, p. 251. . He then measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon at the Moon's greatest distance, and from records of lunar eclipses, he estimated this apparent diameter, as well as the apparent diameter of the shadow cone of Earth traversed by the Moon during a lunar eclipse. Given these data, the distance of the Sun from Earth can be trigonometrically computed to be  Earth radii. This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure. Although Ptolemy's procedure is theoretically workable, it is very sensitive to small changes in the data, so much so that changing a measurement by a few per cent can make the solar distance infinite.",0.7272727272727273,local,which of the following is correct? what is the isophotal diameter used for in measuring a galaxy's size? from the following choices.,2303129968
+696,Determine the correct option: Which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? among the listed options.,"Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Addiction is a neuropsychological disorder characterized by a persistent and intense urge to use a drug or engage in a behavior that produces an immediate psychological reward, despite substantial harm and other negative consequences. Repetitive drug use can alter brain function in synapses similar to natural rewards like food or falling in love in ways that perpetuate craving and weakens self-control for people with pre-existing vulnerabilities. This phenomenon – drugs reshaping brain function – has led to an understanding of addiction as a brain disorder with a complex variety of psychosocial as well as neurobiological factors that are implicated in the development of addiction. While mice given cocaine showed the compulsive and involuntary nature of addiction, for humans this is more complex, related to behavior or personality traits. Animal models have showed that addiction is heavily modulated by social interactions. When given a choice, rats consistently prefer social interaction",0.13333333333333333,live_api,determine the correct option: which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? among the listed options.,4036005062
+697,Select the most accurate option: What is a trophic level in an ecological pyramid? carefully.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecomechanism.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.",0.4444444444444444,local,select the most accurate option: what is a trophic level in an ecological pyramid? carefully.,4171571641
+698,Determine the correct option: What is the Kutta condition? based on the given context.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,determine the correct option: what is the kutta condition? based on the given context.,1363341503
+699,Choose the correct answer: What is a magnetic monopole in particle physics? based on the given context.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.",0.4,local,choose the correct answer: what is a magnetic monopole in particle physics? based on the given context.,4051190415
+700,Which of the following is correct? What is accelerator-based light-ion fusion? among the listed options.,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This approach is relatively difficult to implement and requires a complex structure of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This approach is relatively difficult to implement and requires a complex mechanism of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,"Nuclear weapons design means the physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate. There are three existing basic design types:
+
+Pure fission weapons are the simplest, least technically demanding, were the first nuclear weapons built, and so far the only type ever used in warfare, by the United States on Japan in World War II.
+Boosted fission weapons are fission weapons that use nuclear fusion reactions to generate high-energy neutrons that accelerate the fission chain reaction and increase its efficiency. Boosting can more than double the weapon's fission energy yield.
+Staged thermonuclear weapons are arrangements of two or more ""stages"", most usually two, where the weapon derives a significant fraction of its energy from nuclear fusion (as well as, usually, nuclear fission). The first stage is typically a boosted fission weapon (except for the earliest thermonuclear weapons, which used a pure fission weapon). Its detonati",0.18181818181818182,live_api,which of the following is correct? what is accelerator-based light-ion fusion? among the listed options.,3280449688
+701,Which of the following is correct? What is the contrast between natural convection and forced convection? based on the given context.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,"Rainfall tends to be associated with Atlantic depressions or with convection. In summer, convection caused by solar surface heating sometimes forms shower clouds and a large proportion of rainfall comes from showers and thunderstorms at this time of year. The wettest months are November and December and on the highest parts of the moor the average annual total rainfall is over . This compares with less than  in the lower land to the east around the Exe Estuary, which is in the rain shadow of the moor. Due to the influence of the Gulf Stream snowfall is not common, though due to its high altitude it is more vulnerable to snowfall than surrounding regions.Webb 2006, p. 31
+
+From the 1930s to the late 1950s, works by Vening-Meinesz, Holmes, Umbgrove, and numerous others outlined concepts that were close or nearly identical to modern plate tectonics theory, which has encompassed and superseded continental drift. The English geologist Arthur Holmes proposed in 1920 that plate junctions might lie beneath the sea, and in 1928 that convection currents within the mantle might be the driving force. Holmes's views were particularly influential: in his bestselling textbook, Principles of Physical Geology, he included a chapter on continental drift, proposing that Earth's mantle contained convection cells which dissipated radioactive heat and moved the crust at the surface. Holmes's proposal resolved the phase disequilibrium objection (the underlying fluid was kept from solidifying by radioactive heating from the core). However, scientific communication in the 1930s and 1940s was inhibited by World War II, and the theory still required work to overcome the orogeny and isostasy objections. Worse, the most viable forms of the theory predicted the existence of convection cell boundaries reaching deep into the Earth, which had not been observed.
+
+Without workable alternatives to explain the stripes, geophysicists were forced to conclude that Holmes had been right: ocean rifts were sites of perpetual orogeny at the boundaries of convection cells. By 1967, barely two decades after discovery of the mid-oceanic rifts, and a decade after discovery of the striping, plate tectonics had become axiomatic to modern geophysics.",0.2727272727272727,local,which of the following is correct? what is the contrast between natural convection and forced convection? based on the given context.,4083049989
+702,What is the reason for the formation of stars exclusively within molecular clouds?,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.7142857142857143,local,what is the reason for the formation of stars exclusively within molecular clouds?,2120809123
+703,Identify the correct statement: What is Hesse's principle of transfer in geometry? among the listed options.,Hesse's principle of transfer is a concept in biology that explains the transfer of genetic information from one generation to another.,Hesse's principle of transfer is a concept in chemistry that explains the transfer of electrons between atoms in a chemical reaction.,Hesse's principle of transfer is a concept in physics that explains the transfer of energy from one object to another.,Hesse's principle of transfer is a concept in economics that explains the transfer of wealth from one individual to another.,"Hesse's principle of transfer is a concept in geometry that states that if the points of the projective line P1 are depicted by a rational normal curve in Pn, then the group of the projective transformations of Pn that preserve the curve is isomorphic to the group of the projective transformations of P1.",E,No match found.,0.0,live_api,identify the correct statement: what is hesse's principle of transfer in geometry? among the listed options.,972229184
+704,Determine the correct option: What is the Penrose process? based on the given context.,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.875,local,determine the correct option: what is the penrose process? based on the given context.,1847033044
+705,Identify the correct statement: What is the reason for the formation of stars exclusively within molecular clouds? based on the given context.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.38461538461538464,local,identify the correct statement: what is the reason for the formation of stars exclusively within molecular clouds? based on the given context.,4268717788
+706,"Which of the following is correct? What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope? from the following choices.","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.
+
+When Ernst Öpik estimated the density of visual binary stars in 1916, he found that 40 Eridani B had a density of over  times that of the Sun, which was so high that he called it ""impossible"".
+As Eddington pointed out in 1924, densities of this order implied that, according to the theory of general relativity, the light from Sirius B should be gravitationally redshifted.
+A number of experimenters initially claimed to have identified the effect using astronomical measurements, and the effect was considered to have been finally identified in the spectral lines of the star Sirius B by W.S. Adams in 1925.Hetherington, N. S., ""Sirius B and the gravitational redshift - an historical review"", Quarterly Journal Royal Astronomical Society, vol. 21, Sept. 1980, pp. 246–252. Accessed 6 April 2017. However, measurements by Adams have been criticized as being too lowHolberg, J. B., ""Sirius B and the Measurement of the Gravitational Redshift"", Journal for the History of Astronomy, vol. 41, 1, 2010, pp. 41–64. Accessed 6 April 2017. and these observations are now considered to be measurements of spectra that are unusable because of scattered light from the primary, Sirius A. The first accurate measurement of the gravitational redshift of a white dwarf was done by Popper in 1954, measuring a 21 km/s gravitational redshift of 40 Eridani B. The redshift of Sirius B was finally measured by Greenstein et al. in 1971, obtaining the value for the gravitational redshift of 89±16 km/s, with more accurate measurements by the Hubble Space Telescope, showing 80.4±4.8 km/s.Effective Temperature, Radius, and Gravitational Redshift of Sirius B, J. L. Greenstein, J.B. Oke, H. L. Shipman, Astrophysical Journal 169 (Nov. 1, 1971), pp. 563–566.
+
+On larger scales, large galaxy redshift surveys may be used to make a three-dimensional map of the galaxy distribution. These maps are slightly distorted because distances are estimated from observed redshifts; the redshift contains a contribution from the galaxy's so-called peculiar velocity in addition to the dominant Hubble expansion term. On average, superclusters are expanding more slowly than the cosmic mean due to their gravity, while voids are expanding faster than average. In a redshift map, galaxies in front of a supercluster have excess radial velocities towards it and have redshifts slightly higher than their distance would imply, while galaxies behind the supercluster have redshifts slightly low for their distance. This effect causes superclusters to appear squashed in the radial direction, and likewise voids are stretched. Their angular positions are unaffected. This effect is not detectable for any one structure since the true shape is not known, but can be measured by averaging over many structures. It was predicted quantitatively by Nick Kaiser in 1987, and first decisively measured in 2001 by the 2dF Galaxy Redshift Survey. Results are in agreement with the Lambda-CDM model.",0.625,local,"which of the following is correct? what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope? from the following choices.",2452675746
+707,Pick the best possible answer: What is the variation between redshift due to the expansion of the universe and Doppler redshift? based on the given context.,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the boost of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no variation between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the raise of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.42857142857142855,local,pick the best possible answer: what is the variation between redshift due to the expansion of the universe and doppler redshift? based on the given context.,1922246073
+708,Identify the correct statement: What is the relevant type of coherence for the Young's double-slit interferometer? based on the given context.,Visibility,Coherence time,Spatial coherence,Coherence length,Diameter of the coherence area (Ac),E,"If waves are emitted from an extended source, this can lead to incoherence in the transversal direction. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherence length. In the case of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting pattern on a screen would look like two single-slit diffraction patterns.",0.35714285714285715,local,identify the correct statement: what is the relevant type of coherence for the young's double-slit interferometer? based on the given context.,267785998
+709,"Which of the following is correct? Who proposed the principle of ""complexity from noise"" and when was it first introduced? from the following choices.",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.
+
+From 1796 to 1818 the Church began operating in Sri Lanka (formerly Ceylon), following the 1796 start of British colonisation, when the first services were held for the British civil and military personnel. In 1799, the first Colonial Chaplain was appointed, following which CMS and SPG missionaries began their work, in 1818 and 1844 respectively. Subsequently, the Church of Ceylon was established: in 1845 the diocese of Colombo was inaugurated, with the appointment of James Chapman as Bishop of Colombo. It served as an extra-provincial jurisdiction of the archbishop of Canterbury, who served as its metropolitan.
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.75,local,"which of the following is correct? who proposed the principle of ""complexity from noise"" and when was it first introduced? from the following choices.",1983414371
+710,Select the most accurate option: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,select the most accurate option: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,3170708881
+711,Pick the best possible answer: What is the decay energy for the free neutron decay process? from the following choices.,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+The most common forms of radioactive decay are:
+ Alpha decay: this process is caused when the nucleus emits an alpha particle, which is a helium nucleus consisting of two protons and two neutrons. The result of the emission is a new element with a lower atomic number.
+ Beta decay (and electron capture): these processes are regulated by the weak force, and result from a transformation of a neutron into a proton, or a proton into a neutron. The neutron to proton transition is accompanied by the emission of an electron and an antineutrino, while proton to neutron transition (except in electron capture) causes the emission of a positron and a neutrino. The electron or positron emissions are called beta particles. Beta decay either increases or decreases the atomic number of the nucleus by one. Electron capture is more common than positron emission, because it requires less energy. In this type of decay, an electron is absorbed by the nucleus, rather than a positron emitted from the nucleus. A neutrino is still emitted in this process, and a proton changes to a neutron.
+ Gamma decay: this process results from a change in the energy level of the nucleus to a lower state, resulting in the emission of electromagnetic radiation. The excited state of a nucleus which results in gamma emission usually occurs following the emission of an alpha or a beta particle. Thus, gamma decay usually follows alpha or beta decay.
+
+One curiosity is why alpha particles, helium nuclei, should be preferentially emitted as opposed to other particles like a single proton or neutron or other atomic nuclei.These other decay modes, while possible, are extremely rare compared to alpha decay. Part of the reason is the high binding energy of the alpha particle, which means that its mass is less than the sum of the masses of two free protons and two free neutrons. This increases the disintegration energy. Computing the total disintegration energy given by the equation",0.6363636363636364,local,pick the best possible answer: what is the decay energy for the free neutron decay process? from the following choices.,2127181710
+712,Pick the best possible answer: What is indirect photophoresis?,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,pick the best possible answer: what is indirect photophoresis?,462057967
+713,"Pick the best possible answer: Who proposed the concept of ""maximal acceleration""? among the listed options.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Dextroamphetamine is a central nervous system (CNS) stimulant and enantiomer of amphetamine that is used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. It is also used illicitly to enhance cognitive and athletic performance, and recreationally as an aphrodisiac and euphoriant. Dextroamphetamine is generally regarded as the prototypical stimulant.
+The amphetamine molecule exists as two enantiomers, levoamphetamine and dextroamphetamine. Dextroamphetamine is the dextrorotatory, or 'right-handed', enantiomer and exhibits more pronounced effects on the central nervous system than levoamphetamine. Pharmaceutical dextroamphetamine sulfate is available as both a brand name and generic drug in a variety of dosage forms. Dextroamphetamine is sometimes prescribed as the inactive prodrug lisdexamfetamine.
+Side effects of dextroamphetamine at therapeutic doses include elevated mood, decreased appetite, dry mouth, bruxism, headache, increased heart rate, insomni",0.0,live_api,"pick the best possible answer: who proposed the concept of ""maximal acceleration""? among the listed options.",3652858664
+714,What is the Maxwell's Demon thought experiment?,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an increase in temperature in one part and a decrease in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a decrease in temperature in one part and an increase in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a decrease in temperature in one part and an increase in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an increase in temperature in one part and a decrease in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a decrease in temperature in one part and an increase in temperature in the other, in accordance with the second law of thermodynamics.",C,"In the midst of these tenure issues in 1935, after extensive correspondence with Albert Einstein, Schrödinger proposed what is now called the ""Schrödinger's cat"" thought experiment.
+
+Interpretations of the experiment 
+Like the Schrödinger's cat thought experiment, the double-slit experiment is often used to highlight the differences and similarities between the various interpretations of quantum mechanics.
+
+Quantum suicide is a thought experiment in quantum mechanics and the philosophy of physics that can purportedly distinguish between the Copenhagen interpretation of quantum mechanics and the many-worlds interpretation by a variation of the Schrödinger's cat thought experiment, from the cat's point of view. Quantum immortality refers to the subjective experience of surviving quantum suicide. Most experts believe the experiment would not work in the real world, because the world with the surviving experimenter has a lower ""measure"" than the world before the experiment, making it less likely that the experimenter will experience their survival.",0.6,local,what is the maxwell's demon thought experiment?,3678604667
+715,"Determine the correct option: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.","MOND is a principle that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a principle that enhances the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a principle that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a principle that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"determine the correct option: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.",4106823900
+716,Choose the correct answer: Which of the following statements accurately describes the characteristics of gravitational waves? from the following choices.,"Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.","Gravitational waves have an amplitude denoted by λ, which represents the distance between points of maximum stretch or squeeze. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by f, which is the frequency of the wave's oscillation.","Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.",C,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Gravitational waves
+Gravitational waves are ripples in the curvature of spacetime that propagate as waves at the speed of light, generated in certain gravitational interactions that propagate outward from their source. Gravitational-wave astronomy is an emerging branch of observational astronomy which aims to use gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs, neutron stars, and black holes; and events such as supernovae, and the formation of the early universe shortly after the Big Bang.
+
+For waves propagating in vacuum, as is possible for electromagnetic waves or gravitational waves, only the relative velocity between the observer and the source needs to be considered. For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source are relative to the medium in which the waves are transmitted. The total Doppler effect in such cases may therefore result from motion of the source, motion of the observer, motion of the medium, or any combination thereof.",0.25,local,choose the correct answer: which of the following statements accurately describes the characteristics of gravitational waves? from the following choices.,2648229181
+717,Which of the following is correct? What is the function of mammary glands in mammals?,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.7142857142857143,local,which of the following is correct? what is the function of mammary glands in mammals?,334738227
+718,Identify the correct statement: What is the significance of the speed of light in vacuum? from the following choices.,The speed of light in vacuum is only relevant when measuring the one-way speed of light.,The speed of light in vacuum is only relevant when measuring the two-way speed of light.,The speed of light in vacuum is independent of the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is dependent on the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is only relevant when c appears explicitly in the units of measurement.,C,"This is the speed of light in vacuum. Thus Maxwell's equations connect the vacuum permittivity , the vacuum permeability , and the speed of light, c0, via the above equation. This relationship had been discovered by Wilhelm Eduard Weber and Rudolf Kohlrausch prior to the development of Maxwell's electrodynamics, however Maxwell was the first to produce a field theory consistent with waves traveling at the speed of light.
+
+where
+ m0 is the rest mass of the body,
+ c is the speed of light in vacuum,
+  is the rest energy.
+
+Cosmological models employing a variable speed of light have been proposed to resolve the horizon problem of and provide an alternative to cosmic inflation. In the VSL models, the fundamental constant c, denoting the speed of light in vacuum, is greater in the early universe than its present value, effectively increasing the particle horizon at the time of decoupling sufficiently to account for the observed isotropy of the CMB.",0.3333333333333333,local,identify the correct statement: what is the significance of the speed of light in vacuum? from the following choices.,420837038
+719,Which of the following is correct? What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes?,The atmosphere is a structure that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized frameworks and time-varying forcing from recurrent seasons.",The atmosphere is a structure that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic structure with no order or organization.,The atmosphere is a completely ordered mechanism with no chaos or randomness.,B,No match found.,0.0,live_api,which of the following is correct? what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes?,1433584973
+720,Select the most accurate option: What is a crossover experiment? based on the given context.,An experiment that involves crossing over two different types of materials to create a new material.,"A type of experiment used to distinguish between different mechanisms proposed for a chemical reaction, such as intermolecular vs. intramolecular mechanisms.",An experiment that involves crossing over two different types of organisms to create a hybrid.,An experiment that involves crossing over two different types of cells to create a new cell.,An experiment that involves crossing over two different chemicals to create a new substance.,B,"A randomized controlled trial (RCT) is a type of statistical experiment designed to evaluate the efficacy or safety of an intervention by minimizing bias through the random allocation of participants to one or more comparison groups.  
+In this approach, at least one group receives the intervention or process under study (such as a drug, surgical procedure, medical device or diet), while the other groups receive an alternative treatment, a placebo, or standard care.  
+RCTs are a fundamental methodology in modern clinical trials and have been widely considered one of the highest-quality sources of evidence in evidence-based medicine, due to their ability to reduce selection bias and the influence of confounding factors. However, they have also been criticized for failing to reduce bias in some cases.
+Participants who enroll in RCTs differ from one another in known and unknown ways that can influence study outcomes, and yet cannot be directly controlled. By randomly allocating participant",0.2222222222222222,live_api,select the most accurate option: what is a crossover experiment? based on the given context.,927735293
+721,"Identify the correct statement: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"identify the correct statement: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",3541155528
+722,Pick the best possible answer: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,pick the best possible answer: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,2862505631
+723,Determine the correct option: What did Arthur Eddington discover about two of Einstein's types of gravitational waves? among the listed options.,"Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate mechanism he used, and could only be made to propagate at the speed of gravity by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate mechanism he used, and could only be made to propagate at the speed of sound by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could not be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of light by choosing appropriate coordinates.",C,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.0,live_api,determine the correct option: what did arthur eddington discover about two of einstein's types of gravitational waves? among the listed options.,235421175
+724,Pick the best possible answer: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? among the listed options.,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,pick the best possible answer: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? among the listed options.,1684151722
+725,Pick the best possible answer: What is a planetary structure? based on the given context.,A framework of planets that are all located in the same solar framework.,A mechanism of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star mechanism.,A framework of planets that are all located in the same galaxy.,A structure of planets that are all made of gas.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+It is not possible in general to unambiguously define what is the minimal number of symbols required to describe a given string (given a specific description mechanism). In this context, the terms string and number may be used interchangeably, since a number is actually a string of symbols, e.g. an English word (like the word ""eleven"" used in the paradox) while, on the other hand, it is possible to refer to any word with a number, e.g. by the number of its position in a given dictionary or by suitable encoding. Some long strings can be described exactly using fewer symbols than those required by their full representation, as is often achieved using data compression. The complexity of a given string is then defined as the minimal length that a description requires in order to (unambiguously) refer to the full representation of that string.",0.6666666666666666,local,pick the best possible answer: what is a planetary structure? based on the given context.,3554693929
+726,Select the most accurate option: What is the synapstor or synapse transistor? among the listed options.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term depression for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and inactivity-based forgetting.,E,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.36363636363636365,local,select the most accurate option: what is the synapstor or synapse transistor? among the listed options.,3351460227
+727,Identify the correct statement: What is the piezoelectric strain coefficient for AT-cut quartz crystals? carefully.,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"Piezoelectricity (, US: ) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied mechanical stress.
+The piezoelectric effect results from the linear electromechanical interaction between the mechanical and electrical states in crystalline materials with no inversion symmetry. The piezoelectric effect is a reversible process:  materials exhibiting the piezoelectric effect  also exhibit the reverse piezoelectric effect, the internal generation of a mechanical strain resulting from an applied electric field. For example, lead zirconate titanate crystals will generate measurable piezoelectricity when their static structure is deformed by about 0.1% of the original dimension. Conversely, those same crystals will change about 0.1% of their static dimension when an external electric field is applied. The inverse piezoelectric effect is used in the production of",0.3,local,identify the correct statement: what is the piezoelectric strain coefficient for at-cut quartz crystals? carefully.,3541325276
+728,Pick the best possible answer: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? from the following choices.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is significant for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is essential for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,pick the best possible answer: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? from the following choices.,2352182394
+729,What is a uniform tiling in the hyperbolic plane?,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,"All regular polygons, {a}.
+ Regular tetrahedron: {3,3}
+ In general, all regular n-simplexes, {3,3,...,3}
+ The regular 24-cell in 4 dimensions, {3,4,3}.
+ The great 120-cell {5,5/2,5} and the grand stellated 120-cell {5/2,5,5/2}
+The self-dual (infinite) regular Euclidean honeycombs are:
+ Apeirogon: {∞}
+ Square tiling: {4,4}
+ Cubic honeycomb: {4,3,4}
+ In general, all regular n-dimensional Euclidean hypercubic honeycombs: {4,3,...,3,4}.
+The self-dual (infinite) regular hyperbolic honeycombs are:
+ Compact hyperbolic tilings: {5,5}, {6,6}, ... {p,p}.
+ Paracompact hyperbolic tiling: {∞,∞}
+ Compact hyperbolic honeycombs: {3,5,3}, {5,3,5}, and {5,3,3,5}
+ Paracompact hyperbolic honeycombs: {3,6,3}, {6,3,6}, {4,4,4}, and {3,3,4,3,3}
+
+In the hyperbolic case, the Hartman–Grobman theorem gives the conditions for the existence of a continuous function that maps the neighborhood of the fixed point of the map to the linear map J · x. The hyperbolic case is also structurally stable.  Small changes in the vector field will only produce small changes in the Poincaré map and these small changes will reflect in small changes in the position of the eigenvalues of J in the complex plane, implying that the map is still hyperbolic.
+
+Discrete geometry
+Discrete geometry and combinatorial geometry are about combinatorial properties of discrete collections of geometrical objects. A long-standing topic in discrete geometry is tiling of the plane.",0.75,local,what is a uniform tiling in the hyperbolic plane?,936108199
+730,Determine the correct option: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? based on the given context.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,determine the correct option: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? based on the given context.,1013631513
+731,Select the most accurate option: What is the application of Memristor? carefully.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control mechanisms, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"Artificial intelligence is the capability of computational systems to perform tasks that are typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and decision-making. Artificial intelligence has been used in applications throughout industry and academia. Within the field of Artificial Intelligence, there are multiple subfields. The subfield of machine learning has been used for various scientific and commercial purposes, including language translation, image recognition, decision-making, credit scoring, and e-commerce. In recent years, massive advancements have been made in the field of generative artificial intelligence, which uses generative models to generate text, images, videos, and other forms of data. This article describes applications of AI in different sectors.",0.0,live_api,select the most accurate option: what is the application of memristor? carefully.,3154199277
+732,Pick the best possible answer: What was the aim of the Gravity Probe B (GP-B) mission? carefully.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,No match found.,0.0,live_api,pick the best possible answer: what was the aim of the gravity probe b (gp-b) mission? carefully.,73893815
+733,Choose the correct answer: What is the contrast between probability mass function (PMF) and probability density function (PDF)? based on the given context.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability concept.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+Random variables with density
+Now consider a random variable  which has a probability density function given by a function  on the real number line. This means that the probability of  taking on any value in a given open interval is given by the integral of  over that interval. The expectation of  is then given by the integral
+
+The normal distribution with zero mean and unit standard deviation is known as the standard normal distribution, given by the probability density function",0.35714285714285715,local,choose the correct answer: what is the contrast between probability mass function (pmf) and probability density function (pdf)? based on the given context.,1779708069
+734,Identify the correct statement: What is the Liouville density? based on the given context.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is the liouville density? based on the given context.,1147573387
+735,Choose the correct answer: What is the function of mammary glands in mammals? based on the given context.,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.4,local,choose the correct answer: what is the function of mammary glands in mammals? based on the given context.,3200901776
+736,Pick the best possible answer: What is the reason for heating metals to a temperature just above the upper critical temperature? from the following choices.,"To prevent the grains of solution from growing too large, which minimizes mechanical properties such as toughness, shear strength, and tensile strength.","To boost the size of the grains of solution, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too large, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too small, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To enhance the size of the grains of solution, which lowers mechanical properties such as toughness, shear strength, and tensile strength.",C,"At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of the material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with ""ceramic"" in the context of ceramic capacitors for just this reason.",0.2857142857142857,local,pick the best possible answer: what is the reason for heating metals to a temperature just above the upper critical temperature? from the following choices.,321550849
+737,Select the most accurate option: What is the formalism that angular momentum is associated with in rotational invariance? from the following choices.,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.
+
+Stationary-action principle 
+In classical mechanics it can be shown that the rotational invariance of action functionals implies conservation of angular momentum. The action is defined in classical physics as a functional of positions,  often represented by the use of square brackets, and the final and initial times. It assumes the following form in cartesian coordinates:where the repeated indices indicate summation over the index. If the action is invariant of an infinitesimal transformation, it can be mathematically stated as: .",0.6153846153846154,local,select the most accurate option: what is the formalism that angular momentum is associated with in rotational invariance? from the following choices.,1110364925
+738,Choose the correct answer: What is the formalism that angular momentum is associated with in rotational invariance?,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.
+
+Lagrangian formalism 
+In Lagrangian mechanics, angular momentum for rotation around a given axis, is the conjugate momentum of the generalized coordinate of the angle around the same axis. For example, , the angular momentum around the z axis, is:",0.7,local,choose the correct answer: what is the formalism that angular momentum is associated with in rotational invariance?,1179062793
+739,Determine the correct option: What is the Maxwell's Demon thought experiment? among the listed options.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an enhance in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a reduce in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an boost in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,determine the correct option: what is the maxwell's demon thought experiment? among the listed options.,2100380669
+740,Identify the correct statement: What are permutation-inversion groups? from the following choices.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.,0.0,live_api,identify the correct statement: what are permutation-inversion groups? from the following choices.,3944561002
+741,Select the most accurate option: What is the application of Memristor? carefully.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control frameworks, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"Artificial intelligence is the capability of computational systems to perform tasks that are typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and decision-making. Artificial intelligence has been used in applications throughout industry and academia. Within the field of Artificial Intelligence, there are multiple subfields. The subfield of machine learning has been used for various scientific and commercial purposes, including language translation, image recognition, decision-making, credit scoring, and e-commerce. In recent years, massive advancements have been made in the field of generative artificial intelligence, which uses generative models to generate text, images, videos, and other forms of data. This article describes applications of AI in different sectors.",0.0,live_api,select the most accurate option: what is the application of memristor? carefully.,3154199277
+742,What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics?,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,"Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+On the other hand, in quantum theory, if a perturbative element of compressive work is done rapidly, it changes the occupation numbers and energies of the eigenstates in proportion to the transition moment integral and in accordance with time-dependent perturbation theory, as well as perturbing the functional form of the eigenstates themselves. In that theory, such a rapid change is said not to be adiabatic, and the contrary word diabatic is applied to it.
+
+Quantum mechanics and quantum statistical mechanics, however, use the word adiabatic in a very different sense, one that can at times seem almost opposite to the classical thermodynamic sense. In quantum theory, the word adiabatic can mean something perhaps near isentropic, or perhaps near quasi-static, but the usage of the word is very different between the two disciplines.",0.7142857142857143,local,what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics?,3428207666
+743,Pick the best possible answer: What is the Optical Signal-to-Noise Ratio (OSNR)? carefully.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in mechanisms where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.4,local,pick the best possible answer: what is the optical signal-to-noise ratio (osnr)? carefully.,1738259554
+744,Determine the correct option: What is the interstellar medium (ISM)? from the following choices.,"The matter and radiation that exist in the space between the star mechanisms in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar structure, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:
+
+Interstellar medium
+The cyanide radical •CN has been identified in interstellar space. Cyanogen, , is used to measure the temperature of interstellar gas clouds.",0.75,local,determine the correct option: what is the interstellar medium (ism)? from the following choices.,816193401
+745,Select the most accurate option: What is linear frame dragging? from the following choices.,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.1111111111111111,live_api,select the most accurate option: what is linear frame dragging? from the following choices.,1671701818
+746,Choose the correct answer: What is radiosity in radiometry? based on the given context.,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,No match found.,0.0,live_api,choose the correct answer: what is radiosity in radiometry? based on the given context.,3892687527
+747,"Which of the following is correct? What is the meaning of the term ""horror vacui""? carefully.",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate structure.,The spatial-corporeal component of Descartes' metaphysics.,B,"For Walter Benjamin in his study of the Origin, the almost pathological-seeming (or at any rate historically aberrant and intense) elaboration of detail and tendency toward recursive involutions or even the horror vacui quality of cultural production characteristic of the era arises as a psychic defense or digressive suppression of terror and anomie in the absence of the symbolically transcendent authority so long manifest in the institutions and ritual forms of absolution projected across the continent by the Western Church in Rome in the collapse of its continental supremacy in administration and social control—a process which has sometimes been called the ‘dismemberment of Christendom,’ or more positively the birth of modernity and thus also of the hegemony of capitalism, as Max Weber and various other (including Hugh Trevor Roper’s Crisis of the Seventeenth Century and his more famous monograph on the European Witch Craze).
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+The dual meanings of doxa, with ""glory"" or ""glorification"" (of God by the church and of the church by God), especially in worship, yield the pair ""correct belief"" and ""true worship"". Together, these express the core of a fundamental teaching about the inseparability of belief and worship and their role in drawing the church together with Christ. All Slavic Orthodox churches use the title Pravoslavie (), meaning ""correctness of glorification"", to denote what is in English Orthodoxy, while the Georgians use the title Martlmadidebeli ().",0.625,local,"which of the following is correct? what is the meaning of the term ""horror vacui""? carefully.",1669312453
+748,Select the most accurate option: What is the origin of the permanent moment in paramagnetism?,The permanent moment is generally due to the spin of unpaired electrons in atomic or molecular electron orbitals.,The permanent moment is due to the alignment of dipoles perpendicular to the applied field.,"The permanent moment is due to the torque provided on the magnetic moments by an applied field, which tries to align the dipoles perpendicular to the applied field.",The permanent moment is due to the quantum-mechanical properties of spin and angular momentum.,The permanent moment is due to the interaction of dipoles with one another and are randomly oriented in the absence of an external field due to thermal agitation.,A,"The permanent dipole moment  of an atom in a non-degenerate state (see Degenerate energy level) is given as the expectation (average) value of the dipole operator,
+
+Apart from the passage of Christopher Columbus, the Canary Islands were the site of some of the most important fleets in Western history. Such as the fleet of the Virginia Company in 1606, which marked the foundation of Fort Jamestown -the first permanent English settlement in what is now the United States- and the passage of the First Fleet through Tenerife, which marked the first European settlement in Australia in Botany Bay. Australia-Tenerife. First Fleet, Canarias Colección
+
+where
+  is the moment of inertia for a point mass,
+  is the orbital angular velocity of the particle about the origin,
+  is the position vector of the particle relative to the origin, and ,
+  is the linear velocity of the particle relative to the origin, and
+  is the mass of the particle.",0.5,local,select the most accurate option: what is the origin of the permanent moment in paramagnetism?,984640485
+749,Pick the best possible answer: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level? based on the given context.,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,pick the best possible answer: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level? based on the given context.,3502465882
+750,Select the most accurate option: What is the significance of the redshift-distance relationship in determining the expansion history of the universe? from the following choices.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.42857142857142855,local,select the most accurate option: what is the significance of the redshift-distance relationship in determining the expansion history of the universe? from the following choices.,3666500228
+751,Select the most accurate option: What is the gravitomagnetic interaction? from the following choices.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general framework of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"The system came with two Intellivision-style controllers with a 12-button keypad and ""fire"" buttons on the sides. The direction pads have a removable joystick attachment. Most games came with BoPET overlays that can be applied to the controller's keypads. The console itself has five buttons: Power, Start, Reset, Option, and Select.
+
+Approval voting allows voters to select all the candidates whom they consider to be reasonable choices.
+
+In many superconductors, the attractive interaction between electrons (necessary for pairing) is brought about indirectly by the Bardeen–Pines interaction between the electrons and the vibrating crystal lattice (the phonons). Roughly speaking the picture is the following:",0.75,local,select the most accurate option: what is the gravitomagnetic interaction? from the following choices.,2282755576
+752,Determine the correct option: What was Pierre de Fermat's solution to the problem of refraction? carefully.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Pierre de Fermat also pioneered the development of analytic geometry. Although not published in his lifetime, a manuscript form of Ad locos planos et solidos isagoge (Introduction to Plane and Solid Loci) was circulating in Paris in 1637, just prior to the publication of Descartes' Discourse.Pierre de Fermat, Varia Opera Mathematica d. Petri de Fermat, Senatoris Tolosani (Toulouse, France:  Jean Pech, 1679), ""Ad locos planos et solidos isagoge,"" pp. 91–103. ""Eloge de Monsieur de Fermat""  (Eulogy of Mr. de Fermat), Le Journal des Scavans, 9 February 1665, pp. 69–72.  From p. 70:  ""Une introduction aux lieux, plans & solides; qui est un traité analytique concernant la solution des problemes plans & solides, qui avoit esté veu devant que M. des Cartes eut rien publié sur ce sujet.""  (An introduction to loci, plane and solid; which is an analytical treatise concerning the solution of plane and solid problems, which was seen before Mr. des Cartes had published anything on this subject.) Clearly written and well received, the Introduction also laid the groundwork for analytical geometry. The key difference between Fermat's and Descartes' treatments is a matter of viewpoint: Fermat always started with an algebraic equation and then described the geometric curve that satisfied it, whereas Descartes started with geometric curves and produced their equations as one of several properties of the curves. As a consequence of this approach, Descartes had to deal with more complicated equations and he had to develop the methods to work with polynomial equations of higher degree. It was Leonhard Euler who first applied the coordinate method in a systematic study of space curves and surfaces.",0.5833333333333334,local,determine the correct option: what was pierre de fermat's solution to the problem of refraction? carefully.,3139043045
+753,Select the most accurate option: What is the gravitomagnetic interaction? carefully.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general concept of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"The system came with two Intellivision-style controllers with a 12-button keypad and ""fire"" buttons on the sides. The direction pads have a removable joystick attachment. Most games came with BoPET overlays that can be applied to the controller's keypads. The console itself has five buttons: Power, Start, Reset, Option, and Select.
+
+Legal scholar Jim Drennan, an expert on the court system at the Institute of Government at the University of North Carolina at Chapel Hill, told the Winston-Salem Journal in a 2007 interview that the ability to use this form of guilty plea as an option in courts had a far-reaching effect throughout the United States: ""We have lots of laws, but human interaction creates unique circumstances and the law has to adapt."" He added that the Supreme Court ""had to make a decision about what to do. One of the things the court has to do is figure out how to answer new questions, and that is what happened in this case.""
+
+If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).",0.5714285714285714,local,select the most accurate option: what is the gravitomagnetic interaction? carefully.,3557900058
+754,Select the most accurate option: What is the relationship between the Wigner function and the density matrix operator? based on the given context.,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.",0.6428571428571429,local,select the most accurate option: what is the relationship between the wigner function and the density matrix operator? based on the given context.,3932867515
+755,Pick the best possible answer: What is the Liouville density? among the listed options.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,No match found.,0.0,live_api,pick the best possible answer: what is the liouville density? among the listed options.,1707895661
+756,Identify the correct statement: Who was Giordano Bruno? based on the given context.,A German philosopher who supported the Keplerian framework that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic principle that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian framework that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican concept that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean framework that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""
+
+In the sixteenth century, the Italian philosopher Giordano Bruno, an early supporter of the Copernican theory that Earth and other planets orbit the Sun (heliocentrism), put forward the view that fixed stars are similar to the Sun and are likewise accompanied by planets.
+
+The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8",0.3333333333333333,local,identify the correct statement: who was giordano bruno? based on the given context.,3894737340
+757,Choose the correct answer: What is the Kutta condition?,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem.  Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution.  Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+During the time of the first flights, Frederick W. Lanchester, Martin Kutta, and Nikolai Zhukovsky independently created theories that connected circulation of a fluid flow to lift. Kutta and Zhukovsky went on to develop a two-dimensional wing theory. Expanding upon the work of Lanchester, Ludwig Prandtl is credited with developing the mathematics behind thin-airfoil and lifting-line theories as well as work with boundary layers.",0.8,local,choose the correct answer: what is the kutta condition?,3404333233
+758,What is the metallicity of Kapteyn's star estimated to be?,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.
+
+Planets in the habitable zones of stars with low metallicity are more habitable for complex life on land than high metallicity stars because the stellar spectrum of high metallicity stars is less likely to cause the formation of ozone thus enabling more ultraviolet rays to reach the planet's surface.",0.6666666666666666,local,what is the metallicity of kapteyn's star estimated to be?,3815527546
+759,Which of the following is correct? What is the spin quantum number?,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+There is another quantity of angular momentum, called the orbital angular momentum (azimuthal quantum number ), that comes in increments of , which represent the angular moment due to quarks orbiting around each other. The total angular momentum (total angular momentum quantum number J) of a particle is therefore the combination of intrinsic angular momentum (spin) and orbital angular momentum. It can take any value from  to , in increments of 1.
++ Baryon angular momentum quantum numbers for  Spin, S Orbital angular momentum, L Total angular momentum, J Parity, P Condensed notation, JP  0    +  + 1  ,   −  −, − 2  ,   +  +, + 3  ,   −  −, −  0    +  + 1  , ,   −  −, −, − 2  , , ,   +  +, +, +, + 3  , , ,   −  −, −, −, −",0.8333333333333334,local,which of the following is correct? what is the spin quantum number?,1916738225
+760,Which of the following is correct? What is the definition of an improper rotation? based on the given context.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"One standard definition is that an angle is a figure consisting of two rays which lie in a plane and share a common endpoint. Alternatively, given such a figure, an angle might be defined as: the opening between the rays; the area of the plane that lies between the rays; or the amount of rotation about the vertex of one ray to the other.
+
+There is also an alternative, stronger definition of ESS, due to Thomas.  This places a different emphasis on the role of the Nash equilibrium concept in the ESS concept.  Following the terminology given in the first definition above, this definition requires that for all T≠S
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.",0.6666666666666666,local,which of the following is correct? what is the definition of an improper rotation? based on the given context.,4160505454
+761,What is radiometric dating?,"Radiometric dating is a method of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a method of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a method of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a method of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a method of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"In refutation of young Earth claims of inconstant decay rates affecting the reliability of radiometric dating, Roger C. Wiens, a physicist specializing in isotope dating states:
+
+Radiometric dating
+Creationists point to flawed experiments they have performed, which they claim demonstrate that 1.5 billion years of nuclear decay took place over a short period of time, from which they infer that ""billion-fold speed-ups of nuclear decay"" have occurred, a massive violation of the principle that radioisotope decay rates are constant, a core principle underlying nuclear physics generally, and radiometric dating in particular.
+
+Prehistory
+The territory now known as Chad possesses some of the richest archaeological sites in Africa. A hominid skull was found by Michel Brunet, that is more than 7 million years old, the oldest discovered anywhere in the world; it has been given the name Sahelanthropus tchadensis. In 1996 Brunet unearthed a hominid jaw, which he named Australopithecus bahrelghazali, unofficially dubbed Abel. It was dated using beryllium-based radiometric dating as living  3.6 million years ago.",1.0,local,what is radiometric dating?,3499562001
+762,Which of the following is correct? What is the isophotal diameter used for in measuring a galaxy's size?,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Other notable spiral galaxies in Canes Venatici are the Sunflower Galaxy (M63, NGC 5055), M94 (NGC 4736), and M106 (NGC 4258).
+ M63, the Sunflower Galaxy, was named for its appearance in large amateur telescopes. It is a spiral galaxy with an integrated magnitude of 9.0.
+ M94 (NGC 4736) is a small face-on spiral galaxy with approximate magnitude 8.0, about 15 million light-years from Earth.
+ NGC 4631 is a barred spiral galaxy, which is one of the largest and brightest edge-on galaxies in the sky.
+ M3 (NGC 5272) is a globular cluster 32,000 light-years from Earth. It is 18′ in diameter, and at magnitude 6.3 is bright enough to be seen with binoculars. It can even be seen with the naked eye under particularly dark skies.
+ M94, also cataloged as NGC 4736, is a face-on spiral galaxy 15 million light-years from Earth. It has very tight spiral arms and a bright core. The outskirts of the galaxy are incredibly luminous in the ultraviolet because of a ring of new stars surrounding the core 7,000 light-years in diameter. Though astronomers are not sure what has caused this ring of new stars, some hypothesize that it is from shock waves caused by a bar that is thus far invisible.
+
+Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.
+
+In the 2nd century CE, Ptolemy estimated the mean distance of the Sun as  times Earth's radius. To determine this value, Ptolemy started by measuring the Moon's parallax, finding what amounted to a horizontal lunar parallax of 1° 26′, which was much too large. He then derived a maximum lunar distance of  Earth radii. Because of cancelling errors in his parallax figure, his theory of the Moon's orbit, and other factors, this figure was approximately correct.van Helden 1985, pp. 16–19.Ptolemy's Almagest, translated and annotated by G. J. Toomer, London: Duckworth, 1984, p. 251. . He then measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon at the Moon's greatest distance, and from records of lunar eclipses, he estimated this apparent diameter, as well as the apparent diameter of the shadow cone of Earth traversed by the Moon during a lunar eclipse. Given these data, the distance of the Sun from Earth can be trigonometrically computed to be  Earth radii. This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure. Although Ptolemy's procedure is theoretically workable, it is very sensitive to small changes in the data, so much so that changing a measurement by a few per cent can make the solar distance infinite.",0.7,local,which of the following is correct? what is the isophotal diameter used for in measuring a galaxy's size?,3278058808
+763,Choose the correct answer: What is the relationship between chemical potential and quarks/antiquarks? based on the given context.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a structure. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a framework. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a mechanism. Higher μ indicates a higher density of quarks.",A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+where the n is the number of up and down quarks and antiquarks.
+
+where
+  is the number of constituent quarks, and
+  is the number of constituent antiquarks.",0.6666666666666666,local,choose the correct answer: what is the relationship between chemical potential and quarks/antiquarks? based on the given context.,3199630683
+764,What is the propagation constant in sinusoidal waves?,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"In the absence of obstacles, the Huygens's principle alone predicts wavefront propagation. When some of the secondary waves are blocked by an obstacle, the remainder will create both wavefront propagation in the unblocked direction and waves behind the obstacle which form the diffraction pattern.
+
+The central stage in the acoustical process is wave propagation. This falls within the domain of physical acoustics. In fluids, sound propagates primarily as a pressure wave. In solids, mechanical waves can take many forms including longitudinal waves, transverse waves and surface waves.
+
+If the permittivity and permeability of the medium is constant for different frequency EM waves, this is called a non-dispersive medium. In this case all EM wave frequencies would travel at the same velocity, and the waveshape stays constant as it travels. However in real matter  and  typically vary with frequency, this is called a dispersive medium. In dispersive media different spectral bands have different propagation characteristics, and an arbitrary wave changes shape as it travels through the medium.",0.75,local,what is the propagation constant in sinusoidal waves?,4132082828
+765,Select the most accurate option: What is a uniform tiling in the hyperbolic plane? carefully.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,No match found.,0.0,live_api,select the most accurate option: what is a uniform tiling in the hyperbolic plane? carefully.,1753384621
+766,Pick the best possible answer: What is the spin quantum number? based on the given context.,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+Alice now measures the spin along the z-axis. She can obtain one of two possible outcomes: +z or −z. Suppose she gets +z. Informally speaking, the quantum state of the system collapses into state I. The quantum state determines the probable outcomes of any measurement performed on the system. In this case, if Bob subsequently measures spin along the z-axis, there is 100% probability that he will obtain −z. Similarly, if Alice gets −z, Bob will get +z. There is nothing special about choosing the z-axis: according to quantum mechanics the spin singlet state may equally well be expressed as a superposition of spin states pointing in the x direction.
+
+In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.",0.5,local,pick the best possible answer: what is the spin quantum number? based on the given context.,3540016646
+767,Which of the following is correct? What did Fresnel predict and verify with regards to total internal reflections? among the listed options.,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.07142857142857142,live_api,which of the following is correct? what did fresnel predict and verify with regards to total internal reflections? among the listed options.,2885274402
+768,Identify the correct statement: What is the interpretation of supersymmetry in stochastic supersymmetric framework? carefully.,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,"In astronomy and cosmology, dark matter is an invisible and hypothetical form of matter that does not interact with electromagnetic radiation, including light. Dark matter is implied by gravitational effects that cannot be explained by general relativity unless more matter is present than can be observed. Such effects occur in the context of formation and evolution of galaxies, gravitational lensing, the observable universe's current structure, mass position in galactic collisions, the motion of galaxies within galaxy clusters, and cosmic microwave background anisotropies. Dark matter is thought to serve as gravitational scaffolding for cosmic structures. After the Big Bang, dark matter clumped into blobs along narrow filaments with superclusters of galaxies forming a cosmic web at scales on which entire galaxies appear like tiny particles.
+In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form o",0.0,live_api,identify the correct statement: what is the interpretation of supersymmetry in stochastic supersymmetric framework? carefully.,2173297563
+769,"Determine the correct option: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.","MOND is a framework that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a concept that enhances the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a concept that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a principle that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a concept that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"determine the correct option: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.",4106823900
+770,"Which of the following is correct? What is the meaning of the term ""horror vacui""?",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate framework.,The spatial-corporeal component of Descartes' metaphysics.,B,"For Walter Benjamin in his study of the Origin, the almost pathological-seeming (or at any rate historically aberrant and intense) elaboration of detail and tendency toward recursive involutions or even the horror vacui quality of cultural production characteristic of the era arises as a psychic defense or digressive suppression of terror and anomie in the absence of the symbolically transcendent authority so long manifest in the institutions and ritual forms of absolution projected across the continent by the Western Church in Rome in the collapse of its continental supremacy in administration and social control—a process which has sometimes been called the ‘dismemberment of Christendom,’ or more positively the birth of modernity and thus also of the hegemony of capitalism, as Max Weber and various other (including Hugh Trevor Roper’s Crisis of the Seventeenth Century and his more famous monograph on the European Witch Craze).
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+The dual meanings of doxa, with ""glory"" or ""glorification"" (of God by the church and of the church by God), especially in worship, yield the pair ""correct belief"" and ""true worship"". Together, these express the core of a fundamental teaching about the inseparability of belief and worship and their role in drawing the church together with Christ. All Slavic Orthodox churches use the title Pravoslavie (), meaning ""correctness of glorification"", to denote what is in English Orthodoxy, while the Georgians use the title Martlmadidebeli ().",0.7142857142857143,local,"which of the following is correct? what is the meaning of the term ""horror vacui""?",1015696428
+771,Select the most accurate option: What is radiometric dating? based on the given context.,"Radiometric dating is a approach of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Protoscience, early sciences, and natural philosophies such as alchemy and astrology that existed during the Bronze Age, Iron Age, classical antiquity and the Middle Ages, declined after the emergence of modern sciences during the Scientific Revolution.
+The earliest roots of scientific thinking and practice can be traced to Ancient Egypt and Mesopotamia during the 3rd and 2nd millennia BCE. These civilizations' contributions to mathematics, astronomy, and medicine influenced later Greek natural philosophy of classical antiquity, wherein formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Latin-speaking Western Europe during the early centuries (400 to 1000 CE)",0.1111111111111111,live_api,select the most accurate option: what is radiometric dating? based on the given context.,3418021779
+772,Which of the following is correct? What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? from the following choices.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.6923076923076923,local,which of the following is correct? what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? from the following choices.,1267564132
+773,What are the two main interpretations for the disparity between the presence of matter and antimatter in the observable universe?,"The universe began with a small preference for matter, or it was originally perfectly asymmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with a small preference for antimatter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with equal amounts of matter and antimatter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with a small preference for matter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of matter over time.","The universe began with equal amounts of matter and antimatter, or it was originally perfectly asymmetric, but a set of phenomena contributed to a small imbalance in favor of matter over time.",D,"There is strong evidence that the observable universe is composed almost entirely of ordinary matter, as opposed to an equal mixture of matter and antimatter. This asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics. The process by which this inequality between matter and antimatter particles is hypothesised to have occurred is called baryogenesis.
+
+Most things observable from the Earth seem to be made of matter rather than antimatter. If antimatter-dominated regions of space existed, the gamma rays produced in annihilation reactions along the boundary between matter and antimatter regions would be detectable.
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.",0.5,local,what are the two main interpretations for the disparity between the presence of matter and antimatter in the observable universe?,2620133061
+774,"Pick the best possible answer: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids?",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"pick the best possible answer: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids?",3550219774
+775,Select the most accurate option: What is the Erlangen program? carefully.,"The Erlangen program is a procedure of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on group principle and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is an audio coding format developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg. It was designed to greatly reduce the amount of data required to represent audio, yet still sound like a faithful reproduction of the original uncompressed audio to most listeners; for example, compared to CD-quality digital audio, MP3 compression can commonly achieve a 75–95% reduction in size, depending on the bit rate. In popular usage, MP3 often refers to files of sound or music recordings stored in the MP3 file format (.mp3) on consumer electronic devices.
+MPEG-1 Audio Layer III was originally defined in 1991 as one of the three possible audio codecs of the MPEG-1 standard (along with MPEG-1 Audio Layer I and  MPEG-1 Audio Layer II). All three options were retained and further extended—defining additional bit rates and support for more audio channels (supporting surround sound—in the subsequent MPE",0.14285714285714285,live_api,select the most accurate option: what is the erlangen program? carefully.,394965574
+776,Pick the best possible answer: What is water hammer? carefully.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing mechanisms.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to boost the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"MythBusters is a science entertainment TV program created and produced by Australia's Beyond Television Productions for the Discovery Channel.
+There is no consistent system for organizing MythBusters episodes into seasons. The show did not follow a consistent calendar of on- and off-air periods for its first-aired episodes. The official MythBusters website at one point sorted episodes by calendar year, but as of 2024, sorts them into 19 seasons (with the first being the three pilots). When the series was released on DVD, some seasons followed calendar years while others did not. This list follows the calendar year as formerly posted on the Discovery website, and the only objective basis for breaking up ""seasons"".
+Including Specials and the revival series, a total of 296 episodes of MythBusters have aired so far.",0.0,live_api,pick the best possible answer: what is water hammer? carefully.,47630773
+777,"Choose the correct answer: What is the meaning of the term ""horror vacui""? from the following choices.",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate structure.,The spatial-corporeal component of Descartes' metaphysics.,B,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+This branch of mathematics deals with the long-term qualitative behavior of dynamical systems. Here, the focus is not on finding precise solutions to the equations defining the dynamical system (which is often hopeless), but rather to answer questions like ""Will the system settle down to a steady state in the long term, and if so, what are the possible attractors?"" or ""Does the long-term behavior of the system depend on its initial condition?""
+
+Such questions can be answered jes (yes) or ne (no) in the European fashion of aligning with the polarity of the answer, or ĝuste (correct) or malĝuste (incorrect) in the Japanese fashion of aligning with the polarity of the question:",0.3333333333333333,local,"choose the correct answer: what is the meaning of the term ""horror vacui""? from the following choices.",3559477869
+778,What is the Ramsauer-Townsend effect?,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a non-noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a noble gas. It requires the wave theory of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a non-noble gas. It requires the wave theory of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of electrons by atoms of any gas. It can be explained by classical mechanics.,B,"Willy Brandt (German: [ˈvɪliː ˈbʁant] ; born Herbert Ernst Karl Frahm; 18 December 1913 – 8 October 1992) was a German politician and statesman who was leader of the Social Democratic Party of Germany (SPD) from 1964 to 1987 and concurrently served as the chancellor of West Germany from 1969 to 1974. He was awarded the Nobel Peace Prize in 1971 for his efforts to strengthen cooperation in Western Europe through the EEC and to achieve reconciliation between West Germany and the countries of Eastern Europe. He was the first Social Democratic chancellor since 1930. 
+Fleeing to Norway and then Sweden during the Nazi regime and working as a left-wing journalist, he took the name Willy Brandt as a pseudonym to avoid detection by Nazi agents, and then formally adopted the name in 1948. Brandt earned initial fame as governing mayor of West Berlin. He served as the foreign minister and as the vice chancellor in Kurt Georg Kiesinger's cabinet, and became chancellor in 1969.
+As chancellor, he mai",0.0,live_api,what is the ramsauer-townsend effect?,1348965227
+779,Choose the correct answer: What is Lorentz symmetry or Lorentz invariance in relativistic physics? from the following choices.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.18181818181818182,live_api,choose the correct answer: what is lorentz symmetry or lorentz invariance in relativistic physics? from the following choices.,4162344163
+780,What is spontaneous symmetry breaking?,"Spontaneous symmetry breaking occurs when the action of a theory has no symmetry, but the vacuum state has a symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a theory has a symmetry, and the vacuum state also has the same symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a theory has no symmetry, and the vacuum state also has no symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a theory has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a theory has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.",E,"The above spontaneous symmetry breaking makes the  and  bosons coalesce into two different physical bosons with different masses – the  boson, and the photon (),
+
+In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+Before electroweak symmetry breaking 
+The Lagrangian for the electroweak interactions is divided into four parts before electroweak symmetry breaking manifests,",1.0,local,what is spontaneous symmetry breaking?,3438781750
+781,Which of the following is correct? What is Lorentz symmetry or Lorentz invariance in relativistic physics? among the listed options.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"Relativistic explanation
+The reasoning in the relativistic case is the same except that the relativistic velocity addition formulas must be used, which can be derived from Lorentz transformations between different frames of reference. These formulas are
+
+A partial listing of physical conservation equations due to symmetry that are said to be exact laws, or more precisely have never been proven to be violated:
+ Conservation law Respective Noether symmetry invariance Number of independent parameters(i.e. dimension of phase space) Conservation of energy  Time-translation invariance  Poincaré invariance 1  translation of time along -axis Conservation of linear momentum  Space-translation invariance 3  translation of space along x,y,z axes Conservation of angular momentum  Rotation invariance 3  rotation of space about x,y,z axes Conservation of boost 3-vector  Lorentz-boost invariance 3 Lorentz-boost of space-time along x,y,z axes Conservation of electric charge U(1)Q Gauge invariance 1  translation of electrodynamic scalar potential field along -axis (in phase space) Conservation of color charge SU(3)C Gauge invariance 3  translation of chromodynamic potential field along r,g,b-axes (in phase space) Conservation of weak isospin SU(2)L Gauge invariance 1  translation of weak potential field along axis in phase spaceConservation of the difference between baryon and lepton numbers B − LU(1)B−L Gauge invariance1
+
+The Cauchy distribution, named after Augustin-Louis Cauchy, is a continuous probability distribution.  It is also known, especially among physicists, as the Lorentz distribution (after Hendrik Lorentz), Cauchy–Lorentz distribution, Lorentz(ian) function, or Breit–Wigner distribution.  The Cauchy distribution  is the distribution of the -intercept of a ray issuing from  with a uniformly distributed angle.  It is also the distribution of the ratio of two independent normally distributed random variables with mean zero.",0.5833333333333334,local,which of the following is correct? what is lorentz symmetry or lorentz invariance in relativistic physics? among the listed options.,802463324
+782,"Identify the correct statement: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? among the listed options.","MOND is a concept that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a principle that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a framework that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"identify the correct statement: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? among the listed options.",3368935688
+783,Identify the correct statement: Which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? from the following choices.,"Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar structures, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Metacognition is an awareness of one's thought processes and an understanding of the patterns behind them. It is ""thinking about thinking"". The term comes from the root word meta, meaning ""beyond"", or ""on top of"". Metacognition can take many forms, such as reflecting on one's ways of thinking, and knowing when and how oneself and others use particular strategies for problem-solving. There are generally two components of metacognition: (1) cognitive conceptions and (2) a cognitive regulation system. Research has shown that both components of metacognition play key roles in metaconceptual knowledge and learning. Metamemory, defined as knowing about memory and mnemonic strategies, is an important aspect of metacognition.
+Writings on metacognition date back at least as far as two works by the Greek philosopher Aristotle (384–322 BC): On the Soul and the Parva Naturalia.",0.0,live_api,identify the correct statement: which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? from the following choices.,1358767389
+784,Pick the best possible answer: What is the Peierls bracket in canonical quantization? among the listed options.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization approach.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization approach that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization technique.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization procedure.,C,No match found.,0.0,live_api,pick the best possible answer: what is the peierls bracket in canonical quantization? among the listed options.,386284970
+785,Pick the best possible answer: Which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? from the following choices.,"Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"In philosophy, Occam's razor (also spelled Ockham's razor or Ocham's razor; Latin: novacula Occami) is the problem-solving principle that recommends searching for explanations constructed with the smallest possible set of elements. It is also known as the principle of parsimony or the law of parsimony (Latin: lex parsimoniae). Attributed to William of Ockham, a 14th-century English philosopher and theologian, it is frequently cited as Entia non sunt multiplicanda praeter necessitatem, which translates as ""Entities must not be multiplied beyond necessity"", although Occam never used those exact words. Popularly, the principle is sometimes paraphrased as ""of two competing theories, the simpler explanation of an entity is to be preferred"".
+The philosophical razor advocates that when presented with competing hypotheses about the same prediction and both hypotheses have equal explanatory power, one should prefer the hypothesis that requires the fewest assumptions, and that this is not meant",0.14285714285714285,live_api,pick the best possible answer: which of the following is an accurate definition of dynamic scaling in self-similar mechanisms? from the following choices.,1093989276
+786,Choose the correct answer: What is the identity operation in symmetry groups? based on the given context.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+No context switch needed
+Considering a general arithmetic addition operation A = B+1. The instruction is stored in the instruction register and the program counter is incremented. A and B are read from memory and are stored in registers R1, R2 respectively. In this case, B+1 is calculated and written in R1 as the final answer. This operation as there are sequential reads and writes and there's no waits for function calls used, hence no context switch/wait takes place in this case.",0.9,local,choose the correct answer: what is the identity operation in symmetry groups? based on the given context.,1980839996
+787,Identify the correct statement: What is the isophotal diameter used for in measuring a galaxy's size? from the following choices.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Other notable spiral galaxies in Canes Venatici are the Sunflower Galaxy (M63, NGC 5055), M94 (NGC 4736), and M106 (NGC 4258).
+ M63, the Sunflower Galaxy, was named for its appearance in large amateur telescopes. It is a spiral galaxy with an integrated magnitude of 9.0.
+ M94 (NGC 4736) is a small face-on spiral galaxy with approximate magnitude 8.0, about 15 million light-years from Earth.
+ NGC 4631 is a barred spiral galaxy, which is one of the largest and brightest edge-on galaxies in the sky.
+ M3 (NGC 5272) is a globular cluster 32,000 light-years from Earth. It is 18′ in diameter, and at magnitude 6.3 is bright enough to be seen with binoculars. It can even be seen with the naked eye under particularly dark skies.
+ M94, also cataloged as NGC 4736, is a face-on spiral galaxy 15 million light-years from Earth. It has very tight spiral arms and a bright core. The outskirts of the galaxy are incredibly luminous in the ultraviolet because of a ring of new stars surrounding the core 7,000 light-years in diameter. Though astronomers are not sure what has caused this ring of new stars, some hypothesize that it is from shock waves caused by a bar that is thus far invisible.
+
+Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.
+
+In the 2nd century CE, Ptolemy estimated the mean distance of the Sun as  times Earth's radius. To determine this value, Ptolemy started by measuring the Moon's parallax, finding what amounted to a horizontal lunar parallax of 1° 26′, which was much too large. He then derived a maximum lunar distance of  Earth radii. Because of cancelling errors in his parallax figure, his theory of the Moon's orbit, and other factors, this figure was approximately correct.van Helden 1985, pp. 16–19.Ptolemy's Almagest, translated and annotated by G. J. Toomer, London: Duckworth, 1984, p. 251. . He then measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon at the Moon's greatest distance, and from records of lunar eclipses, he estimated this apparent diameter, as well as the apparent diameter of the shadow cone of Earth traversed by the Moon during a lunar eclipse. Given these data, the distance of the Sun from Earth can be trigonometrically computed to be  Earth radii. This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure. Although Ptolemy's procedure is theoretically workable, it is very sensitive to small changes in the data, so much so that changing a measurement by a few per cent can make the solar distance infinite.",0.5,local,identify the correct statement: what is the isophotal diameter used for in measuring a galaxy's size? from the following choices.,2704979600
+788,What is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another?,Intrinsic semiconductors,Electrical impedance tomography,Quantum conduction,Carrier mobility,Variable range hopping,E,"Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is the ohm-metre (Ω⋅m). For example, if a 1 m3 solid cube of material has sheet contacts on two opposite faces, and the resistance between these contacts is 1 Ω, then the resistivity of the material is 1 Ω⋅m.
+Electrical conductivity (or specific conductance) is the reciprocal of electrical resistivity. It represents a material's ability to conduct electric current. It is commonly signified by the Greek letter σ (sigma), but κ (kappa) (especially in electrical engineering) and γ (gamma) are sometimes used. The SI unit of electrical conductivity is siemens per metre (S/m). Resistivity and co",0.125,live_api,what is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another?,2740776591
+789,Choose the correct answer: Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions?,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+In 1956, Tsung-Dao Lee and Chen Ning Yang noticed that there was no evidence that parity was conserved in weak interactions, and so they postulated that this symmetry may not be preserved by the weak force. They sketched the design for an experiment for testing conservation of parity in the laboratory. Later that year, Chien-Shiung Wu and coworkers showed experimentally that an asymmetrical beta emission from  proved that parity is not conserved in beta decay. This surprising result overturned long-held assumptions about parity and the weak force. In recognition of their theoretical work, Lee and Yang were awarded the Nobel Prize for Physics in 1957. However Wu, who was female, was not awarded the Nobel prize.
+
+Wigner was awarded the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"". The prize was shared that year, with the other half of the award divided between Maria Goeppert-Mayer and J. Hans D. Jensen. Wigner professed that he had never considered the possibility that this might occur, and added: ""I never expected to get my name in the newspapers without doing something wicked."" He also won the Franklin Medal in 1950, the Enrico Fermi award in 1958, the Atoms for Peace Award in 1959, the Max Planck Medal in 1961, the National Medal of Science in 1969, the Albert Einstein Award in 1972, the Golden Plate Award of the American Academy of Achievement in 1974, the eponymous Wigner Medal in 1978, and the Herzl Prize in 1982. In 1968 he gave the Josiah Willard Gibbs lecture.",0.5,local,choose the correct answer: who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions?,673577969
+790,Which of the following is correct? How many crystallographic point groups are there in three-dimensional space? based on the given context.,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.
+
+In analytic geometry, the plane is given a coordinate system, by which every point has a pair of real number coordinates. Similarly, Euclidean space is given coordinates where every point has three coordinates. The value of the coordinates depends on the choice of the initial point of origin. There are a variety of coordinate systems used, but the most common are the following:Stewart, James (2008). Calculus: Early Transcendentals, 6th ed., Brooks Cole Cengage Learning.
+
+A Cartesian coordinate system for a three-dimensional space consists of an ordered triplet of lines (the axes) that go through a common point (the origin), and are pair-wise perpendicular; an orientation for each axis; and a single unit of length for all three axes. As in the two-dimensional case, each axis becomes a number line. For any point P of space, one considers a plane through P perpendicular to each coordinate axis, and interprets the point where that plane cuts the axis as a number. The Cartesian coordinates of P are those three numbers, in the chosen order. The reverse construction determines the point P given its three coordinates.",0.5714285714285714,local,which of the following is correct? how many crystallographic point groups are there in three-dimensional space? based on the given context.,362244607
+791,"Which of the following is correct? What is the concept of simultaneity in Einstein's book, Relativity? carefully.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.",0.7,local,"which of the following is correct? what is the concept of simultaneity in einstein's book, relativity? carefully.",363793072
+792,What is the difference between illuminance and luminance?,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,"The U and V signals are color difference signals. The U signal is the difference between the B signal and the Y signal, also known as B minus Y (B-Y), and the V signal is the difference between the R signal and the Y signal, also known as R minus Y (R-Y). The U signal then represents how purplish-blue or its complementary color, yellowish-green, the color is, and the V signal how purplish-red or its complementary, greenish-cyan, it is. The advantage of this scheme is that the U and V signals are zero when the picture has no color content.  Since the human eye is more sensitive to detail in luminance than in color, the U and V signals can be transmitted with reduced bandwidth with acceptable results.
+
+Embassies and consulates around the world
+ Embassies and Consulates Search Directory
+ What is the difference between an Embassy and a Consulate?
+
+Relationships between luminous intensity, luminous flux, and illuminance 
+If a source emits a known luminous intensity  (in candelas) in a well-defined cone, the total luminous flux  in lumens is given by",1.0,local,what is the difference between illuminance and luminance?,1278778370
+793,Choose the correct answer: What is the main factor that determines the occurrence of each type of supernova? carefully.,The star's distance from Earth,The star's age,The star's temperature,The star's luminosity,The progenitor star's metallicity,E,"Ontology of concepts 
+A central question in the study of concepts is the question of what they are. Philosophers construe this question as one about the ontology of concepts—what kind of things they are. The ontology of concepts determines the answer to other questions, such as how to integrate concepts into a wider theory of the mind, what functions are allowed or disallowed by a concept's ontology, etc. There are two main views of the ontology of concepts: (1) Concepts are abstract objects, and (2) concepts are mental representations.",0.25,local,choose the correct answer: what is the main factor that determines the occurrence of each type of supernova? carefully.,4203397728
+794,Pick the best possible answer: What are the two main factors that cause resistance in a metal?,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"The third mode is parapatric speciation. This is similar to peripatric speciation in that a small population enters a new habitat, but differs in that there is no physical separation between these two populations. Instead, speciation results from the evolution of mechanisms that reduce gene flow between the two populations. Generally this occurs when there has been a drastic change in the environment within the parental species' habitat. One example is the grass Anthoxanthum odoratum, which can undergo parapatric speciation in response to localised metal pollution from mines. Here, plants evolve that have resistance to high levels of metals in the soil. Selection against interbreeding with the metal-sensitive parental population produced a gradual change in the flowering time of the metal-resistant plants, which eventually produced complete reproductive isolation. Selection against hybrids between the two populations may cause reinforcement, which is the evolution of traits that promote mating within a species, as well as character displacement, which is when two species become more distinct in appearance.
+
+Ontology of concepts 
+A central question in the study of concepts is the question of what they are. Philosophers construe this question as one about the ontology of concepts—what kind of things they are. The ontology of concepts determines the answer to other questions, such as how to integrate concepts into a wider theory of the mind, what functions are allowed or disallowed by a concept's ontology, etc. There are two main views of the ontology of concepts: (1) Concepts are abstract objects, and (2) concepts are mental representations.",0.6363636363636364,local,pick the best possible answer: what are the two main factors that cause resistance in a metal?,2557060438
+795,Which of the following is correct? What is the Ozma Problem? carefully.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Modeling language acquisition
+The fact that during language acquisition, children are largely only exposed to positive evidence,Bowerman, M. (1988). The ""no negative evidence"" problem: How do children avoid constructing an overly general grammar. Explaining language universals. meaning that the only evidence for what is a correct form is provided, and no evidence for what is not correct,Braine, M.D.S. (1971). On two types of models of the internalization of grammars. In D.I. Slobin (Ed.), The ontogenesis of grammar: A theoretical perspective. New York: Academic Press. was a limitation for the models at the time because the now available deep learning models were not available in late 1980s.Powers, D.M.W. & Turk, C.C.R. (1989). Machine Learning of Natural Language. Springer-Verlag. .
+
+It also is often quite difficult to assign the L, L, L, L, symbols to the physical variables involved in the problem of interest. He invokes a procedure that involves the ""symmetry"" of the physical problem. This is often very difficult to apply reliably: It is unclear as to what parts of the problem that the notion of ""symmetry"" is being invoked. Is it the symmetry of the physical body that forces are acting upon, or to the points, lines or areas at which forces are being applied? What if more than one body is involved with different symmetries?",0.5,local,which of the following is correct? what is the ozma problem? carefully.,2889818895
+796,Identify the correct statement: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? among the listed options.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,identify the correct statement: what is the 'reactive leidenfrost effect' observed in non-volatile materials? among the listed options.,2555805962
+797,Pick the best possible answer: What did Newton adopt after his correspondence with Hooke in 1679-1680?,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,pick the best possible answer: what did newton adopt after his correspondence with hooke in 1679-1680?,690667244
+798,Identify the correct statement: What is bollard pull primarily used for measuring? from the following choices.,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,"This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: ""sailor"", from naus: ""ship"".
+Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article. Terms used in other fields associated with bodies of water can be found at Glossary of fishery terms, Glossary of underwater diving terminology, Glossary of rowing terms, and Glossary of meteorology.",0.1,live_api,identify the correct statement: what is bollard pull primarily used for measuring? from the following choices.,952173699
+799,Determine the correct option: What is the main advantage of ferroelectric memristors? based on the given context.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.5,local,determine the correct option: what is the main advantage of ferroelectric memristors? based on the given context.,555276202
+800,Pick the best possible answer: What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI? carefully.,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,No match found.,0.0,live_api,pick the best possible answer: what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri? carefully.,3221199262
+801,Pick the best possible answer: What was the aim of the Gravity Probe B (GP-B) mission? carefully.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,No match found.,0.0,live_api,pick the best possible answer: what was the aim of the gravity probe b (gp-b) mission? carefully.,73893815
+802,Identify the correct statement: What is the mechanism of FTIR? from the following choices.,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"A  statement somewhat resembles a procedure call in a newer languages in the sense that execution returns to the code following the  statement at the end of the called code; however, it does not provide a mechanism for parameter passing or for returning a result value. If a subroutine is invoked using a simple statement like , then control returns at the end of the called procedure. However,  is unusual in that it may be used to call a range spanning a sequence of several adjacent procedures. This is done with the  construct:
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Historically a barrister might use the honorific, Esquire. Even though the term barrister-at-law is sometimes seen, and was once very common, it has never been formally correct in England and Wales. Barrister is the only correct nomenclature.This was confirmed by the Professional Conduct Committee of the Bar Council when it changed its rules on the usage of the description by individuals in 1970, Annual Statement of the Bar Council, 1969/70.",0.7142857142857143,local,identify the correct statement: what is the mechanism of ftir? from the following choices.,1682907764
+803,Choose the correct answer: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere? among the listed options.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,choose the correct answer: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere? among the listed options.,3139708123
+804,Identify the correct statement: What is the Einstein@Home project? from the following choices.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"21st century 
+Since 2000, the Einstein Papers Project has been located at Caltech. The project was established in 1986 to assemble, preserve, translate, and publish papers selected from the literary estate of Albert Einstein and from other collections.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Following the discovery of the recession of the galaxies by Edwin Hubble in 1929, Einstein abandoned his static model of the universe, and proposed two dynamic models of the cosmos, the Friedmann–Einstein universe of 1931Einstein (1931). and the Einstein–de Sitter universe of 1932.Einstein & de Sitter (1932). In each of these models, Einstein discarded the cosmological constant, claiming that it was ""in any case theoretically unsatisfactory"".",0.625,local,identify the correct statement: what is the einstein@home project? from the following choices.,4288185135
+805,Identify the correct statement: How many crystallographic point groups are there in three-dimensional space? among the listed options.,7,32,14,5,27,B,"A perovskite solar cell (PSC) is a type of solar cell that includes a perovskite-structured compound, most commonly a hybrid organic–inorganic lead or tin halide-based material as the light-harvesting active layer. Perovskite materials, such as methylammonium lead halides the all-inorganic cesium lead halide, are cheap to produce and simple to manufacture.
+Solar-cell efficiencies of laboratory-scale devices using these materials have increased from 3.8% in 2009 to 27% in 2025 in single-junction architectures, and, in silicon-based tandem cells, to 34.85%, exceeding the maximum efficiency achieved in single-junction silicon solar cells. Perovskite solar cells have therefore been the fastest-advancing solar technology as of 2016.  With the potential of achieving even higher efficiencies and very low production costs, perovskite solar cells have become commercially attractive. Core problems and research subjects include their long-term stability, high sensitivity to moisture, and toxicity",0.0,live_api,identify the correct statement: how many crystallographic point groups are there in three-dimensional space? among the listed options.,382837007
+806,"Determine the correct option: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.","MOND is a framework that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a concept that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a concept that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a concept that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a principle that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"determine the correct option: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.",4106823900
+807,Pick the best possible answer: What is a pycnometer?,A device used to measure the density of a gas.,A device used to measure the mass of a liquid.,A device used to measure the volume of a gas.,A device used to determine the density of a liquid.,A device used to determine the volume of a liquid.,D,No match found.,0.0,live_api,pick the best possible answer: what is a pycnometer?,2720063689
+808,Which of the following is correct? What is the Maxwell's Demon thought experiment? carefully.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an boost in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a lower in temperature in one part and an enhance in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a minimize in temperature in one part and an enhance in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an boost in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a minimize in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"Feynman was fond of saying that all of quantum mechanics can be gleaned from carefully thinking through the implications of this single experiment. He also proposed (as a thought experiment) that if detectors were placed before each slit, the interference pattern would disappear.Feynman, 1965, chapter 3
+
+""Which-way"" experiments and the principle of complementarity 
+A well-known thought experiment predicts that if particle detectors are positioned at the slits, showing through which slit a photon goes, the interference pattern will disappear. This which-way experiment illustrates the complementarity principle that photons can behave as either particles or waves, but cannot be observed as both at the same time.
+Despite the importance of this thought experiment in the history of quantum mechanics (for example, see the discussion on Einstein's version of this experiment), technically feasible realizations of this experiment were not proposed until the 1970s. (Naive implementations of the textbook thought experiment are not possible because photons cannot be detected without absorbing the photon.) Currently, multiple experiments have been performed illustrating various aspects of complementarity.
+
+Interpretations of the experiment 
+Like the Schrödinger's cat thought experiment, the double-slit experiment is often used to highlight the differences and similarities between the various interpretations of quantum mechanics.",0.5555555555555556,local,which of the following is correct? what is the maxwell's demon thought experiment? carefully.,4053774164
+809,Pick the best possible answer: What happens to an initially inhomogeneous physical structure that is isolated by a thermodynamic operation? carefully.,It will change its internal state only if it is composed of a single subframework and has internal walls.,It will change its internal state only if it is composed of several substructures separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single submechanism.,D,No match found.,0.0,live_api,pick the best possible answer: what happens to an initially inhomogeneous physical structure that is isolated by a thermodynamic operation? carefully.,2623389804
+810,"Choose the correct answer: What is the concept of simultaneity in Einstein's book, Relativity? among the listed options.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,"choose the correct answer: what is the concept of simultaneity in einstein's book, relativity? among the listed options.",789792300
+811,Choose the correct answer: What is the SI unit of the physical quantity m/Q? among the listed options.,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.4166666666666667,local,choose the correct answer: what is the si unit of the physical quantity m/q? among the listed options.,1765922316
+812,Identify the correct statement: What is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another? among the listed options.,Intrinsic semiconductors,Electrical impedance tomography,Quantum conduction,Carrier mobility,Variable range hopping,E,No match found.,0.0,live_api,identify the correct statement: what is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another? among the listed options.,2897799374
+813,Which of the following is correct? What is the SI base unit of time and how is it defined? based on the given context.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).",0.5454545454545454,local,which of the following is correct? what is the si base unit of time and how is it defined? based on the given context.,2777647938
+814,Identify the correct statement: What is explicit symmetry breaking in theoretical physics? carefully.,"Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that do not respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that do not respect the symmetry, usually in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, usually in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.",B,This is a list of atheists in science and technology. A statement by a living person that he or she does not believe in God is not a sufficient criterion for inclusion in this list. Persons in this list are people (living or not) who both have publicly identified themselves as atheists and whose atheism is relevant to their notable activities or public life.,0.1111111111111111,live_api,identify the correct statement: what is explicit symmetry breaking in theoretical physics? carefully.,3942505053
+815,Select the most accurate option: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? from the following choices.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,select the most accurate option: what is the 'reactive leidenfrost effect' observed in non-volatile materials? from the following choices.,4180063283
+816,Select the most accurate option: What is Lorentz symmetry or Lorentz invariance in relativistic physics? based on the given context.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.07692307692307693,live_api,select the most accurate option: what is lorentz symmetry or lorentz invariance in relativistic physics? based on the given context.,2367247372
+817,Determine the correct option: What is the Penrose process? among the listed options.,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"However, for options and more complex derivatives, pricing involves developing a complex pricing model: understanding the stochastic process of the price of the underlying asset is often crucial. A key equation for the theoretical valuation of options is the Black–Scholes formula, which is based on the assumption that the cash flows from a European stock option can be replicated by a continuous buying and selling strategy using only the stock. A simplified version of this valuation technique is the binomial options model.
+
+The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.",0.625,local,determine the correct option: what is the penrose process? among the listed options.,3518764312
+818,Select the most accurate option: What is the definition of an improper rotation? based on the given context.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"An arithmetic calendar is one that is based on a strict set of rules; an example is the current Jewish calendar. Such a calendar is also referred to as a rule-based calendar. The advantage of such a calendar is the ease of calculating when a particular date occurs. The disadvantage is imperfect accuracy. Furthermore, even if the calendar is very accurate, its accuracy diminishes slowly over time, owing to changes in Earth's rotation. This limits the lifetime of an accurate arithmetic calendar to a few thousand years. After then, the rules would need to be modified from observations made since the invention of the calendar.
+
+One standard definition is that an angle is a figure consisting of two rays which lie in a plane and share a common endpoint. Alternatively, given such a figure, an angle might be defined as: the opening between the rays; the area of the plane that lies between the rays; or the amount of rotation about the vertex of one ray to the other.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6,local,select the most accurate option: what is the definition of an improper rotation? based on the given context.,3875944839
+819,Choose the correct answer: What is the relationship between dielectric loss and the transparency of a material? from the following choices.,"Dielectric loss in a material can cause refraction, which can lower the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can raise the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can boost the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.
+
+The Deseret alphabet was an outgrowth of the Restorationist idealism and utopianism of Young and the early LDS Church. The ""New Alphabet"" was intended to correct ""the corruptions and perversions of language which was originally pure"", and to meet the urgent need for a language to ""answer the demands of a constant intercommunication between several thousand languages"". One ""fitted to meet the great emergency of the great gathering and great work of teaching the law of the Lord to all people.""",0.5454545454545454,local,choose the correct answer: what is the relationship between dielectric loss and the transparency of a material? from the following choices.,4201916905
+820,Choose the correct answer: What is the role of axioms in a formal principle? from the following choices.,"Basis statements called axioms form the foundation of a formal principle and, together with the deducing rules, help in deriving a set of statements called theorems using proof principle.",Axioms are supplementary statements added to a formal principle that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal framework, providing additional perspective to theorems derived from the framework.",The axioms in a concept are used for experimental validation of the theorems derived from the statements in the concept.,"The axioms in a formal concept are added to prove that the statements derived from the concept are true, irrespective of their validity in the real world.",A,"In addition to familiar number systems such as the rationals, there are other, less immediate examples of fields. The following example is a field consisting of four elements called , , , and . The notation is chosen such that  plays the role of the additive identity element (denoted 0 in the axioms above), and  is the multiplicative identity (denoted  in the axioms above). The field axioms can be verified by using some more field theory, or by direct computation. For example,
+ , which equals , as required by the distributivity.
+
+In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.
+
+Themes
+The Book of Job is an investigation of the problem of divine justice. This problem, known in theology as the problem of evil or theodicy, can be rephrased as a question: ""Why do the righteous suffer?"" The conventional answer in ancient Israel was that God rewards virtue and punishes sin (the principle known as ""retributive justice""). According to this view the moral status of human choices and actions is consequential, but experience demonstrates that suffering is experienced by those who are good.",0.7777777777777778,local,choose the correct answer: what is the role of axioms in a formal principle? from the following choices.,2718039637
+821,Determine the correct option: What is a phageome? carefully.,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.6,local,determine the correct option: what is a phageome? carefully.,3514705553
+822,Select the most accurate option: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? carefully.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,No match found.,0.0,live_api,select the most accurate option: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? carefully.,3807224915
+823,Which of the following is correct? What are permutation-inversion groups? from the following choices.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"A breakthrough in the best known theoretical algorithm for the graph isomorphism problem in 1982
+The Schreier conjecture
+The Signalizer functor theorem
+The B conjecture
+The Schur–Zassenhaus theorem for all groups (though this only uses the Feit–Thompson theorem).
+A transitive permutation group on a finite set with more than 1 element has a fixed-point-free element of prime power order.
+The classification of 2-transitive permutation groups.
+The classification of rank 3 permutation groups.
+The Sims conjecture
+Frobenius's conjecture on the number of solutions of .
+ Non-abelian finite simple groups are characterized by their commuting graphs.
+
+To be a bit more precise, let E be an n-bit block cipher. We imagine the following game:
+ The person running the game flips a coin.
+ If the coin lands on heads, he chooses a random key K and defines the function f = EK.
+ If the coin lands on tails, he chooses a random permutation  on the set of n-bit strings and defines the function f = .
+ The attacker chooses an n-bit string X, and the person running the game tells him the value of f(X).
+ Step 2 is repeated a total of q times. (Each of these q interactions is a query.)
+ The attacker guesses how the coin landed. He wins if his guess is correct.
+
+Over 250 ethnic groups and 450 tribes (ethnic subgroups) populate the Democratic Republic of Congo. These ethnic groups are from the Bantu, Sudanic, Nilotic, Ubangian and Pygmy linguistic groups. There is no dominant ethnic group in Congo; the following ethnic groups account for 51.5% of the population:",0.5714285714285714,local,which of the following is correct? what are permutation-inversion groups? from the following choices.,4047922861
+824,Determine the correct option: What is the purpose of the proximity-focusing design in a RICH detector?,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+Lens design: Lens - In optical engineering, Euclidean geometry is critical in the design of lenses, where precise geometric shapes determine the focusing properties. Geometric optics analyzes the focusing of light by lenses and mirrors.
+alt=Types of lenses|center|thumb|450x450px|Types of Lenses
+
+Demodulation methods
+The simplest form of an AM demodulator consists of a diode configured as an envelope detector.  As described by Frederick Terman in 1943, the diode rectifier was the most widely used detector for AM signals, providing a simple means of recovering the modulation envelope. In 1904, John Ambrose Fleming developed such a circuit for a radio-wave detector in the crystal radio. Adding variable capacitors to the crystal detector enables tuning to a specific frequency.",0.5555555555555556,local,determine the correct option: what is the purpose of the proximity-focusing design in a rich detector?,2930093653
+825,"Pick the best possible answer: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? from the following choices.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"pick the best possible answer: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? from the following choices.",957039470
+826,Which of the following is correct? What happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state?,"The excess base metal will often solidify, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often crystallize-out, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often dissolve, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often liquefy, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often evaporate, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.",B,"Mercury is a chemical element; it has symbol Hg and atomic number 80. It is commonly known as quicksilver. A heavy, silvery d-block element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure. As well as having the lowest freezing point, mercury has the lowest boiling point and subsequently the narrowest liquid state range of any metal at standard conditions.
+Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by grinding natural cinnabar or synthetic mercuric sulfide. Exposure to mercury and mercury-containing organic compounds is toxic to the nervous system, immune system and kidneys of humans and other animals; mercury poisoning can result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury) either directly or through mechanisms of biomagnification.
+Mercury is used in thermometers, barometers, manometers, sphygmomanometers",0.2,live_api,which of the following is correct? what happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state?,3122563485
+827,Identify the correct statement: What is a Schwarzschild black hole? among the listed options.,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.
+
+The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole.",0.3333333333333333,local,identify the correct statement: what is a schwarzschild black hole? among the listed options.,3078509509
+828,Which of the following is correct? What is a magnetic monopole in particle physics? based on the given context.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.
+
+Any configuration of charges or currents has a 'dipole moment', which describes the dipole whose field is the best approximation, at large distances, to that of the given configuration.  This is simply one term in the multipole expansion when the total charge (""monopole moment"") is 0—as it always is for the magnetic case, since there are no magnetic monopoles.  The dipole term is the dominant one at large distances:  Its field falls off in proportion to , as compared to  for the next (quadrupole) term and higher powers of  for higher terms, or  for the monopole term.
+
+Scattering cross sections may be defined in nuclear, atomic, and particle physics for collisions of accelerated beams of one type of particle with targets (either stationary or moving) of a second type of particle. The probability for any given reaction to occur is in proportion to its cross section. Thus, specifying the cross section for a given reaction is a proxy for stating the probability that a given scattering process will occur.",0.6,local,which of the following is correct? what is a magnetic monopole in particle physics? based on the given context.,3622588361
+829,What are coherent turbulent structures?,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the methods of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the methods of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the methods of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the methods of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the methods of time-averaged statistics cannot be applied.",C,"In fluid dynamics, turbulence or turbulent flow is fluid motion exhibiting chaotic changes in pressure and flow velocity.  It is in contrast to laminar flow, which occurs when a fluid flows in parallel layers with no disruption between those layers.
+Turbulence is commonly observed in everyday phenomena such as surf, fast flowing rivers, billowing storm clouds, or smoke from a chimney, and most fluid flows occurring in nature or created in engineering applications are turbulent. Turbulence is caused by excessive kinetic energy in parts of a fluid flow, which overcomes the damping effect of the fluid's viscosity. For this reason, turbulence is commonly realized in low viscosity fluids. In general terms, in turbulent flow, unsteady vortices appear of many sizes which interact with each other, consequently drag due to friction effects increases.
+The onset of turbulence can be predicted by the dimensionless Reynolds number, the ratio of kinetic energy to viscous damping in a fluid flow. How",0.3333333333333333,local,what are coherent turbulent structures?,3568017588
+830,Select the most accurate option: What are the four qualitative levels of crystallinity described by geologists? carefully.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.0,live_api,select the most accurate option: what are the four qualitative levels of crystallinity described by geologists? carefully.,2512091033
+831,Pick the best possible answer: What is the De Haas-Van Alphen effect? carefully.,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.",0.5,local,pick the best possible answer: what is the de haas-van alphen effect? carefully.,1862156510
+832,Identify the correct statement: What are the four qualitative levels of crystallinity described by geologists? based on the given context.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.0,live_api,identify the correct statement: what are the four qualitative levels of crystallinity described by geologists? based on the given context.,3854872301
+833,"Select the most accurate option: Who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"In psychology and cognitive science, cognitive biases are systematic patterns of deviation from norm and/or rationality in judgment.  They are often studied in psychology, sociology and behavioral economics.
+
+A memory bias is a cognitive bias that either enhances or impairs the recall of a memory (either the chances that the memory will be recalled at all, or the amount of time it takes for it to be recalled, or both), or that alters the content of a reported memory.
+Explanations include information-processing rules (i.e., mental shortcuts), called heuristics, that the brain uses to produce decisions or judgments. Biases have a variety of forms and appear as cognitive (""cold"") bias, such as mental noise, or motivational (""hot"") bias, such as when beliefs are distorted by wishful thinking. Both effects can be present at the same time.
+There are also controversies over some of these biases as to whether they count as useless or irrational, or whether they result in useful attitudes or be",0.13333333333333333,live_api,"select the most accurate option: who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",3851319878
+834,Determine the correct option: What is the Einstein@Home project? among the listed options.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option",0.3333333333333333,local,determine the correct option: what is the einstein@home project? among the listed options.,769101064
+835,Which of the following is correct? What are the two main factors that cause resistance in a metal? carefully.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.
+
+The third mode is parapatric speciation. This is similar to peripatric speciation in that a small population enters a new habitat, but differs in that there is no physical separation between these two populations. Instead, speciation results from the evolution of mechanisms that reduce gene flow between the two populations. Generally this occurs when there has been a drastic change in the environment within the parental species' habitat. One example is the grass Anthoxanthum odoratum, which can undergo parapatric speciation in response to localised metal pollution from mines. Here, plants evolve that have resistance to high levels of metals in the soil. Selection against interbreeding with the metal-sensitive parental population produced a gradual change in the flowering time of the metal-resistant plants, which eventually produced complete reproductive isolation. Selection against hybrids between the two populations may cause reinforcement, which is the evolution of traits that promote mating within a species, as well as character displacement, which is when two species become more distinct in appearance.
+
+If the ligands around the metal are carefully chosen, the metal can aid in (stoichiometric or catalytic) transformations of molecules or be used as a sensor.",0.7272727272727273,local,which of the following is correct? what are the two main factors that cause resistance in a metal? carefully.,3903723232
+836,Choose the correct answer: What is the main focus of the Environmental Science Center at Qatar University? among the listed options.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Disinformation attacks are strategic deception campaigns involving media manipulation and internet manipulation, to disseminate misleading information, aiming to confuse, paralyze, and polarize an audience. Disinformation can be considered an attack when it involves orchestrated and coordinated efforts to build an adversarial narrative campaign that weaponizes multiple rhetorical strategies and forms of knowing—including not only falsehoods but also truths, half-truths, and value-laden judgments—to exploit and amplify identity-driven controversies. Disinformation attacks use media manipulation to target broadcast media like state-sponsored TV channels and radios. Due to the increasing use of internet manipulation on social media, they can be considered a cyber threat. Digital tools such as bots, algorithms, and AI technology, along with human agents including influencers, spread and amplify disinformation to micro-target populations on online platforms like Instagram, Twitter, Google,",0.0,live_api,choose the correct answer: what is the main focus of the environmental science center at qatar university? among the listed options.,3067951259
+837,Identify the correct statement: What is the Ramsauer-Townsend effect? from the following choices.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a non-noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a noble gas. It requires the wave framework of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a non-noble gas. It requires the wave framework of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of electrons by atoms of any gas. It can be explained by classical mechanics.,B,No match found.,0.0,live_api,identify the correct statement: what is the ramsauer-townsend effect? from the following choices.,2228528074
+838,Select the most accurate option: What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? from the following choices.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.",0.5384615384615384,local,select the most accurate option: what is the relationship between the cauchy momentum equation and the navier-stokes equation? from the following choices.,921151542
+839,Which of the following is correct? What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? carefully.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,This glossary of engineering terms is a list of definitions about the major concepts of engineering. Please see the bottom of the page for glossaries of specific fields of engineering.,0.0,live_api,which of the following is correct? what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? carefully.,2937692370
+840,Determine the correct option: What is a virtual particle? among the listed options.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+The triplet deuteron nucleon is barely bound at , and none of the higher energy states are bound. The singlet deuteron is a virtual state, with a negative binding energy of . There is no such stable particle, but this virtual particle transiently exists during neutron–proton inelastic scattering, accounting for the unusually large neutron scattering cross-section of the proton.",0.5,local,determine the correct option: what is a virtual particle? among the listed options.,2672939473
+841,Identify the correct statement: Who was Giordano Bruno? based on the given context.,A German philosopher who supported the Keplerian concept that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic framework that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian concept that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican principle that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean principle that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""
+
+In the sixteenth century, the Italian philosopher Giordano Bruno, an early supporter of the Copernican theory that Earth and other planets orbit the Sun (heliocentrism), put forward the view that fixed stars are similar to the Sun and are likewise accompanied by planets.
+
+The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8",0.3333333333333333,local,identify the correct statement: who was giordano bruno? based on the given context.,3894737340
+842,Determine the correct option: What is the role of the Higgs boson in the Standard Model? carefully.,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.4444444444444444,local,determine the correct option: what is the role of the higgs boson in the standard model? carefully.,2158264341
+843,Pick the best possible answer: What is the SI base unit of time and how is it defined? from the following choices.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by
+
+As the speed of light has an exact defined value in SI units and the Gaussian gravitational constant  is fixed in the astronomical system of units, measuring the light time per unit distance is exactly equivalent to measuring the product × in SI units. Hence, it is possible to construct ephemerides entirely in SI units, which is increasingly becoming the norm.",0.7272727272727273,local,pick the best possible answer: what is the si base unit of time and how is it defined? from the following choices.,2358426738
+844,Identify the correct statement: Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions? among the listed options.,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+Wigner was awarded the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"". The prize was shared that year, with the other half of the award divided between Maria Goeppert-Mayer and J. Hans D. Jensen. Wigner professed that he had never considered the possibility that this might occur, and added: ""I never expected to get my name in the newspapers without doing something wicked."" He also won the Franklin Medal in 1950, the Enrico Fermi award in 1958, the Atoms for Peace Award in 1959, the Max Planck Medal in 1961, the National Medal of Science in 1969, the Albert Einstein Award in 1972, the Golden Plate Award of the American Academy of Achievement in 1974, the eponymous Wigner Medal in 1978, and the Herzl Prize in 1982. In 1968 he gave the Josiah Willard Gibbs lecture.
+
+Sheldon Glashow,Glashow, S. (1959). ""The renormalizability of vector meson interactions."" Nucl. Phys. 10, 107. Abdus Salam, and Steven Weinberg were awarded the 1979 Nobel Prize in Physics for their contributions to the unification of the weak and electromagnetic interaction between elementary particles, known as the Weinberg–Salam theory. The existence of the electroweak interactions was experimentally established in two stages, the first being the discovery of neutral currents in neutrino scattering by the Gargamelle collaboration in 1973, and the second in 1983 by the UA1 and the UA2 collaborations that involved the discovery of the W and Z gauge bosons in proton–antiproton collisions at the converted Super Proton Synchrotron. In 1999, Gerardus 't Hooft and Martinus Veltman were awarded the Nobel prize for showing that the electroweak theory is renormalizable.",0.42857142857142855,local,identify the correct statement: who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions? among the listed options.,2768804869
+845,Choose the correct answer: What is radiometric dating? based on the given context.,"Radiometric dating is a procedure of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"Prehistory
+The territory now known as Chad possesses some of the richest archaeological sites in Africa. A hominid skull was found by Michel Brunet, that is more than 7 million years old, the oldest discovered anywhere in the world; it has been given the name Sahelanthropus tchadensis. In 1996 Brunet unearthed a hominid jaw, which he named Australopithecus bahrelghazali, unofficially dubbed Abel. It was dated using beryllium-based radiometric dating as living  3.6 million years ago.",0.5,local,choose the correct answer: what is radiometric dating? based on the given context.,3043795975
+846,"Determine the correct option: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"As it originated from a need to express power ratios, two principal types of scaling of the decibel are used to provide consistency depending on whether the scaling refers to ratios of power quantities or root-power quantities. When expressing a power ratio, the corresponding change in decibels is defined as ten times the logarithm with base 10 of that ratio. That is, a change in power by a factor of 10 corresponds to a 10 dB change in level. When expressing root-power ratios, a change in amplitude by a factor of 10 corresponds to a 20 dB change in level. The decibel scales differ by a factor of two, so that the related power and root-power levels change by the same value in linear systems, where power is proportional to the square of amplitude.
+
+Reporting large ratios 
+The logarithmic scale nature of the decibel means that a very large range of ratios can be represented by a convenient number. For example, 50 dB is easier to say than ""the two powers bear a 100,000 to 1 ratio"" or that ""one power is 10 the other"". Decibels express huge changes of a quantity with few digits of dB.",0.4,local,"determine the correct option: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.",3421142451
+847,"Identify the correct statement: What are amorphous ferromagnetic metallic alloys, and what are their advantages?","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,"Graphene () is a variety of the element carbon which occurs naturally in small amounts. In graphene, the carbon forms a sheet of interlocked atoms as hexagons one carbon atom thick. The result resembles the face of a honeycomb. When many hundreds of graphene layers build up, they are called graphite.
+In technical terms, graphene is a carbon allotrope consisting of a single layer of atoms arranged in a honeycomb planar nanostructure. The name ""graphene"" is derived from ""graphite"" and the suffix  -ene, indicating the presence of double bonds within the carbon structure.
+Graphene is known for its exceptionally high tensile strength, electrical conductivity, transparency, and being the thinnest two-dimensional material in the world. Despite the nearly transparent nature of a single graphene sheet, graphite (formed from stacked layers of graphene) appears black because it absorbs all visible light wavelengths. On a microscopic scale, graphene is the strongest material ever measured.
+
+The ex",0.0,live_api,"identify the correct statement: what are amorphous ferromagnetic metallic alloys, and what are their advantages?",3103633264
+848,"Determine the correct option: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? based on the given context.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The concept of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals
+
+In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).",0.5714285714285714,local,"determine the correct option: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? based on the given context.",2510852341
+849,Choose the correct answer: What is Modified Newtonian Dynamics (MOND)? based on the given context.,MOND is a principle that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's concept of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a principle that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,"Although the astrophysics community generally accepts the existence of dark matter, a minority of astrophysicists, intrigued by specific observations that are not well explained by ordinary dark matter, argue for various modifications of the standard laws of general relativity. These include modified Newtonian dynamics (MOND), tensor–vector–scalar gravity, and entropic gravity. So far none of the proposed modified gravity theories can describe every piece of observational evidence at the same time, suggesting that even if gravity has to be modified, some form of dark matter will still be required.",0.4,local,choose the correct answer: what is modified newtonian dynamics (mond)? based on the given context.,1196983722
+850,Choose the correct answer: What is a Hilbert space in quantum mechanics?,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical framework is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",0.5714285714285714,local,choose the correct answer: what is a hilbert space in quantum mechanics?,2419319527
+851,"Identify the correct statement: Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields? among the listed options.","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.
+
+The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.",0.42857142857142855,local,"identify the correct statement: which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields? among the listed options.",662151783
+852,Choose the correct answer: Which of the following statements accurately describes the dimension of an object in a CW complex? from the following choices.,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+The dimension is an intrinsic property of an object, in the sense that it is independent of the dimension of the space in which the object is or can be embedded. For example, a curve, such as a circle, is of dimension one, because the position of a point on a curve is determined by its signed distance along the curve to a fixed point on the curve. This is independent from the fact that a curve cannot be embedded in a Euclidean space of dimension lower than two, unless it is a line. Similarly, a surface is of dimension two, even if embedded in three-dimensional space.",0.3076923076923077,local,choose the correct answer: which of the following statements accurately describes the dimension of an object in a cw complex? from the following choices.,3977577359
+853,Select the most accurate option: What is the Kutta condition? carefully.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"In computational mathematics, a stiff equation is an initial value problem
+
+  
+    
+      
+        
+          
+            
+              u
+              ˙
+            
+          
+        
+        =
+        f
+        (
+        u
+        )
+        
+        ,
+        
+        u
+        (
+        0
+        )
+        =
+        
+          u
+          
+            0
+          
+        
+        
+        ,
+        
+        t
+        ∈
+        [
+        0
+        ,
+        T
+        ]
+        
+        ,
+      
+    
+    {\displaystyle {\dot {u}}=f(u)\,,\qquad u(0)=u_{0}\,,\qquad t\in [0,T]\,,}
+  
+
+where 
+  
+    
+      
+        f
+        :
+        
+          
+            
+              R
+            
+          
+          
+            d
+          
+        
+        →
+        
+          
+            
+              R
+            
+          
+          
+            d
+          
+        
+      
+    
+    {\displaystyle f:{\mathbb {R} }^{d}\rightarrow {\mathbb {R} }^{d}}
+  
+, requiring dedicated implicit",0.0,live_api,select the most accurate option: what is the kutta condition? carefully.,4277037206
+854,Determine the correct option: What is the Penrose process?,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+An option ROM should normally return to the BIOS after completing its initialization process. Once (and if) an option ROM returns, the BIOS continues searching for more option ROMs, calling each as it is found, until the entire option ROM area in the memory space has been scanned. It is possible that an option ROM will not return to BIOS, pre-empting the BIOS's boot sequence altogether.",1.0,local,determine the correct option: what is the penrose process?,3969573570
+855,Pick the best possible answer: What was Pierre de Fermat's solution to the problem of refraction?,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Pierre de Fermat also pioneered the development of analytic geometry. Although not published in his lifetime, a manuscript form of Ad locos planos et solidos isagoge (Introduction to Plane and Solid Loci) was circulating in Paris in 1637, just prior to the publication of Descartes' Discourse.Pierre de Fermat, Varia Opera Mathematica d. Petri de Fermat, Senatoris Tolosani (Toulouse, France:  Jean Pech, 1679), ""Ad locos planos et solidos isagoge,"" pp. 91–103. ""Eloge de Monsieur de Fermat""  (Eulogy of Mr. de Fermat), Le Journal des Scavans, 9 February 1665, pp. 69–72.  From p. 70:  ""Une introduction aux lieux, plans & solides; qui est un traité analytique concernant la solution des problemes plans & solides, qui avoit esté veu devant que M. des Cartes eut rien publié sur ce sujet.""  (An introduction to loci, plane and solid; which is an analytical treatise concerning the solution of plane and solid problems, which was seen before Mr. des Cartes had published anything on this subject.) Clearly written and well received, the Introduction also laid the groundwork for analytical geometry. The key difference between Fermat's and Descartes' treatments is a matter of viewpoint: Fermat always started with an algebraic equation and then described the geometric curve that satisfied it, whereas Descartes started with geometric curves and produced their equations as one of several properties of the curves. As a consequence of this approach, Descartes had to deal with more complicated equations and he had to develop the methods to work with polynomial equations of higher degree. It was Leonhard Euler who first applied the coordinate method in a systematic study of space curves and surfaces.",0.5833333333333334,local,pick the best possible answer: what was pierre de fermat's solution to the problem of refraction?,78887438
+856,Choose the correct answer: What is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.4166666666666667,local,choose the correct answer: what is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,3527141241
+857,Identify the correct statement: What is the spin quantum number?,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+There is another quantity of angular momentum, called the orbital angular momentum (azimuthal quantum number ), that comes in increments of , which represent the angular moment due to quarks orbiting around each other. The total angular momentum (total angular momentum quantum number J) of a particle is therefore the combination of intrinsic angular momentum (spin) and orbital angular momentum. It can take any value from  to , in increments of 1.
++ Baryon angular momentum quantum numbers for  Spin, S Orbital angular momentum, L Total angular momentum, J Parity, P Condensed notation, JP  0    +  + 1  ,   −  −, − 2  ,   +  +, + 3  ,   −  −, −  0    +  + 1  , ,   −  −, −, − 2  , , ,   +  +, +, +, + 3  , , ,   −  −, −, −, −",0.5,local,identify the correct statement: what is the spin quantum number?,3851391748
+858,Which of the following is correct? What is a pycnometer?,A device used to measure the density of a gas.,A device used to measure the mass of a liquid.,A device used to measure the volume of a gas.,A device used to determine the density of a liquid.,A device used to determine the volume of a liquid.,D,"Measurement 
+A number of techniques as well as standards exist for the measurement of density of materials. Such techniques include the use of a hydrometer (a buoyancy method for liquids), hydrostatic weighing (a buoyancy method for liquids and solids), immersed body method (a buoyancy method for liquids), pycnometer (liquids and solids), air comparison pycnometer (solids), oscillating U-tube (liquids), as well as pour and tap (solids). However, each individual method or technique measures different types of density (e.g. bulk density, skeletal density, etc.), and therefore it is necessary to have an understanding of the type of density  being measured as well as the type of material in question.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Modeling language acquisition
+The fact that during language acquisition, children are largely only exposed to positive evidence,Bowerman, M. (1988). The ""no negative evidence"" problem: How do children avoid constructing an overly general grammar. Explaining language universals. meaning that the only evidence for what is a correct form is provided, and no evidence for what is not correct,Braine, M.D.S. (1971). On two types of models of the internalization of grammars. In D.I. Slobin (Ed.), The ontogenesis of grammar: A theoretical perspective. New York: Academic Press. was a limitation for the models at the time because the now available deep learning models were not available in late 1980s.Powers, D.M.W. & Turk, C.C.R. (1989). Machine Learning of Natural Language. Springer-Verlag. .",0.75,local,which of the following is correct? what is a pycnometer?,3991510125
+859,Identify the correct statement: What is the role of methane in Fischer-Tropsch processes? among the listed options.,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,"The possibility of life on Mars is a subject of interest in astrobiology due to the planet's proximity and similarities to Earth. To date, no conclusive evidence of past or present life has been found on Mars. Cumulative evidence suggests that during the ancient Noachian time period, the surface environment of Mars had liquid water and may have been habitable for microorganisms, but habitable conditions do not necessarily indicate life. Scientific  investigations for potential life on Mars began in the 19th century and continue today with telescopes and robotic probes searching for water, chemical biosignatures in the soil and rocks at the planet's surface, and biomarker gases in the atmosphere.
+Mars is of particular interest for the study of the origins of life because of its similarity to the early Earth. This is especially true since Mars has a cold climate and lacks plate tectonics or continental drift, so it has remained almost unchanged since the end of the Hesperian period. At l",0.0,live_api,identify the correct statement: what is the role of methane in fischer-tropsch processes? among the listed options.,3621438561
+860,Determine the correct option: What is the Kutta condition? among the listed options.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.375,local,determine the correct option: what is the kutta condition? among the listed options.,3882131720
+861,Which of the following is correct? What is the Einstein@Home project? from the following choices.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"Following the discovery of the recession of the galaxies by Edwin Hubble in 1929, Einstein abandoned his static model of the universe, and proposed two dynamic models of the cosmos, the Friedmann–Einstein universe of 1931Einstein (1931). and the Einstein–de Sitter universe of 1932.Einstein & de Sitter (1932). In each of these models, Einstein discarded the cosmological constant, claiming that it was ""in any case theoretically unsatisfactory"".
+
+Einstein returned to the problem of thermodynamic fluctuations, giving a treatment of the density variations in a fluid at its critical point. Ordinarily, the density fluctuations are controlled by the second derivative of the free energy with respect to the density. At the critical point, this derivative is zero, leading to large fluctuations. The effect of density fluctuations is that light of all wavelengths is scattered, making the fluid look milky white. Einstein relates this to Rayleigh scattering, which is what happens when the fluctuation size is much smaller than the wavelength, and which explains why the sky is blue. Einstein quantitatively derived critical opalescence from a treatment of density fluctuations, and demonstrated how both the effect and Rayleigh scattering originate from the atomistic constitution of matter.
+
+Einstein never fully accepted quantum mechanics. While he recognized that it made correct predictions, he believed a more fundamental description of nature must be possible. Over the years he presented multiple arguments to this effect, but the one he preferred most dated to a debate with Bohr in 1930. Einstein suggested a thought experiment in which two objects are allowed to interact and then moved apart a great distance from each other. The quantum-mechanical description of the two objects is a mathematical entity known as a wavefunction. If the wavefunction that describes the two objects before their interaction is given, then the Schrödinger equation provides the wavefunction that describes them after their interaction. But because of what would later be called quantum entanglement, measuring one object would lead to an instantaneous change of the wavefunction describing the other object, no matter how far away it is. Moreover, the choice of which measurement to perform upon the first object would affect what wavefunction could result for the second object. Einstein reasoned that no influence could propagate from the first object to the second instantaneously fast. Indeed, he argued, physics depends on being able to tell one thing apart from another, and such instantaneous influences would call that into question. Because the true ""physical condition"" of the second object could not be immediately altered by an action done to the first, Einstein concluded, the wavefunction could not be that true physical condition, only an incomplete description of it.",0.5714285714285714,local,which of the following is correct? what is the einstein@home project? from the following choices.,1934499231
+862,Pick the best possible answer: Which of the following statements accurately describes the dimension of an object in a CW complex?,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+An inductive dimension may be defined inductively as follows. Consider a discrete set of points (such as a finite collection of points) to be 0-dimensional. By dragging a 0-dimensional object in some direction, one obtains a 1-dimensional object. By dragging a 1-dimensional object in a new direction, one obtains a 2-dimensional object. In general, one obtains an ()-dimensional object by dragging an -dimensional object in a new direction. The inductive dimension of a topological space may refer to the small inductive dimension or the large inductive dimension, and is based on the analogy that, in the case of metric spaces,  balls have -dimensional boundaries, permitting an inductive definition based on the dimension of the boundaries of open sets. Moreover, the boundary of a discrete set of points is the empty set, and therefore the empty set can be taken to have dimension −1. Extract of page 24",0.3076923076923077,local,pick the best possible answer: which of the following statements accurately describes the dimension of an object in a cw complex?,1654941272
+863,Select the most accurate option: What is a crossover experiment? from the following choices.,An experiment that involves crossing over two different types of materials to create a new material.,"A type of experiment used to distinguish between different mechanisms proposed for a chemical reaction, such as intermolecular vs. intramolecular mechanisms.",An experiment that involves crossing over two different types of organisms to create a hybrid.,An experiment that involves crossing over two different types of cells to create a new cell.,An experiment that involves crossing over two different chemicals to create a new substance.,B,"Assassin's Creed Odyssey is a 2018 action role-playing game developed by Ubisoft Quebec and published by Ubisoft. It is the eleventh major installment in the Assassin's Creed series and the successor to Assassin's Creed Origins (2017). Like its predecessor, the game features a large open world and adopts many elements from the role-playing genre, putting more emphasis on combat and exploration than stealth. Naval combat from previous titles in the series also plays a prominent role in Odyssey. The game's plot tells a mythological history of the Peloponnesian War between Athens and Sparta from 431 to 422 BCE. Players control a Spartan mercenary, who fights on both sides of the conflict as they attempt to find their family and eliminate the mysterious Cult of Kosmos. Odyssey also continues the story arc of Layla Hassan, who relives the mercenary's memories through the Animus device to find a powerful artifact.
+Development of the game commenced shortly following the release of Assassin's",0.125,live_api,select the most accurate option: what is a crossover experiment? from the following choices.,2467089148
+864,Which of the following is correct? What is the second law of thermodynamics?,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated structures left to spontaneous evolution can lower, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic framework and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.
+
+Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.
+
+Entropy is central to the second law of thermodynamics, which states that the entropy of an isolated system left to spontaneous evolution cannot decrease with time. As a result, isolated systems evolve toward thermodynamic equilibrium, where the entropy is highest. ""High"" entropy means that energy is more disordered or dispersed, while ""low"" entropy means that energy is more ordered or concentrated. A consequence of the second law of thermodynamics is that certain processes are irreversible.",0.6666666666666666,local,which of the following is correct? what is the second law of thermodynamics?,3623149154
+865,Choose the correct answer: What is the Liouville density?,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+In 1842, Joseph Liouville began studying Galois's unpublished papers and acknowledged their value in 1843. It is not clear what happened in the ten years between 1832 and 1842 nor what eventually inspired Liouville to begin reading Galois's papers. Jesper Lützen explores this subject at some length in Chapter XIV Galois Theory of his book about Joseph Liouville without reaching any definitive conclusions.
+
+Such questions can be answered jes (yes) or ne (no) in the European fashion of aligning with the polarity of the answer, or ĝuste (correct) or malĝuste (incorrect) in the Japanese fashion of aligning with the polarity of the question:",0.6,local,choose the correct answer: what is the liouville density?,1301518183
+866,Select the most accurate option: What is the proper distance for a redshift of 8.2? among the listed options.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+James W. Brault, a graduate student of Robert Dicke at Princeton University, measured the gravitational redshift of the sun using optical methods in 1962. In 2020, a team of scientists published the most accurate measurement of the solar gravitational redshift so far, made by analyzing Fe spectral lines in sunlight reflected by the Moon; their measurement of a mean global 638 ± 6 m/s lineshift is in agreement with the theoretical value of 633.1 m/s. Measuring the solar redshift is complicated by the Doppler shift caused by the motion of the Sun's surface, which is of similar magnitude as the gravitational effect.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.",0.4166666666666667,local,select the most accurate option: what is the proper distance for a redshift of 8.2? among the listed options.,4286414810
+867,Choose the correct answer: What is the information loss paradox in black holes?,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.
+
+Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .
+
+Black holes have been portrayed in science fiction in a variety of ways. Even before the advent of the term itself, objects with characteristics of black holes appeared in stories such as the 1928 novel The Skylark of Space with its ""black Sun"" and the ""hole in space"" in the 1935 short story Starship Invincible. As black holes grew to public recognition in the 1960s and 1970s, they began to be featured in films as well as novels, such as Disney's The Black Hole. Black holes have also been used in works of the 21st century, such as Christopher Nolan's science fiction epic Interstellar.",0.75,local,choose the correct answer: what is the information loss paradox in black holes?,937243061
+868,Identify the correct statement: What did Fresnel predict and verify with regards to total internal reflections? among the listed options.,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.07142857142857142,live_api,identify the correct statement: what did fresnel predict and verify with regards to total internal reflections? among the listed options.,1995071772
+869,Select the most accurate option: What is the significance of the redshift-distance relationship in determining the expansion history of the universe? carefully.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+Measurements of the redshift–magnitude relation for type Ia supernovae indicate that the expansion of the universe has been accelerating since the universe was about half its present age. To explain this acceleration, cosmological models require that much of the energy in the universe consists of a component with large negative pressure, dubbed ""dark energy"".
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.",0.38461538461538464,local,select the most accurate option: what is the significance of the redshift-distance relationship in determining the expansion history of the universe? carefully.,2471240704
+870,Identify the correct statement: What is the information loss paradox in black holes? among the listed options.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.",0.45454545454545453,local,identify the correct statement: what is the information loss paradox in black holes? among the listed options.,1164269779
+871,Choose the correct answer: Which mathematical function is commonly used to characterize linear time-invariant frameworks? among the listed options.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,"This glossary of computer science is a list of definitions of terms and concepts used in computer science, its sub-disciplines, and related fields, including terms relevant to software, data science, and computer programming.",0.0625,live_api,choose the correct answer: which mathematical function is commonly used to characterize linear time-invariant frameworks? among the listed options.,4233633117
+872,Choose the correct answer: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? from the following choices.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,choose the correct answer: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? from the following choices.,2790888069
+873,Pick the best possible answer: What is the Liouville density? carefully.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,No match found.,0.0,live_api,pick the best possible answer: what is the liouville density? carefully.,2006209868
+874,What is the Erlangen program?,"The Erlangen program is a method of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a method of characterizing geometries based on group theory and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a method of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a method of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a method of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+In 2021, the Student Council of the University of Erlangen–Nuremberg changed the name of their Süd-Campus into Rommel-Campus, emphasising that the city of Erlangen stands behind the name and the university needs to do the same. The university's branch of the Education and Science Workers' Union describes the decision as problematic considering Rommel's history of supporting the Nazi regime.
+
+Biography
+He graduated in 1981 with a degree in Romance linguistics from the University of Erlangen–Nuremberg, a subject in which he earned a Doctor of Philosophy with Heinrich Kuen, and landed at the University of Cagliari as a lecturer in the Catalan language in the Faculty of Education.",1.0,local,what is the erlangen program?,2079268660
+875,Which of the following is correct? What is the significance of the discovery of the Crab pulsar? from the following choices.,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+The approach to acting adopted by other theatre practitioners involve varying degrees of concern with the semiotics of acting. Konstantin Stanislavski, for example, addresses the ways in which an actor, building on what he calls the ""experiencing"" of a role, should also shape and adjust a performance in order to support the overall significance of the drama—a process that he calls establishing the ""perspective of the role"". The semiotics of acting plays a far more central role in Bertolt Brecht's epic theatre, in which an actor is concerned to bring out clearly the socio historical significance of behaviour and action by means of specific performance choices—a process that he describes as establishing the ""not/but"" element in a performed physical ""gestus"" within context of the play's overall ""Fabel"". Eugenio Barba argues that actors ought not to concern themselves with the significance of their performance behaviour; this aspect is the responsibility, he claims, of the director, who weaves the signifying elements of an actor's performance into the director's dramaturgical ""montage"".",0.75,local,which of the following is correct? what is the significance of the discovery of the crab pulsar? from the following choices.,1630289603
+876,Identify the correct statement: What is a trophic level in an ecological pyramid?,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecoframework.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",0.8571428571428571,local,identify the correct statement: what is a trophic level in an ecological pyramid?,152563102
+877,Determine the correct option: What did Newton adopt after his correspondence with Hooke in 1679-1680? from the following choices.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,determine the correct option: what did newton adopt after his correspondence with hooke in 1679-1680? from the following choices.,3492254086
+878,What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs?,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is important for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is important for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is important for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,"The study of the primordial soup: Researchers are investigating the conditions and ingredients that were present on the early Earth that could have led to the formation of the first living organisms, such as the presence of water and organic molecules, and how these ingredients could have led to the formation of the first living organisms. This includes the role of water in the formation of the first cells and in catalysing chemical reactions.
+
+The fas receptor  (First apoptosis signal) – (also known as Apo-1 or CD95) is a transmembrane protein of the TNF family which binds the Fas ligand (FasL). The interaction between Fas and FasL results in the formation of the death-inducing signaling complex (DISC), which contains the FADD, caspase-8 and caspase-10. In some types of cells (type I), processed caspase-8 directly activates other members of the caspase family, and triggers the execution of apoptosis of the cell. In other types of cells (type II), the Fas-DISC starts a feedback loop that spirals into increasing release of proapoptotic factors from mitochondria and the amplified activation of caspase-8.
+
+Role in cell division
+Centrioles are involved in the organization of the mitotic spindle and in the completion of cytokinesis. Centrioles were previously thought to be required for the formation of a mitotic spindle in animal cells. However, more recent experiments have demonstrated that cells whose centrioles have been removed via laser ablation can still progress through the G1 stage of interphase before centrioles can be synthesized later in a de novo fashion. Additionally, mutant flies lacking centrioles develop normally, although the adult flies' cells lack flagella and cilia and as a result, they die shortly after birth.
+The centrioles can self replicate during cell division.",0.5,local,what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs?,862590513
+879,"Select the most accurate option: Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields? based on the given context.","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.
+
+The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.",0.4090909090909091,local,"select the most accurate option: which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields? based on the given context.",1716122315
+880,What is the relationship between dielectric loss and the transparency of a material?,"Dielectric loss in a material can cause refraction, which can decrease the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can increase the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can increase the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+One economist's analysis calculates that despite increased overall spending, Christmas is a deadweight loss under orthodox microeconomic theory, because of the effect of gift-giving. This loss is calculated as the difference between what the gift giver spent on the item and what the gift receiver would have paid for the item. It is estimated that in 2001, Christmas resulted in a $4billion deadweight loss in the US alone.Joel Waldfogel ""The Deadweight Loss of Christmas"" (PDF), American Economic Review, December 1993, 83 (5). Retrieved December 25, 2023.""Is Santa a deadweight loss?"" (). The Economist December 20, 2001. Because of complicating factors, this analysis is sometimes used to discuss possible flaws in current microeconomic theory. Other deadweight losses include the effects of Christmas on the environment and the fact that material gifts are often perceived as white elephants, imposing cost for upkeep and storage and contributing to clutter.Reuters. ""Christmas is Damaging the Environment, Report Says"" , December 16, 2005.
+
+Interventions that reduce feelings of uncertainty, anxiety, or powerlessness result in a reduction in conspiracy beliefs. Other possible strategies to mitigate the effect of conspiracy theories include education, media literacy, and increasing governmental openness and transparency. Due to the relationship between conspiracy theories and political extremism, the academic literature on deradicalization is also important.",1.0,local,what is the relationship between dielectric loss and the transparency of a material?,2514669084
+881,Choose the correct answer: What is the role of CYCLOIDEA genes in the evolution of bilateral symmetry? carefully.,CYCLOIDEA genes are responsible for the selection of symmetry in the evolution of animals.,"CYCLOIDEA genes are responsible for the evolution of specialized pollinators in plants, which in turn led to the transition of radially symmetrical flowers to bilaterally symmetrical flowers.","CYCLOIDEA genes are responsible for the expression of dorsal petals in Antirrhinum majus, which control their size and shape.","CYCLOIDEA genes are responsible for the expression of transcription factors that control the expression of other genes, allowing their expression to influence developmental pathways relating to symmetry.",CYCLOIDEA genes are responsible for mutations that cause a reversion to radial symmetry.,D,"The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.
+
+In many of his writings, Mayr rejected reductionism in evolutionary biology, arguing that evolutionary pressures act on the whole organism, not on single genes, and that genes can have different effects depending on the other genes present. He advocated a study of the whole genome, rather than of only isolated genes. After articulating the biological species concept in 1942, Mayr played a central role in the species problem debate over what was the best species concept. He staunchly defended the biological species concept against the many definitions of ""species"" that others proposed.
+
+Although the semi-localized textbook σ-π separation model describes the bonding of allene using a pair of localized orthogonal π orbitals, the full molecular orbital description of the bonding is more subtle.  The symmetry-correct doubly-degenerate HOMOs of allene (adapted to the D2d point group) can either be represented by a pair of orthogonal MOs or as twisted helical linear combinations of these orthogonal MOs.  The symmetry of the system and the degeneracy of these orbitals imply that both descriptions are correct (in the same way that there are infinitely many ways to depict the doubly-degenerate HOMOs and LUMOs of benzene that correspond to different choices of eigenfunctions in a two-dimensional eigenspace).  However, this degeneracy is lifted in substituted allenes, and the helical picture becomes the only symmetry-correct description for the HOMO and HOMO–1 of the C2-symmetric . This qualitative MO description extends to higher odd-carbon cumulenes (e.g., 1,2,3,4-pentatetraene).",0.7,local,choose the correct answer: what is the role of cycloidea genes in the evolution of bilateral symmetry? carefully.,1622419003
+882,Identify the correct statement: What is the relationship between the Wigner function and the density matrix operator? among the listed options.,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+The relationship between the angular momentum operator and the rotation operators is the same as the relationship between Lie algebras and Lie groups in mathematics. The close relationship between angular momentum and rotations is reflected in Noether's theorem that proves that angular momentum is conserved whenever the laws of physics are rotationally invariant.
+
+Wigner received a request from Arnold Sommerfeld to work at the University of Göttingen as an assistant to the great mathematician David Hilbert. This proved a disappointment, as the aged Hilbert's abilities were failing, and his interests had shifted to logic. Wigner nonetheless studied independently. He laid the foundation for the theory of symmetries in quantum mechanics and in 1927 introduced what is now known as the Wigner D-matrix. Wigner and Hermann Weyl were responsible for introducing group theory into quantum mechanics. The latter had written a standard text, Group Theory and Quantum Mechanics (1928), but it was not easy to understand, especially for younger physicists. Wigner's Group Theory and Its Application to the Quantum Mechanics of Atomic Spectra (1931) made group theory accessible to a wider audience.",0.46153846153846156,local,identify the correct statement: what is the relationship between the wigner function and the density matrix operator? among the listed options.,725655584
+883,Identify the correct statement: What is the metallicity of Kapteyn's star estimated to be? from the following choices.,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.",0.36363636363636365,local,identify the correct statement: what is the metallicity of kapteyn's star estimated to be? from the following choices.,1556307649
+884,"Which of the following is correct? What is the ""ultraviolet catastrophe""? based on the given context.",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven concept about the distribution of electromagnetic radiation.,B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Other biblical figures
+Apart from the king (or kings) of Gerar, the Bible also records this name for:
+The father of Abiathar, and high priest in the time of David. In the parallel passage, the name is given as Ahimelech; most authorities consider this the more correct reading.
+The king of Gath better known as Achish, referred to as Abimelech or Achimelech in the title of Psalm 34.
+The husband of Naomi, and father of Mahlon and Chilion who leaves Bethlehem and dies in the land of Moab, in the Hebrew, his name is given as Elimelek, which is likely the correct reading.
+
+An anomaly arose in the late 19th century involving a contradiction between the wave theory of light and measurements of the electromagnetic spectra that were being emitted by thermal radiators known as black bodies. Physicists struggled with this problem unsuccessfully for many years, and it later became known as the ultraviolet catastrophe. In 1900, Max Planck developed a new theory of black-body radiation that explained the observed spectrum. Planck's theory was based on the idea that black bodies emit light (and other electromagnetic radiation) only as discrete bundles or packets of energy. These packets were called quanta. In 1905, Albert Einstein proposed that light quanta be regarded as real particles. Later the particle of light was given the name photon, to correspond with other particles being described around this time, such as the electron and proton. A photon has an energy, E, proportional to its frequency, f, by",0.875,local,"which of the following is correct? what is the ""ultraviolet catastrophe""? based on the given context.",1088838681
+885,Choose the correct answer: What is Lorentz symmetry or Lorentz invariance in relativistic physics? among the listed options.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.16666666666666666,live_api,choose the correct answer: what is lorentz symmetry or lorentz invariance in relativistic physics? among the listed options.,672074021
+886,Choose the correct answer: What is the Evans balance? carefully.,"The Evans balance is a mechanism used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a mechanism used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a mechanism used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a framework used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a structure used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.3333333333333333,local,choose the correct answer: what is the evans balance? carefully.,2226343828
+887,Pick the best possible answer: What did Newton's manuscripts of the 1660s show?,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,No match found.,0.0,live_api,pick the best possible answer: what did newton's manuscripts of the 1660s show?,1852168676
+888,Determine the correct option: What is Hesse's principle of transfer in geometry? carefully.,Hesse's principle of transfer is a concept in biology that explains the transfer of genetic information from one generation to another.,Hesse's principle of transfer is a concept in chemistry that explains the transfer of electrons between atoms in a chemical reaction.,Hesse's principle of transfer is a concept in physics that explains the transfer of energy from one object to another.,Hesse's principle of transfer is a concept in economics that explains the transfer of wealth from one individual to another.,"Hesse's principle of transfer is a concept in geometry that states that if the points of the projective line P1 are depicted by a rational normal curve in Pn, then the group of the projective transformations of Pn that preserve the curve is isomorphic to the group of the projective transformations of P1.",E,No match found.,0.0,live_api,determine the correct option: what is hesse's principle of transfer in geometry? carefully.,3784708535
+889,Select the most accurate option: What is a Hilbert space in quantum mechanics? carefully.,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical structure is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical structure is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",0.4444444444444444,local,select the most accurate option: what is a hilbert space in quantum mechanics? carefully.,873672788
+890,Choose the correct answer: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere?,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,choose the correct answer: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere?,3683312229
+891,Pick the best possible answer: What is classical mechanics? from the following choices.,"Classical mechanics is the branch of physics that describes the motion of macroscopic objects using concepts such as mass, acceleration, and force. It is based on a three-dimensional Euclidean space with fixed axes, and utilises many equations and mathematical concepts to relate physical quantities to one another.","Classical mechanics is the branch of physics that describes the motion of microscopic objects using concepts such as energy, momentum, and wave-particle duality. It is based on a four-dimensional space-time continuum and utilises many equations and mathematical concepts to relate physical quantities to one another.",Classical mechanics is the branch of physics that studies the behaviour of subatomic particles such as electrons and protons. It is based on the principles of quantum mechanics and utilises many equations and mathematical concepts to describe the properties of these particles.,Classical mechanics is the branch of physics that studies the behaviour of light and electromagnetic radiation. It is based on the principles of wave-particle duality and utilises many equations and mathematical concepts to describe the properties of light.,Classical mechanics is the branch of physics that studies the behaviour of fluids and gases. It is based on the principles of thermodynamics and utilises many equations and mathematical concepts to describe the properties of these substances.,A,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,pick the best possible answer: what is classical mechanics? from the following choices.,3832531433
+892,Identify the correct statement: What is the Ozma Problem? from the following choices.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem.  Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution.  Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms.",0.5714285714285714,local,identify the correct statement: what is the ozma problem? from the following choices.,80767234
+893,Identify the correct statement: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680+) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680+ ultimately comes from the oxidation of water into O2 and H+ through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700+ of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700+ can vary.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.42857142857142855,local,identify the correct statement: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,3737323487
+894,Determine the correct option: What are the four qualitative levels of crystallinity described by geologists? based on the given context.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.0,live_api,determine the correct option: what are the four qualitative levels of crystallinity described by geologists? based on the given context.,3151521599
+895,Identify the correct statement: What does Earnshaw's theorem state? from the following choices.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,No match found.,0.0,live_api,identify the correct statement: what does earnshaw's theorem state? from the following choices.,309606510
+896,Which of the following is correct? What is spatial dispersion? based on the given context.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in mechanisms, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in frameworks, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in frameworks, commonly seen in optics and electronics.",D,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+1884 to 1940 
+The hypothesis of dark matter has an elaborate history.
+Lord Kelvin discussed the potential number of stars around the Sun in the appendices of a book based on a series of lectures given in 1884 in Baltimore. He inferred their density using the observed velocity dispersion of the stars near the Sun, assuming that the Sun was 20–100 million years old. He posed what would happen if there were a thousand million stars within 1 kiloparsec of the Sun (at which distance their parallax would be 1 milli-arcsecond). Kelvin concluded:
+""Many of our supposed thousand million stars — perhaps a great majority of them — may be dark bodies.""
+
+The central tendency of a distribution is typically contrasted with its dispersion or variability; dispersion and central tendency are the often characterized properties of distributions. Analysis may judge whether data has a strong or a weak central tendency based on its dispersion.",0.625,local,which of the following is correct? what is spatial dispersion? based on the given context.,2999067492
+897,Which of the following is correct? What are the Navier-Stokes equations?,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.6666666666666666,local,which of the following is correct? what are the navier-stokes equations?,3331473590
+898,Identify the correct statement: What is the distinction between active and passive transport in cells? among the listed options.,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"Real options valuation, also often termed real options analysis, (ROV or ROA) applies option valuation techniques to capital budgeting decisions. A real option itself, is the right—but not the obligation—to undertake certain business initiatives, such as deferring, abandoning, expanding, staging, or contracting a capital investment project. For example, real options valuation could examine the opportunity to invest in the expansion of a firm's factory and the alternative option to sell the factory.
+Real options are most valuable when uncertainty is high; management has significant flexibility to change the course of the project in a favorable direction and is willing to exercise the options.",0.08333333333333333,live_api,identify the correct statement: what is the distinction between active and passive transport in cells? among the listed options.,2994217804
+899,"Select the most accurate option: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? carefully.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)",0.4117647058823529,local,"select the most accurate option: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? carefully.",3275914277
+900,Select the most accurate option: What are the two main factors that cause resistance in a metal? from the following choices.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"The German resistance to Nazism (German: Widerstand gegen den Nationalsozialismus) included both unarmed and armed opposition and disobedience to the Nazi regime by various movements, groups and individuals by various means, from attempts to assassinate Adolf Hitler or attempts to overthrow his regime, defections to the Allies and acts of sabotage against the German Army and the apparatus of repression and attempts to organize an armed struggle or open protests, the rescue of persecuted persons, the harboring of dissidence and acts of ""everyday resistance"".
+
+It was not a united resistance movement, unlike the more organised efforts in other countries, such as Italy, Denmark, the Soviet Union, Poland, Greece, Yugoslavia, France, the Netherlands, Czechoslovakia, and Norway. It consisted of small, isolated groups that were unable to mobilise mass opposition, which severely limited their operations. It had no unified leadership or common agenda because its members had a wide spectrum of ba",0.15384615384615385,live_api,select the most accurate option: what are the two main factors that cause resistance in a metal? from the following choices.,538877008
+901,Pick the best possible answer: What is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.",0.2857142857142857,local,pick the best possible answer: what is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,3686520877
+902,Pick the best possible answer: What is the Einstein@Home project?,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .
+
+21st century 
+Since 2000, the Einstein Papers Project has been located at Caltech. The project was established in 1986 to assemble, preserve, translate, and publish papers selected from the literary estate of Albert Einstein and from other collections.
+
+A reprint of this book was published by Edition Erbrich in 1982, .
+  Further information about the volumes published so far can be found on the webpages of the Einstein Papers Project and on the Princeton University Press Einstein Page.",0.42857142857142855,local,pick the best possible answer: what is the einstein@home project?,3056104909
+903,Pick the best possible answer: What is the interstellar medium (ISM)? carefully.,"The matter and radiation that exist in the space between the star frameworks in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar framework, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.",0.375,local,pick the best possible answer: what is the interstellar medium (ism)? carefully.,3357690313
+904,Identify the correct statement: What are the Navier-Stokes equations? based on the given context.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.3333333333333333,local,identify the correct statement: what are the navier-stokes equations? based on the given context.,3661496403
+905,What is the application of Memristor?,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control systems, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"Consider the spherical bubble attached to a cylindrical tube, where one wants the flow rate of air as a function of the pressure difference in the two parts. What are the Huntley extended dimensions of the viscosity of the air contained in the connected parts? What are the extended dimensions of the pressure of the two parts? Are they the same or different? These difficulties are responsible for the limited application of Huntley's directed length dimensions to real problems.
+
+How many factors does the design have, and are the levels of these factors fixed or random?
+ Are control conditions needed, and what should they be?
+ Manipulation checks: did the manipulation really work?
+ What are the background variables?
+ What is the sample size? How many units must be collected for the experiment to be generalisable and have enough power?
+ What is the relevance of interactions between factors?
+ What is the influence of delayed effects of substantive factors on outcomes?
+ How do response shifts affect self-report measures?
+ How feasible is repeated administration of the same measurement instruments to the same units at different occasions, with a post-test and follow-up tests?
+ What about using a proxy pretest?
+ Are there confounding variables?
+ Should the client/patient, researcher or even the analyst of the data be blind to conditions?
+ What is the feasibility of subsequent application of different conditions to the same units?
+ How many of each control and noise factors should be taken into account?
+
+Information technology (IT) is the application of computers and telecommunications equipment to store, retrieve, transmit, and manipulate data,  often in the context of a business or other enterprise. The term is commonly used as a synonym for computers and computer networks, but also encompasses other information distribution technologies such as television and telephones. Several industries are associated with information technology, including computer hardware, software, electronics, semiconductors, internet, telecom equipment, e-commerce, and computer services. On the later more broad application of the term IT, Keary comments- ""In its original application 'information technology' was appropriate to describe the convergence of technologies with application in the broad field of data storage, retrieval, processing, and dissemination. This useful conceptual term has since been converted to what purports to be concrete use, but without the reinforcement of definition...the term IT lacks substance when applied to the name of any function, discipline, or position."" .",0.5,local,what is the application of memristor?,604430460
+906,Identify the correct statement: What is a crossover experiment? based on the given context.,An experiment that involves crossing over two different types of materials to create a new material.,"A type of experiment used to distinguish between different mechanisms proposed for a chemical reaction, such as intermolecular vs. intramolecular mechanisms.",An experiment that involves crossing over two different types of organisms to create a hybrid.,An experiment that involves crossing over two different types of cells to create a new cell.,An experiment that involves crossing over two different chemicals to create a new substance.,B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is a crossover experiment? based on the given context.,100979233
+907,Pick the best possible answer: What is a phageome? based on the given context.,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.5,local,pick the best possible answer: what is a phageome? based on the given context.,4148093697
+908,"Identify the correct statement: What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope?","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.
+
+On larger scales, large galaxy redshift surveys may be used to make a three-dimensional map of the galaxy distribution. These maps are slightly distorted because distances are estimated from observed redshifts; the redshift contains a contribution from the galaxy's so-called peculiar velocity in addition to the dominant Hubble expansion term. On average, superclusters are expanding more slowly than the cosmic mean due to their gravity, while voids are expanding faster than average. In a redshift map, galaxies in front of a supercluster have excess radial velocities towards it and have redshifts slightly higher than their distance would imply, while galaxies behind the supercluster have redshifts slightly low for their distance. This effect causes superclusters to appear squashed in the radial direction, and likewise voids are stretched. Their angular positions are unaffected. This effect is not detectable for any one structure since the true shape is not known, but can be measured by averaging over many structures. It was predicted quantitatively by Nick Kaiser in 1987, and first decisively measured in 2001 by the 2dF Galaxy Redshift Survey. Results are in agreement with the Lambda-CDM model.
+
+Baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe on large scales. These are predicted to arise in the Lambda-CDM model due to acoustic oscillations in the photon–baryon fluid of the early universe and can be observed in the cosmic microwave background angular power spectrum. BAOs set up a preferred length scale for baryons. As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1%) preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130–160 Mpc. This feature was predicted theoretically in the 1990s and then discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations with BAO measurements from galaxy redshift surveys provides a precise estimate of the Hubble constant and the average matter density in the Universe. The results support the Lambda-CDM model.",0.6,local,"identify the correct statement: what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope?",900487646
+909,Determine the correct option: What did Newton's manuscripts of the 1660s show? based on the given context.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,"African-American history started with the forced transportation of Sub-Saharan Africans to North America in the 16th and 17th centuries. The European colonization of the Americas, and the resulting Atlantic slave trade, encompassed a large-scale transportation of enslaved Africans across the Atlantic. Of the roughly 10–12 million Africans who were sold in the Atlantic slave trade, either to Europe or the Americas, approximately 388,000 were sent to North America. After arriving in various European colonies in North America, the enslaved Africans were sold to European colonists, primarily to work on cash crop plantations. A group of enslaved Africans arrived in the English Virginia Colony in 1619, marking the beginning of slavery in the colonial history of the United States; by 1776, roughly 20% of the British North American population was of Sub-Saharan African descent, both free and enslaved.
+During the American Revolutionary War, in which the Thirteen Colonies gained independence and",0.0,live_api,determine the correct option: what did newton's manuscripts of the 1660s show? based on the given context.,2327369189
+910,"Identify the correct statement: What is a ""coffee ring"" in physics?",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+The coffee ceremony is the traditional serving of coffee, usually after a big meal. It often involves the use of a jebena (ጀበና), a clay coffee pot in which the coffee is boiled. The preparer roasts the coffee beans in front of guests, then walks around wafting the smoke throughout the room so participants may sample the scent of coffee. Then the preparer grinds the coffee beans in a traditional tool called a . The coffee is put into the jebena, boiled with water, and then served in small cups called si'ni. Coffee is usually served with sugar, but is also served with salt in many parts of Ethiopia. In some parts of the country, niter kibbeh is added instead of sugar or salt.",0.6666666666666666,local,"identify the correct statement: what is a ""coffee ring"" in physics?",2217454805
+911,Identify the correct statement: What is a trophic level in an ecological pyramid? among the listed options.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecoframework.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecostructure.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.",0.5,local,identify the correct statement: what is a trophic level in an ecological pyramid? among the listed options.,1580873365
+912,"What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion?","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)
+
+By Newton's second law, the cause of acceleration is a net force acting on the object, which is proportional to its mass m and its acceleration. The force, usually referred to as a centripetal force, has a magnitude",0.5833333333333334,local,"what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion?",1826866826
+913,Determine the correct option: What are the four qualitative levels of crystallinity described by geologists? among the listed options.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.0,live_api,determine the correct option: what are the four qualitative levels of crystallinity described by geologists? among the listed options.,2513427234
+914,Select the most accurate option: What is the function of mammary glands in mammals?,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.625,local,select the most accurate option: what is the function of mammary glands in mammals?,2672927627
+915,Choose the correct answer: What is the main sequence in astronomy? among the listed options.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar framework.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"The cutaway does not necessarily contribute any dramatic content of its own, but is used to help the editor assemble a longer sequence. For that reason, editors choose cutaways related to the main action, such as another action or object in the same location.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.5555555555555556,local,choose the correct answer: what is the main sequence in astronomy? among the listed options.,3340838752
+916,"Identify the correct statement: What is a transient condensation cloud, also known as a Wilson cloud?","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Around the beginning of the twentieth century, it was found that under certain conditions a fast-moving charged particle caused a condensation of supersaturated water vapor along its path. In 1911, Charles Wilson used this principle to devise his cloud chamber so he could photograph the tracks of charged particles, such as fast-moving electrons.
+
+The Oort cloud is thought to occupy a vast space starting from between  to as far as  from the Sun. This cloud encases the celestial bodies that start at the middle of the Solar System—the Sun, all the way to outer limits of the Kuiper Belt. The Oort cloud consists of viable materials necessary for the creation of celestial bodies. The Solar System's planets exist only because of the planetesimals (chunks of leftover space that assisted in the creation of planets) that were condensed and formed by the gravity of the Sun. The eccentric made from these trapped planetesimals is why the Oort Cloud even exists. Some estimates place the outer edge at between . The region can be subdivided into a spherical outer Oort cloud of , and a doughnut-shaped inner cloud, the Hills cloud, of . The outer cloud is only weakly bound to the Sun and supplies the long-period (and possibly Halley-type) comets that fall to inside the orbit of Neptune. The inner Oort cloud is also known as the Hills cloud, named after Jack G. Hills, who proposed its existence in 1981. Models predict that the inner cloud should have tens or hundreds of times as many cometary nuclei as the outer halo; it is seen as a possible source of new comets that resupply the relatively tenuous outer cloud as the latter's numbers are gradually depleted. The Hills cloud explains the continued existence of the Oort cloud after billions of years.
+
+Private clouds, for example, are used in cloud security to mitigate the increased attack surface area of outsourcing data storage. A private cloud is cloud infrastructure operated solely for a single organization, whether managed internally or by a third party, or hosted internally or externally.
+ Hybrid cloud storage are another cloud security solution, involving storage infrastructure that uses a combination of on-premises storage resources with cloud storage. The on-premises storage is usually managed by the organization, while the public cloud storage provider is responsible for the management and security of the data stored in the cloud. Using a hybrid model allows data to be ingested in an encrypted format where the key is held within the on-premise infrastructure and can limit access to the use of on-premise cloud storage gateways, which may have options to encrypt the data prior to transfer.
+ Cloud services are considered ""public"" when they are delivered over the public Internet.
+ A virtual private cloud (VPC) is a pool of shared resources within a public cloud that provides a certain level of isolation between the different users using the resources. VPCs achieve user isolation through the allocation of a private IP subnet and a virtual communication construct (such as a VLAN or a set of encrypted communication channels) between users as well as the use of a virtual private network (VPN) per VPC user, securing, by means of authentication and encryption, the remote access of the organization to its VPC resources.",0.5555555555555556,local,"identify the correct statement: what is a transient condensation cloud, also known as a wilson cloud?",478516996
+917,Select the most accurate option: What is the gravitomagnetic interaction? carefully.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general framework of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"The system came with two Intellivision-style controllers with a 12-button keypad and ""fire"" buttons on the sides. The direction pads have a removable joystick attachment. Most games came with BoPET overlays that can be applied to the controller's keypads. The console itself has five buttons: Power, Start, Reset, Option, and Select.
+
+Legal scholar Jim Drennan, an expert on the court system at the Institute of Government at the University of North Carolina at Chapel Hill, told the Winston-Salem Journal in a 2007 interview that the ability to use this form of guilty plea as an option in courts had a far-reaching effect throughout the United States: ""We have lots of laws, but human interaction creates unique circumstances and the law has to adapt."" He added that the Supreme Court ""had to make a decision about what to do. One of the things the court has to do is figure out how to answer new questions, and that is what happened in this case.""
+
+If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).",0.5714285714285714,local,select the most accurate option: what is the gravitomagnetic interaction? carefully.,3557900058
+918,Select the most accurate option: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? from the following choices.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's framework of general relativity.",C,No match found.,0.0,live_api,select the most accurate option: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? from the following choices.,3519596612
+919,Identify the correct statement: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants?,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+Membranes
+Cholesterol is present in varying degrees in all animal cell membranes but is absent in prokaryotes. It is required to build and maintain membranes and modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group of each cholesterol molecule interacts with water molecules surrounding the membrane, as do the polar heads of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty-acid chain of the other lipids. Through the interaction with the phospholipid fatty-acid chains, cholesterol increases membrane packing, which both alters membrane fluidity and maintains membrane integrity so that animal cells do not need to build cell walls (like plants and most bacteria). The membrane remains stable and durable without being rigid, allowing animal cells to change shape and animals to move.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.4166666666666667,local,identify the correct statement: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants?,4238074322
+920,Determine the correct option: What is accelerator-based light-ion fusion? from the following choices.,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This procedure is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This approach is relatively difficult to implement and requires a complex framework of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This approach is relatively difficult to implement and requires a complex mechanism of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,determine the correct option: what is accelerator-based light-ion fusion? from the following choices.,1333885792
+921,Choose the correct answer: What is the second law of thermodynamics? based on the given context.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated frameworks left to spontaneous evolution can reduce, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic framework and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"For the foundations of thermodynamics, the conceptual importance of this was emphasized by Bryan, by Carathéodory, and by Born. The reason is that calorimetry presupposes a type of temperature as already defined before the statement of the first law of thermodynamics, such as one based on empirical scales. Such a presupposition involves making the distinction between empirical temperature and absolute temperature. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis.
+
+The structure of chemical thermodynamics is based on the first two laws of thermodynamics.  Starting from the first and second laws of thermodynamics, four equations called the ""fundamental equations of Gibbs"" can be derived.  From these four, a multitude of equations, relating the thermodynamic properties of the thermodynamic system can be derived using relatively simple mathematics.  This outlines the mathematical framework of chemical thermodynamics.
+
+It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.",0.4444444444444444,local,choose the correct answer: what is the second law of thermodynamics? based on the given context.,395060451
+922,Select the most accurate option: What is Martin Heidegger's view on the relationship between time and human existence? carefully.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Augustine of Hippo ( aw-GUST-in, US also  AW-gə-steen; Latin: Aurelius Augustinus Hipponensis; 13 November 354 – 28 August 430) was a Christian theologian and philosopher from Thagaste, Numidia Cirtensis and the Bishop of Hippo Regius. He is generally regarded as one of the most influential philosophers in the history of the Western world, and he is viewed as one of the most important Church Fathers of the Latin Church in the Patristic Period.
+In his youth he was drawn to the Manichaean faith, and later to the Hellenistic philosophy of Neoplatonism. After his conversion to Christianity and baptism in 386 by Saint Ambrose, Augustine developed his own approach to philosophy and theology, making significant contributions in a wide variety of areas. He is known as Doctor Gratiae (""Doctor of Grace"") for the vast influence of his views on the necessity of unmerited, prevenient grace, for salvation and the nature of original sin.
+Additionally, he made important contributions in ecclesiology,",0.07142857142857142,live_api,select the most accurate option: what is martin heidegger's view on the relationship between time and human existence? carefully.,2009896257
+923,Which of the following is correct? What did Newton adopt after his correspondence with Hooke in 1679-1680? carefully.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,"Sir Isaac Newton ( ; (1643-01-04)4 January 1643 [O.S. 25 December 1642] – 31 March [O.S. 20 March] 1727) was an English polymath who was a mathematician, physicist, astronomer, alchemist, theologian, author and inventor. He was a key figure in the Scientific Revolution and the Enlightenment that followed. His book Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687, achieved the first great unification in physics and established classical mechanics. Newton also made seminal contributions to optics, and shares credit with the German mathematician Gottfried Wilhelm Leibniz for formulating infinitesimal calculus, although he developed calculus years before Leibniz. Newton contributed to and refined the scientific method, and his work is considered the most influential in bringing forth modern science.
+In the Principia, Newton formulated the laws of motion and universal gravitation that formed the dominant scientific viewpoin",0.15384615384615385,live_api,which of the following is correct? what did newton adopt after his correspondence with hooke in 1679-1680? carefully.,4004151170
+924,Determine the correct option: What is the definition of anatomy? based on the given context.,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In legal systems based on legal moralism, the predominant moral beliefs of society determine the legal definition as well as the social definition of crime. This system is less prominent in liberal democratic societies that prioritize individualism and multiculturalism over other moral beliefs.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.75,local,determine the correct option: what is the definition of anatomy? based on the given context.,3158785839
+925,Determine the correct option: What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation? among the listed options.,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.",0.35714285714285715,local,determine the correct option: what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation? among the listed options.,108578289
+926,Determine the correct option: What is the definition of dimension in mathematics? carefully.,"The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of degrees of freedom of a point that moves on this object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.",C,"In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+A tesseract is an example of a four-dimensional object. Whereas outside mathematics the use of the term ""dimension"" is as in: ""A tesseract has four dimensions"", mathematicians usually express this as: ""The tesseract has dimension 4"", or: ""The dimension of the tesseract is 4"".
+
+The dimension of Euclidean -space is . When trying to generalize to other types of spaces, one is faced with the question ""what makes  -dimensional?"" One answer is that to cover a fixed ball in  by small balls of radius , one needs on the order of  such small balls. This observation leads to the definition of the Minkowski dimension and its more sophisticated variant, the Hausdorff dimension, but there are also other answers to that question. For example, the boundary of a ball in  looks locally like  and this leads to the notion of the inductive dimension. While these notions agree on , they turn out to be different when one looks at more general spaces.",0.42857142857142855,local,determine the correct option: what is the definition of dimension in mathematics? carefully.,1031919166
+927,What is the Einstein@Home project?,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"21st century 
+Since 2000, the Einstein Papers Project has been located at Caltech. The project was established in 1986 to assemble, preserve, translate, and publish papers selected from the literary estate of Albert Einstein and from other collections.
+
+A reprint of this book was published by Edition Erbrich in 1982, .
+  Further information about the volumes published so far can be found on the webpages of the Einstein Papers Project and on the Princeton University Press Einstein Page.
+
+Home page of Albert Einstein at The Institute for Advanced Study
+ Einstein and his love of music (archived 2015), Physics World, Jan 2005
+  including the Nobel Lecture 11 July 1923 Fundamental ideas and problems of the theory of relativity
+ Einstein's declaration of intention for American citizenship (archived 2014) on the World Digital Library",1.0,local,what is the einstein@home project?,619819606
+928,Pick the best possible answer: What is the definition of an improper rotation?,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"Isaac Newton's rotating bucket argument (also known as Newton's bucket) is a thought experiment that was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.  It is one of five arguments from the ""properties, causes, and effects"" of ""true motion and rest"" that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by ""absolute rotation"", and do not pretend to address the question of ""rotation relative to what?"" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime.
+
+For a rigid body, for instance a wheel or an asteroid, the orientation of rotation is simply the position of the rotation axis versus the matter of the body. It may or may not pass through the center of mass, or it may lie completely outside of the body. For the same body, angular momentum may take a different value for every possible axis about which rotation may take place. It reaches a minimum when the axis passes through the center of mass.
+
+Draper argued that any definition of euthanasia must incorporate four elements: an agent and a subject; an intention; causal proximity, such that the actions of the agent lead to the outcome; and an outcome. Based on this, she offered a definition incorporating those elements, stating that euthanasia ""must be defined as death that results from the intention of one person to kill another person, using the most gentle and painless means possible, that is motivated solely by the best interests of the person who dies."" Prior to Draper, Beauchamp and Davidson had also offered a definition that included these elements. Their definition specifically discounts fetuses to distinguish between abortions and euthanasia:",0.5714285714285714,local,pick the best possible answer: what is the definition of an improper rotation?,2164108082
+929,Choose the correct answer: What is the relationship between the Wigner function and the density matrix operator? based on the given context.,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.",0.6923076923076923,local,choose the correct answer: what is the relationship between the wigner function and the density matrix operator? based on the given context.,2778588253
+930,What is explicit symmetry breaking in theoretical physics?,"Explicit symmetry breaking is the breaking of a symmetry of a theory by terms in its defining equations of motion that do not respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the theory.","Explicit symmetry breaking is the breaking of a symmetry of a theory by terms in its defining equations of motion that do not respect the symmetry, usually in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the theory.","Explicit symmetry breaking is the breaking of a symmetry of a theory by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the theory.","Explicit symmetry breaking is the breaking of a symmetry of a theory by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the theory.","Explicit symmetry breaking is the breaking of a symmetry of a theory by terms in its defining equations of motion that respect the symmetry, usually in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the theory.",B,"After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).
+
+Eugene Paul Wigner (, ; November 17, 1902 – January 1, 1995) was a Hungarian-American theoretical physicist who also contributed to mathematical physics. He received the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"".
+
+Some states of matter exhibit symmetry breaking, where the relevant laws of physics possess some form of symmetry that is broken. A common example is crystalline solids, which break continuous translational symmetry. Other examples include magnetized ferromagnets, which break rotational symmetry, and more exotic states such as the ground state of a BCS superconductor, that breaks U(1) phase rotational symmetry.",0.8,local,what is explicit symmetry breaking in theoretical physics?,952464511
+931,Identify the correct statement: What is the Ramsauer-Townsend effect?,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a non-noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a noble gas. It requires the wave principle of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a non-noble gas. It requires the wave framework of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of electrons by atoms of any gas. It can be explained by classical mechanics.,B,No match found.,0.0,live_api,identify the correct statement: what is the ramsauer-townsend effect?,3635771120
+932,Pick the best possible answer: What is accelerator-based light-ion fusion? from the following choices.,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This approach is relatively difficult to implement and requires a complex structure of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This procedure is relatively difficult to implement and requires a complex structure of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This procedure is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,pick the best possible answer: what is accelerator-based light-ion fusion? from the following choices.,107254205
+933,Determine the correct option: What is the SI base unit of time and how is it defined?,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.",0.625,local,determine the correct option: what is the si base unit of time and how is it defined?,3027809357
+934,Which of the following is correct? What is the De Haas-Van Alphen effect? among the listed options.,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.
+
+A complete original version of the Einstein-de Haas experimental equipment was donated by Geertruida de Haas-Lorentz, wife of de Haas and daughter of Lorentz, to the Ampère Museum in Lyon France in 1961 where it is currently on display. It was lost among the museum's holdings and was rediscovered in 2023.
+
+In 1908, Owen Willans Richardson predicted that a change in the magnetic moment of a free body will cause this body to rotate. This effect is a consequence of the conservation of angular momentum and is strong enough to be observable in ferromagnetic materials. Einstein and Wander Johannes de Haas published two papers in 1915 claiming the first experimental observation of the effect. Measurements of this kind demonstrate that the phenomenon of magnetization is caused by the alignment (polarization) of the angular momenta of the electrons in the material along the axis of magnetization. These measurements also allow the separation of the two contributions to the magnetization: that which is associated with the spin and with the orbital motion of the electrons. The Einstein-de Haas experiment is the only experiment conceived, realized and published by Albert Einstein himself.",0.6363636363636364,local,which of the following is correct? what is the de haas-van alphen effect? among the listed options.,2203705181
+935,What is the significance of the redshift-distance relationship in determining the expansion history of the universe?,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+Measurements of the redshift–magnitude relation for type Ia supernovae indicate that the expansion of the universe has been accelerating since the universe was about half its present age. To explain this acceleration, cosmological models require that much of the energy in the universe consists of a component with large negative pressure, dubbed ""dark energy"".
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.",0.625,local,what is the significance of the redshift-distance relationship in determining the expansion history of the universe?,3796845856
+936,Select the most accurate option: What is the second law of thermodynamics?,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated mechanisms left to spontaneous evolution can lower, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic structure and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.
+
+External links 
+ Chemical Thermodynamics - University of North Carolina
+ Chemical energetics (Introduction to thermodynamics and the First Law)
+ Thermodynamics of chemical equilibrium (Entropy, Second Law and free energy)
+
+It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.",0.5714285714285714,local,select the most accurate option: what is the second law of thermodynamics?,4230785835
+937,Pick the best possible answer: What is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.38461538461538464,local,pick the best possible answer: what is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,2776061592
+938,"Which of the following is correct? What are amorphous ferromagnetic metallic alloys, and what are their advantages? carefully.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,"Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen is most often an ultrathin section less than 100 nm thick or a suspension on a grid. An image is formed from the interaction of the electrons with the sample as the beam is transmitted through the specimen. The image is then magnified and focused onto an imaging device, such as a fluorescent screen, a layer of photographic film, or a detector such as a scintillator attached to a charge-coupled device or a direct electron detector.
+Transmission electron microscopes are capable of imaging at a significantly higher resolution than light microscopes, owing to the smaller de Broglie wavelength of electrons. This enables the instrument to capture fine detail—even as small as a single column of atoms, which is thousands of times smaller than a resolvable object seen in a light microscope. Transmission electron microscopy is a major anal",0.1,live_api,"which of the following is correct? what are amorphous ferromagnetic metallic alloys, and what are their advantages? carefully.",812391607
+939,What is the gravitomagnetic interaction?,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general theory of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Sociologists representing symbolic interactionism argue that social rules are created through the interaction between the members of a society. The focus on active interaction highlights the fluid, shifting character of social rules. These are specific to the social context, a context that varies through time and place. That means a social rule changes over time within the same society. What was acceptable in the past may no longer be the case. Similarly, rules differ across space: what is acceptable in one society may not be so in another.
+
+If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+Reflective
+A reflective essay is an analytical piece of writing in which the writer describes a real or imaginary scene, event, interaction, passing thought, memory, or form—adding a personal reflection on the meaning of the topic in the author's life. Thus, the focus is not merely descriptive. The writer doesn't just describe the situation,  but revisits the scene with more detail and emotion to examine what went well, or reveal a need for additional learning—and may relate what transpired to the rest of the author's life.",0.5,local,what is the gravitomagnetic interaction?,1228371219
+940,Choose the correct answer: What is reciprocal length or inverse length? among the listed options.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.4,local,choose the correct answer: what is reciprocal length or inverse length? among the listed options.,297386459
+941,Determine the correct option: What is indirect photophoresis? carefully.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,determine the correct option: what is indirect photophoresis? carefully.,2764696683
+942,Choose the correct answer: What is the significance of probability amplitudes in quantum mechanics? from the following choices.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).",0.5,local,choose the correct answer: what is the significance of probability amplitudes in quantum mechanics? from the following choices.,3198367220
+943,Select the most accurate option: What is the Landau-Lifshitz-Gilbert equation used for in physics? among the listed options.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,This glossary of engineering terms is a list of definitions about the major concepts of engineering. Please see the bottom of the page for glossaries of specific fields of engineering.,0.0,live_api,select the most accurate option: what is the landau-lifshitz-gilbert equation used for in physics? among the listed options.,2426324815
+944,Pick the best possible answer: What is X-ray pulsar-based navigation (XNAV)? among the listed options.,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,pick the best possible answer: what is x-ray pulsar-based navigation (xnav)? among the listed options.,1268730375
+945,Choose the correct answer: What are the four qualitative levels of crystallinity described by geologists?,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,No match found.,0.0,live_api,choose the correct answer: what are the four qualitative levels of crystallinity described by geologists?,2911039918
+946,What is the relationship between interstellar and cometary chemistry?,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,"The events of SL9's interaction with Jupiter greatly highlighted Jupiter's role in protecting the inner planets from both interstellar and in-system debris by acting as a ""cosmic vacuum cleaner"" for the Solar System (Jupiter barrier). The planet's strong gravitational influence attracts many small comets and asteroids and the rate of cometary impacts on Jupiter is thought to be between 2,000 and 8,000 times higher than the rate on Earth.
+
+Interstellar destruction mechanisms 
+There are 113 total proposed reactions leading to the destruction of . Of these, 39 were tabulated in extensive tables of the chemistry among C, N and O compounds. A review of interstellar ammonia cites the following reactions as the principal dissociation mechanisms:
+
+Deuterium was also detected in many other hydrogen compounds in the comet. The ratio of deuterium to normal hydrogen was found to vary from compound to compound, which astronomers believe suggests that cometary ices were formed in interstellar clouds, rather than in the solar nebula. Theoretical modelling of ice formation in interstellar clouds suggests that comet Hale–Bopp formed at temperatures of around 25–45 kelvin. ( –414 to –387 Fahrenheit / –248 to –233 Celsius).",0.8,local,what is the relationship between interstellar and cometary chemistry?,3669279914
+947,Select the most accurate option: What is the function of the fibrous cardiac skeleton? among the listed options.,The fibrous cardiac skeleton is a structure of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+An echocardiogram can, within certain limits, produce an accurate assessment of the direction of blood flow and the velocity of blood and cardiac tissue at any arbitrary point using the Doppler effect. One of the limitations is that the ultrasound beam should be as parallel to the blood flow as possible. Velocity measurements allow assessment of cardiac valve areas and function, abnormal communications between the left and right side of the heart, leaking of blood through the valves (valvular regurgitation), and calculation of the cardiac output. Contrast-enhanced ultrasound using gas-filled microbubble contrast media can be used to improve velocity or other flow-related medical measurements.",0.6363636363636364,local,select the most accurate option: what is the function of the fibrous cardiac skeleton? among the listed options.,536682888
+948,Determine the correct option: What is the Landau-Lifshitz-Gilbert equation used for in physics?,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,No match found.,0.0,live_api,determine the correct option: what is the landau-lifshitz-gilbert equation used for in physics?,2508786663
+949,Select the most accurate option: What is the role of methane in Fischer-Tropsch processes? from the following choices.,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,No match found.,0.0,live_api,select the most accurate option: what is the role of methane in fischer-tropsch processes? from the following choices.,1620828840
+950,"Determine the correct option: What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope?","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.
+
+On larger scales, large galaxy redshift surveys may be used to make a three-dimensional map of the galaxy distribution. These maps are slightly distorted because distances are estimated from observed redshifts; the redshift contains a contribution from the galaxy's so-called peculiar velocity in addition to the dominant Hubble expansion term. On average, superclusters are expanding more slowly than the cosmic mean due to their gravity, while voids are expanding faster than average. In a redshift map, galaxies in front of a supercluster have excess radial velocities towards it and have redshifts slightly higher than their distance would imply, while galaxies behind the supercluster have redshifts slightly low for their distance. This effect causes superclusters to appear squashed in the radial direction, and likewise voids are stretched. Their angular positions are unaffected. This effect is not detectable for any one structure since the true shape is not known, but can be measured by averaging over many structures. It was predicted quantitatively by Nick Kaiser in 1987, and first decisively measured in 2001 by the 2dF Galaxy Redshift Survey. Results are in agreement with the Lambda-CDM model.
+
+Baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe on large scales. These are predicted to arise in the Lambda-CDM model due to acoustic oscillations in the photon–baryon fluid of the early universe and can be observed in the cosmic microwave background angular power spectrum. BAOs set up a preferred length scale for baryons. As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1%) preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130–160 Mpc. This feature was predicted theoretically in the 1990s and then discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations with BAO measurements from galaxy redshift surveys provides a precise estimate of the Hubble constant and the average matter density in the Universe. The results support the Lambda-CDM model.",0.6,local,"determine the correct option: what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope?",3115340965
+951,Choose the correct answer: What is the origin of the radio emission observed from supernova remnants? carefully.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,The following scientific events occurred in 2023.,0.0,live_api,choose the correct answer: what is the origin of the radio emission observed from supernova remnants? carefully.,391988878
+952,Pick the best possible answer: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory?,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,pick the best possible answer: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory?,2884707433
+953,"Pick the best possible answer: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? among the listed options.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is operated by five partner space agencies: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada). It is the first space station built, maintained and crewed through international cooperation and the largest human spacecraft ever constructed. It is an orbital research station, where scientific experiments in microgravity are conducted and the space environment is studied. Since 2 November 2000, it has hosted the longest continuous presence of humans in space. Alongside Tiangong, it is one of the only two currently operational space stations.
+The station orbits between 51.64° north and south, at about 400 kilometres (250 miles) above Earth, below the Van Allen radiation belts and most space debris. Its orbit takes it at 7.67 km/s (27,600 km/h; 17,200 mph) roughly every 93 minutes around Earth, 15.5 times a da",0.09090909090909091,live_api,"pick the best possible answer: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? among the listed options.",344017901
+954,"Which of the following is correct? Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? among the listed options.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"which of the following is correct? which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? among the listed options.",4003332822
+955,Which of the following is correct? What is the role of methane in Fischer-Tropsch processes?,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,"With regard to synthetic fuels, an old but still important process is the Fischer–Tropsch synthesis of hydrocarbons from synthesis gas, which itself is processed via water-gas shift reactions, catalyzed by iron. The Sabatier reaction produces methane from carbon dioxide and hydrogen. Biodiesel and related biofuels require processing via both inorganic and biocatalysts.
+
+Methanol is produced by the hydrogenation of carbon monoxide. In a related reaction, the hydrogenation of carbon monoxide is coupled to C−C bond formation, as in the Fischer–Tropsch process where carbon monoxide is hydrogenated to liquid hydrocarbon fuels. This technology allows coal or biomass to be converted to diesel.
+
+Advent of industrial chemistry
+Carbon monoxide gained recognition as an essential reagent in the 1900s.  Three industrial processes illustrate its evolution in industry.  In the Fischer–Tropsch process, coal and related carbon-rich feedstocks are converted into liquid fuels via the intermediacy of CO.  Originally developed as part of the German war effort to compensate for their lack of domestic petroleum, this technology continues today.  Also in Germany, a mixture of CO and hydrogen was found to combine with olefins to give aldehydes.  This process, called hydroformylation, is used to produce many large scale chemicals such as surfactants as well as specialty compounds that are popular fragrances and drugs.  For example, CO is used in the production of vitamin A. In a third major process, attributed to researchers at Monsanto, CO combines with methanol to give acetic acid. Most acetic acid is produced by the Cativa process.  Hydroformylation and the acetic acid syntheses are two of myriad carbonylation processes.",0.625,local,which of the following is correct? what is the role of methane in fischer-tropsch processes?,2300732201
+956,Identify the correct statement: What is the effect generated by a spinning superconductor? carefully.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"Physics is the scientific study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. It is one of the most fundamental scientific disciplines. A scientist who specializes in the field of physics is called a physicist.
+Physics is one of the oldest academic disciplines. Over much of the past two millennia, physics, chemistry, biology, and certain branches of mathematics were part of natural philosophy, but during the Scientific Revolution in the 17th century, these natural sciences branched into separate research endeavors. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in these and other academic disciplines, such as mathematics and philosophy.
+Advances in physics often",0.0,live_api,identify the correct statement: what is the effect generated by a spinning superconductor? carefully.,1024545844
+957,Select the most accurate option: What is the formalism that angular momentum is associated with in rotational invariance?,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.
+
+Lagrangian formalism 
+In Lagrangian mechanics, angular momentum for rotation around a given axis, is the conjugate momentum of the generalized coordinate of the angle around the same axis. For example, , the angular momentum around the z axis, is:",0.6363636363636364,local,select the most accurate option: what is the formalism that angular momentum is associated with in rotational invariance?,3962537783
+958,"Choose the correct answer: What is the ""ultraviolet catastrophe""? from the following choices.",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven principle about the distribution of electromagnetic radiation.,B,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.2857142857142857,local,"choose the correct answer: what is the ""ultraviolet catastrophe""? from the following choices.",1063048609
+959,Which of the following is correct? What is the explanation for the effective supersymmetry in quark-diquark models? among the listed options.,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,"Constraints on supersymmetry 
+For decades, the leading candidate for dark matter was the lightest neutralino predicted by supersymmetry. However, extensive searches through the conclusion of the LHC's run 3 (2022–2025) operations have failed to detect the superpartners (such as squarks and gluinos) predicted by supersymmetry models. By late 2025, the ATLAS and CMS collaborations had pushed exclusion limits for gluinos beyond 2.4 TeV, and limits for charginos and neutralinos (""electroweak-inos"") beyond 1 TeV in many scenarios. This persistent absence has ruled out the most favored parameter space for WIMPs, forcing theorists to consider more complex and fine-tuned models such as ""split supersymmetry,"" or to abandon supersymmetry candidates entirely.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+Quarks carry a charge, so knowing the charge of a particle indirectly gives the quark content. For example, the rules above say that a  contains a c quark and some combination of two u and/or d quarks. The c quark has a charge of (Q = +), therefore the other two must be a u quark (Q = +), and a d quark (Q = −) to have the correct total charge (Q = +1).",0.5833333333333334,local,which of the following is correct? what is the explanation for the effective supersymmetry in quark-diquark models? among the listed options.,2373566415
+960,Determine the correct option: What is the distinction between probability mass function (PMF) and probability density function (PDF)? based on the given context.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability concept.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+Random variables with density
+Now consider a random variable  which has a probability density function given by a function  on the real number line. This means that the probability of  taking on any value in a given open interval is given by the integral of  over that interval. The expectation of  is then given by the integral
+
+The normal distribution with zero mean and unit standard deviation is known as the standard normal distribution, given by the probability density function",0.35714285714285715,local,determine the correct option: what is the distinction between probability mass function (pmf) and probability density function (pdf)? based on the given context.,2232395479
+961,Pick the best possible answer: What is the SI unit of the physical quantity m/Q? from the following choices.,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by
+
+The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).",0.75,local,pick the best possible answer: what is the si unit of the physical quantity m/q? from the following choices.,1537280597
+962,Pick the best possible answer: What is the main sequence in astronomy? based on the given context.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar mechanism.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+It is not possible in general to unambiguously define what is the minimal number of symbols required to describe a given string (given a specific description mechanism). In this context, the terms string and number may be used interchangeably, since a number is actually a string of symbols, e.g. an English word (like the word ""eleven"" used in the paradox) while, on the other hand, it is possible to refer to any word with a number, e.g. by the number of its position in a given dictionary or by suitable encoding. Some long strings can be described exactly using fewer symbols than those required by their full representation, as is often achieved using data compression. The complexity of a given string is then defined as the minimal length that a description requires in order to (unambiguously) refer to the full representation of that string.",0.4,local,pick the best possible answer: what is the main sequence in astronomy? based on the given context.,1141502455
+963,Choose the correct answer: What is the definition of anatomy? among the listed options.,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"where  is some set with cardinality . One can show that the generalized binomial coefficient is well-defined, in the sense that no matter what set we choose to represent the cardinal number ,  will remain the same. For finite cardinals, this definition coincides with the standard definition of the binomial coefficient.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.5,local,choose the correct answer: what is the definition of anatomy? among the listed options.,3334502479
+964,Which of the following is correct? What is Modified Newtonian Dynamics (MOND)?,MOND is a concept that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's framework of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a principle that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,"Although the astrophysics community generally accepts the existence of dark matter, a minority of astrophysicists, intrigued by specific observations that are not well explained by ordinary dark matter, argue for various modifications of the standard laws of general relativity. These include modified Newtonian dynamics (MOND), tensor–vector–scalar gravity, and entropic gravity. So far none of the proposed modified gravity theories can describe every piece of observational evidence at the same time, suggesting that even if gravity has to be modified, some form of dark matter will still be required.
+
+The CMB anisotropy was first discovered by COBE in 1992, though this had too coarse resolution to detect the acoustic peaks.
+After the discovery of the first acoustic peak by the balloon-borne BOOMERanG experiment in 2000, the power spectrum was precisely observed by WMAP in 2003–2012, and even more precisely by the Planck spacecraft in 2013–2015. The results support the Lambda-CDM model. The observed CMB angular power spectrum provides powerful evidence in support of dark matter, as its precise structure is well fitted by the Lambda-CDM model, but difficult to reproduce with any competing model such as modified Newtonian dynamics (MOND).
+
+The last major possibility is that general relativity, the theory underpinning modern cosmology, is incorrect. General relativity is well-tested on Solar System scales, but its validity on galactic or cosmological scales has not been well proven. A suitable modification to general relativity can conceivably eliminate the need for dark matter. The best-known theories of this class are modified Newtonian dynamics (MOND) and its relativistic generalization tensor–vector–scalar gravity (TeVeS),For a review, see:  f(R) gravity,For a review, see:  negative mass, dark fluid, entropic gravity, conformal gravity, and massive gravity. Alternative theories abound.",0.5714285714285714,local,which of the following is correct? what is modified newtonian dynamics (mond)?,842117645
+965,What is the Landau-Lifshitz-Gilbert equation used for in physics?,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,"Non-equilibrium fluid systems can be successfully modeled with Landau-Lifshitz fluctuating hydrodynamics. In this theoretical framework, diffusion is due to fluctuations whose dimensions range from the molecular scale to the macroscopic scale.
+
+The Landau–Stanyukovich–Zeldovich–Kompaneets equation of state (often abbreviated LSZK EOS) is a thermodynamic model used to describe the pressure–energy relationship of detonation products and high‑pressure reactive gases in computational hydrodynamics and explosive physics. It is named after prominent Soviet physicists Lev Landau & K. P. Stanyukovich (1945),[1] and Yakov Zeldovich & Alexander Kompaneyets (1960).[2] The LSZK EOS is primarily used to model detonation products rather than the unreacted solid explosive itself. It provides a smooth pressure–energy relationship suitable for numerical simulations of blast waves and shock propagation.
+
+Not every cavity configuration necessarily leads to a finite part (the lack of a pole at ) or shape-independent infinite parts. In this case, it should be understood that additional physics has to be taken into account. In particular, at extremely large frequencies (above the plasma frequency), metals become transparent to photons (such as X-rays), and dielectrics show a frequency-dependent cutoff as well. This frequency dependence acts as a natural regulator. There are a variety of bulk effects in solid state physics, mathematically very similar to the Casimir effect, where the cutoff frequency comes into explicit play to keep expressions finite. (These are discussed in greater detail in Landau and Lifshitz, ""Theory of Continuous Media"".)",0.8333333333333334,local,what is the landau-lifshitz-gilbert equation used for in physics?,1928345680
+966,Select the most accurate option: What did Newton adopt after his correspondence with Hooke in 1679-1680?,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,select the most accurate option: what did newton adopt after his correspondence with hooke in 1679-1680?,3368909480
+967,Determine the correct option: What is geometric quantization in mathematical physics? based on the given context.,Geometric quantization is a mathematical approach to defining a classical framework corresponding to a given quantum framework. It attempts to carry out quantization in such a way that certain analogies between the quantum framework and the classical framework are lost.,Geometric quantization is a mathematical approach to defining a quantum framework corresponding to a given classical framework. It attempts to carry out quantization in such a way that certain analogies between the classical framework and the quantum framework are lost.,Geometric quantization is a mathematical approach to defining a classical framework corresponding to a given quantum framework. It attempts to carry out quantization in such a way that certain analogies between the quantum framework and the classical framework remain manifest.,Geometric quantization is a mathematical approach to defining a quantum concept corresponding to a given classical concept. It attempts to carry out quantization in such a way that certain analogies between the classical concept and the quantum concept are not essential.,Geometric quantization is a mathematical approach to defining a quantum framework corresponding to a given classical framework. It attempts to carry out quantization in such a way that certain analogies between the classical framework and the quantum framework remain manifest.,E,"In mathematics, the Fourier transform (FT) is an integral transform that takes a function as input and outputs another function that describes the extent to which various frequencies are present in the original function. The output of the transform is a complex valued function of frequency. The term Fourier transform refers to both the mathematical operation and to this complex-valued function. When a distinction needs to be made, the output of the operation is sometimes called the frequency domain representation of the original function. The Fourier transform is analogous to decomposing the sound of a musical chord into the intensities of its constituent pitches.
+
+Functions that are localized in the time domain have Fourier transforms that are spread out across the frequency domain and vice versa, a phenomenon known as the uncertainty principle. The critical case for this principle is the Gaussian function, of substantial importance in probability theory and statistics as well as in t",0.1,live_api,determine the correct option: what is geometric quantization in mathematical physics? based on the given context.,1266050736
+968,What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation?,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+Ampère also provided a physical understanding of the electromagnetic relationship, theorizing the existence of an ""electrodynamic molecule"" (the forerunner of the idea of the electron) that served as the component element of both electricity and magnetism. Using this physical explanation of electromagnetic motion, Ampère developed a physical account of electromagnetic phenomena that was both empirically demonstrable and mathematically predictive. Almost 100 years later, in 1915, Albert Einstein together with Wander Johannes de Haas made the proof of the correctness of Ampère's hypothesis through the Einstein–de Haas effect. In 1826, Ampère published his magnum opus, Mémoire sur la théorie mathématique des phénomènes électrodynamiques uniquement déduite de l'experience (Memoir on the Mathematical Theory of Electrodynamic Phenomena, Uniquely Deduced from Experience), the work that coined the name of his new science, electrodynamics, and became known ever after as its founding treatise.
+
+A theory of electromagnetism, known as classical electromagnetism, was developed by several physicists during the period between 1820 and 1873, when James Clerk Maxwell's treatise was published, which unified previous developments into a single theory, proposing that light was an electromagnetic wave propagating in the luminiferous ether.Purcell, p. 436. Chapter 9.3, ""Maxwell's description of the electromagnetic field was essentially complete."" In classical electromagnetism, the behavior of the electromagnetic field is described by a set of equations known as Maxwell's equations, and the electromagnetic force is given by the Lorentz force law.Purcell: p. 278: Chapter 6.1, ""Definition of the Magnetic Field."" Lorentz force and force equation.",0.75,local,what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation?,1634579965
+969,Pick the best possible answer: What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? among the listed options.,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.35294117647058826,local,pick the best possible answer: what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? among the listed options.,3753773471
+970,Identify the correct statement: What is the relationship between Coordinated Universal Time (UTC) and Universal Time (UT1)? carefully.,UTC and Universal Time (UT1) are identical time scales that are used interchangeably in science and engineering.,"UTC is a time scale that is completely independent of Universal Time (UT1). UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by a non-integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by an integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".",UTC is a time scale that is based on the irregularities in Earth's rotation and is completely independent of Universal Time (UT1).,D,"The BIPM has an important role in maintaining accurate worldwide time of day. It combines, analyses, and averages the official atomic time standards of member nations around the world to create a single, official Coordinated Universal Time (UTC).
+
+Relation to UTC 
+Contrary to TAI, UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time by a constant offset. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2.  Afterwards, these adjustments were made only in whole seconds to approximate UT1. This was a compromise arrangement in order to enable a publicly broadcast time scale. The less frequent whole-second adjustments meant that the time scale would be more stable and easier to synchronize internationally. The fact that it continues to approximate UT1 means that tasks, such as navigation, which require a source of Universal Time continue to be well served by the public broadcast of UTC.",0.5454545454545454,local,identify the correct statement: what is the relationship between coordinated universal time (utc) and universal time (ut1)? carefully.,3660134485
+971,Select the most accurate option: What is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza?,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,No match found.,0.0,live_api,select the most accurate option: what is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza?,3962697044
+972,Select the most accurate option: What is the relevant type of coherence for the Young's double-slit interferometer?,Visibility,Coherence time,Spatial coherence,Coherence length,Diameter of the coherence area (Ac),E,"If waves are emitted from an extended source, this can lead to incoherence in the transversal direction. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherence length. In the case of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting pattern on a screen would look like two single-slit diffraction patterns.",0.4166666666666667,local,select the most accurate option: what is the relevant type of coherence for the young's double-slit interferometer?,4255186555
+973,Choose the correct answer: What is the definition of an improper rotation? carefully.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"where  is some set with cardinality . One can show that the generalized binomial coefficient is well-defined, in the sense that no matter what set we choose to represent the cardinal number ,  will remain the same. For finite cardinals, this definition coincides with the standard definition of the binomial coefficient.
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.5714285714285714,local,choose the correct answer: what is the definition of an improper rotation? carefully.,3179443966
+974,"Determine the correct option: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion?","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)
+
+This acceleration and the mass of the particle determine the necessary centripetal force, directed toward the centre of the circle, as the net force acting on this particle to keep it in this uniform circular motion. The so-called 'centrifugal force', appearing to act outward on the body, is a so-called pseudo force experienced in the frame of reference of the body in circular motion, due to the body's linear momentum, a vector tangent to the circle of motion.",0.5333333333333333,local,"determine the correct option: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion?",1511617014
+975,Select the most accurate option: What is the De Haas-Van Alphen effect?,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.",0.5555555555555556,local,select the most accurate option: what is the de haas-van alphen effect?,338346829
+976,Choose the correct answer: What is Lorentz symmetry or Lorentz invariance in relativistic physics? from the following choices.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"The path-integral formulation of quantum mechanics generalizes the action principle of classical mechanics.  It replaces the classical notion of a single, unique classical trajectory for a system with a sum, or functional integral, over an infinity of quantum-mechanically possible trajectories to compute a quantum amplitude.
+This formulation has proven crucial to the subsequent development of theoretical physics, because manifest Lorentz covariance (time and space components of quantities enter equations in the same way) is easier to achieve than in the operator formalism of canonical quantization. Unlike previous methods, the path integral allows one to easily change coordinates between very different canonical descriptions of the same quantum system. Another advantage is that it is in practice easier to guess the correct form of the Lagrangian of a theory, which naturally enters the path integrals (for interactions of a certain type, these are coordinate-space, or Feynman path integr",0.36363636363636365,live_api,choose the correct answer: what is lorentz symmetry or lorentz invariance in relativistic physics? from the following choices.,4162344163
+977,What did Newton's manuscripts of the 1660s show?,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,"Bibliography
+ Apple's press release on the debut of the MessagePad 2100: 
+ Apple's overview of features & limitations of Newton Connection Utilities: 
+ Newton overview at Newton Source archived from Apple: 
+ Newton FAQ: 
+ Newton Gallery: 
+ Birth of the Newton: 
+ The Newton Hall of Fame: People behind the Newton: 
+ Pen Computing's Why did Apple kill the Newton?: 
+ Pen Computing's Newton Notes column archive: 
+ A.I. Magazine article by Yaeger on Newton HWR design, algorithms, & quality: 
+ Associated slides: 
+ Info on Newton HWR from Apple's HWR Technical Lead: 
+ Notes on the History of Pen-based Computing: 
+ This links to:
+
+We do not know much about the canon of the Essenes, and what their attitude was towards the apocryphal writings. However, the Essenes perhaps did not esteem the book of Esther highly as manuscripts of Esther are completely absent in Qumran, likely because of their opposition to mixed marriages and the use of different calendars.
+
+See comments in Wired's Apple Newton Just Won't Drop: 
+ See text under ""Handwriting Recognition"" in Pen Computing's First Look at Newton OS 2.0: 
+ See ""Opportunity Squandered"" in Pen Computing's Why did Apple kill the Newton?: 
+ See comments under ""Software"" in MacTech's MessagePad 2000 review: 
+ Comments by Pen Computing's editor: 
+ See user testing results discussed in part 6 of this A.I. Magazine article on Newton HWR: 
+ MessagePad 2000 review at Small Dog Electronics: 
+ See comments under ""Note-taking"" in MessagePad 2000 review at ""The History and Macintosh Society"": 
+ What's Right With The Newton: HWR: 
+ Assessment by Apple developer: 
+ Prof. Warden's MessagePad 130 review:  Recognition and computation of handwritten horizontal and vertical formulas such as ""1 + 2 ="" was also under development but never released. However, users wrote similar programs which could evaluate mathematical formulas using the Newton OS Intelligent Assistant, a unique part of every Newton device.",0.6666666666666666,local,what did newton's manuscripts of the 1660s show?,2785098156
+978,Select the most accurate option: What is the SI unit of the physical quantity m/Q? from the following choices.,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by
+
+The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.75,local,select the most accurate option: what is the si unit of the physical quantity m/q? from the following choices.,4082221135
+979,Identify the correct statement: What is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? carefully.,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,No match found.,0.0,live_api,identify the correct statement: what is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? carefully.,2200926427
+980,Which of the following is correct? What is the reason that Newton's second law cannot be used to calculate the development of a physical mechanism in quantum mechanics? from the following choices.,"The existence of particle spin, which is linear momentum that can be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that is always equal to zero.","The existence of particle spin, which is linear momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that can be described by the cumulative effect of point-like motions in space.",D,"While angular momentum total conservation can be understood separately from Newton's laws of motion as stemming from Noether's theorem in systems symmetric under rotations, it can also be understood simply as an efficient method of calculation of results that can also be otherwise arrived at directly from Newton's second law, together with laws governing the forces of nature (such as Newton's third law, Maxwell's equations and Lorentz force). Indeed, given initial conditions of position and velocity for every point, and the forces at such a condition, one may use Newton's second law to calculate the second derivative of position, and solving for this gives full information on the development of the physical system with time.Tenenbaum, M., & Pollard, H. (1985). Ordinary differential equations en elementary textbook for students of mathematics. Engineering and the Sciences. Note, however, that this is no longer true in quantum mechanics, due to the existence of particle spin, which is an angular momentum that cannot be described by the cumulative effect of point-like motions in space.
+
+Molecular dynamics (MD) use either quantum mechanics, molecular mechanics or a mixture of both to calculate forces which are then used to solve Newton's laws of motion to examine the time-dependent behavior of systems. The result of a molecular dynamics simulation is a trajectory that describes how the position and velocity of particles varies with time. The phase point of a system described by the positions and momenta of all its particles on a previous time point will determine the next phase point in time by integrating over Newton's laws of motion.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.",0.8947368421052632,local,which of the following is correct? what is the reason that newton's second law cannot be used to calculate the development of a physical mechanism in quantum mechanics? from the following choices.,2270053198
+981,Select the most accurate option: What is the explanation for the effective supersymmetry in quark-diquark models? carefully.,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,No match found.,0.0,live_api,select the most accurate option: what is the explanation for the effective supersymmetry in quark-diquark models? carefully.,3619126275
+982,What is the reason for heating metals to a temperature just above the upper critical temperature?,"To prevent the grains of solution from growing too large, which decreases mechanical properties such as toughness, shear strength, and tensile strength.","To increase the size of the grains of solution, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too large, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too small, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To increase the size of the grains of solution, which decreases mechanical properties such as toughness, shear strength, and tensile strength.",C,"At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of the material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with ""ceramic"" in the context of ceramic capacitors for just this reason.
+
+Positive thermal coefficient
+Temperature increases can cause grain boundaries to suddenly become insulating in some semiconducting ceramic materials, mostly mixtures of heavy metal titanates. The critical transition temperature can be adjusted over a wide range by variations in chemistry. In such materials, current will pass through the material until joule heating brings it to the transition temperature, at which point the circuit will be broken and current flow will cease. Such ceramics are used as self-controlled heating elements in, for example, the rear-window defrost circuits of automobiles.
+
+in 3D uniform space. This is equivalent to the above condition on the temperature. In a 3D harmonic potential, the critical value is instead",0.75,local,what is the reason for heating metals to a temperature just above the upper critical temperature?,1435975616
+983,"Pick the best possible answer: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? carefully.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is operated by five partner space agencies: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada). It is the first space station built, maintained and crewed through international cooperation and the largest human spacecraft ever constructed. It is an orbital research station, where scientific experiments in microgravity are conducted and the space environment is studied. Since 2 November 2000, it has hosted the longest continuous presence of humans in space. Alongside Tiangong, it is one of the only two currently operational space stations.
+The station orbits between 51.64° north and south, at about 400 kilometres (250 miles) above Earth, below the Van Allen radiation belts and most space debris. Its orbit takes it at 7.67 km/s (27,600 km/h; 17,200 mph) roughly every 93 minutes around Earth, 15.5 times a da",0.1,live_api,"pick the best possible answer: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? carefully.",2105427467
+984,Select the most accurate option: What is the significance of probability amplitudes in quantum mechanics? carefully.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+Consider a quantum circuit , which consists of  gates, , where each  comes from a universal gate set and acts on at most two qubits.
+To understand what the sum of histories is, we visualize the evolution of a quantum state given a quantum circuit as a tree. The root is the input , and each node in the tree has  children, each representing a state in . The weight on a tree edge from a node in -th level representing a state  to a node in -th level  representing a state  is , the amplitude of  after applying  on . The transition amplitude of a root-to-leaf path is the product of all the weights on the edges along the path. To get the probability of the final state being , we sum up the amplitudes of all root-to-leave paths that ends at a node representing .",0.4,local,select the most accurate option: what is the significance of probability amplitudes in quantum mechanics? carefully.,604833477
+985,Select the most accurate option: What is the relationship between chemical potential and quarks/antiquarks?,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a framework. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a structure. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a mechanism. Higher μ indicates a higher density of quarks.",A,"where the n is the number of up and down quarks and antiquarks.
+
+where
+  is the number of constituent quarks, and
+  is the number of constituent antiquarks.
+
+The name ""baryon"", introduced by Abraham Pais, ""... it seems practical to have a collective name for these particles and other which possibly may still be discovered and which may also have to be taken along in the conservation principle just mentioned. It is proposed to use the fitting name 'baryon' for this purpose."" comes from the Greek word for ""heavy"" (βαρύς, barýs), because, at the time of their naming, most known elementary particles had lower masses than the baryons. Each baryon has a corresponding antiparticle (antibaryon) where their corresponding antiquarks replace quarks. For example, a proton is made of two up quarks and one down quark; and its corresponding antiparticle, the antiproton, is made of two up antiquarks and one down antiquark.",0.3,local,select the most accurate option: what is the relationship between chemical potential and quarks/antiquarks?,2719402681
+986,Choose the correct answer: What is classical mechanics? carefully.,"Classical mechanics is the branch of physics that describes the motion of macroscopic objects using concepts such as mass, acceleration, and force. It is based on a three-dimensional Euclidean space with fixed axes, and utilises many equations and mathematical concepts to relate physical quantities to one another.","Classical mechanics is the branch of physics that describes the motion of microscopic objects using concepts such as energy, momentum, and wave-particle duality. It is based on a four-dimensional space-time continuum and utilises many equations and mathematical concepts to relate physical quantities to one another.",Classical mechanics is the branch of physics that studies the behaviour of subatomic particles such as electrons and protons. It is based on the principles of quantum mechanics and utilises many equations and mathematical concepts to describe the properties of these particles.,Classical mechanics is the branch of physics that studies the behaviour of light and electromagnetic radiation. It is based on the principles of wave-particle duality and utilises many equations and mathematical concepts to describe the properties of light.,Classical mechanics is the branch of physics that studies the behaviour of fluids and gases. It is based on the principles of thermodynamics and utilises many equations and mathematical concepts to describe the properties of these substances.,A,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.3333333333333333,local,choose the correct answer: what is classical mechanics? carefully.,3721157078
+987,Which of the following is correct? What is the Evans balance? based on the given context.,"The Evans balance is a mechanism used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a framework used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a mechanism used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a mechanism used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a framework used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Evans did not go on the geology field trips, having his own set of trainers—by this time, geology training for the CMP was well-established. He would fly with a NASA geologist/pilot, Dick Laidley, over geologic features, with part of the exercise conducted at , and part at  to . The higher altitude was equivalent to what could be seen from the planned lunar orbit of about 60 nmi with binoculars. Evans would be briefed for several hours before each exercise, and given study guides; afterwards, there would be debriefing and evaluation. Evans was trained in lunar geology by Farouk El-Baz late in the training cycle; this continued until close to launch. The CMP was given information regarding the lunar features he would overfly in the CSM and which he was expected to photograph.
+
+Other biblical figures
+Apart from the king (or kings) of Gerar, the Bible also records this name for:
+The father of Abiathar, and high priest in the time of David. In the parallel passage, the name is given as Ahimelech; most authorities consider this the more correct reading.
+The king of Gath better known as Achish, referred to as Abimelech or Achimelech in the title of Psalm 34.
+The husband of Naomi, and father of Mahlon and Chilion who leaves Bethlehem and dies in the land of Moab, in the Hebrew, his name is given as Elimelek, which is likely the correct reading.",0.75,local,which of the following is correct? what is the evans balance? based on the given context.,2907738729
+988,Pick the best possible answer: What was Isaac Newton's explanation for rectilinear propagation of light? from the following choices.,"Isaac Newton rejected the wave framework of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave framework of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave concept of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave principle of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,"Fresnel gave the first satisfactory explanation of diffraction by straight edges, including the first satisfactory wave-based explanation of rectilinear propagation. By further supposing that light waves are purely transverse, Fresnel explained the nature of polarization. He then worked on double refraction.",0.2857142857142857,local,pick the best possible answer: what was isaac newton's explanation for rectilinear propagation of light? from the following choices.,2424619296
+989,Choose the correct answer: How many crystallographic point groups are there in three-dimensional space? based on the given context.,7,32,14,5,27,B,No match found.,0.0,live_api,choose the correct answer: how many crystallographic point groups are there in three-dimensional space? based on the given context.,2767634649
+990,Which of the following is correct? What is the butterfly effect?,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the variation between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Differentiating types of butterfly effects 
+The concept of the butterfly effect encompasses several phenomena. The two kinds of butterfly effects, including the sensitive dependence on initial conditions, and the ability of a tiny perturbation to create an organized circulation at large distances, are not exactly the same. In Palmer et al., a new type of butterfly effect is introduced, highlighting the potential impact of small-scale processes on finite predictability within the Lorenz 1969 model. Additionally, the identification of ill-conditioned aspects of the Lorenz 1969 model points to a practical form of finite predictability. These two distinct mechanisms suggesting finite predictability in the Lorenz 1969 model are collectively referred to as the third kind of butterfly effect. The authors in  have considered Palmer et al.'s suggestions and have aimed to present their perspective without raising specific contentions.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.",0.6,local,which of the following is correct? what is the butterfly effect?,1867768533
+991,"Choose the correct answer: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? among the listed options.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is operated by five partner space agencies: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada). It is the first space station built, maintained and crewed through international cooperation and the largest human spacecraft ever constructed. It is an orbital research station, where scientific experiments in microgravity are conducted and the space environment is studied. Since 2 November 2000, it has hosted the longest continuous presence of humans in space. Alongside Tiangong, it is one of the only two currently operational space stations.
+The station orbits between 51.64° north and south, at about 400 kilometres (250 miles) above Earth, below the Van Allen radiation belts and most space debris. Its orbit takes it at 7.67 km/s (27,600 km/h; 17,200 mph) roughly every 93 minutes around Earth, 15.5 times a da",0.09523809523809523,live_api,"choose the correct answer: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? among the listed options.",1229698258
+992,Determine the correct option: What is the variation between active and passive transport in cells? carefully.,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"A perovskite solar cell (PSC) is a type of solar cell that includes a perovskite-structured compound, most commonly a hybrid organic–inorganic lead or tin halide-based material as the light-harvesting active layer. Perovskite materials, such as methylammonium lead halides the all-inorganic cesium lead halide, are cheap to produce and simple to manufacture.
+Solar-cell efficiencies of laboratory-scale devices using these materials have increased from 3.8% in 2009 to 27% in 2025 in single-junction architectures, and, in silicon-based tandem cells, to 34.85%, exceeding the maximum efficiency achieved in single-junction silicon solar cells. Perovskite solar cells have therefore been the fastest-advancing solar technology as of 2016.  With the potential of achieving even higher efficiencies and very low production costs, perovskite solar cells have become commercially attractive. Core problems and research subjects include their long-term stability, high sensitivity to moisture, and toxicity",0.2,live_api,determine the correct option: what is the variation between active and passive transport in cells? carefully.,1375945520
+993,Identify the correct statement: What was the aim of the Gravity Probe B (GP-B) mission? among the listed options.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"On the American late-night live television sketch comedy and variety show Saturday Night Live (SNL), a commercial advertisement parody is commonly shown after the host's opening monologue. Many of the parodies were produced by James Signorelli.  The industries, products, and ad formats targeted by the parodies have been wide-ranging, including fast food, beer, feminine hygiene products, toys, clothes, medications (both prescription and over-the-counter), financial institutions, automobiles, electronics, appliances, public-service announcements, infomercials, and movie & TV shows (including SNL itself).
+Many of SNL's ad parodies have been featured in prime-time clip shows over the years, including an April 1991 special hosted by Kevin Nealon and Victoria Jackson, as well as an early 1999 follow-up hosted by Will Ferrell that features his attempts to audition for a feminine hygiene commercial.  In late 2005 and in March 2009, the special was modernized, featuring commercials created sinc",0.07692307692307693,live_api,identify the correct statement: what was the aim of the gravity probe b (gp-b) mission? among the listed options.,2834113778
+994,Determine the correct option: What is the proper distance for a redshift of 8.2? carefully.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.3333333333333333,local,determine the correct option: what is the proper distance for a redshift of 8.2? carefully.,4011618660
+995,Identify the correct statement: What is the Landau-Lifshitz-Gilbert equation used for in physics? from the following choices.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,"Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist best known for developing the known theory of relativity. Einstein also made important contributions to quantum theory. His mass–energy equivalence formula E = mc2, which arises from special relativity, has been called ""the world's most famous equation"". He received the 1921 Nobel Prize in Physics for ""his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect"".
+Born as a subject to the Kingdom of Württemberg, part of the German Empire, Einstein moved to Switzerland in 1895, forsaking his citizenship the following year. In 1896, at the age of seventeen, he enrolled in the mathematics and physics teaching diploma program at the Swiss federal polytechnic school in Zurich, graduating in 1900. He acquired Swiss citizenship a year later, which he kept for the rest of his life, and afterwards secured a permanent position at the Swiss Patent Office in Bern.",0.2727272727272727,local,identify the correct statement: what is the landau-lifshitz-gilbert equation used for in physics? from the following choices.,3734953428
+996,Select the most accurate option: What is radiometric dating? from the following choices.,"Radiometric dating is a approach of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which landed the first humans on the Moon in 1969. Apollo was conceived in 1960 in the Dwight D. Eisenhower presidency during Project Mercury and executed after Project Gemini. Apollo was later dedicated to President John F. Kennedy's national goal, ""before this decade is out, of landing a man on the Moon and returning him safely to the Earth"" in his address to the U.S. Congress on May 25, 1961.
+Kennedy's goal was accomplished on the Apollo 11 mission, when astronauts Neil Armstrong and Buzz Aldrin landed their Apollo Lunar Module (LM) on July 20, 1969, and walked on the lunar surface, while Michael Collins remained in lunar orbit in the command and service module (CSM), and all three landed safely on Earth in the Pacific Ocean on July 24. Approximately 650 million people worldwide watched this first landing on television. Five subsequent Apollo missions also landed astronauts",0.0,live_api,select the most accurate option: what is radiometric dating? from the following choices.,29293283
+997,"Which of the following is correct? What is the concept of simultaneity in Einstein's book, Relativity?","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.",0.7777777777777778,local,"which of the following is correct? what is the concept of simultaneity in einstein's book, relativity?",858490276
+998,Select the most accurate option: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? from the following choices.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+Although supermassive black holes are expected to be found in most AGN, only some galaxies' nuclei have been more carefully studied in attempts to both identify and measure the actual masses of the central supermassive black hole candidates. Some of the most notable galaxies with supermassive black hole candidates include the Andromeda Galaxy, Messier 32, Messier 87, the Sombrero Galaxy, and the Milky Way itself.",0.6,local,select the most accurate option: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? from the following choices.,2119808207
+999,Which of the following is correct? What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level?,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,"One model that estimates the properties of an electron gas at absolute zero in metals is the Fermi gas. The electrons, being fermions, must be in different quantum states, which leads the electrons to get very high typical velocities, even at absolute zero. The maximum energy that electrons can have at absolute zero is called the Fermi energy. The Fermi temperature is defined as this maximum energy divided by the Boltzmann constant, and is on the order of 80,000 K for typical electron densities found in metals. For temperatures significantly below the Fermi temperature, the electrons behave in almost the same way as at absolute zero. This explains the failure of the classical equipartition theorem for metals that eluded classical physicists in the late 19th century.
+
+Density 
+The alkali metals all have the same crystal structure (body-centred cubic) and thus the only relevant factors are the number of atoms that can fit into a certain volume and the mass of one of the atoms, since density is defined as mass per unit volume. The first factor depends on the volume of the atom and thus the atomic radius, which increases going down the group; thus, the volume of an alkali metal atom increases going down the group. The mass of an alkali metal atom also increases going down the group. Thus, the trend for the densities of the alkali metals depends on their atomic weights and atomic radii; if figures for these two factors are known, the ratios between the densities of the alkali metals can then be calculated. The resultant trend is that the densities of the alkali metals increase down the table, with an exception at potassium. Due to having the lowest atomic weight and the largest atomic radius of all the elements in their periods, the alkali metals are the least dense metals in the periodic table. Lithium, sodium, and potassium are the only three metals in the periodic table that are less dense than water: in fact, lithium is the least dense known solid at room temperature.",0.47058823529411764,local,which of the following is correct? what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level?,3154862801
+1000,Select the most accurate option: What is the Maxwell's Demon thought experiment? among the listed options.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an raise in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an boost in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an enhance in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,select the most accurate option: what is the maxwell's demon thought experiment? among the listed options.,3944015457
+1001,Select the most accurate option: What is the Landau-Lifshitz-Gilbert equation used for in physics? based on the given context.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,This glossary of engineering terms is a list of definitions about the major concepts of engineering. Please see the bottom of the page for glossaries of specific fields of engineering.,0.0,live_api,select the most accurate option: what is the landau-lifshitz-gilbert equation used for in physics? based on the given context.,1599926029
+1002,"Determine the correct option: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft?",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"Europa ( ) is the smallest and least massive of Jupiter's four Galilean moons. It is observable from Earth with common binoculars and is a planetary-mass moon, slightly smaller and less massive than Earth's Moon. Europa is an icy moon, and, of the three icy Galilean moons, the closest orbiting Jupiter. As a result, it exhibits a relatively young surface shaped by tidal heating.
+Europa consists mainly of silicate rock, and potentially has an iron-nickel core. It has a very thin atmosphere composed primarily of oxygen. Europa has a pale, geologically young surface striated by light tan cracks and streaks; the surface lacks large-scale features such as mountains or craters, making the moon the smoothest known solid object in the Solar System. The apparent youth and smoothness of the surface is due to a water ocean beneath the surface, which could conceivably harbor extraterrestrial life. The predominant model suggests that heat from tidal flexing causes the ocean to remain liquid and driv",0.058823529411764705,live_api,"determine the correct option: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft?",3109432600
+1003,Which of the following is correct? What is the gravitomagnetic interaction? from the following choices.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general principle of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"A context menu (also called contextual, shortcut, and pop up or pop-up menu) is a menu in a graphical user interface (GUI) that appears upon user interaction, such as a right-click mouse operation. A context menu offers a limited set of choices that are available in the current state, or context, of the operating system or application to which the menu belongs. Usually the available choices are actions related to the selected object. From a technical point of view, such a context menu is a graphical control element.
+
+Shoghi Effendi, the head of the religion from 1921 to 1957, wrote the following summary of what he considered to be the distinguishing principles of Baháʼu'lláh's teachings, which, he said, together with the laws and ordinances of the Kitáb-i-Aqdas constitute the bedrock of the Baháʼí Faith:
+
+In many superconductors, the attractive interaction between electrons (necessary for pairing) is brought about indirectly by the Bardeen–Pines interaction between the electrons and the vibrating crystal lattice (the phonons). Roughly speaking the picture is the following:",0.6666666666666666,local,which of the following is correct? what is the gravitomagnetic interaction? from the following choices.,675203765
+1004,Which of the following is correct? Which of the following statements accurately describes the origin and significance of the triskeles symbol? based on the given context.,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,"Closure properties
+The class of context-free languages is closed under the following operations. That is, if L and P are context-free languages, the following languages are context-free as well:
+the union  of L and P
+the reversal of L
+the concatenation  of L and P
+the Kleene star  of L
+the image  of L under a homomorphism 
+the image  of L under an inverse homomorphism 
+the circular shift of L (the language )
+the prefix closure of L (the set of all prefixes of strings from L)
+the quotient L/R of L by a regular language R
+
+Ammianus' work contains a detailed description of the earthquake and tsunami of 365 in Alexandria, which devastated the metropolis and the shores of the eastern Mediterranean on 21 July 365. His report describes accurately the characteristic sequence of earthquake, retreat of the sea, and sudden incoming giant wave.
+
+The emperor's fundamental role within the machinery of the Japanese constitution is to perform important representational functions as ""…the symbol of the State and of the unity of the People, deriving his position from the will of the people with whom resides sovereign power."" He is limited to performing ""acts in matters of state"" as delineated by the Constitution, without even nominal powers related to government. Moreover, said acts are only exercised in accordance with the binding advice and consent of the Cabinet, which is collectively responsible to the Diet and thence to the electorate. Nevertheless, the emperor enjoys the following rights in the conduct of state business: (a) the right to be consulted before acting on ministerial advice; (b) the right to encourage a given policy or course of administrative action; and (c) the right to warn the Cabinet against the same. In these respects, the emperor personifies the democratic state, sanctions legitimate authority, ensures the legality of his official acts, and guarantees the execution of the public will. These functions, when considered altogether, serve two purposes: foremost, to uphold the continuity and stability of Japanese democracy; and second, to foster a shared national identity and cultural heritage that transcends party politics. In order to maintain his institutional neutrality as Japan's national symbol, he is barred from making political statements.",0.6153846153846154,local,which of the following is correct? which of the following statements accurately describes the origin and significance of the triskeles symbol? based on the given context.,4278231688
+1005,Determine the correct option: What is the effect generated by a spinning superconductor? based on the given context.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.3,local,determine the correct option: what is the effect generated by a spinning superconductor? based on the given context.,2693189086
+1006,Select the most accurate option: Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect? among the listed options.,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.",0.3333333333333333,local,select the most accurate option: who was the first to determine the velocity of a star moving away from the earth using the doppler effect? among the listed options.,3885446470
+1007,Choose the correct answer: What is a pycnometer?,A device used to measure the density of a gas.,A device used to measure the mass of a liquid.,A device used to measure the volume of a gas.,A device used to determine the density of a liquid.,A device used to determine the volume of a liquid.,D,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.
+
+Measurement 
+A number of techniques as well as standards exist for the measurement of density of materials. Such techniques include the use of a hydrometer (a buoyancy method for liquids), hydrostatic weighing (a buoyancy method for liquids and solids), immersed body method (a buoyancy method for liquids), pycnometer (liquids and solids), air comparison pycnometer (solids), oscillating U-tube (liquids), as well as pour and tap (solids). However, each individual method or technique measures different types of density (e.g. bulk density, skeletal density, etc.), and therefore it is necessary to have an understanding of the type of density  being measured as well as the type of material in question.",0.75,local,choose the correct answer: what is a pycnometer?,4276129167
+1008,What is the explanation for the effective supersymmetry in quark-diquark models?,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,"Constraints on supersymmetry 
+For decades, the leading candidate for dark matter was the lightest neutralino predicted by supersymmetry. However, extensive searches through the conclusion of the LHC's run 3 (2022–2025) operations have failed to detect the superpartners (such as squarks and gluinos) predicted by supersymmetry models. By late 2025, the ATLAS and CMS collaborations had pushed exclusion limits for gluinos beyond 2.4 TeV, and limits for charginos and neutralinos (""electroweak-inos"") beyond 1 TeV in many scenarios. This persistent absence has ruled out the most favored parameter space for WIMPs, forcing theorists to consider more complex and fine-tuned models such as ""split supersymmetry,"" or to abandon supersymmetry candidates entirely.
+
+At the fundamental level (as depicted in the Feynman diagram on the right), this is caused by the conversion of the negatively charged () down quark to the positively charged () up quark, which is promoted by a virtual  boson; the  boson subsequently decays into an electron and an electron antineutrino:
+ →  +  + .
+
+Because supersymmetric extensions of the Standard Model of particle physics readily predict a new particle with these properties, this apparent coincidence has been called the ""WIMP miracle"", and a stable supersymmetric partner has long been a prime explanation for dark matter. Experimental efforts to detect WIMPs include the search for products of WIMP annihilation, including gamma rays, neutrinos and cosmic rays in nearby galaxies and galaxy clusters; direct detection experiments designed to measure the collision of WIMPs with nuclei in the laboratory, as well as attempts to directly produce WIMPs in colliders, such as the Large Hadron Collider at CERN. In the early 2010s, results from direct-detection experiments along with the lack of evidence for supersymmetry at the Large Hadron Collider (LHC) experiment have cast doubt on the simplest WIMP hypothesis.",0.6666666666666666,local,what is the explanation for the effective supersymmetry in quark-diquark models?,4031303241
+1009,Pick the best possible answer: Who was the first person to describe the pulmonary circulation framework? carefully.,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.",0.3333333333333333,local,pick the best possible answer: who was the first person to describe the pulmonary circulation framework? carefully.,2194046973
+1010,Choose the correct answer: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? based on the given context.,The atmosphere is a mechanism that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized frameworks and time-varying forcing from recurrent seasons.",The atmosphere is a framework that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic structure with no order or organization.,The atmosphere is a completely ordered framework with no chaos or randomness.,B,No match found.,0.0,live_api,choose the correct answer: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? based on the given context.,3066341320
+1011,Pick the best possible answer: What is the reason for the sun appearing slightly yellowish when viewed from Earth?,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,"Jurassic Park, later also referred to as Jurassic World, is an American science fiction media franchise. It focuses on the cloning of prehistoric animals (mainly non-avian dinosaurs) through ancient DNA extracted from mosquitoes that have been fossilized in amber. The franchise explores the ethics of cloning and genetic engineering and the morals behind de-extinction, commercialization of science, and animal cruelty.
+The franchise began in 1990 with the release of Michael Crichton's novel Jurassic Park. A 1993 film adaptation, also titled Jurassic Park, was directed by Steven Spielberg. Crichton then wrote a sequel novel, The Lost World (1995), and Spielberg directed its film adaptation, The Lost World: Jurassic Park (1997). Additional films have been released since then, including Jurassic Park III in 2001, completing the original trilogy of films.
+The fourth installment, Jurassic World, was released in 2015, marking the start of a new trilogy. Its sequel, Jurassic World: Fallen Kingd",0.0,live_api,pick the best possible answer: what is the reason for the sun appearing slightly yellowish when viewed from earth?,4277124725
+1012,Choose the correct answer: What is the variation between natural convection and forced convection? based on the given context.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,No match found.,0.0,live_api,choose the correct answer: what is the variation between natural convection and forced convection? based on the given context.,643672363
+1013,Identify the correct statement: What is the Kutta condition? among the listed options.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,No match found.,0.0,live_api,identify the correct statement: what is the kutta condition? among the listed options.,445255231
+1014,Choose the correct answer: What is the American Petroleum Institute (API) gravity? from the following choices.,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,No match found.,0.0,live_api,choose the correct answer: what is the american petroleum institute (api) gravity? from the following choices.,3504703676
+1015,Select the most accurate option: What is the relationship between the amplitude of a sound wave and its loudness? based on the given context.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.5714285714285714,local,select the most accurate option: what is the relationship between the amplitude of a sound wave and its loudness? based on the given context.,3905495860
+1016,Which of the following is correct? What is the reason for the sun appearing slightly yellowish when viewed from Earth? among the listed options.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,"An equinox is equivalently defined as the time when the plane of Earth's equator passes through the geometric center of the Sun's disk. This is also the moment when Earth's rotation axis is directly perpendicular to the Sun-Earth line, tilting neither toward nor away from the Sun. In modern times, since the Moon (and to a lesser extent the planets) causes Earth's orbit to vary slightly from a perfect ellipse, the equinox is officially defined by the Sun's more regular ecliptic longitude rather than by its declination. The instants of the equinoxes are currently defined to be when the apparent geocentric longitude of the Sun is 0° and 180°.
+
+In terms of Earth's rotation, the average day length is about 360.9856°. A day lasts for more than 360° of rotation because of the Earth's revolution around the Sun.  With a full year being slightly more than 360 days, the Earth's daily orbit around the Sun is slightly less than 1°, so the day is slightly less than 361° of rotation.
+
+Solar annual aberration
+A special case of annual aberration is the nearly constant deflection of the Sun from its position in the Sun's rest frame by  towards the west (as viewed from Earth), opposite to the apparent motion of the Sun along the ecliptic (which is from west to east, as seen from Earth). The deflection thus makes the Sun appear to be behind (or retarded) from its rest-frame position on the ecliptic by a position or angle .",0.42857142857142855,local,which of the following is correct? what is the reason for the sun appearing slightly yellowish when viewed from earth? among the listed options.,4149053298
+1017,Which of the following is correct? What is a planetary framework? carefully.,A mechanism of planets that are all located in the same solar mechanism.,A structure of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star mechanism.,A structure of planets that are all located in the same galaxy.,A framework of planets that are all made of gas.,C,"Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+Relationship to surface bulk density
+In the event that most of the echo is from first surface reflections ( or so), the OC radar albedo is a first-order approximation of the Fresnel reflection coefficient (aka reflectivity) and can be used to estimate the bulk density of a planetary surface to a depth of a meter or so (a few wavelengths of the radar wavelength which is typically at the decimeter scale) using the following empirical relationships:
+
+On Earth, the recognition of impact craters is a branch of geology, and is related to planetary geology in the study of other worlds. Out of many proposed craters, relatively few are confirmed. The following twenty are a sample of articles of confirmed and well-documented impact sites.",0.5,local,which of the following is correct? what is a planetary framework? carefully.,3041468003
+1018,Which of the following is correct? What is the origin of the radio emission observed from supernova remnants? carefully.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,"Antlia is home to the huge Antlia Supernova Remnant, one of the largest supernova remnants in the sky.
+
+On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+In April 2003, the Supernova Legacy Survey observed a type Ia supernova, designated SNLS-03D3bb, in a galaxy approximately 4 billion light years away. According to astronomers at the University of Toronto and elsewhere, the observations of this supernova are best explained by assuming that it arose from a white dwarf that had grown to twice the mass of the Sun before exploding.",0.4,local,which of the following is correct? what is the origin of the radio emission observed from supernova remnants? carefully.,3874550156
+1019,Determine the correct option: What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space?,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.46153846153846156,local,determine the correct option: what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space?,4047310465
+1020,Identify the correct statement: What is the definition of an improper rotation? based on the given context.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Substitution is replacing the terms in an expression to create a new expression. Substituting 3 for  in the expression  makes a new expression  with meaning . Substituting the terms of a statement makes a new statement. When the original statement is true independently of the values of the terms, the statement created by substitutions is also true. Hence, definitions can be made in symbolic terms and interpreted through substitution: if  is meant as the definition of  as the product of  with itself, substituting  for  informs the reader of this statement that  means . Often it's not known whether the statement is true independently of the values of the terms. And, substitution allows one to derive restrictions on the possible values, or show what conditions the statement holds under. For example, taking the statement , if  is substituted with , this implies , which is false, which implies that if  then  cannot be .
+
+One standard definition is that an angle is a figure consisting of two rays which lie in a plane and share a common endpoint. Alternatively, given such a figure, an angle might be defined as: the opening between the rays; the area of the plane that lies between the rays; or the amount of rotation about the vertex of one ray to the other.",0.5555555555555556,local,identify the correct statement: what is the definition of an improper rotation? based on the given context.,3526169407
+1021,"Identify the correct statement: What is the ""ultraviolet catastrophe""? among the listed options.",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven principle about the distribution of electromagnetic radiation.,B,"The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy. The Hubble Space Telescope is named after astronomer Edwin Hubble and is one of NASA's Great Observatories. The Space Telescope Science Institute (STScI) selects Hubble's targets and processes the resulting data, while the Goddard Space Flight Center (GSFC) controls the spacecraft.
+Hubble features a 2.4 m (7 ft 10 in) mirror, and its five main instruments observe in the ultraviolet, visible, and near-infrared regions of the electromagnetic spectrum. Hubble's orbit outside the distortion of Earth's atmosphere allows it to capture extremely high-resolution images with substantially lower background light than ground-based telescopes. It has recorded some of the most detailed visible light",0.125,live_api,"identify the correct statement: what is the ""ultraviolet catastrophe""? among the listed options.",3845576338
+1022,Which of the following is correct? What is the contrast between probability mass function (PMF) and probability density function (PDF)? from the following choices.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability framework.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .
+
+which is just the Fourier transform of the probability density. The original probability density may be expressed in terms of the characteristic function, essentially by using the inverse Fourier transform:",0.5,local,which of the following is correct? what is the contrast between probability mass function (pmf) and probability density function (pdf)? from the following choices.,3647308394
+1023,Determine the correct option: What is the significance of regularization in terms of renormalization problems in physics?,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a concept that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a mechanism below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a structure under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a framework below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.
+
+Wave mechanics 
+In January 1926, Schrödinger published in Annalen der Physik the paper """" (Quantization as an Eigenvalue Problem) on wave mechanics and presented what is now known as the Schrödinger equation. In this paper, he gave a ""derivation"" of the wave equation for time-independent systems and showed that it gave the correct energy eigenvalues for a hydrogen-like atom. This paper has been universally celebrated as one of the most important achievements of the twentieth century and created a revolution in most areas of quantum mechanics and indeed of all physics and chemistry. A second paper was submitted just four weeks later that solved the quantum harmonic oscillator, rigid rotor, and diatomic molecule problems and gave a new derivation of the Schrödinger equation. A third paper, published in May, showed the equivalence of his approach to that of Werner Heisenberg's matrix mechanics and gave the treatment of the Stark effect. A fourth paper in this series showed how to treat problems in which the system changes with time, as in scattering problems. In this paper, he introduced a complex solution to the wave equation in order to prevent the occurrence of fourth- and sixth-order differential equations. Schrödinger ultimately reduced the order of the equation to one.The Dreams That Stuff Is Made Of: The Most Astounding Papers of Quantum Physics—and How They Shook the Scientific World, Stephen Hawking, (editor), the papers by Schrödinger.",0.6666666666666666,local,determine the correct option: what is the significance of regularization in terms of renormalization problems in physics?,3752013092
+1024,Select the most accurate option: What is the variation between redshift due to the expansion of the universe and Doppler redshift? based on the given context.,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the enhance of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no contrast between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the boost of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.",0.5,local,select the most accurate option: what is the variation between redshift due to the expansion of the universe and doppler redshift? based on the given context.,1155837667
+1025,"Select the most accurate option: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? carefully.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"Lidar (, an acronym of light detection and ranging or laser imaging, detection, and ranging, often stylized LiDAR) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed direction (e.g., vertical) or it may scan directions, in a special combination of 3D scanning and laser scanning.
+
+Lidar has terrestrial, airborne, and mobile uses. It is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swathe mapping (ALSM), and laser altimetry. It is used to make digital 3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has also been increasingly used in control and navigation for autonomous cars and for the",0.1,live_api,"select the most accurate option: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? carefully.",3254867156
+1026,Which of the following is correct? What is the Optical Signal-to-Noise Ratio (OSNR)? from the following choices.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in frameworks where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in mechanisms where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.5555555555555556,local,which of the following is correct? what is the optical signal-to-noise ratio (osnr)? from the following choices.,3247296742
+1027,Determine the correct option: What is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another?,Intrinsic semiconductors,Electrical impedance tomography,Quantum conduction,Carrier mobility,Variable range hopping,E,No match found.,0.0,live_api,determine the correct option: what is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another?,2879955567
+1028,Select the most accurate option: What is the Maxwell's Demon thought experiment? from the following choices.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an boost in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an enhance in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an boost in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an enhance in temperature in the other, in accordance with the second law of thermodynamics.",C,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,select the most accurate option: what is the maxwell's demon thought experiment? from the following choices.,2089370473
+1029,Determine the correct option: What is accelerator-based light-ion fusion?,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This technique is relatively difficult to implement and requires a complex structure of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This procedure is relatively difficult to implement and requires a complex mechanism of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This procedure is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,determine the correct option: what is accelerator-based light-ion fusion?,2538019084
+1030,Which of the following is correct? What are the constituents of cold dark matter?,"They are unknown, but possibilities include large objects like MACHOs or new particles such as WIMPs and axions.",They are known to be black holes and Preon stars.,They are only MACHOs.,They are clusters of brown dwarfs.,They are new particles such as RAMBOs.,A,"In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form of energy known as dark energy. Thus, dark matter constitutes 85% of the total mass, while dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy, its local density in the Solar System is much less than normal matter. The total of all the dark matter out to the orbit of Neptune would add up about 1017 kg, the same as a large asteroid. Dark matter is classified as ""cold"", ""warm"", or ""hot"" according to velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.
+
+Dark matter can be divided into cold, warm, and hot categories. These categories refer to velocity rather than an actual temperature, and indicate how far corresponding objects moved due to random motions in the early universe, before they slowed due to cosmic expansion. This distance is called the free streaming length. The categories of dark matter are set with respect to the size of the collection of mass prior to structure formation that later collapses to form a dwarf galaxy. This collection of mass is sometimes called a protogalaxy. Dark matter particles are classified as cold, warm, or hot if their free streaming length is much smaller (cold), similar to (warm), or much larger (hot) than the protogalaxy of a dwarf galaxy. Mixtures of the above are also possible: a theory of mixed dark matter was popular in the mid-1990s, but was rejected following the discovery of dark energy.
+
+After the recombination epoch, the slightly denser regions of the uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today. The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter. The best measurements available, from the Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold. This CDM is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about 4.6%. (See Table 8.)",0.7142857142857143,local,which of the following is correct? what are the constituents of cold dark matter?,19710442
+1031,Determine the correct option: What is the explanation for the effective supersymmetry in quark-diquark models? from the following choices.,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,determine the correct option: what is the explanation for the effective supersymmetry in quark-diquark models? from the following choices.,4002241418
+1032,What is the formalism that angular momentum is associated with in rotational invariance?,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.
+
+Angular momentum is a vector quantity (more precisely, a pseudovector) that represents the product of a body's rotational inertia and rotational velocity (in radians/sec) about a particular axis. However, if the particle's trajectory lies in a single plane, it is sufficient to discard the vector nature of angular momentum, and treat it as a scalar (more precisely, a pseudoscalar). Angular momentum can be considered a rotational analog of linear momentum. Thus, where linear momentum  is proportional to mass  and linear speed",1.0,local,what is the formalism that angular momentum is associated with in rotational invariance?,1868362722
+1033,Choose the correct answer: What is the significance of probability amplitudes in quantum mechanics? from the following choices.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).",0.5,local,choose the correct answer: what is the significance of probability amplitudes in quantum mechanics? from the following choices.,3198367220
+1034,Identify the correct statement: What is the most popular explanation for the shower-curtain effect? based on the given context.,The pressure differential between the inside and outside of the shower,The lower in velocity resulting in an boost in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,identify the correct statement: what is the most popular explanation for the shower-curtain effect? based on the given context.,2991572686
+1035,Which of the following is correct? What is linear frame dragging? among the listed options.,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"Near a rotating black hole, spacetime rotates similar to a vortex. The rotating spacetime will drag any matter and light into rotation around the spinning black hole. This effect of general relativity, called frame dragging, gets stronger closer to the spinning mass. The region of spacetime in which it is impossible to stay still is called the ergosphere.",0.3333333333333333,local,which of the following is correct? what is linear frame dragging? among the listed options.,2829654064
+1036,Choose the correct answer: What is X-ray pulsar-based navigation (XNAV)?,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,choose the correct answer: what is x-ray pulsar-based navigation (xnav)?,805663100
+1037,Determine the correct option: What is the definition of Atomristor? based on the given context.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In legal systems based on legal moralism, the predominant moral beliefs of society determine the legal definition as well as the social definition of crime. This system is less prominent in liberal democratic societies that prioritize individualism and multiculturalism over other moral beliefs.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.75,local,determine the correct option: what is the definition of atomristor? based on the given context.,905272132
+1038,"Which of the following is correct? What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope?","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.
+
+When Ernst Öpik estimated the density of visual binary stars in 1916, he found that 40 Eridani B had a density of over  times that of the Sun, which was so high that he called it ""impossible"".
+As Eddington pointed out in 1924, densities of this order implied that, according to the theory of general relativity, the light from Sirius B should be gravitationally redshifted.
+A number of experimenters initially claimed to have identified the effect using astronomical measurements, and the effect was considered to have been finally identified in the spectral lines of the star Sirius B by W.S. Adams in 1925.Hetherington, N. S., ""Sirius B and the gravitational redshift - an historical review"", Quarterly Journal Royal Astronomical Society, vol. 21, Sept. 1980, pp. 246–252. Accessed 6 April 2017. However, measurements by Adams have been criticized as being too lowHolberg, J. B., ""Sirius B and the Measurement of the Gravitational Redshift"", Journal for the History of Astronomy, vol. 41, 1, 2010, pp. 41–64. Accessed 6 April 2017. and these observations are now considered to be measurements of spectra that are unusable because of scattered light from the primary, Sirius A. The first accurate measurement of the gravitational redshift of a white dwarf was done by Popper in 1954, measuring a 21 km/s gravitational redshift of 40 Eridani B. The redshift of Sirius B was finally measured by Greenstein et al. in 1971, obtaining the value for the gravitational redshift of 89±16 km/s, with more accurate measurements by the Hubble Space Telescope, showing 80.4±4.8 km/s.Effective Temperature, Radius, and Gravitational Redshift of Sirius B, J. L. Greenstein, J.B. Oke, H. L. Shipman, Astrophysical Journal 169 (Nov. 1, 1971), pp. 563–566.
+
+On larger scales, large galaxy redshift surveys may be used to make a three-dimensional map of the galaxy distribution. These maps are slightly distorted because distances are estimated from observed redshifts; the redshift contains a contribution from the galaxy's so-called peculiar velocity in addition to the dominant Hubble expansion term. On average, superclusters are expanding more slowly than the cosmic mean due to their gravity, while voids are expanding faster than average. In a redshift map, galaxies in front of a supercluster have excess radial velocities towards it and have redshifts slightly higher than their distance would imply, while galaxies behind the supercluster have redshifts slightly low for their distance. This effect causes superclusters to appear squashed in the radial direction, and likewise voids are stretched. Their angular positions are unaffected. This effect is not detectable for any one structure since the true shape is not known, but can be measured by averaging over many structures. It was predicted quantitatively by Nick Kaiser in 1987, and first decisively measured in 2001 by the 2dF Galaxy Redshift Survey. Results are in agreement with the Lambda-CDM model.",0.6666666666666666,local,"which of the following is correct? what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope?",352995401
+1039,Determine the correct option: What is the relationship between interstellar and cometary chemistry? among the listed options.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,No match found.,0.0,live_api,determine the correct option: what is the relationship between interstellar and cometary chemistry? among the listed options.,1380816839
+1040,"Pick the best possible answer: What is a transient condensation cloud, also known as a Wilson cloud? among the listed options.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Amphetamine is a central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy; it is also used to treat binge eating disorder in the form of lisdexamfetamine. Historically, it has been used to treat nasal congestion and depression. Amphetamine is also used as an athletic performance enhancer and cognitive enhancer, and recreationally as an aphrodisiac and euphoriant. It is a prescription drug in many countries, and unauthorized possession and distribution of amphetamine are often tightly controlled due to the significant health risks associated with recreational use.
+Amphetamine was discovered as a chemical in 1887 by Lazăr Edeleanu, and then as a drug in the late 1920s. It exists as two enantiomers: levoamphetamine and dextroamphetamine. The first amphetamine pharmaceutical was Benzedrine. Pharmaceutical amphetamine is prescribed as racemic amphetamine, Adderall, dextroamphetamine, or lisdexamfetamine. Amphetami",0.07692307692307693,live_api,"pick the best possible answer: what is a transient condensation cloud, also known as a wilson cloud? among the listed options.",2243028862
+1041,Select the most accurate option: What is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,No match found.,0.0,live_api,select the most accurate option: what is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,1893376390
+1042,Identify the correct statement: What is the relationship between chemical potential and quarks/antiquarks?,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a framework. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a framework. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a mechanism. Higher μ indicates a higher density of quarks.",A,"In physical science, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles. In everyday as well as scientific usage, matter generally includes atoms and anything made up of them, and any particles (or combination of particles) that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or heat. Matter exists in various states (also known as phases). These include classical everyday phases such as solid, liquid, and gas – for example water exists as ice, liquid water, and gaseous steam – but other states are possible, including plasma, Bose–Einstein condensates, fermionic condensates, and quark–gluon plasma.
+Usually, atoms can be imagined as a nucleus consisting of subatomic particles, protons and neutrons and a surrounding ""cloud"" of or",0.0,live_api,identify the correct statement: what is the relationship between chemical potential and quarks/antiquarks?,728533250
+1043,Pick the best possible answer: What is the Liouville density? from the following choices.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"In the Hamiltonian formalism, given a coordinate it is possible to derive the appropriate (generalized) momentum such that the associated volume is preserved by the flow.  The volume is said to be computed by the Liouville measure.",0.25,local,pick the best possible answer: what is the liouville density? from the following choices.,1328669194
+1044,Identify the correct statement: What is the significance of regularization in terms of renormalization problems in physics? carefully.,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a concept that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a framework below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a framework under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a structure below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.
+
+One of the most cited works in this area examines how experts (PhD students in physics) and novices (undergraduate students that completed one semester of mechanics) categorize and represent physics problems. They found that novices sort problems into categories based upon surface features (e.g., keywords in the problem statement or visual configurations of the objects depicted). Experts, however, categorize problems based upon their deep structures (i.e., the main physics principle used to solve the problem).Chi et al. 1981",0.6,local,identify the correct statement: what is the significance of regularization in terms of renormalization problems in physics? carefully.,2630988558
+1045,Determine the correct option: What did Arthur Eddington discover about two of Einstein's types of gravitational waves? among the listed options.,"Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could only be made to propagate at the speed of gravity by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of sound by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could not be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could only be made to propagate at the speed of light by choosing appropriate coordinates.",C,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.0,live_api,determine the correct option: what did arthur eddington discover about two of einstein's types of gravitational waves? among the listed options.,235421175
+1046,"Which of the following is correct? Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.","MOND is a concept that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a principle that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a framework that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a framework that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"which of the following is correct? which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.",2558558155
+1047,Determine the correct option: What is the purpose of obtaining surgical resection specimens? carefully.,"To remove an entire diseased area or organ for definitive surgical treatment of a disease, with pathological analysis of the specimen used to confirm the diagnosis.",To perform visual and microscopic tests on tissue samples using automated analysers and cultures.,To work in close collaboration with medical technologists and hospital administrations.,To administer a variety of tests of the biophysical properties of tissue samples.,To obtain bodily fluids such as blood and urine for laboratory analysis of disease diagnosis.,A,No match found.,0.0,live_api,determine the correct option: what is the purpose of obtaining surgical resection specimens? carefully.,4076106737
+1048,What is a trophic level in an ecological pyramid?,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecosystem.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecosystem.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""
+
+A keystone species is a species that is connected to a disproportionately large number of other species in the food-web. Keystone species have lower levels of biomass in the trophic pyramid relative to the importance of their role. The many connections that a keystone species holds means that it maintains the organization and structure of entire communities. The loss of a keystone species results in a range of dramatic cascading effects (termed trophic cascades) that alters trophic dynamics, other food web connections, and can cause the extinction of other species. The term keystone species was coined by Robert Paine in 1969 and is a reference to the keystone architectural feature as the removal of a keystone species can result in a community collapse just as the removal of the keystone in an arch can result in the arch's loss of stability.
+Sea otters (Enhydra lutris) are commonly cited as an example because they limit the density of sea urchins that feed on kelp. If sea otters are removed from the system, the urchins graze until the kelp beds disappear, and this has a dramatic effect on community structure.",1.0,local,what is a trophic level in an ecological pyramid?,2490521800
+1049,Identify the correct statement: What is a planetary framework? among the listed options.,A framework of planets that are all located in the same solar framework.,A framework of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star mechanism.,A framework of planets that are all located in the same galaxy.,A framework of planets that are all made of gas.,C,"In August 2019, the ESA and the Australian Space Agency signed a joint statement of intent ""to explore deeper cooperation and identify projects in a range of areas including deep space, communications, navigation, remote asset management, data analytics and mission support."" Details of the cooperation were laid out in a framework agreement signed by the two entities.",0.375,local,identify the correct statement: what is a planetary framework? among the listed options.,974994833
+1050,Determine the correct option: Which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? from the following choices.,Planetary frameworks cannot be categorized based on their orbital dynamics.,"Planetary structures can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the structure.",Planetary mechanisms can only be categorized as resonant or non-resonant-interacting.,"Planetary mechanisms can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary frameworks can only be categorized as hierarchical or non-hierarchical.,D,"The relationship between science and religion involves discussions that interconnect the study of the natural world, history, philosophy, and theology. Even though the ancient and medieval worlds did not have conceptions resembling the modern understandings of ""science"" or of ""religion"", certain elements of modern ideas on the subject recur throughout history. The pair-structured phrases ""religion and science"" and ""science and religion"" first emerged in the literature during  the 19th century. This coincided with the refining of ""science"" (from the studies of ""natural philosophy"") and of ""religion"" as distinct concepts in the preceding few centuries—partly due to professionalization of the sciences, the Protestant Reformation, colonization, and globalization. Since then the relationship between science and religion has been characterized in terms of ""conflict"", ""harmony"", ""complexity"", and ""mutual independence"", among others.
+Both science and religion are complex social and cultural en",0.0,live_api,determine the correct option: which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? from the following choices.,3073652691
+1051,Which of the following is correct? What is the reason for recycling rare metals according to the United Nations?,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will minimize in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Multiple methods have been proposed for the recycling of CRT glass. The methods involve thermal, mechanical and chemical processes. All proposed methods remove the lead oxide content from the glass. Some companies operated furnaces to separate the lead from the glass. A coalition called the Recytube project was once formed by several European companies to devise a method to recycle CRTs. The phosphors used in CRTs often contain rare earth metals. A CRT contains about 7 grams of phosphor.
+
+In certain parts of the world, nations in the form of ancient republics, monarchies or tribal oligarchies emerged. These nations were often united by common linguistic, religious or family ties. Moreover, expansion of these nations often occurred by the conquest of neighbouring tribes or nations. Consequently, various classes of royalty, nobility, various commoners and slaves emerged. Accordingly, the systems of tribal arbitration were submerged into a more unified system of justice which formalized the relation between the different ""social classes"" rather than ""tribes"". The earliest and most famous example is Code of Hammurabi which set the different punishment and compensation, according to the different class or group of victims and perpetrators. The Old Testament permits capital punishment for murder, kidnapping, witchcraft, violation of the Sabbath, blasphemy, and a number of sexual crimes, although evidence suggests that executions were very rare.
+
+United Nations 
+Baháʼu'lláh wrote of the need for world government in this age of humanity's collective life. Because of this emphasis the international Baháʼí community has chosen to support efforts of improving international relations through organizations such as the League of Nations and the United Nations, with some reservations about the present structure and constitution of the UN. The Baháʼí International Community is an agency under the direction of the Universal House of Justice in Haifa, and has consultative status with the following organizations:
+ United Nations Children's Fund (UNICEF)
+ United Nations Development Fund for Women (UNIFEM)
+ United Nations Economic and Social Council (ECOSOC)
+ United Nations Environment Programme (UNEP)
+ World Health Organization (WHO)",0.8,local,which of the following is correct? what is the reason for recycling rare metals according to the united nations?,942364343
+1052,Pick the best possible answer: What is a planetary structure? based on the given context.,A structure of planets that are all located in the same solar structure.,A mechanism of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star framework.,A structure of planets that are all located in the same galaxy.,A mechanism of planets that are all made of gas.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+It is not possible in general to unambiguously define what is the minimal number of symbols required to describe a given string (given a specific description mechanism). In this context, the terms string and number may be used interchangeably, since a number is actually a string of symbols, e.g. an English word (like the word ""eleven"" used in the paradox) while, on the other hand, it is possible to refer to any word with a number, e.g. by the number of its position in a given dictionary or by suitable encoding. Some long strings can be described exactly using fewer symbols than those required by their full representation, as is often achieved using data compression. The complexity of a given string is then defined as the minimal length that a description requires in order to (unambiguously) refer to the full representation of that string.",0.6666666666666666,local,pick the best possible answer: what is a planetary structure? based on the given context.,3554693929
+1053,Choose the correct answer: What is the effect generated by a spinning superconductor? from the following choices.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,choose the correct answer: what is the effect generated by a spinning superconductor? from the following choices.,1043144994
+1054,Select the most accurate option: What is the metallicity of Kapteyn's star estimated to be? based on the given context.,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.",0.38461538461538464,local,select the most accurate option: what is the metallicity of kapteyn's star estimated to be? based on the given context.,1530978509
+1055,Identify the correct statement: What is the reason for the stochastic nature of all observed resistance-switching processes? from the following choices.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"The tragedy of the commons is the concept that, in a system where individuals benefit from the use of a shared resource while the cost of that use is shared by all users, it is rational for individuals to overuse the resource, even though collectively this will likely lead to the depletion of the resource. The concept has been widely discussed and criticized in economics, ecology, and other sciences.
+The metaphorical term is the title of a 1968 essay by ecologist Garrett Hardin. Versions of this concept extend back to classical antiquity, being discussed by Aristotle. The principal concern of Hardin's essay was overpopulation of the planet. To prevent the inevitable tragedy (he argued) it was necessary to reject the principle (supposedly enshrined in the Universal Declaration of Human Rights) according to which every family has a right to choose the number of its offspring, and to replace it by ""mutual coercion, mutually agreed upon"".
+Some scholars have argued that over-exploitation of",0.07692307692307693,live_api,identify the correct statement: what is the reason for the stochastic nature of all observed resistance-switching processes? from the following choices.,3421473894
+1056,Identify the correct statement: What is the proper distance for a redshift of 8.2? from the following choices.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+Sheol
+Sheol, in the Hebrew Bible, is a place of darkness (Job 10:21–22) to which all the dead go—both the righteous and the unrighteous—regardless of the moral choices made in life (Genesis 35:37; Book of Ezekiel 32; Isaiah 16; Job 30:23), a place of stillness (Psalm 88:13, 94:17; Ecclesiastes 9:10), at the longest possible distance from Heaven (Job 11:8; Amos 9:2; Psalm 139:8).",0.6,local,identify the correct statement: what is the proper distance for a redshift of 8.2? from the following choices.,3695921214
+1057,Choose the correct answer: What is the reason for the stochastic nature of all observed resistance-switching processes? among the listed options.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"Systems biology is the computational and mathematical analysis and modeling of complex biological systems. It is a biology-based interdisciplinary field of study that focuses on complex interactions within biological systems, using a holistic approach (holism instead of the more traditional reductionism) to biological research. This multifaceted research domain necessitates the collaborative efforts of chemists, biologists, mathematicians, physicists, and engineers to decipher the biology of intricate living systems by merging various quantitative molecular measurements with carefully constructed mathematical models. It represents a comprehensive method for comprehending the complex relationships within biological systems. In contrast to conventional biological studies that typically center on isolated elements, systems biology seeks to combine different biological data to create models that illustrate and elucidate the dynamic interactions within a system. This methodology is essentia",0.0,live_api,choose the correct answer: what is the reason for the stochastic nature of all observed resistance-switching processes? among the listed options.,2607173704
+1058,Pick the best possible answer: What is the Optical Signal-to-Noise Ratio (OSNR)? among the listed options.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in frameworks where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in mechanisms where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.3333333333333333,local,pick the best possible answer: what is the optical signal-to-noise ratio (osnr)? among the listed options.,3600788092
+1059,Which of the following is correct? What is the Minkowski diagram used for? carefully.,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"Convex hulls of Minkowski sums 
+Minkowski addition behaves well with respect to the operation of taking convex hulls, as shown by the following proposition:
+
+Glasses' Abbe numbers, along with their mean refractive indices, are used in the calculation of the required refractive powers of the elements of achromatic lenses in order to cancel chromatic aberration to first order. These two parameters, which enter into the equations for the design of achromatic doublets, are exactly what is plotted on an Abbe diagram.
+
+By calculation one can confirm the following properties of the pole-polar relation of the ellipse:
+ For a point (pole) on the ellipse, the polar is the tangent at this point (see diagram: 
+ For a pole  outside the ellipse, the intersection points of its polar with the ellipse are the tangency points of the two tangents passing  (see diagram: 
+ For a point within the ellipse, the polar has no point with the ellipse in common (see diagram:",0.7142857142857143,local,which of the following is correct? what is the minkowski diagram used for? carefully.,1840130997
+1060,Which of the following is correct? What is the Roche limit? carefully.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"The orbit of Adrastea lies inside Jupiter's synchronous orbit radius (as does Metis's), and as a result, tidal forces are slowly causing its orbit to decay so that it will one day impact Jupiter. If its density is similar to Amalthea's then its orbit would actually lie within the fluid Roche limit. However, since it is not breaking up, it must still lie outside its rigid Roche limit.
+
+The parenthesized limit on the right is independent of the  Its value turns out to be the logarithm of  to base . Thus, when the value of  is set  this limit is equal  and so one arrives at the following simple identity:
+
+The second is a Grignard reaction, elaborated by Hoffman-La Roche from the original synthesis of Inhoffen et al.  They are both symmetrical; the BASF synthesis is C20 + C20, and the Hoffman-La Roche synthesis is C19 + C2 + C19.",0.5,local,which of the following is correct? what is the roche limit? carefully.,2051956453
+1061,"Which of the following is correct? What is the reason behind the designation of Class L dwarfs, and what is their color and composition? from the following choices.","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"Closure properties
+The class of context-free languages is closed under the following operations. That is, if L and P are context-free languages, the following languages are context-free as well:
+the union  of L and P
+the reversal of L
+the concatenation  of L and P
+the Kleene star  of L
+the image  of L under a homomorphism 
+the image  of L under an inverse homomorphism 
+the circular shift of L (the language )
+the prefix closure of L (the set of all prefixes of strings from L)
+the quotient L/R of L by a regular language R
+
+The following terms refer to the components or aspects of a classical western cannon (c. 1850) as illustrated here. In what follows, the words near, close, and behind will refer to those parts towards the thick, closed end of the piece, and far, front, in front of, and before to the thinner, open end.
+
+The concept of Design by Contract is central to Eiffel. The contracts assert what must be true before a routine is executed (precondition) and what must hold to be true after the routine finishes (post-condition). Class Invariant contracts define what assertions must hold true both before and after any feature of a class is accessed (both routines and attributes). Moreover, contracts codify into executable code developer and designers assumptions about the operating environment of the features of a class or the class as a whole by means of the invariant.",0.3076923076923077,local,"which of the following is correct? what is the reason behind the designation of class l dwarfs, and what is their color and composition? from the following choices.",1286046325
+1062,Choose the correct answer: What is the Penrose process? based on the given context.,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Roger Penrose uses the word aeon to describe the period between successive and cyclic Big Bangs within the context of conformal cyclic cosmology.",0.625,local,choose the correct answer: what is the penrose process? based on the given context.,2941467377
+1063,Pick the best possible answer: What is the most popular explanation for the shower-curtain effect? among the listed options.,The pressure differential between the inside and outside of the shower,The lower in velocity resulting in an boost in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,pick the best possible answer: what is the most popular explanation for the shower-curtain effect? among the listed options.,778132947
+1064,Choose the correct answer: What is the Optical Signal-to-Noise Ratio (OSNR)? carefully.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in frameworks where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.4444444444444444,local,choose the correct answer: what is the optical signal-to-noise ratio (osnr)? carefully.,1545490128
+1065,Choose the correct answer: Who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism? carefully.,Maxwell,Einstein,Galileo,Faraday,Newton,A,"A scientific theory is an explanation of an aspect of the natural world that can be or that has been repeatedly tested and has corroborating evidence in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment. In circumstances not amenable to experimental testing, theories are evaluated through principles of abductive reasoning. Established scientific theories have withstood rigorous scrutiny and embody scientific knowledge.
+A scientific theory differs from a scientific fact: a fact is an observation, while a theory connects and explains multiple observations. Furthermore, a theory is expected to make predictions which could be confirmed or refuted with additional observations. Stephen Jay Gould wrote that: ""...facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are st",0.1111111111111111,live_api,choose the correct answer: who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism? carefully.,4246133212
+1066,Pick the best possible answer: What is the Minkowski diagram used for? based on the given context.,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"Addition, usually denoted with the plus sign +, is one of the four basic operations of arithmetic, the other three being subtraction, multiplication, and division. The addition of two whole numbers results in the total or sum of those values combined. For example, the adjacent image shows two columns of apples, one with three apples and the other with two apples, totaling to five apples. This observation is expressed as ""3 + 2 = 5"", which is read as  ""three plus two equals five"".
+Besides counting items, addition can also be defined and executed without referring to concrete objects, using abstractions called numbers instead, such as integers, real numbers, and complex numbers. Addition belongs to arithmetic, a branch of mathematics. In algebra, another area of mathematics, addition can also be performed on abstract objects such as vectors, matrices, and elements of additive groups.
+Addition has several important properties. It is commutative, meaning that the order of the numbers being",0.0,live_api,pick the best possible answer: what is the minkowski diagram used for? based on the given context.,788427054
+1067,Determine the correct option: What is spatial dispersion? among the listed options.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in mechanisms, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in structures, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in structures, commonly seen in optics and electronics.",D,"A dirty bomb or radiological dispersal device is a radiological weapon that combines radioactive material with conventional explosives. The purpose of the weapon is to contaminate the area around the dispersal agent/conventional explosion with radioactive material, serving primarily as an area denial device against civilians. It is not to be confused with a nuclear explosion, such as a fission bomb, which produces blast effects far in excess of what is achievable by the use of conventional explosives. Unlike the rain of radioactive material from a typical fission bomb, a dirty bomb's radiation can be dispersed only within a few hundred meters or a few miles of the explosion.
+Dirty bombs have never been used, only tested. They are designed to disperse radioactive material over a certain area. They act through the effects of radioactive contamination on the environment and related health effects of radiation poisoning in the affected populations. The containment and decontamination of vi",0.0,live_api,determine the correct option: what is spatial dispersion? among the listed options.,932608744
+1068,Identify the correct statement: What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? based on the given context.,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.
+
+During the quark epoch (shortly after the Big Bang), the electroweak force split into the electromagnetic and weak force. It is thought that the required temperature of 1015 K has not been seen widely throughout the universe since before the quark epoch, and currently the highest human-made temperature in thermal equilibrium is around  (from the Large Hadron Collider).
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.",0.5,local,identify the correct statement: what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? based on the given context.,3797711973
+1069,Pick the best possible answer: What is spontaneous symmetry breaking?,"Spontaneous symmetry breaking occurs when the action of a principle has no symmetry, but the vacuum state has a symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, and the vacuum state also has the same symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has no symmetry, and the vacuum state also has no symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.",E,"The above spontaneous symmetry breaking makes the  and  bosons coalesce into two different physical bosons with different masses – the  boson, and the photon (),
+
+In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+Before electroweak symmetry breaking 
+The Lagrangian for the electroweak interactions is divided into four parts before electroweak symmetry breaking manifests,",0.42857142857142855,local,pick the best possible answer: what is spontaneous symmetry breaking?,1739119155
+1070,Pick the best possible answer: What is the Erlangen program?,"The Erlangen program is a procedure of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on group principle and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+Call-in procedure
+Throughout the program, listeners were encouraged to dial the toll-free telephone number, 1-888-CAR-TALK (1-888-227-8255), which connected to a 24-hour answering service. Although the approximately 2,000 queries received each week were screened by the Car Talk staff, the questions were unknown to the Magliozzis in advance as ""that would entail researching the right answer, which is what? ... Work.""
+
+In 2021, the Student Council of the University of Erlangen–Nuremberg changed the name of their Süd-Campus into Rommel-Campus, emphasising that the city of Erlangen stands behind the name and the university needs to do the same. The university's branch of the Education and Science Workers' Union describes the decision as problematic considering Rommel's history of supporting the Nazi regime.",0.5,local,pick the best possible answer: what is the erlangen program?,118182682
+1071,Identify the correct statement: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? among the listed options.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,identify the correct statement: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? among the listed options.,2454712411
+1072,Which of the following is correct? What is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Other notable spiral galaxies in Canes Venatici are the Sunflower Galaxy (M63, NGC 5055), M94 (NGC 4736), and M106 (NGC 4258).
+ M63, the Sunflower Galaxy, was named for its appearance in large amateur telescopes. It is a spiral galaxy with an integrated magnitude of 9.0.
+ M94 (NGC 4736) is a small face-on spiral galaxy with approximate magnitude 8.0, about 15 million light-years from Earth.
+ NGC 4631 is a barred spiral galaxy, which is one of the largest and brightest edge-on galaxies in the sky.
+ M3 (NGC 5272) is a globular cluster 32,000 light-years from Earth. It is 18′ in diameter, and at magnitude 6.3 is bright enough to be seen with binoculars. It can even be seen with the naked eye under particularly dark skies.
+ M94, also cataloged as NGC 4736, is a face-on spiral galaxy 15 million light-years from Earth. It has very tight spiral arms and a bright core. The outskirts of the galaxy are incredibly luminous in the ultraviolet because of a ring of new stars surrounding the core 7,000 light-years in diameter. Though astronomers are not sure what has caused this ring of new stars, some hypothesize that it is from shock waves caused by a bar that is thus far invisible.
+
+Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.
+
+The term  or  as applied to an explosive, refers to its ability to do work. In practice it is defined as the explosive's ability to accomplish what is intended in the way of energy delivery (i.e., fragment projection, air blast, high-velocity jet, underwater shock and bubble energy, etc.). Explosive power or performance is evaluated by a tailored series of tests to assess the material for its intended use. Of the tests listed below, cylinder expansion and air-blast tests are common to most testing programs, and the others support specific applications.
+ Cylinder expansion test. A standard amount of explosive is loaded into a long hollow cylinder, usually of copper, and detonated at one end. Data is collected concerning the rate of radial expansion of the cylinder and the maximum cylinder wall velocity. This also establishes the Gurney energy, or 2E.
+ Cylinder fragmentation. A standard steel cylinder is loaded with explosives and detonated in a sawdust pit. The fragments are collected and the size distribution analyzed.
+ Detonation pressure (Chapman–Jouguet condition). Detonation pressure data are derived from measurements of shock waves transmitted into water by the detonation of cylindrical explosive charges of a standard size.
+ Determination of critical diameter. This test establishes the minimum physical size a charge of a specific explosive must be to sustain its own detonation wave. The procedure involves the detonation of a series of charges of different diameters until difficulty in detonation wave propagation is observed.
+ Massive-diameter detonation velocity. Detonation velocity is dependent on loading density (c), charge diameter, and grain size. The hydrodynamic theory of detonation used in predicting explosive phenomena does not include the diameter of the charge, and therefore a detonation velocity, for a massive diameter. This procedure requires the firing of a series of charges of the same density and physical structure but different diameters and the extrapolation of the resulting detonation velocities to predict the detonation velocity of a charge of a massive diameter.
+ Pressure versus scaled distance. A charge of a specific size is detonated, and its pressure effects are measured at a standard distance. The values obtained are compared with those for TNT.
+ Impulse versus scaled distance. A charge of a specific size is detonated, and its impulse (the area under the pressure-time curve) is measured as a function of distance. The results are tabulated and expressed as TNT equivalents.
+ Relative bubble energy (RBE). A 5 to 50 kg charge is detonated in water, and piezoelectric gauges measure peak pressure, time constant, impulse, and energy.
+The RBE may be defined as Kx 3
+RBE = Ks
+where K = the bubble expansion period for an experimental (x) or a standard (s) charge.",0.6153846153846154,local,which of the following is correct? what is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,1007397250
+1073,Determine the correct option: What is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.
+
+In the 2nd century CE, Ptolemy estimated the mean distance of the Sun as  times Earth's radius. To determine this value, Ptolemy started by measuring the Moon's parallax, finding what amounted to a horizontal lunar parallax of 1° 26′, which was much too large. He then derived a maximum lunar distance of  Earth radii. Because of cancelling errors in his parallax figure, his theory of the Moon's orbit, and other factors, this figure was approximately correct.van Helden 1985, pp. 16–19.Ptolemy's Almagest, translated and annotated by G. J. Toomer, London: Duckworth, 1984, p. 251. . He then measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon at the Moon's greatest distance, and from records of lunar eclipses, he estimated this apparent diameter, as well as the apparent diameter of the shadow cone of Earth traversed by the Moon during a lunar eclipse. Given these data, the distance of the Sun from Earth can be trigonometrically computed to be  Earth radii. This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure. Although Ptolemy's procedure is theoretically workable, it is very sensitive to small changes in the data, so much so that changing a measurement by a few per cent can make the solar distance infinite.",0.5384615384615384,local,determine the correct option: what is the isophotal diameter used for in measuring a galaxy's size? among the listed options.,2993010581
+1074,Identify the correct statement: What is the relationship between the Wigner function and the density matrix operator? carefully.,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+The relationship between the angular momentum operator and the rotation operators is the same as the relationship between Lie algebras and Lie groups in mathematics. The close relationship between angular momentum and rotations is reflected in Noether's theorem that proves that angular momentum is conserved whenever the laws of physics are rotationally invariant.
+
+Wigner received a request from Arnold Sommerfeld to work at the University of Göttingen as an assistant to the great mathematician David Hilbert. This proved a disappointment, as the aged Hilbert's abilities were failing, and his interests had shifted to logic. Wigner nonetheless studied independently. He laid the foundation for the theory of symmetries in quantum mechanics and in 1927 introduced what is now known as the Wigner D-matrix. Wigner and Hermann Weyl were responsible for introducing group theory into quantum mechanics. The latter had written a standard text, Group Theory and Quantum Mechanics (1928), but it was not easy to understand, especially for younger physicists. Wigner's Group Theory and Its Application to the Quantum Mechanics of Atomic Spectra (1931) made group theory accessible to a wider audience.",0.5454545454545454,local,identify the correct statement: what is the relationship between the wigner function and the density matrix operator? carefully.,3041905614
+1075,Choose the correct answer: What is the Droste effect? among the listed options.,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"The General Dynamics (now Lockheed Martin) F-16 Fighting Falcon is an American single-engine supersonic multirole fourth-generation fighter aircraft developed by General Dynamics and produced by multiple companies, including General Dynamics until 1993 and Lockheed Martin until 2017. Designed as an air superiority day fighter, it evolved into a successful all-weather multirole aircraft with over 4,600 built since 1976.  Although the original versions are no longer in production, improved versions of the Lockheed Martin F-16V Viper family are being built and upgraded for export in a new production facility of Lockheed Martin. As of 2026, it is the world's most common fixed-wing aircraft in military service, with 2,102 from the F-16 family operational, comprising 15% of all active combat aircraft.
+The aircraft was first developed by General Dynamics in 1974. In 1993, General Dynamics sold its aircraft manufacturing business to Lockheed, which became part of Lockheed Martin after a 1995 m",0.0,live_api,choose the correct answer: what is the droste effect? among the listed options.,3182098590
+1076,Pick the best possible answer: What is X-ray pulsar-based navigation (XNAV)? among the listed options.,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,pick the best possible answer: what is x-ray pulsar-based navigation (xnav)? among the listed options.,1268730375
+1077,Select the most accurate option: What are the two main factors that cause resistance in a metal? based on the given context.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.",0.5,local,select the most accurate option: what are the two main factors that cause resistance in a metal? based on the given context.,245976443
+1078,Pick the best possible answer: What is the Ozma Problem? among the listed options.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"This article is a list of characters in the comic book series Fables and its spin-offs (including Jack of Fables, Cinderella: From Fabletown with Love, Fairest, 1001 Nights of Snowfall, and Peter & Max: A Fables Novel) published by Vertigo Comics.",0.0,live_api,pick the best possible answer: what is the ozma problem? among the listed options.,3004974325
+1079,What is the relevant type of coherence for the Young's double-slit interferometer?,Visibility,Coherence time,Spatial coherence,Coherence length,Diameter of the coherence area (Ac),E,"If waves are emitted from an extended source, this can lead to incoherence in the transversal direction. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherence length. In the case of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting pattern on a screen would look like two single-slit diffraction patterns.
+
+The Mach–Zehnder interferometer can be seen as a simplified version of the double-slit experiment. Instead of propagating through free space after the two slits, and hitting any position in an extended screen, in the interferometer the photons can only propagate via two paths, and hit two discrete photodetectors. This makes it possible to describe it via simple linear algebra in dimension 2, rather than differential equations.
+
+Computer simulations 
+ Java demonstration of Young's double slit interference
+ A simulation that runs in Mathematica Player, in which the number of quantum particles, the frequency of the particles, and the slit separation can be independently varied",0.75,local,what is the relevant type of coherence for the young's double-slit interferometer?,1001256554
+1080,Choose the correct answer: What is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.4166666666666667,local,choose the correct answer: what is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,3527141241
+1081,Pick the best possible answer: Which of the following statements accurately describes the origin and significance of the triskeles symbol? carefully.,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,"BDSM is a variety of often erotic practices or roleplaying involving bondage, discipline, dominance and submission, sadomasochism, and other related interpersonal dynamics. Given the wide range of practices, some of which may be engaged in by people who do not consider themselves to be practising BDSM, inclusion in the BDSM community or subculture often is said to depend on self-identification and shared experience.
+The initialism BDSM is first recorded in a Usenet post from 1991, and is interpreted as a combination of the abbreviations B/D (Bondage and Discipline), D/s (Dominance and submission), and S/M (Sadism and Masochism). BDSM is used as a catch-all phrase covering a wide range of activities, forms of interpersonal relationships, and distinct subcultures. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, body modification enthusiasts, animal roleplayers, rubber fetishists, and others.
+Activit",0.07142857142857142,live_api,pick the best possible answer: which of the following statements accurately describes the origin and significance of the triskeles symbol? carefully.,1753179620
+1082,Select the most accurate option: What is the reason for the sun appearing slightly yellowish when viewed from Earth? among the listed options.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,"China has been the source of many innovations, scientific discoveries and inventions. This includes the Four Great Inventions: papermaking, the compass, gunpowder, and early printing (both woodblock and movable type). The list below contains these and other inventions in ancient and modern China attested by archaeological or historical evidence, including prehistoric inventions of Neolithic and early Bronze Age China.
+The historical region now known as China experienced a history involving mechanics, hydraulics and mathematics applied to horology, metallurgy, astronomy, agriculture, engineering, music theory, craftsmanship, naval architecture and warfare. Use of the plow during the Neolithic period Longshan culture (c. 3000 – c. 2000 BC) allowed for high agricultural production yields and rise of Chinese civilization during the Shang dynasty (c. 1600 – c. 1050 BC). Later inventions such as the multiple-tube seed drill and the heavy moldboard iron plow enabled China to sustain a much la",0.0,live_api,select the most accurate option: what is the reason for the sun appearing slightly yellowish when viewed from earth? among the listed options.,4214497304
+1083,Which of the following is correct? What is the main focus of the Environmental Science Center at Qatar University? carefully.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"20th century
+Philanthropist John D. Rockefeller founded what is now Rockefeller University in 1901, between 63rd and 64th Streets on the river side of York Avenue, overlooking the river. The university is a research university for doctoral and post-doctoral scholars, primarily in the fields of medicine and biological science. North of it is one of the major medical centers in the city, NewYork Presbyterian / Weill Cornell Medical Center, which is associated with the medical schools of both Columbia University and Cornell University. Although it can trace its history back to 1771, the center on York Avenue, much of which overlooks the river, was built in 1932.Eldredge & Horenstein (2014), pp.89–90
+
+Cloning Fact Sheet  from Human Genome Project Information website.
+ 'Cloning' Freeview video by the Vega Science Trust and the BBC/OU
+ Cloning in Focus, an accessible and comprehensive look at cloning research from the University of Utah's Genetic Science Learning Center
+ Click and Clone. Try it yourself in the virtual mouse cloning laboratory, from the University of Utah's Genetic Science Learning Center
+ ""Cloning Addendum: A statement on the cloning report issues by the President's Council on Bioethics"" . National Review, 15 July 2002 8:45 am
+
+Education
+Damascus is the main center of education in Syria. It is home to Damascus University, which is the oldest and largest university in Syria. After the enactment of legislation allowing private higher institutions, several new universities were established in the city and the surrounding area, including:
+ Syrian Virtual University
+ International University for Science and Technology
+ Syrian Private University
+ Arab International University
+ University of Kalamoon
+ Yarmouk Private University
+ Wadi International University
+ Al-Jazeera University
+ European University Damascus",0.5454545454545454,local,which of the following is correct? what is the main focus of the environmental science center at qatar university? carefully.,56121663
+1084,What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants?,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+Membranes
+Cholesterol is present in varying degrees in all animal cell membranes but is absent in prokaryotes. It is required to build and maintain membranes and modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group of each cholesterol molecule interacts with water molecules surrounding the membrane, as do the polar heads of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty-acid chain of the other lipids. Through the interaction with the phospholipid fatty-acid chains, cholesterol increases membrane packing, which both alters membrane fluidity and maintains membrane integrity so that animal cells do not need to build cell walls (like plants and most bacteria). The membrane remains stable and durable without being rigid, allowing animal cells to change shape and animals to move.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.5555555555555556,local,what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants?,97407997
+1085,Identify the correct statement: What is the significance of regularization in terms of renormalization problems in physics? based on the given context.,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a concept that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a structure below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a framework under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a structure below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the most cited works in this area examines how experts (PhD students in physics) and novices (undergraduate students that completed one semester of mechanics) categorize and represent physics problems. They found that novices sort problems into categories based upon surface features (e.g., keywords in the problem statement or visual configurations of the objects depicted). Experts, however, categorize problems based upon their deep structures (i.e., the main physics principle used to solve the problem).Chi et al. 1981
+
+One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.",0.5833333333333334,local,identify the correct statement: what is the significance of regularization in terms of renormalization problems in physics? based on the given context.,752816100
+1086,Choose the correct answer: What is the most popular explanation for the shower-curtain effect? carefully.,The pressure differential between the inside and outside of the shower,The reduce in velocity resulting in an enhance in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"Father Knows Best is an American sitcom starring Robert Young, Jane Wyatt, Elinor Donahue, Billy Gray, and Lauren Chapin. The series, which began on radio in 1949, aired as a television show for six seasons and 203 episodes. Created by Ed James, Father Knows Best follows the lives of the Andersons, a middle-class family living in the town of Springfield. The state in which Springfield is located is never specified, but it is generally accepted to be located in the Midwestern United States.
+The television series debuted on CBS in October 1954. It ran for one season and was canceled by CBS but picked up by NBC, where it remained for three seasons. After cancellation by NBC in 1958, the series returned to CBS, where it aired until May 1960.",0.0,live_api,choose the correct answer: what is the most popular explanation for the shower-curtain effect? carefully.,125698074
+1087,Identify the correct statement: What is the Ozma Problem? among the listed options.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.375,local,identify the correct statement: what is the ozma problem? among the listed options.,1353297821
+1088,"Identify the correct statement: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? among the listed options.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"identify the correct statement: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? among the listed options.",1413823430
+1089,Choose the correct answer: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? carefully.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is key for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is key for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,choose the correct answer: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? carefully.,306921432
+1090,Which of the following is correct? What is the isophotal diameter used for in measuring a galaxy's size? carefully.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Other notable spiral galaxies in Canes Venatici are the Sunflower Galaxy (M63, NGC 5055), M94 (NGC 4736), and M106 (NGC 4258).
+ M63, the Sunflower Galaxy, was named for its appearance in large amateur telescopes. It is a spiral galaxy with an integrated magnitude of 9.0.
+ M94 (NGC 4736) is a small face-on spiral galaxy with approximate magnitude 8.0, about 15 million light-years from Earth.
+ NGC 4631 is a barred spiral galaxy, which is one of the largest and brightest edge-on galaxies in the sky.
+ M3 (NGC 5272) is a globular cluster 32,000 light-years from Earth. It is 18′ in diameter, and at magnitude 6.3 is bright enough to be seen with binoculars. It can even be seen with the naked eye under particularly dark skies.
+ M94, also cataloged as NGC 4736, is a face-on spiral galaxy 15 million light-years from Earth. It has very tight spiral arms and a bright core. The outskirts of the galaxy are incredibly luminous in the ultraviolet because of a ring of new stars surrounding the core 7,000 light-years in diameter. Though astronomers are not sure what has caused this ring of new stars, some hypothesize that it is from shock waves caused by a bar that is thus far invisible.
+
+Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.
+
+In the 2nd century CE, Ptolemy estimated the mean distance of the Sun as  times Earth's radius. To determine this value, Ptolemy started by measuring the Moon's parallax, finding what amounted to a horizontal lunar parallax of 1° 26′, which was much too large. He then derived a maximum lunar distance of  Earth radii. Because of cancelling errors in his parallax figure, his theory of the Moon's orbit, and other factors, this figure was approximately correct.van Helden 1985, pp. 16–19.Ptolemy's Almagest, translated and annotated by G. J. Toomer, London: Duckworth, 1984, p. 251. . He then measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon at the Moon's greatest distance, and from records of lunar eclipses, he estimated this apparent diameter, as well as the apparent diameter of the shadow cone of Earth traversed by the Moon during a lunar eclipse. Given these data, the distance of the Sun from Earth can be trigonometrically computed to be  Earth radii. This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure. Although Ptolemy's procedure is theoretically workable, it is very sensitive to small changes in the data, so much so that changing a measurement by a few per cent can make the solar distance infinite.",0.6363636363636364,local,which of the following is correct? what is the isophotal diameter used for in measuring a galaxy's size? carefully.,2508154971
+1091,Determine the correct option: What is the distinction between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? among the listed options.,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,No match found.,0.0,live_api,determine the correct option: what is the distinction between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? among the listed options.,3902867968
+1092,"Pick the best possible answer: What are amorphous ferromagnetic metallic alloys, and what are their advantages? carefully.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,No match found.,0.0,live_api,"pick the best possible answer: what are amorphous ferromagnetic metallic alloys, and what are their advantages? carefully.",336859638
+1093,What is the reason that Newton's second law cannot be used to calculate the development of a physical system in quantum mechanics?,"The existence of particle spin, which is linear momentum that can be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that is always equal to zero.","The existence of particle spin, which is linear momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that can be described by the cumulative effect of point-like motions in space.",D,"While angular momentum total conservation can be understood separately from Newton's laws of motion as stemming from Noether's theorem in systems symmetric under rotations, it can also be understood simply as an efficient method of calculation of results that can also be otherwise arrived at directly from Newton's second law, together with laws governing the forces of nature (such as Newton's third law, Maxwell's equations and Lorentz force). Indeed, given initial conditions of position and velocity for every point, and the forces at such a condition, one may use Newton's second law to calculate the second derivative of position, and solving for this gives full information on the development of the physical system with time.Tenenbaum, M., & Pollard, H. (1985). Ordinary differential equations en elementary textbook for students of mathematics. Engineering and the Sciences. Note, however, that this is no longer true in quantum mechanics, due to the existence of particle spin, which is an angular momentum that cannot be described by the cumulative effect of point-like motions in space.
+
+Molecular dynamics (MD) use either quantum mechanics, molecular mechanics or a mixture of both to calculate forces which are then used to solve Newton's laws of motion to examine the time-dependent behavior of systems. The result of a molecular dynamics simulation is a trajectory that describes how the position and velocity of particles varies with time. The phase point of a system described by the positions and momenta of all its particles on a previous time point will determine the next phase point in time by integrating over Newton's laws of motion.
+
+Some basic principles generally accepted as part of the interpretation include the following:
+ Quantum mechanics is intrinsically indeterministic.
+ The correspondence principle: in the appropriate limit, quantum theory comes to resemble classical physics and reproduces the classical predictions.
+ The Born rule: the wave function of a system yields probabilities for the outcomes of measurements upon that system.
+ Complementarity: certain properties cannot be jointly defined for the same system at the same time. In order to talk about a specific property of a system, that system must be considered within the context of a specific laboratory arrangement. Observable quantities corresponding to mutually exclusive laboratory arrangements cannot be predicted together, but the consideration of multiple such mutually exclusive experiments is necessary to characterize a system.",0.9333333333333333,local,what is the reason that newton's second law cannot be used to calculate the development of a physical system in quantum mechanics?,3250617493
+1094,What is Hesse's principle of transfer in geometry?,Hesse's principle of transfer is a concept in biology that explains the transfer of genetic information from one generation to another.,Hesse's principle of transfer is a concept in chemistry that explains the transfer of electrons between atoms in a chemical reaction.,Hesse's principle of transfer is a concept in physics that explains the transfer of energy from one object to another.,Hesse's principle of transfer is a concept in economics that explains the transfer of wealth from one individual to another.,"Hesse's principle of transfer is a concept in geometry that states that if the points of the projective line P1 are depicted by a rational normal curve in Pn, then the group of the projective transformations of Pn that preserve the curve is isomorphic to the group of the projective transformations of P1.",E,"Complex conjugation is also employed in inversive geometry, a branch of geometry studying reflections more general than ones about a line. In the network analysis of electrical circuits, the complex conjugate is used in finding the equivalent impedance when the maximum power transfer theorem is looked for.
+
+Geometry 
+Alhazen explored what is now known as the Euclidean parallel postulate, the fifth postulate in Euclid's Elements, using a proof by contradiction,. and in effect introducing the concept of motion into geometry.: ""In effect, this method characterised parallel lines as lines always equidistant from one another and also introduced the concept of motion into geometry."" He formulated the Lambert quadrilateral, which Boris Abramovich Rozenfeld names the ""Ibn al-Haytham–Lambert quadrilateral"".. He was criticised by Omar Khayyam who pointed that Aristotle had condemned the use of motion in geometry.
+
+""Babbage principle""
+In Economy of Machinery was described what is now called the ""Babbage principle"". It pointed out commercial advantages available with more careful division of labour. As Babbage himself noted, it had already appeared in the work of Melchiorre Gioia in 1815. The term was introduced in 1974 by Harry Braverman. Related formulations are the ""principle of multiples"" of Philip Sargant Florence, and the ""balance of processes"".",0.8,local,what is hesse's principle of transfer in geometry?,4111478369
+1095,Pick the best possible answer: What is the gravitomagnetic interaction?,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general principle of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Legal scholar Jim Drennan, an expert on the court system at the Institute of Government at the University of North Carolina at Chapel Hill, told the Winston-Salem Journal in a 2007 interview that the ability to use this form of guilty plea as an option in courts had a far-reaching effect throughout the United States: ""We have lots of laws, but human interaction creates unique circumstances and the law has to adapt."" He added that the Supreme Court ""had to make a decision about what to do. One of the things the court has to do is figure out how to answer new questions, and that is what happened in this case.""
+
+This branch of mathematics deals with the long-term qualitative behavior of dynamical systems. Here, the focus is not on finding precise solutions to the equations defining the dynamical system (which is often hopeless), but rather to answer questions like ""Will the system settle down to a steady state in the long term, and if so, what are the possible attractors?"" or ""Does the long-term behavior of the system depend on its initial condition?""
+
+The first BBSes
+Early modems were generally either expensive or very simple devices using acoustic couplers to handle telephone operation. The user would pick up the phone, dial a number, then press the handset into rubber cups on the top of the modem. Disconnecting at the end of a call required the user to pick up the handset and return it to the phone. Examples of direct-connecting modems did exist, and these often allowed the host computer to send it commands to answer or hang up calls, but these were very expensive devices used by large banks and similar companies.",0.6666666666666666,local,pick the best possible answer: what is the gravitomagnetic interaction?,3126303814
+1096,Identify the correct statement: What is the propagation constant in sinusoidal waves? from the following choices.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"In the absence of obstacles, the Huygens's principle alone predicts wavefront propagation. When some of the secondary waves are blocked by an obstacle, the remainder will create both wavefront propagation in the unblocked direction and waves behind the obstacle which form the diffraction pattern.
+
+The central stage in the acoustical process is wave propagation. This falls within the domain of physical acoustics. In fluids, sound propagates primarily as a pressure wave. In solids, mechanical waves can take many forms including longitudinal waves, transverse waves and surface waves.
+
+If the permittivity and permeability of the medium is constant for different frequency EM waves, this is called a non-dispersive medium. In this case all EM wave frequencies would travel at the same velocity, and the waveshape stays constant as it travels. However in real matter  and  typically vary with frequency, this is called a dispersive medium. In dispersive media different spectral bands have different propagation characteristics, and an arbitrary wave changes shape as it travels through the medium.",0.3333333333333333,local,identify the correct statement: what is the propagation constant in sinusoidal waves? from the following choices.,1121748601
+1097,Which of the following is correct? What is the synapstor or synapse transistor? among the listed options.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term depression for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and inactivity-based forgetting.,E,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+Transistor amplifiers (or solid state amplifiers) are the most common type of amplifier in use today. A transistor is used as the active element. The gain of the amplifier is determined by the properties of the transistor itself as well as the circuit it is contained within.
+
+The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.5,local,which of the following is correct? what is the synapstor or synapse transistor? among the listed options.,10779678
+1098,Identify the correct statement: What is the Maxwell's Demon thought experiment? based on the given context.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an raise in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a lower in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an boost in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"A hallmark of Albert Einstein's career was his use of visualized thought experiments (German: Gedankenexperiment) as a fundamental tool for understanding physical issues and for elucidating his concepts to others. Einstein's thought experiments took diverse forms. In his youth, he mentally chased beams of light. For special relativity, he employed moving trains and flashes of lightning to explain his theory. For general relativity, he considered a person falling off a roof, accelerating elevators, blind beetles crawling on curved surfaces and the like. In his debates with Niels Bohr on the nature of reality, he proposed imaginary devices that attempted to show, at least in concept, how the Heisenberg uncertainty principle might be evaded. In a contribution to the literature on quantum mechanics, Einstein considered two particles briefly interacting and then flying apart so that their states are correlated, anticipating the phenomenon known as quantum entanglement.",0.18181818181818182,live_api,identify the correct statement: what is the maxwell's demon thought experiment? based on the given context.,3064484551
+1099,Pick the best possible answer: What was the aim of the Gravity Probe B (GP-B) mission? carefully.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,No match found.,0.0,live_api,pick the best possible answer: what was the aim of the gravity probe b (gp-b) mission? carefully.,73893815
+1100,Pick the best possible answer: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? based on the given context.,The atmosphere is a structure that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized frameworks and time-varying forcing from recurrent seasons.",The atmosphere is a framework that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic framework with no order or organization.,The atmosphere is a completely ordered mechanism with no chaos or randomness.,B,No match found.,0.0,live_api,pick the best possible answer: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? based on the given context.,2897798224
+1101,Which of the following is correct? What is the main factor that determines the occurrence of each type of supernova?,The star's distance from Earth,The star's age,The star's temperature,The star's luminosity,The progenitor star's metallicity,E,"Supernova 1987A was the closest supernova to occur since the invention of the telescope. SNR 0509-67.5 is the remnant of an unusually energetic Type Ia supernova from about 400 years ago.
+
+Chemical properties 
+Each element has a specific set of chemical properties as a consequence of the number of electrons present in the neutral atom, which is Z (the atomic number). The configuration of these electrons follows from the principles of quantum mechanics. The number of electrons in each element's electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. Hence, it is the atomic number alone that determines the chemical properties of an element; and it is for this reason that an element can be defined as consisting of any mixture of atoms with a given atomic number.
+
+A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model (or the SQL approximation of relational), which uses a table-based format.",0.6363636363636364,local,which of the following is correct? what is the main factor that determines the occurrence of each type of supernova?,766054485
+1102,Which of the following is correct? What is the Peierls bracket in canonical quantization? from the following choices.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization procedure.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization technique that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization technique.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization procedure.,C,"The Apocrypha section of the original 1611 King James Bible includes, in addition to the deuterocanonical books, the following three books, which were not included in the list of the canonical books by the Council of Trent:
+ 1 Esdras (Vulgate 3 Esdras)
+ 2 Esdras (Vulgate 4 Esdras)
+ Prayer of Manasseh",0.375,local,which of the following is correct? what is the peierls bracket in canonical quantization? from the following choices.,2565032060
+1103,What is the American Petroleum Institute (API) gravity?,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,"Prior to 1918, these five founding engineering societies:
+ American Institute of Electrical Engineers (AIEE, now IEEE)
+ American Society of Mechanical Engineers (ASME)
+ American Society of Civil Engineers (ASCE)
+ American Institute of Mining Engineers (AIME, now American Institute of Mining, Metallurgical, and Petroleum Engineers)
+ American Society for Testing and Materials (now ASTM International)
+had been members of the United Engineering Society (UES). At the behest of the AIEE, they invited the U.S. government Departments of War, Navy (combined in 1947 to become the Department of Defense or DOD) and CommerceANSI history- Retrieved 2011-09-27 to join in founding a national standards organization.",0.6,local,what is the american petroleum institute (api) gravity?,2732910669
+1104,Pick the best possible answer: What is organography?,Organography is the study of the stem and root of plants.,Organography is the scientific description of the structure and function of the organs of living things.,"Organography is the study of the development of organs from the ""growing points"" or apical meristems.",Organography is the study of the commonality of development between foliage leaves and floral leaves.,Organography is the study of the relationship between different organs and different functions in plants.,B,"This branch of mathematics deals with the long-term qualitative behavior of dynamical systems. Here, the focus is not on finding precise solutions to the equations defining the dynamical system (which is often hopeless), but rather to answer questions like ""Will the system settle down to a steady state in the long term, and if so, what are the possible attractors?"" or ""Does the long-term behavior of the system depend on its initial condition?""
+
+The first BBSes
+Early modems were generally either expensive or very simple devices using acoustic couplers to handle telephone operation. The user would pick up the phone, dial a number, then press the handset into rubber cups on the top of the modem. Disconnecting at the end of a call required the user to pick up the handset and return it to the phone. Examples of direct-connecting modems did exist, and these often allowed the host computer to send it commands to answer or hang up calls, but these were very expensive devices used by large banks and similar companies.
+
+Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.",0.8,local,pick the best possible answer: what is organography?,775621297
+1105,Pick the best possible answer: What is radiometric dating? based on the given context.,"Radiometric dating is a approach of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"Futures studies, futures research or futurology is the systematic, interdisciplinary and holistic study of social and technological advancement, and other environmental trends, often for the purpose of exploring how people may live and work in the future. Futures studies scholars make predictions of the future and aim at systematically exploring alternatives to the predictions. Futures studies are a branch of the social sciences and an extension to the field of history. Futures studies (colloquially called ""futures"" by many of the field's researchers) seeks to understand what is likely to continue and what could plausibly change.
+Unlike the physical sciences where a narrower, more specified system is studied, futurology concerns a much bigger and more complex world system. The methodology and knowledge are much less proven than in natural science and social sciences like sociology and economics. There is a debate as to whether this discipline is an art or science, and it is sometimes d",0.0,live_api,pick the best possible answer: what is radiometric dating? based on the given context.,3720098321
+1106,What is the purpose of obtaining surgical resection specimens?,"To remove an entire diseased area or organ for definitive surgical treatment of a disease, with pathological analysis of the specimen used to confirm the diagnosis.",To perform visual and microscopic tests on tissue samples using automated analysers and cultures.,To work in close collaboration with medical technologists and hospital administrations.,To administer a variety of tests of the biophysical properties of tissue samples.,To obtain bodily fluids such as blood and urine for laboratory analysis of disease diagnosis.,A,"Surgical 
+Surgical elimination of the blood vessels involved is the preferred curative treatment for many types of AVM. Surgery is performed by a neurosurgeon who temporarily removes part of the skull (craniotomy), separates the AVM from surrounding brain tissue, and resects the abnormal vessels. While surgery can result in an immediate, complete removal of the AVM, risks exist depending on the size and the location of the malformation. The AVM must be resected en bloc, for partial resection will likely cause severe hemorrhage. The preferred treatment of Spetzler-Martin grade 1 and 2 AVMs in young, healthy patients is surgical resection due to the relatively small risk of neurological damage compared to the high lifetime risk of hemorrhage. Grade 3 AVMs may or may not be amenable to surgery. Grade 4 and 5 AVMs are not usually surgically treated.
+
+A common method of grading cerebral AVMs is the Spetzler-Martin (SM) grade.  This system was designed to assess the patient's risk of neurological deficit after open surgical resection (surgical morbidity), based on characteristics of the AVM itself. Based on this system, AVMs may be classified as grades 1–5. This system was not intended to characterize risk of hemorrhage.
+ AVM size  Adjacent eloquent cortex  Draining veins < 3 cm = 1  Non-eloquent = 0  Superficial only = 0 3 – 6 cm = 2  Eloquent* = 1 Deep veins = 1 > 6 cm = 3
+
+Gender assessment and surgical treatment are the two main steps in intersex operations. ""The first treatments for clitoromegaly were simply resection of the clitoris. Later, it was understood that the clitoris glans and sensory input are important to facilitate orgasm"", stated Atilla. The clitoral glans' epithelium ""has high cutaneous sensitivity, which is important in sexual responses"", and it is because of this that ""recession clitoroplasty was later devised as an alternative, but reduction clitoroplasty is the method currently performed"".",0.4,local,what is the purpose of obtaining surgical resection specimens?,1439422831
+1107,"Choose the correct answer: What is a transient condensation cloud, also known as a Wilson cloud? based on the given context.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,No match found.,0.0,live_api,"choose the correct answer: what is a transient condensation cloud, also known as a wilson cloud? based on the given context.",3267272757
+1108,Pick the best possible answer: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? among the listed options.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,No match found.,0.0,live_api,pick the best possible answer: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? among the listed options.,1782667140
+1109,Determine the correct option: What is X-ray pulsar-based navigation (XNAV)? among the listed options.,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,determine the correct option: what is x-ray pulsar-based navigation (xnav)? among the listed options.,2489268604
+1110,Pick the best possible answer: What is the Josephson effect?,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.
+
+Simulators: Simulators enable electric guitars to mimic the sound of other instruments such as acoustic guitar, electric bass and sitar. Pick up simulators used on guitars with single-coil pick ups replicate the sound of guitars with humbucker pick ups, or vice versa. A de-fretter is a bass guitar effect that simulates the sound of a fretless bass. The effect uses an envelope-controlled filter and voltage-controlled amplifier to ""soften"" a note's attack both in volume and timbre.",0.5,local,pick the best possible answer: what is the josephson effect?,2166247223
+1111,Which of the following is correct? What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? carefully.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+Membranes
+Cholesterol is present in varying degrees in all animal cell membranes but is absent in prokaryotes. It is required to build and maintain membranes and modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group of each cholesterol molecule interacts with water molecules surrounding the membrane, as do the polar heads of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty-acid chain of the other lipids. Through the interaction with the phospholipid fatty-acid chains, cholesterol increases membrane packing, which both alters membrane fluidity and maintains membrane integrity so that animal cells do not need to build cell walls (like plants and most bacteria). The membrane remains stable and durable without being rigid, allowing animal cells to change shape and animals to move.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.46153846153846156,local,which of the following is correct? what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? carefully.,1114660550
+1112,Which of the following is correct? What are the Navier-Stokes equations? based on the given context.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.4444444444444444,local,which of the following is correct? what are the navier-stokes equations? based on the given context.,2118263138
+1113,Pick the best possible answer: What is the decay energy for the free neutron decay process? among the listed options.,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+One curiosity is why alpha particles, helium nuclei, should be preferentially emitted as opposed to other particles like a single proton or neutron or other atomic nuclei.These other decay modes, while possible, are extremely rare compared to alpha decay. Part of the reason is the high binding energy of the alpha particle, which means that its mass is less than the sum of the masses of two free protons and two free neutrons. This increases the disintegration energy. Computing the total disintegration energy given by the equation
+
+Bound-state β decay 
+A very small minority of free neutron decays (about four per million) are ""two-body decays"": the proton, electron and antineutrino are produced, but the electron fails to gain the 13.6 eV energy necessary to escape the proton, and therefore simply remains bound to it, as a neutral hydrogen atom.An Overview Of Neutron Decay  J. Byrne in Quark-Mixing, CKM Unitarity (H. Abele and D. Mund, 2002), see p.XV In this type of beta decay, in essence all of the neutron decay energy is carried off by the antineutrino.",0.5,local,pick the best possible answer: what is the decay energy for the free neutron decay process? among the listed options.,431470162
+1114,Which of the following is correct? Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect? from the following choices.,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.",0.4666666666666667,local,which of the following is correct? who was the first to determine the velocity of a star moving away from the earth using the doppler effect? from the following choices.,1623561503
+1115,Choose the correct answer: Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect? from the following choices.,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.",0.4375,local,choose the correct answer: who was the first to determine the velocity of a star moving away from the earth using the doppler effect? from the following choices.,4135933449
+1116,Identify the correct statement: What is the relationship between interstellar and cometary chemistry? from the following choices.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,"Interstellar destruction mechanisms 
+There are 113 total proposed reactions leading to the destruction of . Of these, 39 were tabulated in extensive tables of the chemistry among C, N and O compounds. A review of interstellar ammonia cites the following reactions as the principal dissociation mechanisms:",0.3,local,identify the correct statement: what is the relationship between interstellar and cometary chemistry? from the following choices.,1970415226
+1117,Select the most accurate option: What is water hammer? based on the given context.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing structures.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to boost the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"ChatGPT is a generative artificial intelligence chatbot developed by OpenAI. Originally released in November 2022, the product uses large language models—specifically generative pre-trained transformers (GPTs)—to generate text, speech, and images in response to user prompts. ChatGPT accelerated the AI boom, an ongoing period marked by rapid investment and public attention toward the field of artificial intelligence (AI). OpenAI operates the service on a freemium model. Users can interact with ChatGPT through text, audio, and image prompts.
+ChatGPT was quickly adopted, reaching 100 million monthly active users two months after its release and 900 million weekly active users in February 2026. It has been lauded for its potential to transform numerous professional fields, and has instigated public debate about the nature of creativity and the future of knowledge work.
+The chatbot has also been criticized for its limitations and potential for unethical use. It can generate plausible-soundi",0.0,live_api,select the most accurate option: what is water hammer? based on the given context.,2072785762
+1118,Pick the best possible answer: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,No match found.,0.0,live_api,pick the best possible answer: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,3516788784
+1119,"Pick the best possible answer: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"pick the best possible answer: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",1411842785
+1120,Pick the best possible answer: What is the reason for recycling rare metals according to the United Nations? from the following choices.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will reduce in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"This article lists direct English translations of common Latin phrases. Some of the phrases are themselves translations of Greek phrases.
+This list is a combination of the twenty page-by-page ""List of Latin phrases"" articles:",0.0,live_api,pick the best possible answer: what is the reason for recycling rare metals according to the united nations? from the following choices.,3119790816
+1121,Choose the correct answer: What is the role of methane in Fischer-Tropsch processes? from the following choices.,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,No match found.,0.0,live_api,choose the correct answer: what is the role of methane in fischer-tropsch processes? from the following choices.,180218352
+1122,What is the SI base unit of time and how is it defined?,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.",1.0,local,what is the si base unit of time and how is it defined?,41216025
+1123,Pick the best possible answer: What is the origin of the permanent moment in paramagnetism? based on the given context.,The permanent moment is generally due to the spin of unpaired electrons in atomic or molecular electron orbitals.,The permanent moment is due to the alignment of dipoles perpendicular to the applied field.,"The permanent moment is due to the torque provided on the magnetic moments by an applied field, which tries to align the dipoles perpendicular to the applied field.",The permanent moment is due to the quantum-mechanical properties of spin and angular momentum.,The permanent moment is due to the interaction of dipoles with one another and are randomly oriented in the absence of an external field due to thermal agitation.,A,"The permanent dipole moment  of an atom in a non-degenerate state (see Degenerate energy level) is given as the expectation (average) value of the dipole operator,
+
+1. Origin of operant behavior
+Skinner's answer to the first question was very much like Darwin's answer to the question of the origin of a 'new' bodily structure, namely, variation and selection. Similarly, the behavior of an individual varies from moment to moment; a variation that is followed by reinforcement is strengthened and becomes prominent in that individual's behavioral repertoire. Shaping was Skinner's term for the gradual modification of behavior by the reinforcement of desired variations. Skinner believed that 'superstitious' behavior can arise when a response happens to be followed by reinforcement to which it is actually unrelated.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6363636363636364,local,pick the best possible answer: what is the origin of the permanent moment in paramagnetism? based on the given context.,559714055
+1124,Select the most accurate option: Which mathematical function is commonly used to characterize linear time-invariant frameworks? carefully.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,No match found.,0.0,live_api,select the most accurate option: which mathematical function is commonly used to characterize linear time-invariant frameworks? carefully.,129862489
+1125,Determine the correct option: What is the origin of the radio emission observed from supernova remnants? among the listed options.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,The following scientific events occurred in 2023.,0.0,live_api,determine the correct option: what is the origin of the radio emission observed from supernova remnants? among the listed options.,2957699867
+1126,Determine the correct option: What is the main focus of cryogenic and noble liquid detectors in dark matter experiments? carefully.,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.
+
+WIMP searches mostly use either cryogenic or noble liquid detector technologies. Cryogenic detectors, operating at temperatures below 100 mK, detect the heat produced when a particle hits an atom in a crystal absorber such as germanium. Experiments using this technology include SuperCDMS and EDELWEISS.",0.5384615384615384,local,determine the correct option: what is the main focus of cryogenic and noble liquid detectors in dark matter experiments? carefully.,3808114950
+1127,Choose the correct answer: What did Newton's manuscripts of the 1660s show? among the listed options.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,No match found.,0.0,live_api,choose the correct answer: what did newton's manuscripts of the 1660s show? among the listed options.,2700621970
+1128,"Choose the correct answer: Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields? carefully.","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.
+
+The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.",0.47368421052631576,local,"choose the correct answer: which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields? carefully.",4004770845
+1129,Determine the correct option: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? among the listed options.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is key for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is essential for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,determine the correct option: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? among the listed options.,1923660127
+1130,What is the information loss paradox in black holes?,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.
+
+Black holes have been portrayed in science fiction in a variety of ways. Even before the advent of the term itself, objects with characteristics of black holes appeared in stories such as the 1928 novel The Skylark of Space with its ""black Sun"" and the ""hole in space"" in the 1935 short story Starship Invincible. As black holes grew to public recognition in the 1960s and 1970s, they began to be featured in films as well as novels, such as Disney's The Black Hole. Black holes have also been used in works of the 21st century, such as Christopher Nolan's science fiction epic Interstellar.
+
+Stars have been observed to get torn apart by tidal forces in the immediate vicinity of supermassive black holes in galaxy nuclei, in what is known as a tidal disruption event (TDE). Some of the material from the disrupted star forms an accretion disk around the black hole, which emits observable electromagnetic radiation.",1.0,local,what is the information loss paradox in black holes?,491955539
+1131,Pick the best possible answer: What is the information loss paradox in black holes? among the listed options.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.",0.4166666666666667,local,pick the best possible answer: what is the information loss paradox in black holes? among the listed options.,22895031
+1132,Pick the best possible answer: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? from the following choices.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,pick the best possible answer: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? from the following choices.,1940686311
+1133,Select the most accurate option: Who was Giordano Bruno? among the listed options.,A German philosopher who supported the Keplerian concept that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic concept that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian framework that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican concept that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean concept that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Criticism of Christianity has a long history that stretches back to the initial formation of the religion in the Roman Empire. Critics have challenged Christian beliefs and teachings, as well as actions taken in the name of the faith, from the Crusades to modern terrorism. The arguments against Christianity include claims that it is a faith of violence, corruption, superstition, polytheism, homophobia, bigotry, pontification, abuses of women's rights, and sectarianism.
+In the early years of Christianity, the Neoplatonic philosopher Porphyry emerged as one of the major critics with his book Against the Christians, along with other writers like Celsus and Julian. Porphyry argued that Christianity was based on false prophecies that had not yet materialized. Following the adoption of Christianity by the Roman Empire, dissenting religious voices were gradually suppressed by both governmental and ecclesiastical authorities. Christianity has faced significant theological criticism from thinke",0.1,local,select the most accurate option: who was giordano bruno? among the listed options.,487401945
+1134,Choose the correct answer: What is accelerator-based light-ion fusion? carefully.,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This procedure is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This procedure is relatively difficult to implement and requires a complex structure of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This technique is relatively difficult to implement and requires a complex structure of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This procedure is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,The following scientific events occurred in 2023.,0.0,live_api,choose the correct answer: what is accelerator-based light-ion fusion? carefully.,1335033420
+1135,"Select the most accurate option: What is the reason behind the designation of Class L dwarfs, and what is their color and composition? carefully.","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"An asteroid is a minor planet—an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified comet—that orbits within the inner Solar System or is co-orbital with Jupiter (Trojan asteroids). Asteroids are rocky, metallic, or icy bodies with no atmosphere, and are broadly classified into C-type (carbonaceous), M-type (metallic), or S-type (silicaceous). The size and shape of asteroids vary significantly, ranging from small rubble piles under a kilometer across to Ceres, a dwarf planet almost 1000 km in diameter. A body is classified as a comet, not an asteroid, if it shows a coma (tail) when warmed by solar radiation, although recent observations suggest a continuum between these types of bodies.
+Of the roughly one million known asteroids, the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 astronomical units (AU) from the Sun, in a region known as the main asteroid belt. The total mass of all the asteroids",0.0,live_api,"select the most accurate option: what is the reason behind the designation of class l dwarfs, and what is their color and composition? carefully.",2311191486
+1136,What is X-ray pulsar-based navigation (XNAV)?,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,"A pulsar (pulsating star, on the model of quasar) is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles. This radiation can be observed only when a beam of emission is pointing toward Earth (similar to the way a lighthouse can be seen only when the light is pointed in the direction of an observer), and is responsible for the pulsed appearance of emission. Neutron stars are very dense and have short, regular rotational periods. This produces a very precise interval between pulses that ranges from milliseconds to seconds for an individual pulsar. Pulsars are one of the candidates for the source of ultra-high-energy cosmic rays (see also centrifugal mechanism of acceleration).
+Pulsars’ highly regular pulses make them very useful tools for astronomers. For example, observations of a pulsar in a binary neutron star system were used to indirectly confirm the existence of gravitational radiation. The first extrasolar planets were",0.16666666666666666,live_api,what is x-ray pulsar-based navigation (xnav)?,2724968770
+1137,Choose the correct answer: Which of the following is an accurate definition of dynamic scaling in self-similar mechanisms?,"Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar frameworks, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.3333333333333333,local,choose the correct answer: which of the following is an accurate definition of dynamic scaling in self-similar mechanisms?,3882632454
+1138,Pick the best possible answer: What is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field?,Blueshifting,Redshifting,Reddening,Whitening,Yellowing,C,"In magnetism and electromagnetism, magnetic field is a physical property of space that quantifies the magnetic influence at a given location. Magnetic fields deflect moving electric charges (including electric currents), apply torques on magnets to twist them in the direction of the magnetic field, and attract or repel magnets and magnetic material such as iron. In addition, a time-varying magnetic field induces electrical currents.
+Magnetic fields are created by magnetic materials and by moving electric charges (including electrical current). The latter is important in creating electromagnets: devices that precisely control magnetic fields by changing the current through the electromagnet. 
+Magnetic fields are used throughout modern science and technology. In electrical engineering and electromechanics it is important in the design and use of electric motors, generators, transformers, electromagnets, and inductors among many other devices. In material science, magnetic forces give inf",0.125,live_api,pick the best possible answer: what is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field?,1092386856
+1139,Which of the following is correct? What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI? based on the given context.,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,No match found.,0.0,live_api,which of the following is correct? what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri? based on the given context.,3478177553
+1140,Which of the following is correct? What is the variation between natural convection and forced convection? based on the given context.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,"Rainfall tends to be associated with Atlantic depressions or with convection. In summer, convection caused by solar surface heating sometimes forms shower clouds and a large proportion of rainfall comes from showers and thunderstorms at this time of year. The wettest months are November and December and on the highest parts of the moor the average annual total rainfall is over . This compares with less than  in the lower land to the east around the Exe Estuary, which is in the rain shadow of the moor. Due to the influence of the Gulf Stream snowfall is not common, though due to its high altitude it is more vulnerable to snowfall than surrounding regions.Webb 2006, p. 31
+
+The density of a material varies with temperature and pressure. This variation is typically small for solids and liquids but much greater for gases. Increasing the pressure on an object decreases the volume of the object and thus increases its density. Increasing the temperature of a substance while maintaining a constant pressure decreases its density by increasing its volume (with a few exceptions). In most fluids, heating the bottom of the fluid results in convection due to the decrease in the density of the heated fluid, which causes it to rise relative to denser unheated material.
+
+Climate 
+Along with the rest of South West England, Cheddar has a temperate climate which is generally wetter and milder than the rest of the country. The annual mean temperature is approximately . Seasonal temperature variation is less extreme than most of the United Kingdom because of the adjacent sea, which moderates temperature. The summer months of July and August are the warmest with mean daily maxima of approximately . In winter mean minimum temperatures of  are common. In the summer the Azores high-pressure system affects the south-west of England. Convective cloud sometimes forms inland, reducing the number of hours of sunshine; annual sunshine rates are slightly less than the regional average of 1,600 hours. Most of the rainfall in the south-west is caused by Atlantic depressions or by convection. Most of the rainfall in autumn and winter is caused by the Atlantic depressions, which are most active during those seasons. In summer, a large proportion of the rainfall is caused by sun heating the ground leading to convection and to showers and thunderstorms. Average rainfall is around . About 8–15 days of snowfall per year is typical. November to March have the highest mean wind speeds, and June to August have the lightest winds. The predominant wind direction is from the south-west.",0.2727272727272727,local,which of the following is correct? what is the variation between natural convection and forced convection? based on the given context.,1442091319
+1141,Pick the best possible answer: What is the variation between natural convection and forced convection? from the following choices.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,"Lepidoptera ( LEP-ih-DOP-tər-ə) or lepidopterans are an order of winged insects which include butterflies and moths. About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organisms, making it the second largest insect order (behind Coleoptera) with 126 families and 46 superfamilies, and one of the most widespread and widely recognizable insect orders in the world.
+Lepidopterans have several distinctive features, especially coloured scales that cover their bodies, large triangular wings, and a proboscis for drinking nectar. Almost all species have membranous wings. Mating and egg-laying are normally near or on host plants for the larvae. Butterflies and moths undergo complete metamorphosis. The larva is called a caterpillar; it has a cylindrical body with a well-developed head, chewing mouthparts, three pairs of legs and up to five pairs of prolegs. As it grows, it changes in appearance, going through a series of stages c",0.0,live_api,pick the best possible answer: what is the variation between natural convection and forced convection? from the following choices.,171401140
+1142,Which of the following statements is true about the categorization of planetary systems according to their orbital dynamics?,Planetary systems cannot be categorized based on their orbital dynamics.,"Planetary systems can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the system.",Planetary systems can only be categorized as resonant or non-resonant-interacting.,"Planetary systems can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary systems can only be categorized as hierarchical or non-hierarchical.,D,"Planetary systems
+Twelve exoplanet systems have been found in Aquarius as of 2013. Gliese 876, one of the nearest stars to Earth at a distance of 15 light-years, was the first red dwarf star to be found to possess a planetary system. It is orbited by four planets, including one terrestrial planet 6.6 times the mass of Earth. The planets vary in orbital period from 2 days to 124 days. 91 Aquarii is an orange giant star orbited by one planet, 91 Aquarii b. The planet's mass is 2.9 times the mass of Jupiter, and its orbital period is 182 days. Gliese 849 is a red dwarf star orbited by the first known long-period Jupiter-like planet, Gliese 849 b. The planet's mass is 0.99 times that of Jupiter and its orbital period is 1,852 days.
+
+Exoplanets are often members of planetary systems of multiple planets around a star. The planets interact with each other gravitationally and sometimes form resonant systems where the orbital periods of the planets are in integer ratios. The Kepler-223 system contains four planets in an 8:6:4:3 orbital resonance.
+
+In addition to carbon compounds, all currently known terrestrial life also requires water as a solvent. This has led to discussions about whether water is the only liquid capable of filling that role. The idea that an extraterrestrial life-form might be based on a solvent other than water has been taken seriously in recent scientific literature by the biochemist Steven Benner, and by the astrobiological committee chaired by John A. Baross.Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; The Limits of Organic Life in Planetary Systems; The National Academies Press, 2007; pages 69–79. Solvents discussed by the Baross committee include ammonia,Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; The Limits of Organic Life in Planetary Systems; The National Academies Press, 2007; p. 72. sulfuric acid,Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; The Limits of Organic Life in Planetary Systems; The National Academies Press, 2007; p. 73. formamide,Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; The Limits of Organic Life in Planetary Systems; The National Academies Press, 2007; p. 74. hydrocarbons, and (at temperatures much lower than Earth's) liquid nitrogen, or hydrogen in the form of a supercritical fluid.Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; The Limits of Organic Life in Planetary Systems; The National Academies Press, 2007; p. 75.",0.3333333333333333,local,which of the following statements is true about the categorization of planetary systems according to their orbital dynamics?,3238856737
+1143,Pick the best possible answer: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,No match found.,0.0,live_api,pick the best possible answer: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,1375719219
+1144,Determine the correct option: What is the result of the collapse of a cavitation bubble?,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a reduce in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp enhance in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+The process of bubble generation, and the subsequent growth and collapse of the cavitation bubbles, results in very high energy densities and in very high local temperatures and local pressures at the surface of the bubbles for a very short time.  The overall liquid medium environment, therefore, remains at ambient conditions.  When uncontrolled, cavitation is damaging; by controlling the flow of the cavitation, however, the power can be harnessed and non-destructive.  Controlled cavitation can be used to enhance chemical reactions or propagate certain unexpected reactions because free radicals are generated in the process due to disassociation of vapors trapped in the cavitating bubbles.",0.5714285714285714,local,determine the correct option: what is the result of the collapse of a cavitation bubble?,3291028024
+1145,"Determine the correct option: Who proposed the concept of ""maximal acceleration""? based on the given context.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Amphetamine is a central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy; it is also used to treat binge eating disorder in the form of lisdexamfetamine. Historically, it has been used to treat nasal congestion and depression. Amphetamine is also used as an athletic performance enhancer and cognitive enhancer, and recreationally as an aphrodisiac and euphoriant. It is a prescription drug in many countries, and unauthorized possession and distribution of amphetamine are often tightly controlled due to the significant health risks associated with recreational use.
+Amphetamine was discovered as a chemical in 1887 by Lazăr Edeleanu, and then as a drug in the late 1920s. It exists as two enantiomers: levoamphetamine and dextroamphetamine. The first amphetamine pharmaceutical was Benzedrine. Pharmaceutical amphetamine is prescribed as racemic amphetamine, Adderall, dextroamphetamine, or lisdexamfetamine. Amphetami",0.0,live_api,"determine the correct option: who proposed the concept of ""maximal acceleration""? based on the given context.",2547725687
+1146,What is the decay energy for the free neutron decay process?,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+Bound-state β decay 
+A very small minority of free neutron decays (about four per million) are ""two-body decays"": the proton, electron and antineutrino are produced, but the electron fails to gain the 13.6 eV energy necessary to escape the proton, and therefore simply remains bound to it, as a neutral hydrogen atom.An Overview Of Neutron Decay  J. Byrne in Quark-Mixing, CKM Unitarity (H. Abele and D. Mund, 2002), see p.XV In this type of beta decay, in essence all of the neutron decay energy is carried off by the antineutrino.
+
+The most common forms of radioactive decay are:
+ Alpha decay: this process is caused when the nucleus emits an alpha particle, which is a helium nucleus consisting of two protons and two neutrons. The result of the emission is a new element with a lower atomic number.
+ Beta decay (and electron capture): these processes are regulated by the weak force, and result from a transformation of a neutron into a proton, or a proton into a neutron. The neutron to proton transition is accompanied by the emission of an electron and an antineutrino, while proton to neutron transition (except in electron capture) causes the emission of a positron and a neutrino. The electron or positron emissions are called beta particles. Beta decay either increases or decreases the atomic number of the nucleus by one. Electron capture is more common than positron emission, because it requires less energy. In this type of decay, an electron is absorbed by the nucleus, rather than a positron emitted from the nucleus. A neutrino is still emitted in this process, and a proton changes to a neutron.
+ Gamma decay: this process results from a change in the energy level of the nucleus to a lower state, resulting in the emission of electromagnetic radiation. The excited state of a nucleus which results in gamma emission usually occurs following the emission of an alpha or a beta particle. Thus, gamma decay usually follows alpha or beta decay.",1.0,local,what is the decay energy for the free neutron decay process?,2942054383
+1147,Identify the correct statement: What is the Evans balance? based on the given context.,"The Evans balance is a structure used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a structure used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a mechanism used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a mechanism used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a structure used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is the evans balance? based on the given context.,2754782993
+1148,Identify the correct statement: What is the reason for the stochastic nature of all observed resistance-switching processes?,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"A memristor (; a portmanteau of memory resistor) is a non-linear two-terminal electrical component relating electric charge and magnetic flux linkage. It was described and named in 1971 by Leon Chua, completing a theoretical quartet of fundamental electrical components which also comprises the resistor, capacitor and inductor.
+Chua and Kang later generalized the concept to memristive systems. Such a system comprises a circuit, of multiple conventional components, which mimics key properties of the ideal memristor component and is also commonly referred to as a memristor. Several such memristor system technologies have been developed, notably ReRAM.
+The identification of memristive properties in electronic devices has attracted controversy. Experimentally, the ideal memristor has yet to be demonstrated.",0.0,live_api,identify the correct statement: what is the reason for the stochastic nature of all observed resistance-switching processes?,1178628533
+1149,Which of the following is correct? What is the definition of an improper rotation?,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+Isaac Newton's rotating bucket argument (also known as Newton's bucket) is a thought experiment that was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.  It is one of five arguments from the ""properties, causes, and effects"" of ""true motion and rest"" that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by ""absolute rotation"", and do not pretend to address the question of ""rotation relative to what?"" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime.
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.6666666666666666,local,which of the following is correct? what is the definition of an improper rotation?,2370471797
+1150,Pick the best possible answer: What is radiometric dating? among the listed options.,"Radiometric dating is a technique of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,No match found.,0.0,live_api,pick the best possible answer: what is radiometric dating? among the listed options.,1045132215
+1151,What was the aim of the Gravity Probe B (GP-B) mission?,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"The B-1 was first used in combat in support of operations in Iraq during Operation Desert Fox in December 1998, employing unguided GP weapons. B-1s have been subsequently used in Operation Allied Force (Kosovo) and, most notably, in Operation Enduring Freedom in Afghanistan and the 2003 invasion of Iraq. The B-1 has deployed an array of conventional weapons in war zones, most notably the GBU-31,  JDAM. In the first six months of Operation Enduring Freedom, eight B-1s dropped almost 40 percent of aerial ordnance, including some 3,900 JDAMs. JDAM munitions were heavily used by the B-1 over Iraq, notably on 7 April 2003 in an unsuccessful attempt to kill Saddam Hussein and his two sons. During Operation Enduring Freedom, the B-1 was able to raise its mission capable rate to 79%.
+
+After the inactivation of SAC and the establishment of the Air Combat Command (ACC) in 1992, the B-1 developed a greater conventional weapons capability. Part of this development was the start-up of the U.S. Air Force Weapons School B-1 Division.Scott, Ed. ""JDAM Course Ushers B-1 Students Into New Era"". Program Manager, 1 November 1999. Retrieved 14 August 2010. In 1994, two additional B-1 bomb wings were also created in the Air National Guard, with former fighter wings in the Kansas Air National Guard and the Georgia Air National Guard converting to the aircraft. By the mid-1990s, the B-1 could employ GP weapons as well as various CBUs. By the end of the 1990s, with the advent of the ""Block D"" upgrade, the B-1 boasted a full array of guided and unguided munitions.
+
+The B-1B was reassigned to Air Combat Command in 1992 and it was outfitted for conventional bombing, with its nuclear mission eliminated in 1994 per the START I treaty. It first served in combat during the 1998 bombing of Iraq and again during the 1999 NATO bombing of Yugoslavia the following year. The B-1B has supported U.S. and NATO military forces in the wars in Afghanistan and Iraq, as well as strikes in Iran, Libya, Syria and Venezuela. As of 2025, the Air Force operates 45 B-1Bs bombers, with many retired units in the Boneyard. The Northrop Grumman B-21 Raider is to begin replacing the B-1B after 2025; all B-1s are planned to be retired by 2036, replaced by the B-21.",0.5714285714285714,local,what was the aim of the gravity probe b (gp-b) mission?,2229310779
+1152,Determine the correct option: What is the Liouville density? among the listed options.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option",0.375,local,determine the correct option: what is the liouville density? among the listed options.,3214345215
+1153,Select the most accurate option: How many crystallographic point groups are there in three-dimensional space? based on the given context.,7,32,14,5,27,B,No match found.,0.0,live_api,select the most accurate option: how many crystallographic point groups are there in three-dimensional space? based on the given context.,564966198
+1154,Identify the correct statement: What is the significance of regularization in terms of renormalization problems in physics? carefully.,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a framework that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a structure below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a structure under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a framework below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.
+
+One of the most cited works in this area examines how experts (PhD students in physics) and novices (undergraduate students that completed one semester of mechanics) categorize and represent physics problems. They found that novices sort problems into categories based upon surface features (e.g., keywords in the problem statement or visual configurations of the objects depicted). Experts, however, categorize problems based upon their deep structures (i.e., the main physics principle used to solve the problem).Chi et al. 1981",0.6,local,identify the correct statement: what is the significance of regularization in terms of renormalization problems in physics? carefully.,2630988558
+1155,Choose the correct answer: What is the relationship between the Wigner function and the density matrix operator? based on the given context.,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.",0.6923076923076923,local,choose the correct answer: what is the relationship between the wigner function and the density matrix operator? based on the given context.,2778588253
+1156,Pick the best possible answer: What is the Peierls bracket in canonical quantization? from the following choices.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization approach.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization technique.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization procedure that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization procedure.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization approach.,C,No match found.,0.0,live_api,pick the best possible answer: what is the peierls bracket in canonical quantization? from the following choices.,2927334318
+1157,Pick the best possible answer: What is the gravitomagnetic interaction? based on the given context.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general concept of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Sociologists representing symbolic interactionism argue that social rules are created through the interaction between the members of a society. The focus on active interaction highlights the fluid, shifting character of social rules. These are specific to the social context, a context that varies through time and place. That means a social rule changes over time within the same society. What was acceptable in the past may no longer be the case. Similarly, rules differ across space: what is acceptable in one society may not be so in another.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Implementation
+Context menus are opened via various forms of user interaction that target a region of the GUI that supports context menus. The specific form of user interaction and the means by which a region is targeted vary:",0.4444444444444444,local,pick the best possible answer: what is the gravitomagnetic interaction? based on the given context.,873517589
+1158,Select the most accurate option: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? based on the given context.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,select the most accurate option: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? based on the given context.,3850172846
+1159,Choose the correct answer: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,No match found.,0.0,live_api,choose the correct answer: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,3569747024
+1160,Select the most accurate option: What is a trophic level in an ecological pyramid? from the following choices.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecomechanism.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecostructure.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.",0.4,local,select the most accurate option: what is a trophic level in an ecological pyramid? from the following choices.,2356801257
+1161,Choose the correct answer: What is the Maxwell's Demon thought experiment?,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an raise in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a reduce in temperature in one part and an enhance in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an raise in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an raise in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an enhance in temperature in the other, in accordance with the second law of thermodynamics.",C,"A hallmark of Albert Einstein's career was his use of visualized thought experiments (German: Gedankenexperiment) as a fundamental tool for understanding physical issues and for elucidating his concepts to others. Einstein's thought experiments took diverse forms. In his youth, he mentally chased beams of light. For special relativity, he employed moving trains and flashes of lightning to explain his theory. For general relativity, he considered a person falling off a roof, accelerating elevators, blind beetles crawling on curved surfaces and the like. In his debates with Niels Bohr on the nature of reality, he proposed imaginary devices that attempted to show, at least in concept, how the Heisenberg uncertainty principle might be evaded. In a contribution to the literature on quantum mechanics, Einstein considered two particles briefly interacting and then flying apart so that their states are correlated, anticipating the phenomenon known as quantum entanglement.",0.25,local,choose the correct answer: what is the maxwell's demon thought experiment?,2808954918
+1162,What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam?,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam?,3388460700
+1163,Choose the correct answer: What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? based on the given context.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.21428571428571427,live_api,choose the correct answer: what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? based on the given context.,305192259
+1164,Identify the correct statement: What is the function of mammary glands in mammals? among the listed options.,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.4,local,identify the correct statement: what is the function of mammary glands in mammals? among the listed options.,2023377453
+1165,Determine the correct option: What is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or Copernican principles that can be used to address specific issues in the Lambda-CDM model and distinguish between current models and other possible models? from the following choices.,"The Copernican principle, which proposes that Earth, the Solar mechanism, and the Milky Way are not at the centre of the universe, but instead, the universe is expanding equally in all directions. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","Inhomogeneous cosmology, which states that the universe is entirely homogeneous and isotropic, directly proportional to the density of matter and radiation. This model proposes that everything in the universe is completely uniform, but it does not match observations.","Inhomogeneous cosmology, which models the universe as an extremely large, low-density void, instead of using the concept of dark energy. According to the model, this framework can match the observed accelerating universe and cosmological constant, but it contradicts the Copernican principle.","The cosmological principle, which proposes that Earth, the Solar mechanism, and the Milky Way are at the centre of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","The principle of dark energy, which proposes that a new form of energy, not previously detected, is responsible for the acceleration of the expansion of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.",C,"Physics without the principle
+The standard model of cosmology, the Lambda-CDM model, assumes the Copernican principle and the more general cosmological principle. Some cosmologists and theoretical physicists have created models without the cosmological or Copernican principles to constrain the values of observational results, to address specific known issues in the Lambda-CDM model, and to propose tests to distinguish between current models and other possible models.",0.625,local,determine the correct option: what is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or copernican principles that can be used to address specific issues in the lambda-cdm model and distinguish between current models and other possible models? from the following choices.,3334964859
+1166,Select the most accurate option: What is the Josephson effect? based on the given context.,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6666666666666666,local,select the most accurate option: what is the josephson effect? based on the given context.,3438059452
+1167,Which of the following is correct? What happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,"The excess base metal will often solidify, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often crystallize-out, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often dissolve, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often liquefy, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.","The excess base metal will often evaporate, becoming the proeutectoid until the remaining concentration of solutes reaches the eutectoid level, which will then crystallize as a separate microstructure.",B,No match found.,0.0,live_api,which of the following is correct? what happens to excess base metal as a solution cools from the upper transformation temperature towards an insoluble state? based on the given context.,1820322829
+1168,Pick the best possible answer: What is the contrast between illuminance and luminance? based on the given context.,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,No match found.,0.0,live_api,pick the best possible answer: what is the contrast between illuminance and luminance? based on the given context.,3220450295
+1169,Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern?,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+The simplest descriptions of diffraction are those in which the situation can be reduced to a two-dimensional problem. For water waves, this is already the case; water waves propagate only on the surface of the water. For light, we can often neglect one direction if the diffracting object extends in that direction over a distance far greater than the wavelength. In the case of light shining through small circular holes, we have to take into account the full three-dimensional nature of the problem.
+
+Concept 
+Diffraction is a general phenomenon of waves, occuring whenever a wavefront is obstructed. The obstruction may be solidly blocking the wave or transparent and shifting the phase of the wave. The waves beyond the obstacle interfere causing a diffraction pattern. The diffraction pattern cannot be predicted by the straight line trajectories of geometrical optics. For a simple example, a strong light source blocked by a solid object does not show a crisp dark shadow when examined carefully.",0.6666666666666666,local,which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern?,1379607540
+1170,Choose the correct answer: What is an order parameter? carefully.,An order parameter is a measure of the temperature of a physical structure.,An order parameter is a measure of the gravitational force in a physical structure.,An order parameter is a measure of the magnetic field strength in a physical structure.,An order parameter is a measure of the degree of symmetry breaking in a physical mechanism.,An order parameter is a measure of the rotational symmetry in a physical structure.,D,"Multiple choice, multiple choice question, or objective response is a form of an objective assessment in which respondents are asked to select only the correct answer from the choices offered as a list. The multiple choice format is most frequently used in educational testing, in market research, and in elections, when a person chooses between multiple candidates, parties, or policies.
+Although E. L. Thorndike developed an early scientific approach to testing students, it was his assistant Benjamin D. Wood who developed the multiple-choice test. Multiple-choice testing increased in popularity in the mid-20th century when scanners and data-processing machines were developed to check the result. Christopher P. Sole created the first multiple-choice examinations for computers on a Sharp Mz 80 computer in 1982.",0.3333333333333333,local,choose the correct answer: what is an order parameter? carefully.,3172966628
+1171,Select the most accurate option: What is the Roche limit? among the listed options.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.3333333333333333,local,select the most accurate option: what is the roche limit? among the listed options.,2143025846
+1172,Choose the correct answer: What is the decay energy for the free neutron decay process?,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+Bound-state β decay 
+A very small minority of free neutron decays (about four per million) are ""two-body decays"": the proton, electron and antineutrino are produced, but the electron fails to gain the 13.6 eV energy necessary to escape the proton, and therefore simply remains bound to it, as a neutral hydrogen atom.An Overview Of Neutron Decay  J. Byrne in Quark-Mixing, CKM Unitarity (H. Abele and D. Mund, 2002), see p.XV In this type of beta decay, in essence all of the neutron decay energy is carried off by the antineutrino.
+
+The most common forms of radioactive decay are:
+ Alpha decay: this process is caused when the nucleus emits an alpha particle, which is a helium nucleus consisting of two protons and two neutrons. The result of the emission is a new element with a lower atomic number.
+ Beta decay (and electron capture): these processes are regulated by the weak force, and result from a transformation of a neutron into a proton, or a proton into a neutron. The neutron to proton transition is accompanied by the emission of an electron and an antineutrino, while proton to neutron transition (except in electron capture) causes the emission of a positron and a neutrino. The electron or positron emissions are called beta particles. Beta decay either increases or decreases the atomic number of the nucleus by one. Electron capture is more common than positron emission, because it requires less energy. In this type of decay, an electron is absorbed by the nucleus, rather than a positron emitted from the nucleus. A neutrino is still emitted in this process, and a proton changes to a neutron.
+ Gamma decay: this process results from a change in the energy level of the nucleus to a lower state, resulting in the emission of electromagnetic radiation. The excited state of a nucleus which results in gamma emission usually occurs following the emission of an alpha or a beta particle. Thus, gamma decay usually follows alpha or beta decay.",0.625,local,choose the correct answer: what is the decay energy for the free neutron decay process?,3700304050
+1173,Which of the following is correct? What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation?,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.
+
+See also
+ Invariant (physics)
+ Momentum
+ Cauchy momentum equation
+ Energy
+ Conservation of energy and the First law of thermodynamics
+ Conservative system
+ Conserved quantity
+ Some kinds of helicity are conserved in dissipationless limit: hydrodynamical helicity, magnetic helicity, cross-helicity.
+ Principle of mutability
+ Conservation law of the Stress–energy tensor
+ Riemann invariant
+ Philosophy of physics
+ Totalitarian principle
+ Convection–diffusion equation
+ Uniformity of nature",0.6,local,which of the following is correct? what is the relationship between the cauchy momentum equation and the navier-stokes equation?,1604514646
+1174,Choose the correct answer: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,choose the correct answer: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? based on the given context.,3685610474
+1175,Determine the correct option: What is a magnetic monopole in particle physics? carefully.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.",0.5,local,determine the correct option: what is a magnetic monopole in particle physics? carefully.,829063450
+1176,Determine the correct option: What is the piezoelectric strain coefficient for AT-cut quartz crystals?,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"A quartz crystal microbalance (QCM), also known as quartz microbalance (QMB) and sometimes also as quartz crystal nanobalance (QCN), measures a mass variation per unit area by measuring the change in frequency of a quartz crystal resonator. The resonance is disturbed by the addition or removal of a small mass due to oxide growth/decay or film deposition at the surface of the acoustic resonator. The QCM can be used under vacuum, in gas phase (""gas sensor"", first use described by King) and more recently in liquid environments. It is useful for monitoring the rate of deposition in thin-film deposition systems under vacuum. In liquid, it is highly effective at determining the affinity of molecules (proteins, in particular) to surfaces functionalized with recognition sites. Larger entities such as viruses or polymers are investigated as well. QCM has also been used to investigate interactions between biomolecules. Frequency measurements are easily made to high precision (discussed below); h",0.1111111111111111,live_api,determine the correct option: what is the piezoelectric strain coefficient for at-cut quartz crystals?,3564128751
+1177,Select the most accurate option: What is Minkowski space? based on the given context.,Minkowski space is a physical space where objects move in a straight line unless acted upon by a force.,Minkowski space is a mathematical model that combines inertial space and time manifolds with a non-inertial reference frame of space and time into a four-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a two-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a three-dimensional model relating a position to the field.,Minkowski space is a physical space where objects move in a curved line unless acted upon by a force.,B,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.0,live_api,select the most accurate option: what is minkowski space? based on the given context.,3102491748
+1178,Identify the correct statement: What is the Erlangen program? from the following choices.,"The Erlangen program is a approach of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on group principle and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+The  statement is a return statement and the  statement stops the program. The  statement has six different formats: it can be used as a return statement, a break statement, a continue statement, an end marker or to leave a procedure.
+
+More sophisticated versions of the systems reply try to identify more precisely what ""the system"" is and they differ in exactly how they describe it. According to these replies, the ""mind that speaks Chinese"" could be such things as: the ""software"", a ""program"", a ""running program"", a simulation of the ""neural correlates of consciousness"", the ""functional system"", a ""simulated mind"", an ""emergent property"", or ""a virtual mind"".",0.5714285714285714,local,identify the correct statement: what is the erlangen program? from the following choices.,2800588676
+1179,"Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids?",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids?",181158632
+1180,Which of the following is correct? What is a trophic level in an ecological pyramid? carefully.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecoframework.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecoframework.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""
+
+A keystone species is a species that is connected to a disproportionately large number of other species in the food-web. Keystone species have lower levels of biomass in the trophic pyramid relative to the importance of their role. The many connections that a keystone species holds means that it maintains the organization and structure of entire communities. The loss of a keystone species results in a range of dramatic cascading effects (termed trophic cascades) that alters trophic dynamics, other food web connections, and can cause the extinction of other species. The term keystone species was coined by Robert Paine in 1969 and is a reference to the keystone architectural feature as the removal of a keystone species can result in a community collapse just as the removal of the keystone in an arch can result in the arch's loss of stability.
+Sea otters (Enhydra lutris) are commonly cited as an example because they limit the density of sea urchins that feed on kelp. If sea otters are removed from the system, the urchins graze until the kelp beds disappear, and this has a dramatic effect on community structure.",0.625,local,which of the following is correct? what is a trophic level in an ecological pyramid? carefully.,3140693256
+1181,"Select the most accurate option: What is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources?","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.",0.3333333333333333,local,"select the most accurate option: what is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources?",2126904402
+1182,Pick the best possible answer: What are the two main factors that cause resistance in a metal? among the listed options.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"The following is a list of fictional characters from the comic-book series The Boys, created by Garth Ennis and Darick Robertson, and subsequent media franchise developed by Eric Kripke, consisting of a live-action series adaptation, the web series Seven on 7, the animated anthology series The Boys Presents: Diabolical, and the live-action spin-off series Gen V.",0.0,live_api,pick the best possible answer: what are the two main factors that cause resistance in a metal? among the listed options.,2383953156
+1183,Identify the correct statement: What does Earnshaw's theorem state? based on the given context.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,"Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Being in a lower or higher level of the Chomsky hierarchy 
+Using Greibach's theorem, it can be shown that the two following problems are undecidable:
+ Given a context-sensitive grammar, does it describe a context-free language?
+ Given a context-free grammar, does it describe a regular language?.
+
+Note that ""completeness"" has a different meaning here than it does in the context of Gödel's first incompleteness theorem, which states that no recursive, consistent set of non-logical axioms  of the Theory of Arithmetic is complete, in the sense that there will always exist an arithmetic statement  such that neither  nor  can be proved from the given set of axioms.",0.5454545454545454,local,identify the correct statement: what does earnshaw's theorem state? based on the given context.,1301150080
+1184,"Pick the best possible answer: Who proposed the concept of ""maximal acceleration""?",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"There has been significant academic and political debate about whether Donald Trump, the 45th and 47th president of the United States, can be considered a fascist according to consensus definitions of the term or because of expressed attitudes some critics perceive as sympathetic to the extreme right. Such critiques, first made from 2015, arose especially in response to his 2024 presidential campaign and during his second term as president. A number of prominent scholars, former officials and critics have drawn comparisons between him and fascist leaders with respect to authoritarian actions and rhetoric, while others have rejected the label.
+Trump has supported political violence against opponents; many academics cited Trump's involvement in the January 6 U.S. Capitol attack as an example of fascism. Trump has been accused of racism and xenophobia with respect to his rhetoric about illegal immigrants and his policies of mass deportation and family separation. Trump's base, referred to",0.0,live_api,"pick the best possible answer: who proposed the concept of ""maximal acceleration""?",669602101
+1185,Pick the best possible answer: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? based on the given context.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is key for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is key for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,pick the best possible answer: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? based on the given context.,2429613415
+1186,Pick the best possible answer: What is the Einstein@Home project? based on the given context.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.3,local,pick the best possible answer: what is the einstein@home project? based on the given context.,1530752898
+1187,Identify the correct statement: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,identify the correct statement: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,755297117
+1188,Identify the correct statement: What is the relationship between dielectric loss and the transparency of a material? from the following choices.,"Dielectric loss in a material can cause refraction, which can lower the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can raise the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can raise the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+One economist's analysis calculates that despite increased overall spending, Christmas is a deadweight loss under orthodox microeconomic theory, because of the effect of gift-giving. This loss is calculated as the difference between what the gift giver spent on the item and what the gift receiver would have paid for the item. It is estimated that in 2001, Christmas resulted in a $4billion deadweight loss in the US alone.Joel Waldfogel ""The Deadweight Loss of Christmas"" (PDF), American Economic Review, December 1993, 83 (5). Retrieved December 25, 2023.""Is Santa a deadweight loss?"" (). The Economist December 20, 2001. Because of complicating factors, this analysis is sometimes used to discuss possible flaws in current microeconomic theory. Other deadweight losses include the effects of Christmas on the environment and the fact that material gifts are often perceived as white elephants, imposing cost for upkeep and storage and contributing to clutter.Reuters. ""Christmas is Damaging the Environment, Report Says"" , December 16, 2005.",0.5454545454545454,local,identify the correct statement: what is the relationship between dielectric loss and the transparency of a material? from the following choices.,99338633
+1189,"What is power density in the context of energy systems, and how does it differ between renewable and non-renewable energy sources?","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy system, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy system, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy system, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy system, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy system, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.",0.45454545454545453,local,"what is power density in the context of energy systems, and how does it differ between renewable and non-renewable energy sources?",2236504933
+1190,Identify the correct statement: What is the Roche limit? based on the given context.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is the roche limit? based on the given context.,262739141
+1191,Choose the correct answer: What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe?,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.
+
+During the quark epoch (shortly after the Big Bang), the electroweak force split into the electromagnetic and weak force. It is thought that the required temperature of 1015 K has not been seen widely throughout the universe since before the quark epoch, and currently the highest human-made temperature in thermal equilibrium is around  (from the Large Hadron Collider).",0.5882352941176471,local,choose the correct answer: what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe?,3720081742
+1192,"What is the reason behind the designation of Class L dwarfs, and what is their color and composition?","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"The concept of Design by Contract is central to Eiffel. The contracts assert what must be true before a routine is executed (precondition) and what must hold to be true after the routine finishes (post-condition). Class Invariant contracts define what assertions must hold true both before and after any feature of a class is accessed (both routines and attributes). Moreover, contracts codify into executable code developer and designers assumptions about the operating environment of the features of a class or the class as a whole by means of the invariant.
+
+Because cooler stars, such as red giants and red dwarfs, emit little energy in the blue and UV regions of the spectrum, their power is often under-represented by the UBV scale. Indeed, some L and T class stars have an estimated magnitude of well over 100, because they emit extremely little visible light, but are strongest in infrared.
+
+Crystallography is useful in phase identification. When manufacturing or using a material, it is generally desirable to know what compounds and what phases are present in the material, as their composition, structure and proportions will influence the material's properties. Each phase has a characteristic arrangement of atoms. X-ray or neutron diffraction can be used to identify which structures are present in the material, and thus which compounds are present. Crystallography covers the enumeration of the symmetry patterns which can be formed by atoms in a crystal and for this reason is related to group theory.",0.6666666666666666,local,"what is the reason behind the designation of class l dwarfs, and what is their color and composition?",710694522
+1193,"Pick the best possible answer: What is the meaning of the term ""horror vacui""?",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate structure.,The spatial-corporeal component of Descartes' metaphysics.,B,"This branch of mathematics deals with the long-term qualitative behavior of dynamical systems. Here, the focus is not on finding precise solutions to the equations defining the dynamical system (which is often hopeless), but rather to answer questions like ""Will the system settle down to a steady state in the long term, and if so, what are the possible attractors?"" or ""Does the long-term behavior of the system depend on its initial condition?""
+
+The term ""Mitteleuropa"" conjures up negative historical associations among some people although the Germans have not played an exclusively negative role in the region. Most Central European Jews embraced the enlightened German humanistic culture of the 19th century. Jews at the turn of the 20th century became representatives of what many consider to be Central European culture at its best, but the Nazi conceptualisation of ""Mitteleuropa"" sought to destroy that culture. The term ""Mitteleuropa"" is widely used in German education and media without a negative meaning, especially since the end of communism. Many people from the new states of Germany do not identify themselves as being part of Western Europe and therefore prefer the term ""Mitteleuropa"".
+
+Philosophy
+ Philosophical analysis – a general term for the techniques used by philosophers
+Philosophical analysis refers to the clarification and composition of words put together and the entailed meaning behind them. Philosophical analysis dives deeper into the meaning of words and seeks to clarify that meaning by contrasting the various definitions. It is the study of reality, justification of claims, and the analysis of various concepts. Branches of philosophy include logic, justification, metaphysics, values and ethics.  If questions can be answered empirically, meaning it can be answered by using the senses, then it is not considered philosophical. Non-philosophical questions also include events that happened in the past, or questions science or mathematics can answer.
+ Analysis is the name of a prominent journal in philosophy.",0.625,local,"pick the best possible answer: what is the meaning of the term ""horror vacui""?",3095165920
+1194,"Select the most accurate option: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? carefully.","MOND is a concept that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that boosts the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a framework that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a principle that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"select the most accurate option: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? carefully.",2517140595
+1195,Determine the correct option: What is the reason for the sun appearing slightly yellowish when viewed from Earth? based on the given context.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,No match found.,0.0,live_api,determine the correct option: what is the reason for the sun appearing slightly yellowish when viewed from earth? based on the given context.,1366057432
+1196,Select the most accurate option: What is the main advantage of ferroelectric memristors? based on the given context.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,No match found.,0.0,live_api,select the most accurate option: what is the main advantage of ferroelectric memristors? based on the given context.,2009865946
+1197,Which of the following is correct? What is the Landau-Lifshitz-Gilbert equation used for in physics?,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,"Quantum ideal gas law 
+Since for atomic and molecular gases, the classical ideal gas law is well suited in most cases, let us describe the equation of state for elementary particles with mass  and spin  that takes into account quantum effects. In the following, the upper sign will always correspond to Fermi–Dirac statistics and the lower sign to Bose–Einstein statistics. The equation of state of such gases with  particles occupying a volume  with temperature  and pressure  is given byLandau, L. D., Lifshitz, E. M. (1980). Statistical physics: Part I (Vol. 5). page 162-166.
+
+The Landau–Stanyukovich–Zeldovich–Kompaneets equation of state (often abbreviated LSZK EOS) is a thermodynamic model used to describe the pressure–energy relationship of detonation products and high‑pressure reactive gases in computational hydrodynamics and explosive physics. It is named after prominent Soviet physicists Lev Landau & K. P. Stanyukovich (1945),[1] and Yakov Zeldovich & Alexander Kompaneyets (1960).[2] The LSZK EOS is primarily used to model detonation products rather than the unreacted solid explosive itself. It provides a smooth pressure–energy relationship suitable for numerical simulations of blast waves and shock propagation.
+
+Applications 
+ Composites of more than two functions 
+The chain rule can be applied to composites of more than two functions. To take the derivative of a composite of more than two functions, notice that the composite of , , and  (in that order) is the composite of  with . The chain rule states that to compute the derivative of , it is sufficient to compute the derivative of  and the derivative of . The derivative of  can be calculated directly, and the derivative of  can be calculated by applying the chain rule again.Landau, L. D., and E. M. Lifshitz. Mechanics. Course of Theoretical Physics, Vol. 1. Pergamon Press, 1960, §12.",0.6666666666666666,local,which of the following is correct? what is the landau-lifshitz-gilbert equation used for in physics?,1449352911
+1198,Identify the correct statement: What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? based on the given context.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6923076923076923,local,identify the correct statement: what is the relationship between the cauchy momentum equation and the navier-stokes equation? based on the given context.,1729714845
+1199,"Determine the correct option: Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields? from the following choices.","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.
+
+An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.",0.47368421052631576,local,"determine the correct option: which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields? from the following choices.",1890476164
+1200,"Determine the correct option: What is a transient condensation cloud, also known as a Wilson cloud? carefully.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Around the beginning of the twentieth century, it was found that under certain conditions a fast-moving charged particle caused a condensation of supersaturated water vapor along its path. In 1911, Charles Wilson used this principle to devise his cloud chamber so he could photograph the tracks of charged particles, such as fast-moving electrons.",0.3,local,"determine the correct option: what is a transient condensation cloud, also known as a wilson cloud? carefully.",1391230231
+1201,Select the most accurate option: What is the definition of an improper rotation? based on the given context.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"An arithmetic calendar is one that is based on a strict set of rules; an example is the current Jewish calendar. Such a calendar is also referred to as a rule-based calendar. The advantage of such a calendar is the ease of calculating when a particular date occurs. The disadvantage is imperfect accuracy. Furthermore, even if the calendar is very accurate, its accuracy diminishes slowly over time, owing to changes in Earth's rotation. This limits the lifetime of an accurate arithmetic calendar to a few thousand years. After then, the rules would need to be modified from observations made since the invention of the calendar.
+
+One standard definition is that an angle is a figure consisting of two rays which lie in a plane and share a common endpoint. Alternatively, given such a figure, an angle might be defined as: the opening between the rays; the area of the plane that lies between the rays; or the amount of rotation about the vertex of one ray to the other.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6,local,select the most accurate option: what is the definition of an improper rotation? based on the given context.,3875944839
+1202,Pick the best possible answer: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy?,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,"The scale is reverse logarithmic: the brighter an object is, the lower its magnitude number. A difference of 1.0 in magnitude corresponds to the brightness ratio of , or about 2.512. For example, a magnitude 2.0 star is 2.512 times as bright as a magnitude 3.0 star, 6.31 times as magnitude 4.0, and 100 times as magnitude 7.0.
+
+In 1856, Norman Robert Pogson formalized the system by defining a first magnitude star as a star that is 100 times as bright as a sixth-magnitude star, thereby establishing the logarithmic scale still in use today. This implies that a star of magnitude  is about 2.512 times as bright as a star of magnitude . This figure, the fifth root of 100, became known as . The 1884 Harvard Photometry and 1886 Potsdamer Durchmusterung star catalogs popularized Pogson's ratio, and eventually it became a de facto standard in modern astronomy to describe differences in brightness.",0.375,local,pick the best possible answer: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy?,4276704304
+1203,Pick the best possible answer: What is the information loss paradox in black holes? based on the given context.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.",0.4166666666666667,local,pick the best possible answer: what is the information loss paradox in black holes? based on the given context.,3811650805
+1204,Which of the following is correct? What is the reason for the formation of stars exclusively within molecular clouds?,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.5,local,which of the following is correct? what is the reason for the formation of stars exclusively within molecular clouds?,1928313043
+1205,Choose the correct answer: What is the most popular explanation for the shower-curtain effect? carefully.,The pressure differential between the inside and outside of the shower,The reduce in velocity resulting in an raise in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"Father Knows Best is an American sitcom starring Robert Young, Jane Wyatt, Elinor Donahue, Billy Gray, and Lauren Chapin. The series, which began on radio in 1949, aired as a television show for six seasons and 203 episodes. Created by Ed James, Father Knows Best follows the lives of the Andersons, a middle-class family living in the town of Springfield. The state in which Springfield is located is never specified, but it is generally accepted to be located in the Midwestern United States.
+The television series debuted on CBS in October 1954. It ran for one season and was canceled by CBS but picked up by NBC, where it remained for three seasons. After cancellation by NBC in 1958, the series returned to CBS, where it aired until May 1960.",0.0,live_api,choose the correct answer: what is the most popular explanation for the shower-curtain effect? carefully.,125698074
+1206,Pick the best possible answer: What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? from the following choices.,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.4375,local,pick the best possible answer: what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? from the following choices.,1948212434
+1207,Determine the correct option: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.",0.2857142857142857,local,determine the correct option: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,3249842915
+1208,Determine the correct option: What is the Liouville density? among the listed options.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option",0.375,local,determine the correct option: what is the liouville density? among the listed options.,3214345215
+1209,Pick the best possible answer: What is the decay energy for the free neutron decay process? among the listed options.,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+One curiosity is why alpha particles, helium nuclei, should be preferentially emitted as opposed to other particles like a single proton or neutron or other atomic nuclei.These other decay modes, while possible, are extremely rare compared to alpha decay. Part of the reason is the high binding energy of the alpha particle, which means that its mass is less than the sum of the masses of two free protons and two free neutrons. This increases the disintegration energy. Computing the total disintegration energy given by the equation
+
+Bound-state β decay 
+A very small minority of free neutron decays (about four per million) are ""two-body decays"": the proton, electron and antineutrino are produced, but the electron fails to gain the 13.6 eV energy necessary to escape the proton, and therefore simply remains bound to it, as a neutral hydrogen atom.An Overview Of Neutron Decay  J. Byrne in Quark-Mixing, CKM Unitarity (H. Abele and D. Mund, 2002), see p.XV In this type of beta decay, in essence all of the neutron decay energy is carried off by the antineutrino.",0.5,local,pick the best possible answer: what is the decay energy for the free neutron decay process? among the listed options.,431470162
+1210,Identify the correct statement: Which of the following statements accurately describes the origin and significance of the triskeles symbol? among the listed options.,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,No match found.,0.0,live_api,identify the correct statement: which of the following statements accurately describes the origin and significance of the triskeles symbol? among the listed options.,389804659
+1211,Determine the correct option: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680+) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680+ ultimately comes from the oxidation of water into O2 and H+ through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700+ of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700+ can vary.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.42857142857142855,local,determine the correct option: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,4190398067
+1212,Which of the following is correct? What does Earnshaw's theorem state? based on the given context.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,"Being in a lower or higher level of the Chomsky hierarchy 
+Using Greibach's theorem, it can be shown that the two following problems are undecidable:
+ Given a context-sensitive grammar, does it describe a context-free language?
+ Given a context-free grammar, does it describe a regular language?.
+
+The set  is a context-sensitive language, but there does not exist a context-free grammar generating this language. So there exist context-sensitive languages which are not context-free. To prove that a given language is not context-free, one may employ the pumping lemma for context-free languages or a number of other methods, such as Ogden's lemma or Parikh's theorem.
+
+Note that ""completeness"" has a different meaning here than it does in the context of Gödel's first incompleteness theorem, which states that no recursive, consistent set of non-logical axioms  of the Theory of Arithmetic is complete, in the sense that there will always exist an arithmetic statement  such that neither  nor  can be proved from the given set of axioms.",0.6363636363636364,local,which of the following is correct? what does earnshaw's theorem state? based on the given context.,3238070573
+1213,Determine the correct option: What did Fresnel predict and verify with regards to total internal reflections?,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,No match found.,0.0,live_api,determine the correct option: what did fresnel predict and verify with regards to total internal reflections?,1328313627
+1214,Identify the correct statement: What is a uniform tiling in the hyperbolic plane?,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,"All regular polygons, {a}.
+ Regular tetrahedron: {3,3}
+ In general, all regular n-simplexes, {3,3,...,3}
+ The regular 24-cell in 4 dimensions, {3,4,3}.
+ The great 120-cell {5,5/2,5} and the grand stellated 120-cell {5/2,5,5/2}
+The self-dual (infinite) regular Euclidean honeycombs are:
+ Apeirogon: {∞}
+ Square tiling: {4,4}
+ Cubic honeycomb: {4,3,4}
+ In general, all regular n-dimensional Euclidean hypercubic honeycombs: {4,3,...,3,4}.
+The self-dual (infinite) regular hyperbolic honeycombs are:
+ Compact hyperbolic tilings: {5,5}, {6,6}, ... {p,p}.
+ Paracompact hyperbolic tiling: {∞,∞}
+ Compact hyperbolic honeycombs: {3,5,3}, {5,3,5}, and {5,3,3,5}
+ Paracompact hyperbolic honeycombs: {3,6,3}, {6,3,6}, {4,4,4}, and {3,3,4,3,3}
+
+In the hyperbolic case, the Hartman–Grobman theorem gives the conditions for the existence of a continuous function that maps the neighborhood of the fixed point of the map to the linear map J · x. The hyperbolic case is also structurally stable.  Small changes in the vector field will only produce small changes in the Poincaré map and these small changes will reflect in small changes in the position of the eigenvalues of J in the complex plane, implying that the map is still hyperbolic.
+
+The total differential of u is
+, and similarly for v.
+Then the image  is a linear transformation, fixing the origin, and expressible as the action of a complex number of a particular type. When (dx, dy) is also interpreted as that type of complex number, the action is of complex multiplication in the appropriate complex number plane. As such, there is a type of angle (Euclidean, hyperbolic, or slope) that is preserved in such a multiplication. Due to Df being invertible, the type of complex number is uniform over the surface. Consequently, a surface deformation or diffeomorphism of surfaces has the conformal property of preserving (the appropriate type of) angles.",0.5714285714285714,local,identify the correct statement: what is a uniform tiling in the hyperbolic plane?,3056135443
+1215,Identify the correct statement: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere?,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,"A white dwarf is a very dense type of star: in an Earth-sized volume, it packs a mass that is comparable to the Sun. A white dwarf radiates light from residual heat and eventual crystallization, not from nuclear fusion. Stars like the Sun, whose mass is not high enough to collapse into a neutron star or black hole, are expected to become white dwarf stars later in their evolution. The nearest known white dwarf is Sirius B, at 8.6 light years, the smaller component of the Sirius binary star.
+In 1910, Henry Norris Russell, Edward Charles Pickering and Williamina Fleming discovered that, despite being a dim star, 40 Eridani B was of spectral type A, or white. This would become known as the first white dwarf. The name white dwarf was coined by Willem Jacob Luyten in 1922.  In 1931 Subrahmanyan Chandrasekhar developed a physical model of white dwarfs and he won the 1983 Nobel Prize in Physics for studies in the evolution of stars.
+These compact stars are composed mostly of a highly compress",0.09090909090909091,live_api,identify the correct statement: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere?,2079127798
+1216,Choose the correct answer: What is radiometric dating? from the following choices.,"Radiometric dating is a procedure of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which landed the first humans on the Moon in 1969. Apollo was conceived in 1960 in the Dwight D. Eisenhower presidency during Project Mercury and executed after Project Gemini. Apollo was later dedicated to President John F. Kennedy's national goal, ""before this decade is out, of landing a man on the Moon and returning him safely to the Earth"" in his address to the U.S. Congress on May 25, 1961.
+Kennedy's goal was accomplished on the Apollo 11 mission, when astronauts Neil Armstrong and Buzz Aldrin landed their Apollo Lunar Module (LM) on July 20, 1969, and walked on the lunar surface, while Michael Collins remained in lunar orbit in the command and service module (CSM), and all three landed safely on Earth in the Pacific Ocean on July 24. Approximately 650 million people worldwide watched this first landing on television. Five subsequent Apollo missions also landed astronauts",0.0,live_api,choose the correct answer: what is radiometric dating? from the following choices.,1797390073
+1217,"Identify the correct statement: What is a transient condensation cloud, also known as a Wilson cloud?","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Around the beginning of the twentieth century, it was found that under certain conditions a fast-moving charged particle caused a condensation of supersaturated water vapor along its path. In 1911, Charles Wilson used this principle to devise his cloud chamber so he could photograph the tracks of charged particles, such as fast-moving electrons.
+
+The Oort cloud is thought to occupy a vast space starting from between  to as far as  from the Sun. This cloud encases the celestial bodies that start at the middle of the Solar System—the Sun, all the way to outer limits of the Kuiper Belt. The Oort cloud consists of viable materials necessary for the creation of celestial bodies. The Solar System's planets exist only because of the planetesimals (chunks of leftover space that assisted in the creation of planets) that were condensed and formed by the gravity of the Sun. The eccentric made from these trapped planetesimals is why the Oort Cloud even exists. Some estimates place the outer edge at between . The region can be subdivided into a spherical outer Oort cloud of , and a doughnut-shaped inner cloud, the Hills cloud, of . The outer cloud is only weakly bound to the Sun and supplies the long-period (and possibly Halley-type) comets that fall to inside the orbit of Neptune. The inner Oort cloud is also known as the Hills cloud, named after Jack G. Hills, who proposed its existence in 1981. Models predict that the inner cloud should have tens or hundreds of times as many cometary nuclei as the outer halo; it is seen as a possible source of new comets that resupply the relatively tenuous outer cloud as the latter's numbers are gradually depleted. The Hills cloud explains the continued existence of the Oort cloud after billions of years.
+
+Private clouds, for example, are used in cloud security to mitigate the increased attack surface area of outsourcing data storage. A private cloud is cloud infrastructure operated solely for a single organization, whether managed internally or by a third party, or hosted internally or externally.
+ Hybrid cloud storage are another cloud security solution, involving storage infrastructure that uses a combination of on-premises storage resources with cloud storage. The on-premises storage is usually managed by the organization, while the public cloud storage provider is responsible for the management and security of the data stored in the cloud. Using a hybrid model allows data to be ingested in an encrypted format where the key is held within the on-premise infrastructure and can limit access to the use of on-premise cloud storage gateways, which may have options to encrypt the data prior to transfer.
+ Cloud services are considered ""public"" when they are delivered over the public Internet.
+ A virtual private cloud (VPC) is a pool of shared resources within a public cloud that provides a certain level of isolation between the different users using the resources. VPCs achieve user isolation through the allocation of a private IP subnet and a virtual communication construct (such as a VLAN or a set of encrypted communication channels) between users as well as the use of a virtual private network (VPN) per VPC user, securing, by means of authentication and encryption, the remote access of the organization to its VPC resources.",0.5555555555555556,local,"identify the correct statement: what is a transient condensation cloud, also known as a wilson cloud?",478516996
+1218,"Pick the best possible answer: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? carefully.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is operated by five partner space agencies: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada). It is the first space station built, maintained and crewed through international cooperation and the largest human spacecraft ever constructed. It is an orbital research station, where scientific experiments in microgravity are conducted and the space environment is studied. Since 2 November 2000, it has hosted the longest continuous presence of humans in space. Alongside Tiangong, it is one of the only two currently operational space stations.
+The station orbits between 51.64° north and south, at about 400 kilometres (250 miles) above Earth, below the Van Allen radiation belts and most space debris. Its orbit takes it at 7.67 km/s (27,600 km/h; 17,200 mph) roughly every 93 minutes around Earth, 15.5 times a da",0.1,live_api,"pick the best possible answer: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? carefully.",2105427467
+1219,Choose the correct answer: What is the American Petroleum Institute (API) gravity?,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,No match found.,0.0,live_api,choose the correct answer: what is the american petroleum institute (api) gravity?,756914129
+1220,Determine the correct option: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching?,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,determine the correct option: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching?,2284571805
+1221,Identify the correct statement: What does Earnshaw's theorem state? from the following choices.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,No match found.,0.0,live_api,identify the correct statement: what does earnshaw's theorem state? from the following choices.,309606510
+1222,Select the most accurate option: What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth?,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,select the most accurate option: what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth?,1733275453
+1223,Pick the best possible answer: What did Newton adopt after his correspondence with Hooke in 1679-1680? carefully.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,pick the best possible answer: what did newton adopt after his correspondence with hooke in 1679-1680? carefully.,309881672
+1224,Select the most accurate option: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? carefully.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,select the most accurate option: what is the 'reactive leidenfrost effect' observed in non-volatile materials? carefully.,1521960637
+1225,Determine the correct option: What is the piezoelectric strain coefficient for AT-cut quartz crystals?,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"A quartz crystal microbalance (QCM), also known as quartz microbalance (QMB) and sometimes also as quartz crystal nanobalance (QCN), measures a mass variation per unit area by measuring the change in frequency of a quartz crystal resonator. The resonance is disturbed by the addition or removal of a small mass due to oxide growth/decay or film deposition at the surface of the acoustic resonator. The QCM can be used under vacuum, in gas phase (""gas sensor"", first use described by King) and more recently in liquid environments. It is useful for monitoring the rate of deposition in thin-film deposition systems under vacuum. In liquid, it is highly effective at determining the affinity of molecules (proteins, in particular) to surfaces functionalized with recognition sites. Larger entities such as viruses or polymers are investigated as well. QCM has also been used to investigate interactions between biomolecules. Frequency measurements are easily made to high precision (discussed below); h",0.1111111111111111,live_api,determine the correct option: what is the piezoelectric strain coefficient for at-cut quartz crystals?,3564128751
+1226,Select the most accurate option: What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe?,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.
+
+During the quark epoch (shortly after the Big Bang), the electroweak force split into the electromagnetic and weak force. It is thought that the required temperature of 1015 K has not been seen widely throughout the universe since before the quark epoch, and currently the highest human-made temperature in thermal equilibrium is around  (from the Large Hadron Collider).",0.5555555555555556,local,select the most accurate option: what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe?,209809306
+1227,"Identify the correct statement: What is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? among the listed options.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+Following a Greenpeace protest, Apple released a statement on April 17, 2012, committing to ending its use of coal and shifting to 100% renewable clean energy. By 2013, Apple was using 100% renewable energy to power their data centers. Overall, 75% of the company's power came from clean renewable sources.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..",0.35294117647058826,local,"identify the correct statement: what is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? among the listed options.",3198395484
+1228,Pick the best possible answer: What is the distinction between redshift due to the expansion of the universe and Doppler redshift? among the listed options.,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the raise of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no contrast between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the boost of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.42857142857142855,local,pick the best possible answer: what is the distinction between redshift due to the expansion of the universe and doppler redshift? among the listed options.,2162642881
+1229,Choose the correct answer: What is the Maxwell's Demon thought experiment? among the listed options.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an enhance in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an enhance in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an enhance in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,choose the correct answer: what is the maxwell's demon thought experiment? among the listed options.,2037564986
+1230,Pick the best possible answer: What did Newton's manuscripts of the 1660s show? from the following choices.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,No match found.,0.0,live_api,pick the best possible answer: what did newton's manuscripts of the 1660s show? from the following choices.,2050027315
+1231,Determine the correct option: What is the relationship between dielectric loss and the transparency of a material? based on the given context.,"Dielectric loss in a material can cause refraction, which can lower the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can enhance the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can raise the material's transparency at higher frequencies.",B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.",0.5833333333333334,local,determine the correct option: what is the relationship between dielectric loss and the transparency of a material? based on the given context.,1292645308
+1232,Which of the following is correct? What is organography? from the following choices.,Organography is the study of the stem and root of plants.,Organography is the scientific description of the structure and function of the organs of living things.,"Organography is the study of the development of organs from the ""growing points"" or apical meristems.",Organography is the study of the commonality of development between foliage leaves and floral leaves.,Organography is the study of the relationship between different organs and different functions in plants.,B,"All of these speculations were proven correct in the following decades.
+
+Shoghi Effendi, the head of the religion from 1921 to 1957, wrote the following summary of what he considered to be the distinguishing principles of Baháʼu'lláh's teachings, which, he said, together with the laws and ordinances of the Kitáb-i-Aqdas constitute the bedrock of the Baháʼí Faith:
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by",0.8,local,which of the following is correct? what is organography? from the following choices.,1414443843
+1233,Identify the correct statement: What is the second law of thermodynamics? among the listed options.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic framework is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated structures left to spontaneous evolution can lower, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic mechanism and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"For the foundations of thermodynamics, the conceptual importance of this was emphasized by Bryan, by Carathéodory, and by Born. The reason is that calorimetry presupposes a type of temperature as already defined before the statement of the first law of thermodynamics, such as one based on empirical scales. Such a presupposition involves making the distinction between empirical temperature and absolute temperature. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis.
+
+Clausius–Duhem inequality
+The Clausius–Duhem inequality can be used to express the second law of thermodynamics for elastic-plastic materials.  This inequality is a statement concerning the irreversibility of natural processes, especially when energy dissipation is involved.
+
+It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.",0.4444444444444444,local,identify the correct statement: what is the second law of thermodynamics? among the listed options.,898751474
+1234,Identify the correct statement: What is the application of Memristor? among the listed options.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control frameworks, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.25,local,identify the correct statement: what is the application of memristor? among the listed options.,1717628622
+1235,Pick the best possible answer: What is the effect generated by a spinning superconductor? carefully.,"An electric field, precisely aligned with the spin axis.","A magnetic field, randomly aligned with the spin axis.","A magnetic field, precisely aligned with the spin axis.","A gravitational field, randomly aligned with the spin axis.","A gravitational field, precisely aligned with the spin axis.",C,"The Kardashev scale (Russian: шкала Кардашёва, romanized: shkala Kardashova) is a method of measuring a civilization's level of technological advancement based on the amount of energy it is capable of harnessing and using. The measure was proposed by Soviet astronomer Nikolai Kardashev in 1964, and was named after him.
+Kardashev first outlined his scale in a paper presented at the 1964 conference that communicated findings on BS-29-76, Byurakan Conference in the Armenian SSR, which he initiated, a scientific meeting that reviewed the Soviet radio astronomy space listening program. The paper was titled ""Передача информации внеземными цивилизациями"" (""Transmission of Information by Extraterrestrial Civilizations""). Starting from a functional definition of civilization, based on the immutability of physical laws and using human civilization as a model for extrapolation, Kardashev's initial model was developed. He proposed a classification of civilizations into three types, based on the ax",0.0,live_api,pick the best possible answer: what is the effect generated by a spinning superconductor? carefully.,1905738902
+1236,Determine the correct option: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,determine the correct option: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? among the listed options.,2083780853
+1237,Choose the correct answer: What is the significance of Baryon Acoustic Oscillations (BAOs) in the study of the universe? carefully.,"BAOs establish a preferred length scale for baryons, which can be used to detect a subtle preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130-160 Mpc.",BAOs help to determine the average temperature of the Universe by measuring the temperature of the cosmic microwave background radiation.,BAOs provide a way to measure the time it takes for a signal to reach its destination compared to the time it takes for background noise to dissipate.,BAOs can be used to make a two-dimensional map of the galaxy distribution in the Universe.,BAOs are used to measure the speed of light in the Universe.,A,"Baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe on large scales. These are predicted to arise in the Lambda-CDM model due to acoustic oscillations in the photon–baryon fluid of the early universe and can be observed in the cosmic microwave background angular power spectrum. BAOs set up a preferred length scale for baryons. As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1%) preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130–160 Mpc. This feature was predicted theoretically in the 1990s and then discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations with BAO measurements from galaxy redshift surveys provides a precise estimate of the Hubble constant and the average matter density in the Universe. The results support the Lambda-CDM model.
+
+The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping (also called collisionless damping or Silk damping). The acoustic oscillations arise because of a conflict in the photon–baryon plasma in the early universe. The pressure of the photons tends to erase anisotropies, whereas the gravitational attraction of the baryons, moving at speeds much slower than light, makes them tend to collapse to form overdensities. These two effects compete to create acoustic oscillations, which give the microwave background its characteristic peak structure. The peaks correspond, roughly, to resonances in which the photons decouple when a particular mode is at its peak amplitude.
+
+Dark energy, though speculative, solves numerous problems. Measurements of the cosmic microwave background indicate that the universe is very nearly spatially flat, and therefore according to general relativity the universe must have almost exactly the critical density of mass/energy. But the mass density of the universe can be measured from its gravitational clustering, and is found to have only about 30% of the critical density. Since theory suggests that dark energy does not cluster in the usual way it is the best explanation for the ""missing"" energy density. Dark energy also helps to explain two geometrical measures of the overall curvature of the universe, one using the frequency of gravitational lenses, and the other using the characteristic pattern of the large-scale structure--baryon acoustic oscillations--as a cosmic ruler.",0.45454545454545453,local,choose the correct answer: what is the significance of baryon acoustic oscillations (baos) in the study of the universe? carefully.,2041834995
+1238,Pick the best possible answer: What is radiometric dating? based on the given context.,"Radiometric dating is a procedure of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"Futures studies, futures research or futurology is the systematic, interdisciplinary and holistic study of social and technological advancement, and other environmental trends, often for the purpose of exploring how people may live and work in the future. Futures studies scholars make predictions of the future and aim at systematically exploring alternatives to the predictions. Futures studies are a branch of the social sciences and an extension to the field of history. Futures studies (colloquially called ""futures"" by many of the field's researchers) seeks to understand what is likely to continue and what could plausibly change.
+Unlike the physical sciences where a narrower, more specified system is studied, futurology concerns a much bigger and more complex world system. The methodology and knowledge are much less proven than in natural science and social sciences like sociology and economics. There is a debate as to whether this discipline is an art or science, and it is sometimes d",0.0,live_api,pick the best possible answer: what is radiometric dating? based on the given context.,3720098321
+1239,Which of the following is correct? What is the relationship between chemical potential and quarks/antiquarks? carefully.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a framework. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a structure. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a structure. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a mechanism. Higher μ indicates a higher density of quarks.",A,"In physical science, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles. In everyday as well as scientific usage, matter generally includes atoms and anything made up of them, and any particles (or combination of particles) that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or heat. Matter exists in various states (also known as phases). These include classical everyday phases such as solid, liquid, and gas – for example water exists as ice, liquid water, and gaseous steam – but other states are possible, including plasma, Bose–Einstein condensates, fermionic condensates, and quark–gluon plasma.
+Usually, atoms can be imagined as a nucleus consisting of subatomic particles, protons and neutrons and a surrounding ""cloud"" of or",0.1,live_api,which of the following is correct? what is the relationship between chemical potential and quarks/antiquarks? carefully.,171815470
+1240,"Pick the best possible answer: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? carefully.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"pick the best possible answer: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? carefully.",330500080
+1241,Determine the correct option: What is the Roche limit? from the following choices.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:
+
+The orbit of Adrastea lies inside Jupiter's synchronous orbit radius (as does Metis's), and as a result, tidal forces are slowly causing its orbit to decay so that it will one day impact Jupiter. If its density is similar to Amalthea's then its orbit would actually lie within the fluid Roche limit. However, since it is not breaking up, it must still lie outside its rigid Roche limit.
+
+The second is a Grignard reaction, elaborated by Hoffman-La Roche from the original synthesis of Inhoffen et al.  They are both symmetrical; the BASF synthesis is C20 + C20, and the Hoffman-La Roche synthesis is C19 + C2 + C19.",0.7142857142857143,local,determine the correct option: what is the roche limit? from the following choices.,4155221551
+1242,Select the most accurate option: What is the Minkowski diagram used for? based on the given context.,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.0,live_api,select the most accurate option: what is the minkowski diagram used for? based on the given context.,592929523
+1243,Identify the correct statement: What is the variation between redshift due to the expansion of the universe and Doppler redshift? based on the given context.,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the raise of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no distinction between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the boost of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.46153846153846156,local,identify the correct statement: what is the variation between redshift due to the expansion of the universe and doppler redshift? based on the given context.,1479246062
+1244,Determine the correct option: What is a Hilbert space in quantum mechanics? among the listed options.,A complex vector space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical mechanism is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical mechanism is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical structure is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical framework is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",0.4,local,determine the correct option: what is a hilbert space in quantum mechanics? among the listed options.,2344041900
+1245,Choose the correct answer: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? based on the given context.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,choose the correct answer: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? based on the given context.,3232936351
+1246,Which of the following is correct? What is the identity operation in symmetry groups? from the following choices.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"Although the semi-localized textbook σ-π separation model describes the bonding of allene using a pair of localized orthogonal π orbitals, the full molecular orbital description of the bonding is more subtle.  The symmetry-correct doubly-degenerate HOMOs of allene (adapted to the D2d point group) can either be represented by a pair of orthogonal MOs or as twisted helical linear combinations of these orthogonal MOs.  The symmetry of the system and the degeneracy of these orbitals imply that both descriptions are correct (in the same way that there are infinitely many ways to depict the doubly-degenerate HOMOs and LUMOs of benzene that correspond to different choices of eigenfunctions in a two-dimensional eigenspace).  However, this degeneracy is lifted in substituted allenes, and the helical picture becomes the only symmetry-correct description for the HOMO and HOMO–1 of the C2-symmetric . This qualitative MO description extends to higher odd-carbon cumulenes (e.g., 1,2,3,4-pentatetraene).
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:
+
+Legendre's identity includes products of any two complete elliptic integrals. For the derivation of the function side from the equation scale of Legendre's identity, the Product rule is now applied in the following:",0.625,local,which of the following is correct? what is the identity operation in symmetry groups? from the following choices.,2510459815
+1247,What is the reason for recycling rare metals according to the United Nations?,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will decrease in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Multiple methods have been proposed for the recycling of CRT glass. The methods involve thermal, mechanical and chemical processes. All proposed methods remove the lead oxide content from the glass. Some companies operated furnaces to separate the lead from the glass. A coalition called the Recytube project was once formed by several European companies to devise a method to recycle CRTs. The phosphors used in CRTs often contain rare earth metals. A CRT contains about 7 grams of phosphor.
+
+The US defines espionage towards itself as ""the act of obtaining, delivering, transmitting, communicating, or receiving information about the national defence with an intent, or reason to believe, that the information may be used to the injury of the United States or to the advantage of any foreign nation"". Black's Law Dictionary (1990) defines espionage as: ""... gathering, transmitting, or losing ... information related to the national defense"". Espionage is a violation of United States law,  and Article 106a of the Uniform Code of Military Justice. The United States, like most nations, conducts espionage against other nations, under the control of the National Clandestine Service. Britain's espionage activities are controlled by the Secret Intelligence Service.
+
+On 12 November 1958, France asked the United Nations to grant French Cameroon independence and end the Trusteeship. On 5 December 1958, the United Nations’ General Assembly took note of the French government's declaration according to which French Cameroon would gain independence on 1 January 1960. On 13 March 1959, the United Nations’ General Assembly resolved that the UN Trusteeship Agreement with France for French Cameroon would end when French Cameroon became independent on 1 January 1960.",1.0,local,what is the reason for recycling rare metals according to the united nations?,3357893081
+1248,Identify the correct statement: What are permutation-inversion groups? based on the given context.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.,0.0,live_api,identify the correct statement: what are permutation-inversion groups? based on the given context.,4060872181
+1249,Choose the correct answer: Who was Giordano Bruno? based on the given context.,A German philosopher who supported the Keplerian principle that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic concept that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian concept that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican framework that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean concept that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Rudolf Joseph Lorenz Steiner (German: [ˈʃtaɪnɐ]; 27 or 25 February 1861 – 30 March 1925) was an Austrian New Age guru, philosopher, occultist, social reformer, architect, esotericist, and claimed clairvoyant. Steiner gained initial recognition at the end of the nineteenth century as a literary critic and published works including The Philosophy of Freedom. At the beginning of the twentieth century he founded an esoteric spiritual movement, anthroposophy, with roots in German idealist philosophy and theosophy. His teachings are influenced by (Christian) Gnosticism or neognosticism. Many of his ideas are pseudoscientific. He was also prone to pseudohistory.
+In the first, more philosophically oriented phase of this movement, Steiner attempted to find a synthesis between science and spirituality by developing what he termed ""spiritual science"", which he sought to apply the clarity of thinking characteristic of Western philosophy to spiritual questions, differentiating this approach from wh",0.1111111111111111,live_api,choose the correct answer: who was giordano bruno? based on the given context.,3066518847
+1250,What is the relationship between chemical potential and quarks/antiquarks?,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a system. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a system. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a system. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a system. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a system. Higher μ indicates a higher density of quarks.",A,"where the n is the number of up and down quarks and antiquarks.
+
+where
+  is the number of constituent quarks, and
+  is the number of constituent antiquarks.
+
+Baryons, alongside mesons, are hadrons, composite particles composed of quarks. Quarks have baryon numbers of B =  and antiquarks have baryon numbers of . The term ""baryon"" usually refers to triquarks—baryons made of three quarks ().",0.3333333333333333,local,what is the relationship between chemical potential and quarks/antiquarks?,1353464762
+1251,Pick the best possible answer: What is the Ramsauer-Townsend effect? based on the given context.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a non-noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a noble gas. It requires the wave framework of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a non-noble gas. It requires the wave principle of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of electrons by atoms of any gas. It can be explained by classical mechanics.,B,"Willy Brandt (German: [ˈvɪliː ˈbʁant] ; born Herbert Ernst Karl Frahm; 18 December 1913 – 8 October 1992) was a German politician and statesman who was leader of the Social Democratic Party of Germany (SPD) from 1964 to 1987 and concurrently served as the chancellor of West Germany from 1969 to 1974. He was awarded the Nobel Peace Prize in 1971 for his efforts to strengthen cooperation in Western Europe through the EEC and to achieve reconciliation between West Germany and the countries of Eastern Europe. He was the first Social Democratic chancellor since 1930. 
+Fleeing to Norway and then Sweden during the Nazi regime and working as a left-wing journalist, he took the name Willy Brandt as a pseudonym to avoid detection by Nazi agents, and then formally adopted the name in 1948. Brandt earned initial fame as governing mayor of West Berlin. He served as the foreign minister and as the vice chancellor in Kurt Georg Kiesinger's cabinet, and became chancellor in 1969.
+As chancellor, he mai",0.0,live_api,pick the best possible answer: what is the ramsauer-townsend effect? based on the given context.,3567513569
+1252,Choose the correct answer: What is reciprocal length or inverse length?,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).
+
+where  is the attenuation at a given wavelength ,  is the particle concentration as a number density, and  is the path length. The absorbance of the radiation is the logarithm (decadic or, more usually, natural) of the reciprocal of the transmittance :
+
+See also
+Conversion of units
+Orders of magnitude (length)
+Reciprocal length",0.5714285714285714,local,choose the correct answer: what is reciprocal length or inverse length?,3273656404
+1253,Select the most accurate option: What was Pierre de Fermat's solution to the problem of refraction? from the following choices.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.5714285714285714,local,select the most accurate option: what was pierre de fermat's solution to the problem of refraction? from the following choices.,2910409578
+1254,"Choose the correct answer: What is power density in the context of energy mechanisms, and how does it differ between renewable and non-renewable energy sources? carefully.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.",0.3333333333333333,local,"choose the correct answer: what is power density in the context of energy mechanisms, and how does it differ between renewable and non-renewable energy sources? carefully.",3057286034
+1255,What did Newton adopt after his correspondence with Hooke in 1679-1680?,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,"Robert Hooke (; 18 July 1635 – 3 March 1703) was an English polymath who was active as a physicist ('natural philosopher'), astronomer, geologist, meteorologist, and architect. He is credited as one of the first scientists to investigate living things at microscopic scale in 1665, using a compound microscope that he designed. Hooke was an impoverished scientific inquirer in young adulthood who went on to become one of the most important scientists of his time. After the Great Fire of London in 1666, Hooke (as a surveyor and architect) attained wealth and esteem by performing more than half of the property line surveys and assisting with the city's rapid reconstruction. Often vilified by writers in the centuries after his death, his reputation was restored at the end of the twentieth century and he has been called ""England's Leonardo [da Vinci]"".
+Hooke was a Fellow of the Royal Society and from 1662, he was its first Curator of Experiments. From 1665 to 1703, he was also Professor of Ge",0.3333333333333333,local,what did newton adopt after his correspondence with hooke in 1679-1680?,738823600
+1256,"What is the concept of simultaneity in Einstein's book, Relativity?","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Einstein originally framed special relativity in terms of kinematics (the study of moving bodies). In 1908, Hermann Minkowski reinterpreted special relativity in geometric terms as a theory of spacetime. Einstein adopted Minkowski's formalism in his 1915 general theory of relativity.
+
+Other important motivations for Einstein's development of relativity were the moving magnet and conductor problem and (indirectly) the negative aether drift experiments, already mentioned by him in the introduction of his first relativity paper. Einstein wrote in a note in 1952:
+
+Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.",0.6666666666666666,local,"what is the concept of simultaneity in einstein's book, relativity?",3051468436
+1257,Which of the following is correct? What is the significance of the discovery of the Crab pulsar? carefully.,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.",0.625,local,which of the following is correct? what is the significance of the discovery of the crab pulsar? carefully.,3902318902
+1258,Pick the best possible answer: What is the role of axioms in a formal framework? from the following choices.,"Basis statements called axioms form the foundation of a formal principle and, together with the deducing rules, help in deriving a set of statements called theorems using proof principle.",Axioms are supplementary statements added to a formal concept that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal concept, providing additional perspective to theorems derived from the concept.",The axioms in a framework are used for experimental validation of the theorems derived from the statements in the framework.,"The axioms in a formal framework are added to prove that the statements derived from the framework are true, irrespective of their validity in the real world.",A,"In addition to familiar number systems such as the rationals, there are other, less immediate examples of fields. The following example is a field consisting of four elements called , , , and . The notation is chosen such that  plays the role of the additive identity element (denoted 0 in the axioms above), and  is the multiplicative identity (denoted  in the axioms above). The field axioms can be verified by using some more field theory, or by direct computation. For example,
+ , which equals , as required by the distributivity.
+
+The ontological correlate to the third stratum is the ""theory of manifolds"". In formal ontology, it is a free investigation where a mathematician can assign several meanings to several symbols, and all their possible valid deductions in a general and indeterminate manner. It is, properly speaking, the most universal mathematics of all. Through the positing of certain indeterminate objects (formal-ontological categories) as well as any combination of mathematical axioms, mathematicians can explore the apodeictic connections between them, as long as consistency is preserved.
+
+In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.",0.5,local,pick the best possible answer: what is the role of axioms in a formal framework? from the following choices.,342125576
+1259,Which of the following is correct? What was the aim of the Gravity Probe B (GP-B) mission? among the listed options.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"The B-1 was first used in combat in support of operations in Iraq during Operation Desert Fox in December 1998, employing unguided GP weapons. B-1s have been subsequently used in Operation Allied Force (Kosovo) and, most notably, in Operation Enduring Freedom in Afghanistan and the 2003 invasion of Iraq. The B-1 has deployed an array of conventional weapons in war zones, most notably the GBU-31,  JDAM. In the first six months of Operation Enduring Freedom, eight B-1s dropped almost 40 percent of aerial ordnance, including some 3,900 JDAMs. JDAM munitions were heavily used by the B-1 over Iraq, notably on 7 April 2003 in an unsuccessful attempt to kill Saddam Hussein and his two sons. During Operation Enduring Freedom, the B-1 was able to raise its mission capable rate to 79%.
+
+After the inactivation of SAC and the establishment of the Air Combat Command (ACC) in 1992, the B-1 developed a greater conventional weapons capability. Part of this development was the start-up of the U.S. Air Force Weapons School B-1 Division.Scott, Ed. ""JDAM Course Ushers B-1 Students Into New Era"". Program Manager, 1 November 1999. Retrieved 14 August 2010. In 1994, two additional B-1 bomb wings were also created in the Air National Guard, with former fighter wings in the Kansas Air National Guard and the Georgia Air National Guard converting to the aircraft. By the mid-1990s, the B-1 could employ GP weapons as well as various CBUs. By the end of the 1990s, with the advent of the ""Block D"" upgrade, the B-1 boasted a full array of guided and unguided munitions.
+
+Lacking cooperation from the Pentagon in the making of the film, the set designers reconstructed the aircraft cockpit to the best of their ability by comparing the cockpit of a B-29 Superfortress and a single photograph of the cockpit of a B-52 and relating this to the geometry of the B-52's fuselage. The B-52 was state-of-the-art in the 1960s, and its cockpit was off-limits to the film crew. When some United States Air Force personnel were invited to view the reconstructed B-52 cockpit, they said that ""it was absolutely correct, even to the little black box which was the CRM."" It was so accurate that Kubrick was concerned about whether Adam's team had carried out all its research legally.",0.46153846153846156,local,which of the following is correct? what was the aim of the gravity probe b (gp-b) mission? among the listed options.,3961329162
+1260,Select the most accurate option: What is a virtual particle? among the listed options.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"Virtual drums
+Virtual drums are a type of audio software that simulates the sound of a drum kit using synthesized drum kit sounds or digital samples of acoustic drum sounds. Different drum software products offer a recording function, the ability to select from several acoustically distinctive drum kits (e.g., jazz, rock, metal), as well as the option to incorporate different songs into the session. Some computer software can turn any hard surface into a virtual drum kit using only one microphone.
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option",0.4444444444444444,local,select the most accurate option: what is a virtual particle? among the listed options.,3464614345
+1261,What is the definition of dimension in mathematics?,"The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of degrees of freedom of a point that moves on this object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.",C,"In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+A tesseract is an example of a four-dimensional object. Whereas outside mathematics the use of the term ""dimension"" is as in: ""A tesseract has four dimensions"", mathematicians usually express this as: ""The tesseract has dimension 4"", or: ""The dimension of the tesseract is 4"".
+
+The dimension of Euclidean -space is . When trying to generalize to other types of spaces, one is faced with the question ""what makes  -dimensional?"" One answer is that to cover a fixed ball in  by small balls of radius , one needs on the order of  such small balls. This observation leads to the definition of the Minkowski dimension and its more sophisticated variant, the Hausdorff dimension, but there are also other answers to that question. For example, the boundary of a ball in  looks locally like  and this leads to the notion of the inductive dimension. While these notions agree on , they turn out to be different when one looks at more general spaces.",1.0,local,what is the definition of dimension in mathematics?,3967208507
+1262,Determine the correct option: How many crystallographic point groups are there in three-dimensional space?,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.",0.36363636363636365,local,determine the correct option: how many crystallographic point groups are there in three-dimensional space?,4020427383
+1263,Choose the correct answer: What is a virtual particle?,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+The triplet deuteron nucleon is barely bound at , and none of the higher energy states are bound. The singlet deuteron is a virtual state, with a negative binding energy of . There is no such stable particle, but this virtual particle transiently exists during neutron–proton inelastic scattering, accounting for the unusually large neutron scattering cross-section of the proton.
+
+While an electron–positron virtual pair is in existence, the Coulomb force from the ambient electric field surrounding an electron causes a created positron to be attracted to the original electron, while a created electron experiences a repulsion. This causes what is called vacuum polarization. In effect, the vacuum behaves like a medium having a dielectric permittivity more than unity. Thus the effective charge of an electron is actually smaller than its true value, and the charge decreases with increasing distance from the electron. This polarization was confirmed experimentally in 1997 using the Japanese TRISTAN particle accelerator. Virtual particles cause a comparable shielding effect for the mass of the electron. – lists a 9% mass difference for an electron that is the size of the Planck distance.",0.8,local,choose the correct answer: what is a virtual particle?,869253090
+1264,Select the most accurate option: What did Fresnel predict and verify with regards to total internal reflections? among the listed options.,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.06666666666666667,live_api,select the most accurate option: what did fresnel predict and verify with regards to total internal reflections? among the listed options.,3110724826
+1265,Which of the following is correct? What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? among the listed options.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's framework of general relativity.",C,No match found.,0.0,live_api,which of the following is correct? what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? among the listed options.,1904689073
+1266,Which of the following is correct? What is bollard pull primarily used for measuring? from the following choices.,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,"This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: ""sailor"", from naus: ""ship"".
+Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article. Terms used in other fields associated with bodies of water can be found at Glossary of fishery terms, Glossary of underwater diving terminology, Glossary of rowing terms, and Glossary of meteorology.",0.1111111111111111,live_api,which of the following is correct? what is bollard pull primarily used for measuring? from the following choices.,4116518199
+1267,Determine the correct option: What is the function of the fibrous cardiac skeleton? from the following choices.,The fibrous cardiac skeleton is a mechanism of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+Toxicity 
+From ancient times, humans have used cardiac-glycoside-containing plants and their crude extracts as arrow coatings, homicidal or suicidal aids, rat poisons, heart tonics, diuretics and emetics, primarily due to the toxic nature of these compounds. Thus, though cardiac glycosides have been used for their medicinal function, their toxicity must also be recognized. For example, in 2008 US poison centers reported 2,632 cases of digoxin toxicity, and 17 cases of digoxin-related deaths. Because cardiac glycosides affect the cardiovascular, neurologic, and gastrointestinal systems, these three systems can be used to determine the effects of toxicity. The effect of these compounds on the cardiovascular system presents a reason for concern, as they can directly affect the function of the heart through their inotropic and chronotropic effects. In terms of inotropic activity, excessive cardiac glycoside dosage results in cardiac contractions with greater force, as further calcium is released from the SR of cardiac muscle cells. Toxicity also results in changes to heart chronotropic activity, resulting in multiple kinds of dysrhythmia and potentially fatal ventricular tachycardia. These dysrhythmias are an effect of an influx of sodium and decrease of resting membrane potential threshold in cardiac muscle cells. When taken beyond a narrow dosage range specific to each particular cardiac glycoside, these compounds can rapidly become dangerous. In sum, they interfere with fundamental processes that regulate membrane potential. They are toxic to the heart, the brain, and the gut at doses that are not difficult to reach. In the heart, the most common negative effect is premature ventricular contraction.
+
+The committee debated the possibility of a shift function (like in ITA2), which would allow more than 64 codes to be represented by a six-bit code. In a shifted code, some character codes determine choices between options for the following character codes. It allows compact encoding, but is less reliable for data transmission, as an error in transmitting the shift code typically makes a long part of the transmission unreadable. The standards committee decided against shifting, and so ASCII required at least a seven-bit code.",0.6666666666666666,local,determine the correct option: what is the function of the fibrous cardiac skeleton? from the following choices.,3374234306
+1268,What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy?,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.7777777777777778,local,what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy?,1163567402
+1269,Identify the correct statement: What is the significance of the discovery of the Crab pulsar? based on the given context.,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+As most of the students who read these bestiaries were monks and clerics, it is not impossible to say that there is a major religious significance within them. The bestiary was used to educate young men on the correct morals they should display. All of the animals presented in the bestiaries show some sort of lesson or meaning when presented. Much of what is proposed by the bestiaries mentions much of paganism because of the religious significance and time period of the medieval ages.
+
+In the context of debates around and proposals for the legalisation of euthanasia and assisted suicide, the 1998 conference affirmed that ""life is God-given and has intrinsic sanctity, significance and worth"".",0.7,local,identify the correct statement: what is the significance of the discovery of the crab pulsar? based on the given context.,832219506
+1270,"Pick the best possible answer: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? carefully.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The framework of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause significant variations in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.5384615384615384,local,"pick the best possible answer: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? carefully.",81977837
+1271,Select the most accurate option: What is the role of axioms in a formal concept? carefully.,"Basis statements called axioms form the foundation of a formal principle and, together with the deducing rules, help in deriving a set of statements called theorems using proof principle.",Axioms are supplementary statements added to a formal concept that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal framework, providing additional perspective to theorems derived from the framework.",The axioms in a principle are used for experimental validation of the theorems derived from the statements in the principle.,"The axioms in a formal concept are added to prove that the statements derived from the concept are true, irrespective of their validity in the real world.",A,"As a matter of fact, the role of axioms in mathematics and postulates in experimental sciences is different. In mathematics one neither ""proves"" nor ""disproves"" an axiom. A set of mathematical axioms gives a set of rules that fix a conceptual realm, in which the theorems logically follow. In contrast, in experimental sciences, a set of postulates shall allow deducing results that match or do not match experimental results. If postulates do not allow deducing experimental predictions, they do not set a scientific conceptual framework and have to be completed or made more accurate. If the postulates allow deducing predictions of experimental results, the comparison with experiments allows falsifying (falsified) the theory that the postulates install. A theory is considered valid as long as it has not been falsified.
+
+In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.
+
+The ontological correlate to the third stratum is the ""theory of manifolds"". In formal ontology, it is a free investigation where a mathematician can assign several meanings to several symbols, and all their possible valid deductions in a general and indeterminate manner. It is, properly speaking, the most universal mathematics of all. Through the positing of certain indeterminate objects (formal-ontological categories) as well as any combination of mathematical axioms, mathematicians can explore the apodeictic connections between them, as long as consistency is preserved.",0.5555555555555556,local,select the most accurate option: what is the role of axioms in a formal concept? carefully.,364066451
+1272,"Determine the correct option: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? from the following choices.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"determine the correct option: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? from the following choices.",4190495423
+1273,Identify the correct statement: Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions? from the following choices.,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+In 1956, Tsung-Dao Lee and Chen Ning Yang noticed that there was no evidence that parity was conserved in weak interactions, and so they postulated that this symmetry may not be preserved by the weak force. They sketched the design for an experiment for testing conservation of parity in the laboratory. Later that year, Chien-Shiung Wu and coworkers showed experimentally that an asymmetrical beta emission from  proved that parity is not conserved in beta decay. This surprising result overturned long-held assumptions about parity and the weak force. In recognition of their theoretical work, Lee and Yang were awarded the Nobel Prize for Physics in 1957. However Wu, who was female, was not awarded the Nobel prize.
+
+Wigner was awarded the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"". The prize was shared that year, with the other half of the award divided between Maria Goeppert-Mayer and J. Hans D. Jensen. Wigner professed that he had never considered the possibility that this might occur, and added: ""I never expected to get my name in the newspapers without doing something wicked."" He also won the Franklin Medal in 1950, the Enrico Fermi award in 1958, the Atoms for Peace Award in 1959, the Max Planck Medal in 1961, the National Medal of Science in 1969, the Albert Einstein Award in 1972, the Golden Plate Award of the American Academy of Achievement in 1974, the eponymous Wigner Medal in 1978, and the Herzl Prize in 1982. In 1968 he gave the Josiah Willard Gibbs lecture.",0.45,local,identify the correct statement: who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions? from the following choices.,93038190
+1274,Select the most accurate option: What is Lorentz symmetry or Lorentz invariance in relativistic physics? from the following choices.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.08333333333333333,live_api,select the most accurate option: what is lorentz symmetry or lorentz invariance in relativistic physics? from the following choices.,595510119
+1275,Choose the correct answer: What is the reason for heating metals to a temperature just above the upper critical temperature? among the listed options.,"To prevent the grains of solution from growing too large, which reduces mechanical properties such as toughness, shear strength, and tensile strength.","To boost the size of the grains of solution, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too large, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too small, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To enhance the size of the grains of solution, which lowers mechanical properties such as toughness, shear strength, and tensile strength.",C,"At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of the material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with ""ceramic"" in the context of ceramic capacitors for just this reason.",0.2857142857142857,local,choose the correct answer: what is the reason for heating metals to a temperature just above the upper critical temperature? among the listed options.,1529254722
+1276,Identify the correct statement: What is X-ray pulsar-based navigation (XNAV)? carefully.,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,identify the correct statement: what is x-ray pulsar-based navigation (xnav)? carefully.,1303575915
+1277,Select the most accurate option: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere?,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,select the most accurate option: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere?,2496223737
+1278,What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe?,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.
+
+During the quark epoch (shortly after the Big Bang), the electroweak force split into the electromagnetic and weak force. It is thought that the required temperature of 1015 K has not been seen widely throughout the universe since before the quark epoch, and currently the highest human-made temperature in thermal equilibrium is around  (from the Large Hadron Collider).",0.7142857142857143,local,what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe?,3095692893
+1279,Pick the best possible answer: What is the relationship between chemical potential and quarks/antiquarks? from the following choices.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a mechanism. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a framework. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a structure. Higher μ indicates a higher density of quarks.",A,No match found.,0.0,live_api,pick the best possible answer: what is the relationship between chemical potential and quarks/antiquarks? from the following choices.,3365044213
+1280,Identify the correct statement: What is a uniform tiling in the hyperbolic plane? based on the given context.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with regular polygons as faces. These are not vertex-transitive and isogonal.,A uniform tiling in the hyperbolic plane is a tessellation of the hyperbolic plane with irregular polygons as faces. These are vertex-transitive and isogonal.,"A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with regular polygons as faces. These are vertex-transitive and isogonal.","A uniform tiling in the hyperbolic plane is an edge-to-edge filling of the hyperbolic plane, with irregular polygons as faces. These are vertex-transitive and isogonal.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+All regular polygons, {a}.
+ Regular tetrahedron: {3,3}
+ In general, all regular n-simplexes, {3,3,...,3}
+ The regular 24-cell in 4 dimensions, {3,4,3}.
+ The great 120-cell {5,5/2,5} and the grand stellated 120-cell {5/2,5,5/2}
+The self-dual (infinite) regular Euclidean honeycombs are:
+ Apeirogon: {∞}
+ Square tiling: {4,4}
+ Cubic honeycomb: {4,3,4}
+ In general, all regular n-dimensional Euclidean hypercubic honeycombs: {4,3,...,3,4}.
+The self-dual (infinite) regular hyperbolic honeycombs are:
+ Compact hyperbolic tilings: {5,5}, {6,6}, ... {p,p}.
+ Paracompact hyperbolic tiling: {∞,∞}
+ Compact hyperbolic honeycombs: {3,5,3}, {5,3,5}, and {5,3,3,5}
+ Paracompact hyperbolic honeycombs: {3,6,3}, {6,3,6}, {4,4,4}, and {3,3,4,3,3}
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.7,local,identify the correct statement: what is a uniform tiling in the hyperbolic plane? based on the given context.,1557455689
+1281,Which of the following is correct? How many crystallographic point groups are there in three-dimensional space? carefully.,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.
+
+A Cartesian coordinate system for a three-dimensional space consists of an ordered triplet of lines (the axes) that go through a common point (the origin), and are pair-wise perpendicular; an orientation for each axis; and a single unit of length for all three axes. As in the two-dimensional case, each axis becomes a number line. For any point P of space, one considers a plane through P perpendicular to each coordinate axis, and interprets the point where that plane cuts the axis as a number. The Cartesian coordinates of P are those three numbers, in the chosen order. The reverse construction determines the point P given its three coordinates.
+
+One can use the same principle to specify the position of any point in three-dimensional space by the use of three Cartesian coordinates, which are the signed distances to three mutually perpendicular planes (or, equivalently, by its perpendicular projection onto three mutually perpendicular lines).",0.4166666666666667,local,which of the following is correct? how many crystallographic point groups are there in three-dimensional space? carefully.,3827013541
+1282,What is the isophotal diameter used for in measuring a galaxy's size?,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Other uses
+ Bad conduct discharge, a form of discharge from US military service, sometimes referred to colloquially as a ""big chicken dinner"".
+ Barrels per calendar day, a unit for measuring output of oil refineries
+ Blue compact dwarf galaxy, a small galaxy which contains large clusters of young, hot, massive stars
+ Board-certified diplomate, in the list of credentials in psychology
+ Buoyancy control device, in scuba diving
+ Bolt circle diameter, for example, of a crankset, of a bicycle disc brake, or in wheel sizing
+ ""Behind closed doors"", a marketing term for previewing a product to a select audience
+
+Other notable spiral galaxies in Canes Venatici are the Sunflower Galaxy (M63, NGC 5055), M94 (NGC 4736), and M106 (NGC 4258).
+ M63, the Sunflower Galaxy, was named for its appearance in large amateur telescopes. It is a spiral galaxy with an integrated magnitude of 9.0.
+ M94 (NGC 4736) is a small face-on spiral galaxy with approximate magnitude 8.0, about 15 million light-years from Earth.
+ NGC 4631 is a barred spiral galaxy, which is one of the largest and brightest edge-on galaxies in the sky.
+ M3 (NGC 5272) is a globular cluster 32,000 light-years from Earth. It is 18′ in diameter, and at magnitude 6.3 is bright enough to be seen with binoculars. It can even be seen with the naked eye under particularly dark skies.
+ M94, also cataloged as NGC 4736, is a face-on spiral galaxy 15 million light-years from Earth. It has very tight spiral arms and a bright core. The outskirts of the galaxy are incredibly luminous in the ultraviolet because of a ring of new stars surrounding the core 7,000 light-years in diameter. Though astronomers are not sure what has caused this ring of new stars, some hypothesize that it is from shock waves caused by a bar that is thus far invisible.
+
+Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.",0.5714285714285714,local,what is the isophotal diameter used for in measuring a galaxy's size?,2190192931
+1283,Which of the following is correct? What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation? carefully.,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+where  corresponds to no parity change or parity change, respectively. The special case of a transition between isobaric analogue states, where the structure of the final state is very similar to the structure of the initial state, is referred to as ""superallowed"" for beta decay, and proceeds very quickly. The following table lists the Δ and Δ values for the first few values of :
+
+Energy levels 
+The molecular term symbol is a shorthand expression of the angular momenta that characterize the electronic quantum states of a diatomic molecule, which are also eigenstates of the electronic molecular Hamiltonian. It is also convenient, and common, to represent a diatomic molecule as two-point masses connected by a massless spring. The energies involved in the various motions of the molecule can then be broken down into three categories: the translational, rotational, and vibrational energies. The theoretical study of the rotational energy levels of the diatomic molecules can be described using the below description of the rotational energy levels. While the study of vibrational energy level of the diatomic molecules can be described using the harmonic oscillator approximation or using the quantum vibrational interaction potentials. These potentials give more accurate energy levels because they take multiple vibrational effects into account.",0.5833333333333334,local,which of the following is correct? what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation? carefully.,1850543366
+1284,What is a phageome?,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+The field of concurrent and distributed computing studies similar questions in the case of either multiple computers, or a computer that executes a network of interacting processes: which computational problems can be solved in such a network and how efficiently? However, it is not at all obvious what is meant by ""solving a problem"" in the case of a concurrent or distributed system: for example, what is the task of the algorithm designer, and what is the concurrent or distributed equivalent of a sequential general-purpose computer?",1.0,local,what is a phageome?,2239849505
+1285,Select the most accurate option: How many crystallographic point groups are there in three-dimensional space? carefully.,7,32,14,5,27,B,"Diffraction topography (short: ""topography"") is an imaging technique based on Bragg diffraction.
+Diffraction topographic images (""topographies"") record the intensity profile of a beam of X-rays (or, sometimes, neutrons) diffracted by a crystal.
+A topography thus represents a two-dimensional spatial intensity mapping (image) of the X-rays diffracted in a specific direction, so regions which diffract substantially will appear brighter than those which do not.  This is equivalent to the spatial fine structure of an Laue reflection.
+Topographs often reveal the irregularities in a non-ideal crystal lattice.
+X-ray diffraction topography is one variant of X-ray imaging, making use of diffraction contrast rather than absorption contrast which is usually used in radiography and computed tomography (CT). Topography is exploited to a lesser extent with neutrons, and is the same concept as dark field imaging in an electron microscope.
+Topography is used for monitoring crystal quality and visualizi",0.07692307692307693,live_api,select the most accurate option: how many crystallographic point groups are there in three-dimensional space? carefully.,4287535166
+1286,Which of the following is correct? What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680+) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680+ ultimately comes from the oxidation of water into O2 and H+ through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700+ of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700+ can vary.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.5384615384615384,local,which of the following is correct? what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,1066946303
+1287,Which of the following is correct? What is the second law of thermodynamics? among the listed options.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic structure is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated structures left to spontaneous evolution can lower, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic mechanism and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.
+
+Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.
+
+Entropy is central to the second law of thermodynamics, which states that the entropy of an isolated system left to spontaneous evolution cannot decrease with time. As a result, isolated systems evolve toward thermodynamic equilibrium, where the entropy is highest. ""High"" entropy means that energy is more disordered or dispersed, while ""low"" entropy means that energy is more ordered or concentrated. A consequence of the second law of thermodynamics is that certain processes are irreversible.",0.4444444444444444,local,which of the following is correct? what is the second law of thermodynamics? among the listed options.,1203248562
+1288,Identify the correct statement: What is radiometric dating? from the following choices.,"Radiometric dating is a procedure of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.
+The method was developed in the late 1940s at the University of Chicago by Willard Libby.  It is based on the fact that radiocarbon (14C) is constantly being created in the Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting 14C combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire 14C by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of 14C it contains begins to decrease as the 14C undergoes radioactive decay. Measuring the amount of 14C in a sample from a dead plant or animal, such as a piece of wood or a fragment of bone, provides information that can be us",0.14285714285714285,live_api,identify the correct statement: what is radiometric dating? from the following choices.,2600177252
+1289,Choose the correct answer: What are the two main factors that cause resistance in a metal? based on the given context.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.
+
+Possessed, a band that formed in the San Francisco Bay Area during 1983, is described by AllMusic as ""connecting the dots"" between thrash metal and death metal with their 1985 debut album, Seven Churches. While attributed as having a Slayer influence, current and former members of the band had actually cited Venom and Motörhead, as well as early work by Exodus, as the main influences on their sound. Although the group had released only two studio albums and an EP in their formative years, they have been described by music journalists and musicians as either being ""monumental"" in developing the death metal style, or as being the first death metal band. Earache Records noted that ""the likes of Trey Azagthoth and Morbid Angel based what they were doing in their formative years on the Possessed blueprint laid down on the legendary Seven Churches recording. Possessed arguably did more to further the cause of 'Death Metal' than any of the early acts on the scene back in the mid-late 80's.""",0.7692307692307693,local,choose the correct answer: what are the two main factors that cause resistance in a metal? based on the given context.,2620518572
+1290,Choose the correct answer: What is the relationship between interstellar and cometary chemistry? from the following choices.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,No match found.,0.0,live_api,choose the correct answer: what is the relationship between interstellar and cometary chemistry? from the following choices.,1396116196
+1291,Identify the correct statement: What is the origin of the radio emission observed from supernova remnants? among the listed options.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,The following scientific events occurred in 2023.,0.0,live_api,identify the correct statement: what is the origin of the radio emission observed from supernova remnants? among the listed options.,1750968974
+1292,Pick the best possible answer: What did Newton's manuscripts of the 1660s show? based on the given context.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,No match found.,0.0,live_api,pick the best possible answer: what did newton's manuscripts of the 1660s show? based on the given context.,1756470792
+1293,Select the most accurate option: What is the main advantage of ferroelectric memristors? among the listed options.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.2727272727272727,local,select the most accurate option: what is the main advantage of ferroelectric memristors? among the listed options.,2361274379
+1294,Which of the following is correct? What is the piezoelectric strain coefficient for AT-cut quartz crystals? from the following choices.,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"The piezoelectric properties of crystalline quartz were discovered by Jacques and Pierre Curie in 1880. The first crystal oscillator was invented in 1917 by Alexander M. Nicolson, after which the first quartz crystal oscillator was built by Walter G. Cady in 1921. In 1927 the first quartz clock was built by Warren Marrison and J.W. Horton at Bell Telephone Laboratories in Canada. The following decades saw the development of quartz clocks as precision time measurement devices in laboratory settings—the bulky and delicate counting electronics, built with vacuum tubes at the time, limited their practical use elsewhere. The National Bureau of Standards (now NIST) based the time standard of the United States on quartz clocks from late 1929 until the 1960s, when it changed to atomic clocks. In 1969, Seiko produced the world's first quartz wristwatch, the Astron. Their inherent accuracy and low cost of production resulted in the subsequent proliferation of quartz clocks and watches.",0.4,local,which of the following is correct? what is the piezoelectric strain coefficient for at-cut quartz crystals? from the following choices.,1299732387
+1295,Pick the best possible answer: What is emissivity? carefully.,Emissivity is a measure of how well a surface resists deformation under stress.,Emissivity is a measure of how well a surface conducts heat.,Emissivity is a measure of how well a surface absorbs and emits thermal radiation.,Emissivity is a measure of how well a surface reflects visible light.,Emissivity is a measure of how well a surface absorbs and emits sound waves.,C,"The Kardashev scale (Russian: шкала Кардашёва, romanized: shkala Kardashova) is a method of measuring a civilization's level of technological advancement based on the amount of energy it is capable of harnessing and using. The measure was proposed by Soviet astronomer Nikolai Kardashev in 1964, and was named after him.
+Kardashev first outlined his scale in a paper presented at the 1964 conference that communicated findings on BS-29-76, Byurakan Conference in the Armenian SSR, which he initiated, a scientific meeting that reviewed the Soviet radio astronomy space listening program. The paper was titled ""Передача информации внеземными цивилизациями"" (""Transmission of Information by Extraterrestrial Civilizations""). Starting from a functional definition of civilization, based on the immutability of physical laws and using human civilization as a model for extrapolation, Kardashev's initial model was developed. He proposed a classification of civilizations into three types, based on the ax",0.0,live_api,pick the best possible answer: what is emissivity? carefully.,3564583556
+1296,Pick the best possible answer: What is the main advantage of ferroelectric memristors? from the following choices.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,No match found.,0.0,live_api,pick the best possible answer: what is the main advantage of ferroelectric memristors? from the following choices.,2330760282
+1297,Which of the following is correct? What is the SI unit of the physical quantity m/Q?,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.5555555555555556,local,which of the following is correct? what is the si unit of the physical quantity m/q?,950440461
+1298,Choose the correct answer: What is the synapstor or synapse transistor? carefully.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term depression for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and inactivity-based forgetting.,E,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.375,local,choose the correct answer: what is the synapstor or synapse transistor? carefully.,91381214
+1299,Choose the correct answer: What is the result of the collapse of a cavitation bubble?,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a reduce in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp raise in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+The process of bubble generation, and the subsequent growth and collapse of the cavitation bubbles, results in very high energy densities and in very high local temperatures and local pressures at the surface of the bubbles for a very short time.  The overall liquid medium environment, therefore, remains at ambient conditions.  When uncontrolled, cavitation is damaging; by controlling the flow of the cavitation, however, the power can be harnessed and non-destructive.  Controlled cavitation can be used to enhance chemical reactions or propagate certain unexpected reactions because free radicals are generated in the process due to disassociation of vapors trapped in the cavitating bubbles.",0.5714285714285714,local,choose the correct answer: what is the result of the collapse of a cavitation bubble?,104072894
+1300,"Which of the following is correct? What is the concept of simultaneity in Einstein's book, Relativity? carefully.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.",0.7,local,"which of the following is correct? what is the concept of simultaneity in einstein's book, relativity? carefully.",363793072
+1301,Which of the following is correct? What is Hesse's principle of transfer in geometry? based on the given context.,Hesse's principle of transfer is a concept in biology that explains the transfer of genetic information from one generation to another.,Hesse's principle of transfer is a concept in chemistry that explains the transfer of electrons between atoms in a chemical reaction.,Hesse's principle of transfer is a concept in physics that explains the transfer of energy from one object to another.,Hesse's principle of transfer is a concept in economics that explains the transfer of wealth from one individual to another.,"Hesse's principle of transfer is a concept in geometry that states that if the points of the projective line P1 are depicted by a rational normal curve in Pn, then the group of the projective transformations of Pn that preserve the curve is isomorphic to the group of the projective transformations of P1.",E,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In analytic geometry, the plane is given a coordinate system, by which every point has a pair of real number coordinates. Similarly, Euclidean space is given coordinates where every point has three coordinates. The value of the coordinates depends on the choice of the initial point of origin. There are a variety of coordinate systems used, but the most common are the following:Stewart, James (2008). Calculus: Early Transcendentals, 6th ed., Brooks Cole Cengage Learning.
+
+Other biblical figures
+Apart from the king (or kings) of Gerar, the Bible also records this name for:
+The father of Abiathar, and high priest in the time of David. In the parallel passage, the name is given as Ahimelech; most authorities consider this the more correct reading.
+The king of Gath better known as Achish, referred to as Abimelech or Achimelech in the title of Psalm 34.
+The husband of Naomi, and father of Mahlon and Chilion who leaves Bethlehem and dies in the land of Moab, in the Hebrew, his name is given as Elimelek, which is likely the correct reading.",0.6363636363636364,local,which of the following is correct? what is hesse's principle of transfer in geometry? based on the given context.,1318777468
+1302,"Choose the correct answer: What is the ""ultraviolet catastrophe""? among the listed options.",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven principle about the distribution of electromagnetic radiation.,B,"Peter Andreas Thiel ( ; born 11 October 1967) is a German-American entrepreneur, venture capitalist, and conservative political activist. A co-founder of PayPal (1998), Palantir Technologies (2003), and Founders Fund (2005), he was also the first outside investor in Facebook (2004). According to The New York Times, as of December 2025, Thiel's estimated net worth stood at US$27.5 billion, placing him among the 100 richest individuals in the world.
+Born in Germany, Thiel was taken to the US by his parents when he was one year old. In 1971, his family moved to South Africa, then South West Africa, before moving back to the US in 1977. After graduating from Stanford University, Thiel worked as a clerk, a securities lawyer, a speechwriter, and a derivatives trader at Credit Suisse. He founded Thiel Capital Management in 1996 and co-founded PayPal with Max Levchin and Luke Nosek in 1998. He was PayPal's chief executive officer until its sale to eBay in 2002 for $1.5 billion.
+Thiel then foun",0.125,live_api,"choose the correct answer: what is the ""ultraviolet catastrophe""? among the listed options.",1843324147
+1303,Choose the correct answer: Which of the following is an accurate definition of dynamic scaling in self-similar frameworks?,"Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar structures, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar frameworks, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.3333333333333333,local,choose the correct answer: which of the following is an accurate definition of dynamic scaling in self-similar frameworks?,812519915
+1304,Identify the correct statement: What is the cause of the observed change in the periods of moons orbiting a distant planet when measured from Earth?,"The variation in the size of the planet's moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the variation in distance being the diameter of the Earth's orbit around the Sun.","The variation in the speed of light when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the variation in distance being the diameter of the Earth's orbit around the Sun.","The variation in distance travelled by light from the planet (or its moon) to Earth when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the variation in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the atmospheric conditions of the planet when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the gravitational pull of the planet on its moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.",C,"The Moon is a relatively large, terrestrial, planet-like natural satellite, with a diameter about one-quarter of Earth's. It is the largest moon in the Solar System relative to the size of its planet, although Charon is larger relative to the dwarf planet Pluto. The natural satellites of other planets are also referred to as ""moons"", after Earth's. The Moon and Earth orbit a common barycenter every 27.32 days relative to the background stars. When combined with the Earth–Moon system's common orbit around the Sun, the period of the synodic month, from new moon to new moon, is 29.53 days.
+
+Galileo used  for  (Latin: I have observed the most distant planet to have a triple form) for discovering the rings of Saturn in 1610. Galileo announced his discovery that Venus had phases like the Moon in the form  (Latin: These immature ones have already been read in vain by me -oy), that is, when rearranged,  (Latin: The Mother of Loves [= Venus] imitates the figures of Cynthia [= the moon]). In both cases, Johannes Kepler had solved the anagrams incorrectly, assuming they were talking about the Moons of Mars () and a red spot on Jupiter (), respectively. By coincidence, he turned out to be right about the actual objects existing.
+
+Indirect methods 
+ Transit method
+ Radial velocity or Doppler method
+ As a planet orbits a star, the star also moves in its own small orbit around the system's center of mass. Variations in the star's radial velocity—that is, the speed with which it moves towards or away from Earth—can be detected from displacements in the star's spectral lines due to the Doppler effect. Extremely small radial-velocity variations can be observed, of 1 m/s or even somewhat less.
+ Transit timing variation (TTV)
+When multiple planets are present, each one slightly perturbs the others' orbits. Small variations in the times of transit for one planet can thus indicate the presence of another planet, which itself may or may not transit. For example, variations in the transits of the planet Kepler-19b suggest the existence of a second planet in the system, the non-transiting Kepler-19c.Planet Hunting: Finding Earth-like Planets . Scientific Computing. 19 July 2010
+ Transit duration variation (TDV)
+ Gravitational microlensing
+Microlensing occurs when the gravitational field of a star acts like a lens, magnifying the light of a distant background star. Planets orbiting the lensing star can cause detectable anomalies in magnification as it varies over time. Unlike most other methods which have a detection bias towards planets with small (or for resolved imaging, large) orbits, the microlensing method is most sensitive to detecting planets around 1–10 AU away from Sun-like stars.
+ Astrometry
+alt=|thumb|A planet is able to gravitationally pull its host star Astrometry consists of precisely measuring a star's position in the sky and observing the changes in that position over time. The motion of a star due to the gravitational influence of a planet may be observable. Because the motion is so small, however, this method was not very productive until the 2020s. It has produced only a few confirmed discoveries, though it has been successfully used to investigate the properties of planets found in other ways.
+ Pulsar timing
+A pulsar, a small, dense remnant of a star that has exploded as a supernova, emits radio waves regularly as it rotates. If planets orbit the pulsar, the motion of the pulsar around the system's center of mass alters the pulsar's distance to Earth over time. As a result, the radio pulses from the pulsar arrive on Earth at a later or earlier time. This light travel delay due to the pulsar being physically closer or farther from Earth is known as a Roemer time delay. The first confirmed discovery of an extrasolar planet was made using this method. But as of 2011, it has not been very productive; five planets have been detected in this way, around three different pulsars.
+ Variable star timing (pulsation frequency)
+Like pulsars, there are some other types of stars which exhibit periodic activity. Deviations from periodicity can sometimes be caused by a planet orbiting it. As of 2013, a few planets have been discovered with this method.
+ Reflection/emission modulations
+When a planet orbits very close to a star, it catches a considerable amount of starlight. As the planet orbits the star, the amount of light changes due to planets having phases from Earth's viewpoint or planets glowing more from one side than the other due to temperature differences.
+ Relativistic beaming
+Relativistic beaming measures the observed flux from the star due to its motion. The brightness of the star changes as the planet moves closer or further away from its host star.
+ Ellipsoidal variations
+Massive planets close to their host stars can slightly deform the shape of the star. This causes the brightness of the star to slightly deviate depending on how it is rotated relative to Earth.
+ Polarimetry
+With the polarimetry method, a polarized light reflected off the planet is separated from unpolarized light emitted from the star. No new planets have been discovered with this method, although a few already discovered planets have been detected with this method.
+ Circumstellar disks
+Disks of space dust surround many stars, thought to originate from collisions among asteroids and comets. The dust can be detected because it absorbs starlight and re-emits it as infrared radiation. Features on the disks may suggest the presence of planets, though this is not considered a definitive detection method.",0.5714285714285714,local,identify the correct statement: what is the cause of the observed change in the periods of moons orbiting a distant planet when measured from earth?,1238347253
+1305,Identify the correct statement: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level?,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,identify the correct statement: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level?,1912098431
+1306,Pick the best possible answer: What is reciprocal length or inverse length? carefully.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.4444444444444444,local,pick the best possible answer: what is reciprocal length or inverse length? carefully.,678525966
+1307,Identify the correct statement: What is bollard pull primarily used for measuring?,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,"This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: ""sailor"", from naus: ""ship"".
+Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article. Terms used in other fields associated with bodies of water can be found at Glossary of fishery terms, Glossary of underwater diving terminology, Glossary of rowing terms, and Glossary of meteorology.",0.125,live_api,identify the correct statement: what is bollard pull primarily used for measuring?,1893526678
+1308,"Select the most accurate option: Who proposed the concept of ""maximal acceleration""? based on the given context.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.0,live_api,"select the most accurate option: who proposed the concept of ""maximal acceleration""? based on the given context.",1399878023
+1309,What is the SI unit of the physical quantity m/Q?,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.8333333333333334,local,what is the si unit of the physical quantity m/q?,1418792843
+1310,Pick the best possible answer: What is the variation between active and passive transport in cells? based on the given context.,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.3076923076923077,local,pick the best possible answer: what is the variation between active and passive transport in cells? based on the given context.,2744934657
+1311,Which of the following is correct? What is the purpose of the proximity-focusing design in a RICH detector?,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+The new design used a simple load–store architecture which would reemerge in the RISC designs in the 1980s. Because the complexity of a flip-flop was being rapidly reduced as they were implemented in chips, the design offset the lack of addressing modes of the load–store design by adding four general-purpose accumulators, instead of the single register that would be found in similar low-cost offerings like the PDP series.
+
+The field of concurrent and distributed computing studies similar questions in the case of either multiple computers, or a computer that executes a network of interacting processes: which computational problems can be solved in such a network and how efficiently? However, it is not at all obvious what is meant by ""solving a problem"" in the case of a concurrent or distributed system: for example, what is the task of the algorithm designer, and what is the concurrent or distributed equivalent of a sequential general-purpose computer?",0.4444444444444444,local,which of the following is correct? what is the purpose of the proximity-focusing design in a rich detector?,3261097580
+1312,"Which of the following is correct? What are amorphous ferromagnetic metallic alloys, and what are their advantages? carefully.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,"Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen is most often an ultrathin section less than 100 nm thick or a suspension on a grid. An image is formed from the interaction of the electrons with the sample as the beam is transmitted through the specimen. The image is then magnified and focused onto an imaging device, such as a fluorescent screen, a layer of photographic film, or a detector such as a scintillator attached to a charge-coupled device or a direct electron detector.
+Transmission electron microscopes are capable of imaging at a significantly higher resolution than light microscopes, owing to the smaller de Broglie wavelength of electrons. This enables the instrument to capture fine detail—even as small as a single column of atoms, which is thousands of times smaller than a resolvable object seen in a light microscope. Transmission electron microscopy is a major anal",0.1,live_api,"which of the following is correct? what are amorphous ferromagnetic metallic alloys, and what are their advantages? carefully.",812391607
+1313,Pick the best possible answer: What is the propagation constant in sinusoidal waves?,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"In the absence of obstacles, the Huygens's principle alone predicts wavefront propagation. When some of the secondary waves are blocked by an obstacle, the remainder will create both wavefront propagation in the unblocked direction and waves behind the obstacle which form the diffraction pattern.
+
+Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+The central stage in the acoustical process is wave propagation. This falls within the domain of physical acoustics. In fluids, sound propagates primarily as a pressure wave. In solids, mechanical waves can take many forms including longitudinal waves, transverse waves and surface waves.",0.375,local,pick the best possible answer: what is the propagation constant in sinusoidal waves?,841628966
+1314,"Which of the following is correct? Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.","MOND is a concept that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a concept that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a concept that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"which of the following is correct? which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? based on the given context.",2558558155
+1315,Determine the correct option: What is water hammer? based on the given context.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing structures.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to enhance the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,determine the correct option: what is water hammer? based on the given context.,3904649293
+1316,Select the most accurate option: What is radiosity in radiometry? among the listed options.,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,No match found.,0.0,live_api,select the most accurate option: what is radiosity in radiometry? among the listed options.,2708305951
+1317,"Select the most accurate option: What is the reason behind the designation of Class L dwarfs, and what is their color and composition? carefully.","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"An asteroid is a minor planet—an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified comet—that orbits within the inner Solar System or is co-orbital with Jupiter (Trojan asteroids). Asteroids are rocky, metallic, or icy bodies with no atmosphere, and are broadly classified into C-type (carbonaceous), M-type (metallic), or S-type (silicaceous). The size and shape of asteroids vary significantly, ranging from small rubble piles under a kilometer across to Ceres, a dwarf planet almost 1000 km in diameter. A body is classified as a comet, not an asteroid, if it shows a coma (tail) when warmed by solar radiation, although recent observations suggest a continuum between these types of bodies.
+Of the roughly one million known asteroids, the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 astronomical units (AU) from the Sun, in a region known as the main asteroid belt. The total mass of all the asteroids",0.0,live_api,"select the most accurate option: what is the reason behind the designation of class l dwarfs, and what is their color and composition? carefully.",2311191486
+1318,Select the most accurate option: What is the significance of the redshift-distance relationship in determining the expansion history of the universe? among the listed options.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+Measurements of the redshift–magnitude relation for type Ia supernovae indicate that the expansion of the universe has been accelerating since the universe was about half its present age. To explain this acceleration, cosmological models require that much of the energy in the universe consists of a component with large negative pressure, dubbed ""dark energy"".",0.4,local,select the most accurate option: what is the significance of the redshift-distance relationship in determining the expansion history of the universe? among the listed options.,4197972912
+1319,Select the most accurate option: What are coherent turbulent structures? carefully.,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the procedures of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the techniques of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the approachs of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the procedures of time-averaged statistics cannot be applied.",C,"Development communication refers to the use of communication to facilitate social development. Development communication engages stakeholders and policy makers, establishes conducive environments, assesses risks and opportunities and promotes information exchange to create positive social change via sustainable development. Development communication techniques include information dissemination and education, behavior change, social marketing, social mobilization, media advocacy, communication for social change, and community participation.
+
+Development communication has been labeled as the ""Fifth Theory of the Press"", with ""social transformation and development"", and ""the fulfillment of basic needs"" as its primary purposes. Jamias articulated the philosophy of development communication which is anchored on three main ideas. Their three main ideas are: purposive, value-laden, and pragmatic. Nora C. Quebral expanded the definition, calling it ""the art and science of human communication a",0.0,live_api,select the most accurate option: what are coherent turbulent structures? carefully.,3685514451
+1320,Select the most accurate option: What is a light-year? among the listed options.,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"Initially, most new graduate students are assigned a temporary advisor, allowing time to select a permanent advisor. To aid in this, some graduate options include rotations in research labs, facilitating a better match with faculty research groups that align with the students' scientific interests. Up to three rotations in the first year are allowed in some options.
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+Common derivative contract
+Some of the common variants of derivative contracts are as follows:
+ Forwards: tailored contract between two parties, where payment takes place at a specific time in the future at today's pre-determined price.
+ Futures: contracts to buy or sell an asset on a future date at a price specified today. A futures contract differs from a forward contract in that the futures contract is a standardized contract written by a clearing house that operates an exchange where the contract can be bought and sold; the forward contract is a non-standardized contract written by the parties themselves.
+ Options: contracts that give the owner the right, but not the obligation, to buy (in the case of a call option) or sell (in the case of a put option) an asset. The price at which the sale takes place is known as the strike price, and is specified at the time the parties enter into the option. The option contract also specifies a maturity date. In the case of a European option, the owner has the right to require the sale to take place on (but not before) the maturity date; in the case of an American option, the owner can require the sale to take place at any time up to the maturity date. If the owner of the contract exercises this right, the counter-party has the obligation to carry out the transaction. Options are of two types: call option and put option.
+ Binary options: contracts that provide the owner with an all-or-nothing profit profile.
+ Warrants: apart from the commonly used short-dated options which have a maximum maturity period of one year, there exist certain long-dated options as well, known as warrants. These are generally traded over the counter.
+ Swaps: contracts to exchange cash (flows) on or before a specified future date based on the underlying value of currencies exchange rates, bonds/interest rates, commodities exchange, stocks or other assets.
+Swaps can basically be categorized into Interest rate swap and currency swap.
+Some common examples of these derivatives are the following:",0.5555555555555556,local,select the most accurate option: what is a light-year? among the listed options.,2435153886
+1321,Pick the best possible answer: What are permutation-inversion groups?,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"A breakthrough in the best known theoretical algorithm for the graph isomorphism problem in 1982
+The Schreier conjecture
+The Signalizer functor theorem
+The B conjecture
+The Schur–Zassenhaus theorem for all groups (though this only uses the Feit–Thompson theorem).
+A transitive permutation group on a finite set with more than 1 element has a fixed-point-free element of prime power order.
+The classification of 2-transitive permutation groups.
+The classification of rank 3 permutation groups.
+The Sims conjecture
+Frobenius's conjecture on the number of solutions of .
+ Non-abelian finite simple groups are characterized by their commuting graphs.",0.42857142857142855,local,pick the best possible answer: what are permutation-inversion groups?,3285435913
+1322,Select the most accurate option: What is a trophic level in an ecological pyramid? among the listed options.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecoframework.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecomechanism.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.",0.45454545454545453,local,select the most accurate option: what is a trophic level in an ecological pyramid? among the listed options.,180857372
+1323,Choose the correct answer: What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? among the listed options.,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,choose the correct answer: what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? among the listed options.,115201855
+1324,Pick the best possible answer: Which of the following statements accurately describes the origin and significance of the triskeles symbol? from the following choices.,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,"BDSM is a variety of often erotic practices or roleplaying involving bondage, discipline, dominance and submission, sadomasochism, and other related interpersonal dynamics. Given the wide range of practices, some of which may be engaged in by people who do not consider themselves to be practising BDSM, inclusion in the BDSM community or subculture often is said to depend on self-identification and shared experience.
+The initialism BDSM is first recorded in a Usenet post from 1991, and is interpreted as a combination of the abbreviations B/D (Bondage and Discipline), D/s (Dominance and submission), and S/M (Sadism and Masochism). BDSM is used as a catch-all phrase covering a wide range of activities, forms of interpersonal relationships, and distinct subcultures. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, body modification enthusiasts, animal roleplayers, rubber fetishists, and others.
+Activit",0.07142857142857142,live_api,pick the best possible answer: which of the following statements accurately describes the origin and significance of the triskeles symbol? from the following choices.,1344527742
+1325,Pick the best possible answer: What is the variation between redshift due to the expansion of the universe and Doppler redshift? from the following choices.,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the raise of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no distinction between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the enhance of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.46153846153846156,local,pick the best possible answer: what is the variation between redshift due to the expansion of the universe and doppler redshift? from the following choices.,560108121
+1326,Select the most accurate option: What is a virtual particle? based on the given context.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"Virtual drums
+Virtual drums are a type of audio software that simulates the sound of a drum kit using synthesized drum kit sounds or digital samples of acoustic drum sounds. Different drum software products offer a recording function, the ability to select from several acoustically distinctive drum kits (e.g., jazz, rock, metal), as well as the option to incorporate different songs into the session. Some computer software can turn any hard surface into a virtual drum kit using only one microphone.
+
+When a pair of virtual particles (such as an electron and positron) is created in the vicinity of the event horizon, random spatial positioning might result in one of them to appear on the exterior; this process is called quantum tunnelling. The gravitational potential of the black hole can then supply the energy that transforms this virtual particle into a real particle, allowing it to radiate away into space. In exchange, the other member of the pair is given negative energy, which results in a net loss of mass–energy by the black hole. The rate of Hawking radiation increases with decreasing mass, eventually causing the black hole to evaporate away until, finally, it explodes.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.7777777777777778,local,select the most accurate option: what is a virtual particle? based on the given context.,1906574068
+1327,Select the most accurate option: What was the aim of the Gravity Probe B (GP-B) mission? carefully.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,No match found.,0.0,live_api,select the most accurate option: what was the aim of the gravity probe b (gp-b) mission? carefully.,1152926133
+1328,Pick the best possible answer: What is the proper distance for a redshift of 8.2? based on the given context.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Yet the reason for the redshift remained unclear. Georges Lemaître predicted on theoretical grounds based on Einstein's equations for general relativity the redshift-distance relation, and published observational support for it, two years before the discovery of Hubble's law. Although he used the term ""velocities"" in his paper (and ""apparent radial velocities"" in the introduction), he later expressed doubt about interpreting these as real velocities. In 1931, he wrote a letter to the Dutch cosmologist Willem de Sitter expressing his opinion on the theoretical interpretation of the redshift-distance relation:
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.",0.3333333333333333,local,pick the best possible answer: what is the proper distance for a redshift of 8.2? based on the given context.,1821414451
+1329,Determine the correct option: What are the two main factors that cause resistance in a metal? based on the given context.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"In medicine, the etiology of an illness or condition refers to the frequent studies to determine one or more factors that come together to cause it. Relatedly, when disease is widespread, epidemiological studies investigate what associated factors, such as location, sex, exposure to chemicals, and many others, make a population more or less likely to have an illness, condition, or disease, thus helping determine its etiology. Sometimes determining etiology is an imprecise process. In the past, the etiology of a common sailor's disease, scurvy, was long unknown. When large, ocean-going ships were built, sailors began to put to sea for long periods of time, and often lacked fresh fruit and vegetables. Without knowing the precise cause, Captain James Cook suspected scurvy was caused by the lack of vegetables in the diet. Based on his suspicion, he forced his crew to eat sauerkraut, a cabbage preparation, every day, and based upon the positive outcomes, he inferred that it prevented scurvy, even though he did not know precisely why. It took about another two hundred years to discover the precise etiology: the lack of vitamin C in a sailor's diet.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.",0.6923076923076923,local,determine the correct option: what are the two main factors that cause resistance in a metal? based on the given context.,1107651752
+1330,Who was Giordano Bruno?,A German philosopher who supported the Keplerian theory that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic theory that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian theory that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican theory that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean theory that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""
+
+The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8
+
+In the sixteenth century, the Italian philosopher Giordano Bruno, an early supporter of the Copernican theory that Earth and other planets orbit the Sun (heliocentrism), put forward the view that fixed stars are similar to the Sun and are likewise accompanied by planets.",1.0,local,who was giordano bruno?,2845232321
+1331,Choose the correct answer: How many crystallographic point groups are there in three-dimensional space? among the listed options.,7,32,14,5,27,B,No match found.,0.0,live_api,choose the correct answer: how many crystallographic point groups are there in three-dimensional space? among the listed options.,3518889800
+1332,Which of the following is correct? What is geometric quantization in mathematical physics? among the listed options.,Geometric quantization is a mathematical approach to defining a classical framework corresponding to a given quantum framework. It attempts to carry out quantization in such a way that certain analogies between the quantum framework and the classical framework are lost.,Geometric quantization is a mathematical approach to defining a quantum framework corresponding to a given classical framework. It attempts to carry out quantization in such a way that certain analogies between the classical framework and the quantum framework are lost.,Geometric quantization is a mathematical approach to defining a classical principle corresponding to a given quantum principle. It attempts to carry out quantization in such a way that certain analogies between the quantum principle and the classical principle remain manifest.,Geometric quantization is a mathematical approach to defining a quantum principle corresponding to a given classical principle. It attempts to carry out quantization in such a way that certain analogies between the classical principle and the quantum principle are not key.,Geometric quantization is a mathematical approach to defining a quantum principle corresponding to a given classical principle. It attempts to carry out quantization in such a way that certain analogies between the classical principle and the quantum principle remain manifest.,E,"Gauge theory is the study of connections on vector bundles and principal bundles, and arises out of problems in mathematical physics and physical gauge theories which underpin the standard model of particle physics. Gauge theory is concerned with the study of differential equations for connections on bundles, and the resulting geometric moduli spaces of solutions to these equations as well as the invariants that may be derived from them. These equations often arise as the Euler–Lagrange equations describing the equations of motion of certain physical systems in quantum field theory, and so their study is of considerable interest in physics.",0.4,local,which of the following is correct? what is geometric quantization in mathematical physics? among the listed options.,670912808
+1333,What is the role of axioms in a formal theory?,"Basis statements called axioms form the foundation of a formal theory and, together with the deducing rules, help in deriving a set of statements called theorems using proof theory.",Axioms are supplementary statements added to a formal theory that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal theory, providing additional perspective to theorems derived from the theory.",The axioms in a theory are used for experimental validation of the theorems derived from the statements in the theory.,"The axioms in a formal theory are added to prove that the statements derived from the theory are true, irrespective of their validity in the real world.",A,"Non-logical axioms
+Non-logical axioms are formulas that play the role of theory-specific assumptions. Reasoning about two different structures, for example, the natural numbers and the integers, may involve the same logical axioms; the non-logical axioms aim to capture what is special about a particular structure (or set of structures, such as groups). Thus non-logical axioms, unlike logical axioms, are not tautologies. Another name for a non-logical axiom is postulate.Mendelson, ""3. First-Order Theories: Proper Axioms"" of Ch. 2
+
+Non-logical axioms may also be called ""postulates"", ""assumptions"" or ""proper axioms"". In most cases, a non-logical axiom is simply a formal logical expression used in deduction to build a mathematical theory, and might or might not be self-evident in nature (e.g., the parallel postulate in Euclidean geometry). To axiomatize a system of knowledge is to show that its claims can be derived from a small, well-understood set of sentences (the axioms), and there are typically many ways to axiomatize a given mathematical domain.
+
+The ontological correlate to the third stratum is the ""theory of manifolds"". In formal ontology, it is a free investigation where a mathematician can assign several meanings to several symbols, and all their possible valid deductions in a general and indeterminate manner. It is, properly speaking, the most universal mathematics of all. Through the positing of certain indeterminate objects (formal-ontological categories) as well as any combination of mathematical axioms, mathematicians can explore the apodeictic connections between them, as long as consistency is preserved.",1.0,local,what is the role of axioms in a formal theory?,3014483339
+1334,Pick the best possible answer: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere? from the following choices.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,pick the best possible answer: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere? from the following choices.,1567922493
+1335,Identify the correct statement: What is the reason for the sun appearing slightly yellowish when viewed from Earth? from the following choices.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,"The list of Babylon 5 characters contains characters from the entire Babylon 5 universe. In the Babylon 5 television show, the Babylon space stations are conceived as sites of diplomacy and cultural exchange. There are five dominant civilizations represented in the Babylon 5 universe: Humans (also known as ""Earthers""), Narn, Centauri, Minbari and Vorlons; and several dozen less powerful ones. A number of the less powerful races make up the League of Non-Aligned Worlds, which assembled as a result of the Dilgar War occurring 30 years before the start of the series.",0.0,live_api,identify the correct statement: what is the reason for the sun appearing slightly yellowish when viewed from earth? from the following choices.,3293719758
+1336,Determine the correct option: What is the SI unit of the physical quantity m/Q?,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.5555555555555556,local,determine the correct option: what is the si unit of the physical quantity m/q?,3105532470
+1337,Identify the correct statement: What is the significance of the redshift-distance relationship in determining the expansion history of the universe? from the following choices.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+Measurements of the redshift–magnitude relation for type Ia supernovae indicate that the expansion of the universe has been accelerating since the universe was about half its present age. To explain this acceleration, cosmological models require that much of the energy in the universe consists of a component with large negative pressure, dubbed ""dark energy"".",0.38461538461538464,local,identify the correct statement: what is the significance of the redshift-distance relationship in determining the expansion history of the universe? from the following choices.,3266795934
+1338,Choose the correct answer: What is the Optical Signal-to-Noise Ratio (OSNR)? based on the given context.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in frameworks where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.36363636363636365,local,choose the correct answer: what is the optical signal-to-noise ratio (osnr)? based on the given context.,1704185985
+1339,Pick the best possible answer: What is the role of the Higgs boson in the Standard Model?,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.4444444444444444,local,pick the best possible answer: what is the role of the higgs boson in the standard model?,3879975857
+1340,Pick the best possible answer: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics?,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,pick the best possible answer: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics?,3348793408
+1341,"Determine the correct option: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? from the following choices.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,The following scientific events occurred in 2023.,0.05263157894736842,live_api,"determine the correct option: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? from the following choices.",995694463
+1342,Determine the correct option: What is the definition of Atomristor?,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+The next step is to use the definition of differentiability of f at g(a). This requires a term of the form  for some k. In the above equation, the correct k varies with h. Set  and the right hand side becomes . Applying the definition of the derivative gives:
+
+The definition depends on the distinction between simulating a mind and actually having one. Searle writes that ""according to Strong AI, the correct simulation really is a mind. According to Weak AI, the correct simulation is a model of the mind.""",0.4,local,determine the correct option: what is the definition of atomristor?,3626535075
+1343,Determine the correct option: What is the fate of a carbocation formed in crystalline naphthalene?,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,No match found.,0.0,live_api,determine the correct option: what is the fate of a carbocation formed in crystalline naphthalene?,1962389690
+1344,Identify the correct statement: What was the aim of the Gravity Probe B (GP-B) mission? from the following choices.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"On the American late-night live television sketch comedy and variety show Saturday Night Live (SNL), a commercial advertisement parody is commonly shown after the host's opening monologue. Many of the parodies were produced by James Signorelli.  The industries, products, and ad formats targeted by the parodies have been wide-ranging, including fast food, beer, feminine hygiene products, toys, clothes, medications (both prescription and over-the-counter), financial institutions, automobiles, electronics, appliances, public-service announcements, infomercials, and movie & TV shows (including SNL itself).
+Many of SNL's ad parodies have been featured in prime-time clip shows over the years, including an April 1991 special hosted by Kevin Nealon and Victoria Jackson, as well as an early 1999 follow-up hosted by Will Ferrell that features his attempts to audition for a feminine hygiene commercial.  In late 2005 and in March 2009, the special was modernized, featuring commercials created sinc",0.08333333333333333,live_api,identify the correct statement: what was the aim of the gravity probe b (gp-b) mission? from the following choices.,2176844388
+1345,Pick the best possible answer: What is the gravitomagnetic interaction? from the following choices.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general concept of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Non-deterministic computation
+In a non-deterministic model of computation, such as non-deterministic Turing machines, some choices may be made at some steps of the computation. In complexity theory, one considers all possible choices simultaneously, and the non-deterministic time complexity is the time needed, when the best choices are always made. In other words, one considers that the computation is done simultaneously on as many (identical) processors as needed, and the non-deterministic computation time is the time spent by the first processor that finishes the computation. This parallelism is partly amenable to quantum computing via superposed entangled states in running specific quantum algorithms, like e.g. Shor's algorithm for finding the prime factors of an integer.
+
+Following each question, the candidate answers: ""Yes, I believe"". If the candidates are unable to answer for themselves, the sponsors are to answer the questions.
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by",0.625,local,pick the best possible answer: what is the gravitomagnetic interaction? from the following choices.,3590305480
+1346,Choose the correct answer: What is the application of Memristor? from the following choices.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control mechanisms, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Such questions can be answered jes (yes) or ne (no) in the European fashion of aligning with the polarity of the answer, or ĝuste (correct) or malĝuste (incorrect) in the Japanese fashion of aligning with the polarity of the question:
+
+Alternative notations include , , , , , and , in all of which the  stands for combinations or choices; the  notation means the number of ways to choose k out of n objects. Many calculators use variants of the  because they can represent it on a single-line display. In this form the binomial coefficients are easily compared to the numbers of -permutations of , written as , etc.",0.5714285714285714,local,choose the correct answer: what is the application of memristor? from the following choices.,739614783
+1347,Identify the correct statement: What is the piezoelectric strain coefficient for AT-cut quartz crystals? from the following choices.,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,No match found.,0.0,live_api,identify the correct statement: what is the piezoelectric strain coefficient for at-cut quartz crystals? from the following choices.,2642044307
+1348,Identify the correct statement: What is the second law of thermodynamics? carefully.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated mechanisms left to spontaneous evolution can minimize, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic framework and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"For the foundations of thermodynamics, the conceptual importance of this was emphasized by Bryan, by Carathéodory, and by Born. The reason is that calorimetry presupposes a type of temperature as already defined before the statement of the first law of thermodynamics, such as one based on empirical scales. Such a presupposition involves making the distinction between empirical temperature and absolute temperature. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis.
+
+Clausius–Duhem inequality
+The Clausius–Duhem inequality can be used to express the second law of thermodynamics for elastic-plastic materials.  This inequality is a statement concerning the irreversibility of natural processes, especially when energy dissipation is involved.
+
+Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.",0.5714285714285714,local,identify the correct statement: what is the second law of thermodynamics? carefully.,1577791946
+1349,Determine the correct option: What is the Evans balance? based on the given context.,"The Evans balance is a structure used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a mechanism used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a mechanism used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a mechanism used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a framework used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Estimation theory is concerned with the properties of estimators; that is, with defining properties that can be used to compare different estimators (different rules for creating estimates) for the same quantity, based on the same data. Such properties can be used to determine the best rules to use under given circumstances. However, in robust statistics, statistical theory goes on to consider the balance between having good properties, if tightly defined assumptions hold, and having worse properties that hold under wider conditions.",0.75,local,determine the correct option: what is the evans balance? based on the given context.,1147194668
+1350,Pick the best possible answer: What is reciprocal length or inverse length? based on the given context.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).
+
+where  is the attenuation at a given wavelength ,  is the particle concentration as a number density, and  is the path length. The absorbance of the radiation is the logarithm (decadic or, more usually, natural) of the reciprocal of the transmittance :",0.45454545454545453,local,pick the best possible answer: what is reciprocal length or inverse length? based on the given context.,1945851827
+1351,Identify the correct statement: What is the application of Memristor? among the listed options.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control structures, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.25,local,identify the correct statement: what is the application of memristor? among the listed options.,1717628622
+1352,Determine the correct option: What is the SI base unit of time and how is it defined? based on the given context.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).",0.5454545454545454,local,determine the correct option: what is the si base unit of time and how is it defined? based on the given context.,575347141
+1353,Which of the following is correct? What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? from the following choices.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,"Quantum tunneling 
+Quantum mechanics, however, allows the alpha particle to escape via quantum tunneling. The quantum tunneling theory of alpha decay, independently developed by George Gamow and by Ronald Wilfred Gurney and Edward Condon in 1928, was hailed as a very striking confirmation of quantum theory. Essentially, the alpha particle escapes from the nucleus not by acquiring enough energy to pass over the wall confining it, but by tunneling through the wall. Gurney and Condon made the following observation in their paper on it:
+It has hitherto been necessary to postulate some special arbitrary ""instability"" of the nucleus, but in the following note, it is pointed out that disintegration is a natural consequence of the laws of quantum mechanics without any special hypothesis... Much has been written of the explosive violence with which the α-particle is hurled from its place in the nucleus. But from the process pictured above, one would rather say that the α-particle almost slips away unnoticed.
+
+These are the real-valued orbitals commonly used in chemistry. Only the  orbitals where are eigenstates of the orbital angular momentum operator, . The columns with  are combinations of two eigenstates. See comparison in the following picture: thumb|Atomic orbitals spdf m-eigenstates (right) and superpositions (left)
+
+Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.",0.5454545454545454,local,which of the following is correct? what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? from the following choices.,1486946232
+1354,Choose the correct answer: What is the significance of the redshift-distance relationship in determining the expansion history of the universe? from the following choices.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+Measurements of the redshift–magnitude relation for type Ia supernovae indicate that the expansion of the universe has been accelerating since the universe was about half its present age. To explain this acceleration, cosmological models require that much of the energy in the universe consists of a component with large negative pressure, dubbed ""dark energy"".",0.38461538461538464,local,choose the correct answer: what is the significance of the redshift-distance relationship in determining the expansion history of the universe? from the following choices.,2160742350
+1355,"Pick the best possible answer: What is a ""coffee ring"" in physics? from the following choices.",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"In 1935, Carrel's book, L'Homme, cet inconnu (Man, the Unknown), became a best-seller. The book attempted to comprehensively outline what is known, and unknown, of the human body and human life ""in light of discoveries in biology, physics, and medicine"", to shed light on the problems of the modern world, and to provide possible routes to a better life for human beings.",0.3333333333333333,local,"pick the best possible answer: what is a ""coffee ring"" in physics? from the following choices.",1554015626
+1356,Identify the correct statement: What is the Roche limit? from the following choices.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"Finite predictability in chaotic systems 
+According to Lighthill (1986), the presence of SDIC (commonly known as the butterfly effect) implies that chaotic systems have a finite predictability limit. In a literature review, it was found that Lorenz's perspective on the predictability limit can be condensed into the following statement:
+
+The orbit of Adrastea lies inside Jupiter's synchronous orbit radius (as does Metis's), and as a result, tidal forces are slowly causing its orbit to decay so that it will one day impact Jupiter. If its density is similar to Amalthea's then its orbit would actually lie within the fluid Roche limit. However, since it is not breaking up, it must still lie outside its rigid Roche limit.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",0.8571428571428571,local,identify the correct statement: what is the roche limit? from the following choices.,1473736880
+1357,Identify the correct statement: What is the Droste effect? among the listed options.,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"Christian mysticism refers to the traditions of mysticism, mystical practices and mystical theology within Christianity which ""concerns the preparation [of the person] for, the consciousness of, and the effect of [...] a direct and transformative presence of God"" or divine love. Until the sixth century the practice of what is now called mysticism was referred to by the term contemplatio, c.q. theoria, from contemplatio (Latin; Greek θεωρία, theoria), ""looking at"", ""gazing at"", ""being aware of"" God or the divine. Christianity took up the use of both the Greek (theoria) and Latin (contemplatio, contemplation) terminology to describe various forms of prayer and the process of coming to know God.
+Contemplative practices range from simple prayerful meditation of holy scripture (i.e. Lectio Divina) to contemplation on the presence of God, resulting in theosis (spiritual union with God) and ecstatic visions of the soul's mystical union with God. Three stages are discerned in contemplative pra",0.125,live_api,identify the correct statement: what is the droste effect? among the listed options.,4263589531
+1358,Determine the correct option: What is the isophotal diameter used for in measuring a galaxy's size? carefully.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.
+
+In the 2nd century CE, Ptolemy estimated the mean distance of the Sun as  times Earth's radius. To determine this value, Ptolemy started by measuring the Moon's parallax, finding what amounted to a horizontal lunar parallax of 1° 26′, which was much too large. He then derived a maximum lunar distance of  Earth radii. Because of cancelling errors in his parallax figure, his theory of the Moon's orbit, and other factors, this figure was approximately correct.van Helden 1985, pp. 16–19.Ptolemy's Almagest, translated and annotated by G. J. Toomer, London: Duckworth, 1984, p. 251. . He then measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon at the Moon's greatest distance, and from records of lunar eclipses, he estimated this apparent diameter, as well as the apparent diameter of the shadow cone of Earth traversed by the Moon during a lunar eclipse. Given these data, the distance of the Sun from Earth can be trigonometrically computed to be  Earth radii. This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure. Although Ptolemy's procedure is theoretically workable, it is very sensitive to small changes in the data, so much so that changing a measurement by a few per cent can make the solar distance infinite.",0.6363636363636364,local,determine the correct option: what is the isophotal diameter used for in measuring a galaxy's size? carefully.,3571342625
+1359,Choose the correct answer: What is the purpose of the proximity-focusing design in a RICH detector? from the following choices.,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.",0.6363636363636364,local,choose the correct answer: what is the purpose of the proximity-focusing design in a rich detector? from the following choices.,1457660608
+1360,Identify the correct statement: What is the significance of Baryon Acoustic Oscillations (BAOs) in the study of the universe? among the listed options.,"BAOs establish a preferred length scale for baryons, which can be used to detect a subtle preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130-160 Mpc.",BAOs help to determine the average temperature of the Universe by measuring the temperature of the cosmic microwave background radiation.,BAOs provide a way to measure the time it takes for a signal to reach its destination compared to the time it takes for background noise to dissipate.,BAOs can be used to make a two-dimensional map of the galaxy distribution in the Universe.,BAOs are used to measure the speed of light in the Universe.,A,"Baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe on large scales. These are predicted to arise in the Lambda-CDM model due to acoustic oscillations in the photon–baryon fluid of the early universe and can be observed in the cosmic microwave background angular power spectrum. BAOs set up a preferred length scale for baryons. As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1%) preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130–160 Mpc. This feature was predicted theoretically in the 1990s and then discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations with BAO measurements from galaxy redshift surveys provides a precise estimate of the Hubble constant and the average matter density in the Universe. The results support the Lambda-CDM model.
+
+The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping (also called collisionless damping or Silk damping). The acoustic oscillations arise because of a conflict in the photon–baryon plasma in the early universe. The pressure of the photons tends to erase anisotropies, whereas the gravitational attraction of the baryons, moving at speeds much slower than light, makes them tend to collapse to form overdensities. These two effects compete to create acoustic oscillations, which give the microwave background its characteristic peak structure. The peaks correspond, roughly, to resonances in which the photons decouple when a particular mode is at its peak amplitude.
+
+Dark energy, though speculative, solves numerous problems. Measurements of the cosmic microwave background indicate that the universe is very nearly spatially flat, and therefore according to general relativity the universe must have almost exactly the critical density of mass/energy. But the mass density of the universe can be measured from its gravitational clustering, and is found to have only about 30% of the critical density. Since theory suggests that dark energy does not cluster in the usual way it is the best explanation for the ""missing"" energy density. Dark energy also helps to explain two geometrical measures of the overall curvature of the universe, one using the frequency of gravitational lenses, and the other using the characteristic pattern of the large-scale structure--baryon acoustic oscillations--as a cosmic ruler.",0.38461538461538464,local,identify the correct statement: what is the significance of baryon acoustic oscillations (baos) in the study of the universe? among the listed options.,2895677393
+1361,Identify the correct statement: Who was the first person to describe the pulmonary circulation framework? based on the given context.,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.46153846153846156,local,identify the correct statement: who was the first person to describe the pulmonary circulation framework? based on the given context.,3217993792
+1362,Which of the following is correct? What is the most popular explanation for the shower-curtain effect? based on the given context.,The pressure differential between the inside and outside of the shower,The minimize in velocity resulting in an boost in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Other biblical figures
+Apart from the king (or kings) of Gerar, the Bible also records this name for:
+The father of Abiathar, and high priest in the time of David. In the parallel passage, the name is given as Ahimelech; most authorities consider this the more correct reading.
+The king of Gath better known as Achish, referred to as Abimelech or Achimelech in the title of Psalm 34.
+The husband of Naomi, and father of Mahlon and Chilion who leaves Bethlehem and dies in the land of Moab, in the Hebrew, his name is given as Elimelek, which is likely the correct reading.
+
+The new settlement took the name of Amphipolis (literally, ""around the city""), a name which is the subject of much debate about its etymology. Thucydides claims the name comes from the fact that the Strymon River flows ""around the city"" on two sides; however a note in the Suda (also given in the lexicon of Photius) offers a different explanation apparently given by Marsyas, son of Periander: that a large proportion of the population lived ""around the city"". However, a more probable explanation is the one given by Julius Pollux: that the name indicates the vicinity of an isthmus.",0.5833333333333334,local,which of the following is correct? what is the most popular explanation for the shower-curtain effect? based on the given context.,502457665
+1363,Choose the correct answer: What is the relationship between interstellar and cometary chemistry? among the listed options.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,No match found.,0.0,live_api,choose the correct answer: what is the relationship between interstellar and cometary chemistry? among the listed options.,2813631621
+1364,Determine the correct option: What is the significance of regularization in terms of renormalization problems in physics?,"Regularizing the mass-energy of an electron with a finite radius can theoretically simplify calculations involving infinities or singularities, thereby providing explanations that would otherwise be impossible to achieve.",Regularizing the mass-energy of an electron with an infinite radius allows for the breakdown of a framework that is valid under one set of conditions. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with a finite radius is a means of demonstrating that a mechanism below a certain size can be explained without the need for further calculations. This approach can be applied to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius can be used to provide a highly accurate description of a framework under specific conditions. This approach can be transferred to other renormalization problems as well.,Regularizing the mass-energy of an electron with an infinite radius is essential for explaining how a framework below a certain size operates. This approach can be applied to other renormalization problems as well.,C,"One of the main 'animals' mentioned in some of the bestiaries is dragons, which hold much significance in terms of religion and meaning. The unnatural part of dragon's history shows how important the church can be during this time. Much of what is covered in the article talks about how the dragon that is mentioned in some of the bestiaries shows a glimpse of the religious significance in many of these tales.
+
+Summing over all possible oscillators at all points in space gives an infinite quantity. Since only differences in energy are physically measurable (with the notable exception of gravitation, which remains beyond the scope of quantum field theory), this infinity may be considered a feature of the mathematics rather than of the physics. This argument is the underpinning of the theory of renormalization. Dealing with infinite quantities in this way was a cause of widespread unease among quantum field theorists before the development in the 1970s of the renormalization group, a mathematical formalism for scale transformations that provides a natural basis for the process.
+
+Wave mechanics 
+In January 1926, Schrödinger published in Annalen der Physik the paper """" (Quantization as an Eigenvalue Problem) on wave mechanics and presented what is now known as the Schrödinger equation. In this paper, he gave a ""derivation"" of the wave equation for time-independent systems and showed that it gave the correct energy eigenvalues for a hydrogen-like atom. This paper has been universally celebrated as one of the most important achievements of the twentieth century and created a revolution in most areas of quantum mechanics and indeed of all physics and chemistry. A second paper was submitted just four weeks later that solved the quantum harmonic oscillator, rigid rotor, and diatomic molecule problems and gave a new derivation of the Schrödinger equation. A third paper, published in May, showed the equivalence of his approach to that of Werner Heisenberg's matrix mechanics and gave the treatment of the Stark effect. A fourth paper in this series showed how to treat problems in which the system changes with time, as in scattering problems. In this paper, he introduced a complex solution to the wave equation in order to prevent the occurrence of fourth- and sixth-order differential equations. Schrödinger ultimately reduced the order of the equation to one.The Dreams That Stuff Is Made Of: The Most Astounding Papers of Quantum Physics—and How They Shook the Scientific World, Stephen Hawking, (editor), the papers by Schrödinger.",0.6666666666666666,local,determine the correct option: what is the significance of regularization in terms of renormalization problems in physics?,3752013092
+1365,"Identify the correct statement: What is the reason behind the designation of Class L dwarfs, and what is their color and composition?","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"Crystallography is useful in phase identification. When manufacturing or using a material, it is generally desirable to know what compounds and what phases are present in the material, as their composition, structure and proportions will influence the material's properties. Each phase has a characteristic arrangement of atoms. X-ray or neutron diffraction can be used to identify which structures are present in the material, and thus which compounds are present. Crystallography covers the enumeration of the symmetry patterns which can be formed by atoms in a crystal and for this reason is related to group theory.",0.3333333333333333,local,"identify the correct statement: what is the reason behind the designation of class l dwarfs, and what is their color and composition?",652331554
+1366,Pick the best possible answer: What is the relationship between Coordinated Universal Time (UTC) and Universal Time (UT1)? among the listed options.,UTC and Universal Time (UT1) are identical time scales that are used interchangeably in science and engineering.,"UTC is a time scale that is completely independent of Universal Time (UT1). UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by a non-integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by an integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".",UTC is a time scale that is based on the irregularities in Earth's rotation and is completely independent of Universal Time (UT1).,D,"The BIPM has an important role in maintaining accurate worldwide time of day. It combines, analyses, and averages the official atomic time standards of member nations around the world to create a single, official Coordinated Universal Time (UTC).
+
+Relation to UTC 
+Contrary to TAI, UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time by a constant offset. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2.  Afterwards, these adjustments were made only in whole seconds to approximate UT1. This was a compromise arrangement in order to enable a publicly broadcast time scale. The less frequent whole-second adjustments meant that the time scale would be more stable and easier to synchronize internationally. The fact that it continues to approximate UT1 means that tasks, such as navigation, which require a source of Universal Time continue to be well served by the public broadcast of UTC.",0.42857142857142855,local,pick the best possible answer: what is the relationship between coordinated universal time (utc) and universal time (ut1)? among the listed options.,1914561242
+1367,Choose the correct answer: What is the Ozma Problem? carefully.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.
+
+A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem.  Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution.  Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.5,local,choose the correct answer: what is the ozma problem? carefully.,1996011389
+1368,Choose the correct answer: Which of the following statements is true about the categorization of planetary structures according to their orbital dynamics?,Planetary structures cannot be categorized based on their orbital dynamics.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the framework.",Planetary structures can only be categorized as resonant or non-resonant-interacting.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary mechanisms can only be categorized as hierarchical or non-hierarchical.,D,"The relationship between science and religion involves discussions that interconnect the study of the natural world, history, philosophy, and theology. Even though the ancient and medieval worlds did not have conceptions resembling the modern understandings of ""science"" or of ""religion"", certain elements of modern ideas on the subject recur throughout history. The pair-structured phrases ""religion and science"" and ""science and religion"" first emerged in the literature during  the 19th century. This coincided with the refining of ""science"" (from the studies of ""natural philosophy"") and of ""religion"" as distinct concepts in the preceding few centuries—partly due to professionalization of the sciences, the Protestant Reformation, colonization, and globalization. Since then the relationship between science and religion has been characterized in terms of ""conflict"", ""harmony"", ""complexity"", and ""mutual independence"", among others.
+Both science and religion are complex social and cultural en",0.0,live_api,choose the correct answer: which of the following statements is true about the categorization of planetary structures according to their orbital dynamics?,4233831022
+1369,Pick the best possible answer: What is the main focus of the Environmental Science Center at Qatar University? carefully.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Albert Arnold Gore Jr. (born March 31, 1948) is an American politician, businessman, and environmentalist who served as the 45th vice president of the United States from 1993 to 2001 under President Bill Clinton. A member of the Democratic Party, he previously represented Tennessee in both houses of the U.S. Congress, first as a member of the U.S. House of Representatives from 1977 to 1985, and then as a U.S. senator from 1985 to 1993. Gore was the Democratic nominee in the 2000 presidential election, losing to Republican nominee George W. Bush.
+The son of politician Albert Gore Sr., Gore was raised in Tennessee and Washington, D.C., where he was born. After graduating from Harvard University and serving in the U.S. Army, he quit law school to run as a representative for Tennessee's 4th congressional district in 1976. Gore was re-elected three times before running for U.S. Senate in 1984, winning re-election in 1990. He was considered a moderate and an ""Atari Democrat"". Gore served as",0.08333333333333333,live_api,pick the best possible answer: what is the main focus of the environmental science center at qatar university? carefully.,146056651
+1370,Which of the following is correct? What is linear frame dragging?,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"Near a rotating black hole, spacetime rotates similar to a vortex. The rotating spacetime will drag any matter and light into rotation around the spinning black hole. This effect of general relativity, called frame dragging, gets stronger closer to the spinning mass. The region of spacetime in which it is impossible to stay still is called the ergosphere.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Fresnel's aether drag
+In 1818, Augustin Fresnel developed a modified explanation to account for the water telescope and for other aberration phenomena. He explained that the aether is generally at rest in the Sun's frame of reference, but objects partially drag the aether along with them as they move. That is, the aether in an object of index of refraction  moving at velocity  is partially dragged with a velocity  bringing the light along with it. This factor is known as ""Fresnel's dragging coefficient"". This dragging effect, along with refraction at the telescope's objective, compensates for the slower speed of light in the water telescope in Bradley's explanation.     With this modification Fresnel obtained Bradley's vacuum result even for non-vacuum telescopes, and was also able to predict many other phenomena related to the propagation of light in moving bodies. Fresnel's dragging coefficient became the dominant explanation of aberration for the next decades.",0.6666666666666666,local,which of the following is correct? what is linear frame dragging?,1640555264
+1371,What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching?,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching?,3992792151
+1372,Determine the correct option: What is the Maxwell's Demon thought experiment? among the listed options.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an boost in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a lower in temperature in one part and an enhance in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an enhance in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an raise in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.",C,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,determine the correct option: what is the maxwell's demon thought experiment? among the listed options.,2100380669
+1373,What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter?,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's theory of general relativity.",C,"A non-standard cosmology is any physical cosmological model of the universe that was, or still is, proposed as an alternative to the then-current standard model of cosmology. The term non-standard is applied to any theory that does not conform to the scientific consensus. Because the term depends on the prevailing consensus, the meaning of the term changes over time. For example, hot dark matter would not have been considered non-standard in 1990, but would have been in 2010. Conversely, a non-zero cosmological constant resulting in an accelerating universe would have been considered non-standard in 1990, but is part of the standard cosmology in 2010.
+
+Several major cosmological disputes have occurred throughout the history of cosmology. One of the earliest was the Copernican Revolution, which established the heliocentric model of the Solar System. More recent was the Great Debate of 1920, in the aftermath of which the Milky Way's status as but one of the Universe's many galaxies was e",0.23076923076923078,live_api,what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter?,180335131
+1374,Determine the correct option: What is the reason for recycling rare metals according to the United Nations? among the listed options.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will lower in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials. The recyclability of a material depends on its ability to reacquire the properties it had in its original state. It is an alternative to ""conventional"" waste disposal that can save material and help lower greenhouse gas emissions. It can also prevent the waste of potentially useful materials and reduce the consumption of fresh raw materials, reducing energy use, air pollution (from incineration) and water pollution (from landfilling).
+Recycling is a key component of modern waste reduction and represents the third step in the ""Reduce, Reuse, and Recycle"" waste hierarchy, contributing to environmental sustainability and resource conservation. It promotes environmental sustainability by removing raw material input and redirecting waste output in the economic system. There are some ISO standards related to recycling, such as ISO 152",0.07692307692307693,live_api,determine the correct option: what is the reason for recycling rare metals according to the united nations? among the listed options.,2198851789
+1375,Determine the correct option: What is linear frame dragging?,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.5,local,determine the correct option: what is linear frame dragging?,2112258790
+1376,Choose the correct answer: What is the distinction between illuminance and luminance? carefully.,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,No match found.,0.0,live_api,choose the correct answer: what is the distinction between illuminance and luminance? carefully.,3340139200
+1377,Select the most accurate option: What is the Minkowski diagram used for? among the listed options.,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,No match found.,0.0,live_api,select the most accurate option: what is the minkowski diagram used for? among the listed options.,4158189019
+1378,Which of the following is correct? What is the gravitomagnetic interaction? carefully.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general framework of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.
+
+Einstein never fully accepted quantum mechanics. While he recognized that it made correct predictions, he believed a more fundamental description of nature must be possible. Over the years he presented multiple arguments to this effect, but the one he preferred most dated to a debate with Bohr in 1930. Einstein suggested a thought experiment in which two objects are allowed to interact and then moved apart a great distance from each other. The quantum-mechanical description of the two objects is a mathematical entity known as a wavefunction. If the wavefunction that describes the two objects before their interaction is given, then the Schrödinger equation provides the wavefunction that describes them after their interaction. But because of what would later be called quantum entanglement, measuring one object would lead to an instantaneous change of the wavefunction describing the other object, no matter how far away it is. Moreover, the choice of which measurement to perform upon the first object would affect what wavefunction could result for the second object. Einstein reasoned that no influence could propagate from the first object to the second instantaneously fast. Indeed, he argued, physics depends on being able to tell one thing apart from another, and such instantaneous influences would call that into question. Because the true ""physical condition"" of the second object could not be immediately altered by an action done to the first, Einstein concluded, the wavefunction could not be that true physical condition, only an incomplete description of it.",0.6666666666666666,local,which of the following is correct? what is the gravitomagnetic interaction? carefully.,1877307606
+1379,Determine the correct option: What did Newton adopt after his correspondence with Hooke in 1679-1680? based on the given context.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,determine the correct option: what did newton adopt after his correspondence with hooke in 1679-1680? based on the given context.,1363374023
+1380,Which of the following is correct? What is an order parameter? among the listed options.,An order parameter is a measure of the temperature of a physical structure.,An order parameter is a measure of the gravitational force in a physical structure.,An order parameter is a measure of the magnetic field strength in a physical mechanism.,An order parameter is a measure of the degree of symmetry breaking in a physical structure.,An order parameter is a measure of the rotational symmetry in a physical framework.,D,"Without modifying the estimated parameter, cluster sampling is unbiased when the clusters are approximately the same size. In this case, the parameter is computed by combining all the selected clusters. When the clusters are of different sizes there are several options:
+
+Where  is the first order virial parameter and it depends on the temperature,  is the second order virial parameter of Morse oscillator and it depends on the  parameters of Morse oscillator in addition to the absolute temperature.  is the fractional volume of the system.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.625,local,which of the following is correct? what is an order parameter? among the listed options.,1620043904
+1381,Pick the best possible answer: What is the relationship between dielectric loss and the transparency of a material? from the following choices.,"Dielectric loss in a material can cause refraction, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can raise the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can boost the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+One economist's analysis calculates that despite increased overall spending, Christmas is a deadweight loss under orthodox microeconomic theory, because of the effect of gift-giving. This loss is calculated as the difference between what the gift giver spent on the item and what the gift receiver would have paid for the item. It is estimated that in 2001, Christmas resulted in a $4billion deadweight loss in the US alone.Joel Waldfogel ""The Deadweight Loss of Christmas"" (PDF), American Economic Review, December 1993, 83 (5). Retrieved December 25, 2023.""Is Santa a deadweight loss?"" (). The Economist December 20, 2001. Because of complicating factors, this analysis is sometimes used to discuss possible flaws in current microeconomic theory. Other deadweight losses include the effects of Christmas on the environment and the fact that material gifts are often perceived as white elephants, imposing cost for upkeep and storage and contributing to clutter.Reuters. ""Christmas is Damaging the Environment, Report Says"" , December 16, 2005.
+
+Interventions that reduce feelings of uncertainty, anxiety, or powerlessness result in a reduction in conspiracy beliefs. Other possible strategies to mitigate the effect of conspiracy theories include education, media literacy, and increasing governmental openness and transparency. Due to the relationship between conspiracy theories and political extremism, the academic literature on deradicalization is also important.",0.5833333333333334,local,pick the best possible answer: what is the relationship between dielectric loss and the transparency of a material? from the following choices.,2590968544
+1382,Which of the following is correct? What are permutation-inversion groups? from the following choices.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"A breakthrough in the best known theoretical algorithm for the graph isomorphism problem in 1982
+The Schreier conjecture
+The Signalizer functor theorem
+The B conjecture
+The Schur–Zassenhaus theorem for all groups (though this only uses the Feit–Thompson theorem).
+A transitive permutation group on a finite set with more than 1 element has a fixed-point-free element of prime power order.
+The classification of 2-transitive permutation groups.
+The classification of rank 3 permutation groups.
+The Sims conjecture
+Frobenius's conjecture on the number of solutions of .
+ Non-abelian finite simple groups are characterized by their commuting graphs.
+
+To be a bit more precise, let E be an n-bit block cipher. We imagine the following game:
+ The person running the game flips a coin.
+ If the coin lands on heads, he chooses a random key K and defines the function f = EK.
+ If the coin lands on tails, he chooses a random permutation  on the set of n-bit strings and defines the function f = .
+ The attacker chooses an n-bit string X, and the person running the game tells him the value of f(X).
+ Step 2 is repeated a total of q times. (Each of these q interactions is a query.)
+ The attacker guesses how the coin landed. He wins if his guess is correct.
+
+Over 250 ethnic groups and 450 tribes (ethnic subgroups) populate the Democratic Republic of Congo. These ethnic groups are from the Bantu, Sudanic, Nilotic, Ubangian and Pygmy linguistic groups. There is no dominant ethnic group in Congo; the following ethnic groups account for 51.5% of the population:",0.5714285714285714,local,which of the following is correct? what are permutation-inversion groups? from the following choices.,4047922861
+1383,Determine the correct option: What is the metallicity of Kapteyn's star estimated to be? among the listed options.,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.",0.3333333333333333,local,determine the correct option: what is the metallicity of kapteyn's star estimated to be? among the listed options.,3092747729
+1384,Select the most accurate option: What is the relationship between Coordinated Universal Time (UTC) and Universal Time (UT1)?,UTC and Universal Time (UT1) are identical time scales that are used interchangeably in science and engineering.,"UTC is a time scale that is completely independent of Universal Time (UT1). UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by a non-integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by an integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".",UTC is a time scale that is based on the irregularities in Earth's rotation and is completely independent of Universal Time (UT1).,D,"The BIPM has an important role in maintaining accurate worldwide time of day. It combines, analyses, and averages the official atomic time standards of member nations around the world to create a single, official Coordinated Universal Time (UTC).
+
+Relation to UTC 
+Contrary to TAI, UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time by a constant offset. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2.  Afterwards, these adjustments were made only in whole seconds to approximate UT1. This was a compromise arrangement in order to enable a publicly broadcast time scale. The less frequent whole-second adjustments meant that the time scale would be more stable and easier to synchronize internationally. The fact that it continues to approximate UT1 means that tasks, such as navigation, which require a source of Universal Time continue to be well served by the public broadcast of UTC.",0.6363636363636364,local,select the most accurate option: what is the relationship between coordinated universal time (utc) and universal time (ut1)?,3025746468
+1385,Choose the correct answer: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants?,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+Membranes
+Cholesterol is present in varying degrees in all animal cell membranes but is absent in prokaryotes. It is required to build and maintain membranes and modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group of each cholesterol molecule interacts with water molecules surrounding the membrane, as do the polar heads of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty-acid chain of the other lipids. Through the interaction with the phospholipid fatty-acid chains, cholesterol increases membrane packing, which both alters membrane fluidity and maintains membrane integrity so that animal cells do not need to build cell walls (like plants and most bacteria). The membrane remains stable and durable without being rigid, allowing animal cells to change shape and animals to move.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.4166666666666667,local,choose the correct answer: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants?,2965872805
+1386,Determine the correct option: What is the distinction between natural convection and forced convection? carefully.,"Natural convection and forced convection are the same phenomenon, where a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, causing the fluid to be less dense and displaced.",Natural convection and forced convection are two different phenomena that do not relate to each other.,"Natural convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, while forced convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps.","Natural convection is when a fluid is forced to flow over the surface by an internal source such as fans, stirring, and pumps, while forced convection occurs when a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced.","Natural convection and forced convection are the same phenomenon, where a fluid is in contact with a hot surface, causing the fluid to be less dense and displaced, and then forced to flow over the surface by an internal source such as fans, stirring, and pumps.",C,No match found.,0.0,live_api,determine the correct option: what is the distinction between natural convection and forced convection? carefully.,511429061
+1387,Determine the correct option: What is the Roche limit? carefully.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"The orbit of Adrastea lies inside Jupiter's synchronous orbit radius (as does Metis's), and as a result, tidal forces are slowly causing its orbit to decay so that it will one day impact Jupiter. If its density is similar to Amalthea's then its orbit would actually lie within the fluid Roche limit. However, since it is not breaking up, it must still lie outside its rigid Roche limit.",0.3333333333333333,local,determine the correct option: what is the roche limit? carefully.,3080192648
+1388,Determine the correct option: What is the Evans balance? from the following choices.,"The Evans balance is a structure used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a framework used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a framework used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a mechanism used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a mechanism used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"Most video and digital still cameras can adjust for color temperature by zooming into a white or neutral colored object and setting the manual ""white balance"" (telling the camera that ""this object is white""); the camera then shows true white as white and adjusts all the other colors accordingly. White-balancing is necessary especially when indoors under fluorescent lighting and when moving the camera from one lighting situation to another. Most cameras also have an automatic white balance function that attempts to determine the color of the light and correct accordingly. While these settings were once unreliable, they are much improved in today's digital cameras and produce an accurate white balance in a wide variety of lighting situations.
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:
+
+Issues with deferred posting of offline debit
+The consumer perceives a debit transaction as occurring in real time: the money is withdrawn from their account immediately after the authorization request from the merchant.""a tool to keep you from spending more than their balance."" In many countries, this is correct for online debit purchases. However, when a purchase is made using the ""credit"" (offline debit) option, the transaction merely places an authorization hold on the customer's account; funds are not actually withdrawn until the transaction is reconciled and hard-posted to the customer's account, usually a few days later. This is in contrast to a typical credit card transaction, in which, after a few days delay before the transaction is posted to the account, there is a further period of maybe a month before the consumer makes repayment.",0.7142857142857143,local,determine the correct option: what is the evans balance? from the following choices.,1401817891
+1389,"Select the most accurate option: What is the meaning of the term ""horror vacui""? based on the given context.",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate framework.,The spatial-corporeal component of Descartes' metaphysics.,B,"In linguistics, an allomorph is a variant phonetic form of a morpheme, or in other words, a unit of meaning that varies in sound and spelling without changing the meaning. The term allomorph describes the realization of phonological variations for a specific morpheme. The different allomorphs that a morpheme can become are governed by morphophonemic rules. These phonological rules determine what phonetic form, or specific pronunciation, a morpheme will take based on the phonological or morphological context in which it appears.",0.36363636363636365,local,"select the most accurate option: what is the meaning of the term ""horror vacui""? based on the given context.",3551198224
+1390,Which of the following is correct? What is the distinction between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? from the following choices.,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,"To emphasize the validity of the Levites' claim to the offerings and tithes of the Israelites, Moses collected a rod from the leaders of each tribe in Israel and laid the twelve rods overnight in the tent of meeting. The next morning, Aaron's rod was found to have budded and blossomed and produced ripe almonds. The rod was then placed before the Ark of the Covenant to symbolize Aaron's right to priesthood. The following chapter then details the distinction between Aaron's family and the rest of the Levites: while all the Levites (and only Levites) were devoted to the care of the sanctuary, charge of its interior and the altar was committed to the Aaronites alone.
+
+A third view, presented in a number of recent evaluations, is that Jutland, the last major fleet action between battleships, illustrated the irrelevance of battleship fleets following the development of the submarine, mine and torpedo. In this view, the most important consequence of Jutland was the decision of the Germans to engage in unrestricted submarine warfare. Although large numbers of battleships were constructed in the decades between the wars, it has been argued that this outcome reflected the social dominance among naval decision-makers of battleship advocates who constrained technological choices to fit traditional paradigms of fleet action. Battleships played a relatively minor role in World War II, in which the submarine and aircraft carrier emerged as the dominant offensive weapons of naval warfare.
+
+Shoghi Effendi, the head of the religion from 1921 to 1957, wrote the following summary of what he considered to be the distinguishing principles of Baháʼu'lláh's teachings, which, he said, together with the laws and ordinances of the Kitáb-i-Aqdas constitute the bedrock of the Baháʼí Faith:",0.45454545454545453,local,which of the following is correct? what is the distinction between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? from the following choices.,1420345082
+1391,Identify the correct statement: What is a trophic level in an ecological pyramid?,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecomechanism.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecoframework.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",0.8571428571428571,local,identify the correct statement: what is a trophic level in an ecological pyramid?,152563102
+1392,Identify the correct statement: What is the information loss paradox in black holes? based on the given context.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+A contextual reading of the contradiction may also provide an answer to the paradox. The original phrase, ""The Cretans, always liars, evil beasts, idle bellies!"" asserts not an intrinsic paradox, but rather an opinion of the Cretans from Epimenides. A stereotyping of his people not intended to be an absolute statement about the people as a whole. Rather it is a claim made about their position regarding their religious beliefs and socio-cultural attitudes. Within the context of his poem the phrase is specific to a certain belief, a context that Callimachus repeats in his poem regarding Zeus. Further, a more poignant answer to the paradox is simply that to be a liar is to state falsehoods, nothing in the statement asserts everything said is false, but rather they're ""always"" lying. This is not an absolute statement of fact and thus we cannot conclude that there is a true contradiction made by Epimenides with this statement.",0.7272727272727273,local,identify the correct statement: what is the information loss paradox in black holes? based on the given context.,1339693527
+1393,What is the Evans balance?,"The Evans balance is a system used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a system used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a system used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a system used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a system used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"The first definition of cocktail known to be an alcoholic beverage appeared in The Balance and Columbian Repository (Hudson, New York) May 13, 1806; editor Harry Croswell answered the question, ""What is a cocktail?"":
+
+The Hughes Court at Supreme Court Historical Society.
+ ""Charles Evans Hughes, Presidential Contender"" from C-SPAN's The Contenders
+ Judge Manuscript Information: Charles Evans Hughes. List of archives with documents via Judges of the United States Courts. Retrieved April 15, 2005.
+ Archives at the Supreme Court Historical Society
+ Addresses of Charles Evans Hughes, 1906–1916; with an introduction
+ Finding aid to Charles Evans Hughes papers at Columbia University. Rare Book & Manuscript Library.
+ Charles Evans Hughes, Gravesites of the Justices
+
+Evans did not go on the geology field trips, having his own set of trainers—by this time, geology training for the CMP was well-established. He would fly with a NASA geologist/pilot, Dick Laidley, over geologic features, with part of the exercise conducted at , and part at  to . The higher altitude was equivalent to what could be seen from the planned lunar orbit of about 60 nmi with binoculars. Evans would be briefed for several hours before each exercise, and given study guides; afterwards, there would be debriefing and evaluation. Evans was trained in lunar geology by Farouk El-Baz late in the training cycle; this continued until close to launch. The CMP was given information regarding the lunar features he would overfly in the CSM and which he was expected to photograph.",1.0,local,what is the evans balance?,3939004820
+1394,Which of the following is correct? What is the main factor that determines the occurrence of each type of supernova? among the listed options.,The star's distance from Earth,The star's age,The star's temperature,The star's luminosity,The progenitor star's metallicity,E,"Supernova 1987A was the closest supernova to occur since the invention of the telescope. SNR 0509-67.5 is the remnant of an unusually energetic Type Ia supernova from about 400 years ago.
+
+Below is a list of the 15 autocephalous Orthodox churches forming the main body of Orthodox Christianity, all of which are titled equal to each other, but the Ecumenical Patriarchate is titled the first among equals. Based on the definitions, the list is in the order of precedence and alphabetical order where necessary, with some of their constituent autonomous churches and exarchates listed as well. The liturgical title of the primate is in italics.
+
+Chemical properties 
+Each element has a specific set of chemical properties as a consequence of the number of electrons present in the neutral atom, which is Z (the atomic number). The configuration of these electrons follows from the principles of quantum mechanics. The number of electrons in each element's electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. Hence, it is the atomic number alone that determines the chemical properties of an element; and it is for this reason that an element can be defined as consisting of any mixture of atoms with a given atomic number.",0.7142857142857143,local,which of the following is correct? what is the main factor that determines the occurrence of each type of supernova? among the listed options.,3901653291
+1395,What is the purpose of the proximity-focusing design in a RICH detector?,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+Demodulation methods
+The simplest form of an AM demodulator consists of a diode configured as an envelope detector.  As described by Frederick Terman in 1943, the diode rectifier was the most widely used detector for AM signals, providing a simple means of recovering the modulation envelope. In 1904, John Ambrose Fleming developed such a circuit for a radio-wave detector in the crystal radio. Adding variable capacitors to the crystal detector enables tuning to a specific frequency.
+
+Lens design: Lens - In optical engineering, Euclidean geometry is critical in the design of lenses, where precise geometric shapes determine the focusing properties. Geometric optics analyzes the focusing of light by lenses and mirrors.
+alt=Types of lenses|center|thumb|450x450px|Types of Lenses",0.6666666666666666,local,what is the purpose of the proximity-focusing design in a rich detector?,1241456763
+1396,"Choose the correct answer: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? from the following choices.","MOND is a principle that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that raises the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a principle that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a framework that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a framework that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"choose the correct answer: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? from the following choices.",2220039747
+1397,Determine the correct option: What is the definition of Atomristor? from the following choices.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.5714285714285714,local,determine the correct option: what is the definition of atomristor? from the following choices.,2056595578
+1398,What is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field?,Blueshifting,Redshifting,Reddening,Whitening,Yellowing,C,"Infrared radiation in the spectral distribution of a black body is usually considered a form of heat, since it has an equivalent temperature and is associated with an entropy change per unit of thermal energy. However, ""heat"" is a technical term in physics and thermodynamics and is often confused with thermal energy. Any type of electromagnetic energy can be transformed into thermal energy in interaction with matter. Thus, any electromagnetic radiation can ""heat"" (in the sense of increase the thermal energy temperature of) a material, when it is absorbed. The inverse or time-reversed process of absorption is thermal radiation. Much of the thermal energy in matter consists of random motion of charged particles, and this energy can be radiated away from the matter. The resulting radiation may subsequently be absorbed by another piece of matter, with the deposited energy heating the material.
+
+As the universe expands, both matter and radiation become diluted. However, the energy densities of radiation and matter dilute at different rates. As a particular volume expands, mass-energy density is changed only by the increase in volume, but the energy density of radiation is changed both by the increase in volume and by the increase in the wavelength of the photons that make it up. Thus the energy of radiation becomes a smaller part of the universe's total energy than that of matter as it expands. The very early universe is said to have been 'radiation dominated' and radiation controlled the deceleration of expansion. Later, as the average energy per photon becomes roughly 10 eV and lower, matter dictates the rate of deceleration and the universe is said to be 'matter dominated'. The intermediate case is not treated well analytically. As the expansion of the universe continues, matter dilutes even further and the cosmological constant becomes dominant, leading to an acceleration in the universe's expansion.
+
+Together, wave and particle effects fully explain the emission and absorption spectra of EM radiation. The matter-composition of the medium through which the light travels determines the nature of the absorption and emission spectrum. These bands correspond to the allowed energy levels in the atoms. Dark bands in the absorption spectrum are due to the atoms in an intervening medium between source and observer. The atoms absorb certain frequencies of the light between emitter and detector/eye, then emit them in all directions. A dark band appears to the detector, due to the radiation scattered out of the light beam. For instance, dark bands in the light emitted by a distant star are due to the atoms in the star's atmosphere.",0.5,local,what is the term used in astrophysics to describe light-matter interactions resulting in energy shifts in the radiation field?,838180545
+1399,What is resistivity?,Resistivity is an extrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the resistance of a material to electrical current flow. It is measured in ohm-meters and is dependent on the material's shape and size.,Resistivity is an intrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohm-meters and is independent of the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohm-meters and is independent of the material's shape and size.,C,"In accordance with magnetic data, electrical resistivity of curium increases with temperature – about twice between 4 and 60 K – and then is nearly constant up to room temperature. There is a significant increase in resistivity over time (~) due to self-damage of the crystal lattice by alpha decay. This makes uncertain the true resistivity of curium (~). Curium's resistivity is similar to that of gadolinium, and the actinides plutonium and neptunium, but significantly higher than that of americium, uranium, polonium and thorium.
+
+Conducător, title used officially by Romanian dictator Ion Antonescu during World War II
+ Electrical resistivity and conductivity
+ Electrical resistance and conductance
+ Thermal conductivity and resistivity
+
+Similar to diamond, the combination in c-BN of highest thermal conductivity and electrical resistivity is ideal for heat spreaders.",1.0,local,what is resistivity?,2657199189
+1400,What is the definition of anatomy?,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"The discipline of anatomy is divided into macroscopic and microscopic parts. Macroscopic anatomy, or gross anatomy, is the examination of an animal's body parts using unaided eyesight. Gross anatomy also includes the branch of superficial anatomy. Microscopic anatomy involves the use of optical instruments in the study of the tissues of various structures, known as histology, and also in the study of cells.
+
+The discipline of anatomy can be subdivided into a number of branches, including gross or macroscopic anatomy and microscopic anatomy. Gross anatomy is the study of structures large enough to be seen with the naked eye, and also includes superficial anatomy or surface anatomy, the study by sight of the external body features. Microscopic anatomy is the study of structures on a microscopic scale, along with histology (the study of tissues), and embryology (the study of an organism in its immature condition). Regional anatomy is the study of the interrelationships of all of the structures in a specific body region, such as the abdomen. In contrast, systemic anatomy is the study of the structures that make up a discrete body system—that is, a group of structures that work together to perform a unique body function, such as the digestive system.
+
+Other branches of anatomy 
+ Surface anatomy is important as the study of anatomical landmarks that can be readily seen from the exterior contours of the body. It enables medics and veterinarians to gauge the position and anatomy of the associated deeper structures. Superficial is a directional term that indicates that structures are located relatively close to the surface of the body.
+ Comparative anatomy relates to the comparison of anatomical structures (both gross and microscopic) in different animals.
+ Artistic anatomy relates to anatomic studies of body proportions for artistic reasons.",0.5,local,what is the definition of anatomy?,798148653
+1401,Determine the correct option: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? from the following choices.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.5714285714285714,local,determine the correct option: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? from the following choices.,3159493546
+1402,What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI?,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,"Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate  pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to form images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy.
+MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long, confining tube, although ""open"" MRI designs mostly",0.15789473684210525,live_api,what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri?,530394648
+1403,Which of the following is correct? What is water hammer? carefully.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing structures.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to enhance the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"Hammer  
+The last rock in an end is called the hammer, and throwing the hammer gives a team a tactical advantage. Before the game, teams typically decide who gets the hammer in the first end either by chance (such as a coin toss), by a ""draw-to-the-button"" contest, where a representative of each team shoots to see who gets closer to the centre of the rings, or, particularly in tournament settings like the Winter Olympics, by a comparison of each team's win–loss record. In all subsequent ends, the team that did not score in the preceding end gets to throw second, thus having the hammer. In the event that neither team scores, called a blanked end, the hammer remains with the same team. Naturally, it is easier to score points with the hammer than without; the team with the hammer generally tries to score two or more points. If only one point is possible, the skip may try to avoid scoring at all in order to retain the hammer the next end, giving the team another chance to use the hammer advantage to try to score two points. Scoring without the hammer is commonly referred to as stealing, or a steal, and is much more difficult.
+
+As early as 1805, Gay-Lussac and von Humboldt showed that water is formed of two volumes of hydrogen and one volume of oxygen, and by 1811 Amedeo Avogadro had arrived at the correct interpretation of water's composition, based on what is now called Avogadro's law and the assumption of diatomic elemental molecules. However, these results were mostly ignored until 1860, partly due to the belief that atoms of one element would have no chemical affinity toward atoms of the same element, and also partly due to apparent exceptions to Avogadro's law that were not explained until later in terms of dissociating molecules.
+
+TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.",0.8333333333333334,local,which of the following is correct? what is water hammer? carefully.,3151057946
+1404,Which of the following is correct? What is magnetic susceptibility? based on the given context.,"Magnetic susceptibility is a measure of how much a material will absorb magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will resist magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will conduct magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will reflect magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.",B,"Diamagnetic materials, like water, or water-based materials, have a relative magnetic permeability that is less than or equal to 1, and therefore a magnetic susceptibility less than or equal to 0, since susceptibility is defined as . This means that diamagnetic materials are repelled by magnetic fields. However, since diamagnetism is such a weak property, its effects are not observable in everyday life. For example, the magnetic susceptibility of diamagnets such as water is . The most strongly diamagnetic material is bismuth, , although pyrolytic carbon may have a susceptibility of  in one plane. Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets. Because χv is derived from the ratio of the internal magnetic field to the applied field, it is a dimensionless value.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+The ampere-turn system is constructed in a similar way by considering magnetomotive force and magnetic field strength to be electrical quantities and rationalising the system by dividing the units of magnetic pole strength and magnetisation by 4. The units of the first two quantities are the ampere and the ampere per centimetre respectively. The unit of magnetic permeability is that of the emu system, and the magnetic constitutive equations are  and . Magnetic reluctance is given a hybrid unit to ensure the validity of Ohm's law for magnetic circuits.",0.75,local,which of the following is correct? what is magnetic susceptibility? based on the given context.,450331920
+1405,Select the most accurate option: What is the Ramsauer-Townsend effect? among the listed options.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a non-noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a noble gas. It requires the wave principle of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a non-noble gas. It requires the wave principle of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of electrons by atoms of any gas. It can be explained by classical mechanics.,B,No match found.,0.0,live_api,select the most accurate option: what is the ramsauer-townsend effect? among the listed options.,290518588
+1406,Pick the best possible answer: What is the Liouville density? among the listed options.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,No match found.,0.0,live_api,pick the best possible answer: what is the liouville density? among the listed options.,1707895661
+1407,Select the most accurate option: What is the synapstor or synapse transistor?,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term depression for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and inactivity-based forgetting.,E,"Transistor amplifiers (or solid state amplifiers) are the most common type of amplifier in use today. A transistor is used as the active element. The gain of the amplifier is determined by the properties of the transistor itself as well as the circuit it is contained within.
+
+When compensated for temperature, the forward voltage drop of a transistor's base-emitter junction can provide a usably accurate logarithmic or exponential function. Op amps scale the output voltage so that it is usable with the rest of the computer.
+
+On April 28, 1955, Chrysler and Philco announced the development and production of the World's First All-Transistor car radio. The all-transistor car radio, Mopar model 914HR, developed and produced by Chrysler and Philco, was a $150 option on the 1956 Imperial automobile models. Philco began manufacturing this radio in the fall of 1955 at its Sandusky Ohio plant.",0.625,local,select the most accurate option: what is the synapstor or synapse transistor?,2767535564
+1408,Select the most accurate option: What is a regular polytope? carefully.,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.",0.2857142857142857,local,select the most accurate option: what is a regular polytope? carefully.,4092801793
+1409,Which of the following is correct? What is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+The constellation contains a number of molecular clouds (the Chamaeleon dark clouds) that are forming low-mass T Tauri stars. The cloud complex lies some 400 to 600 light years from Earth, and contains tens of thousands of solar masses of gas and dust. The most prominent cluster of T Tauri stars and young B-type stars are in the Chamaeleon I cloud, and are associated with the reflection nebula IC 2631.",0.45454545454545453,local,which of the following is correct? what is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,452296872
+1410,What is the most popular explanation for the shower-curtain effect?,The pressure differential between the inside and outside of the shower,The decrease in velocity resulting in an increase in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"The Coriolis Effect — a conflict between common sense and mathematics PDF-file. 20 pages. A general discussion by Anders Persson of various aspects of the coriolis effect, including Foucault's Pendulum and Taylor columns.
+ The coriolis effect in meteorology PDF-file. 5 pages. A detailed explanation by Mats Rosengren of how the gravitational force and the rotation of the Earth affect the atmospheric motion over the Earth surface. 2 figures
+ 10 Coriolis Effect Videos and Games- from the About.com Weather Page
+ Coriolis Force – from ScienceWorld
+ Coriolis Effect and Drains An article from the NEWTON web site hosted by the Argonne National Laboratory.
+ Catalog of Coriolis videos
+ Coriolis Effect: A graphical animation, a visual Earth animation with precise explanation
+ An introduction to fluid dynamics SPINLab Educational Film explains the Coriolis effect with the aid of lab experiments
+ Do bathtubs drain counterclockwise in the Northern Hemisphere?  by Cecil Adams.
+ Bad Coriolis. An article uncovering misinformation about the Coriolis effect. By Alistair B. Fraser, emeritus professor of meteorology at Pennsylvania State University
+ The Coriolis Effect: A (Fairly) Simple Explanation, an explanation for the layperson
+ Observe an animation of the Coriolis effect over Earth's surface
+ Animation clip showing scenes as viewed from both an inertial frame and a rotating frame of reference, visualizing the Coriolis and centrifugal forces.
+ Vincent Mallette The Coriolis Force @ INWIT
+ NASA notes
+ Interactive Coriolis Fountain lets you control rotation speed, droplet speed and frame of reference to explore the Coriolis effect.
+ Rotating Co-ordinating Systems , transformation from inertial systems
+
+To the east of the Hottentots Holland mountains is the valley of the Steenbras River, in which the Steenbras Dam was built as a water supply for Cape Town. The dam has been supplemented by several other dams around the western Cape, some of them considerably larger. This is almost entirely a conservation area, of high biodiversity. Bellville, Brackenfell, Durbanville, Kraaifontein, Goodwood and Parow are a few of the towns that make up the Northern Suburbs of Cape Town. In current popular culture these areas are often referred to as being beyond the ""boerewors curtain,"" a play on the term ""iron curtain.""
+
+Meteor showers 
+Boötes is home to the Quadrantid meteor shower, the most prolific annual meteor shower. It was discovered in January 1835 and named in 1864 by Alexander Herschel. The radiant is located in northern Boötes near Kappa Boötis, in its namesake former constellation of Quadrans Muralis. Quadrantid meteors are dim, but have a peak visible hourly rate of approximately 100 per hour on January 3–4. The zenithal hourly rate of the Quadrantids is approximately 130 meteors per hour at their peak; it is also a very narrow shower.",1.0,local,what is the most popular explanation for the shower-curtain effect?,2709346155
+1411,Pick the best possible answer: What is Hesse's principle of transfer in geometry?,Hesse's principle of transfer is a concept in biology that explains the transfer of genetic information from one generation to another.,Hesse's principle of transfer is a concept in chemistry that explains the transfer of electrons between atoms in a chemical reaction.,Hesse's principle of transfer is a concept in physics that explains the transfer of energy from one object to another.,Hesse's principle of transfer is a concept in economics that explains the transfer of wealth from one individual to another.,"Hesse's principle of transfer is a concept in geometry that states that if the points of the projective line P1 are depicted by a rational normal curve in Pn, then the group of the projective transformations of Pn that preserve the curve is isomorphic to the group of the projective transformations of P1.",E,No match found.,0.0,live_api,pick the best possible answer: what is hesse's principle of transfer in geometry?,2216119478
+1412,Select the most accurate option: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? based on the given context.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,No match found.,0.0,live_api,select the most accurate option: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? based on the given context.,1780665560
+1413,"Select the most accurate option: How do the Lunar Laser Ranging Experiment, radar astronomy, and the Deep Space Network determine distances to the Moon, planets, and spacecraft? carefully.",They determine the values of electromagnetic constants.,They measure round-trip transit times.,They measure the actual speed of light waves.,They use interferometry to determine the speed of light.,They separately determine the frequency and wavelength of a light beam.,B,"Lidar (, an acronym of light detection and ranging or laser imaging, detection, and ranging, often stylized LiDAR) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed direction (e.g., vertical) or it may scan directions, in a special combination of 3D scanning and laser scanning.
+
+Lidar has terrestrial, airborne, and mobile uses. It is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swathe mapping (ALSM), and laser altimetry. It is used to make digital 3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has also been increasingly used in control and navigation for autonomous cars and for the",0.1,live_api,"select the most accurate option: how do the lunar laser ranging experiment, radar astronomy, and the deep space network determine distances to the moon, planets, and spacecraft? carefully.",3254867156
+1414,Determine the correct option: What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? carefully.,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a framework of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the framework. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a mechanism of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.",0.6153846153846154,local,determine the correct option: what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? carefully.,3616646701
+1415,"Pick the best possible answer: What is the concept of simultaneity in Einstein's book, Relativity? carefully.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.",0.36363636363636365,local,"pick the best possible answer: what is the concept of simultaneity in einstein's book, relativity? carefully.",2332671880
+1416,What happens to an initially inhomogeneous physical system that is isolated by a thermodynamic operation?,It will change its internal state only if it is composed of a single subsystem and has internal walls.,It will change its internal state only if it is composed of several subsystems separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single subsystem.,D,"In what has been called the fundamental postulate in statistical mechanics, among system microstates of the same energy (i.e., degenerate microstates) each microstate is assumed to be populated with equal probability , where  is the number of microstates whose energy equals that of the system. Usually, this assumption is justified for an isolated system in a thermodynamic equilibrium. Then in case of an isolated system the previous formula reduces to:In thermodynamics, such a system is one with a fixed volume, number of molecules, and internal energy, called a microcanonical ensemble.",0.4444444444444444,local,what happens to an initially inhomogeneous physical system that is isolated by a thermodynamic operation?,2608678044
+1417,Identify the correct statement: What is the Optical Signal-to-Noise Ratio (OSNR)? among the listed options.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in frameworks where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.36363636363636365,local,identify the correct statement: what is the optical signal-to-noise ratio (osnr)? among the listed options.,3543307753
+1418,Choose the correct answer: What is the relationship between the Wigner function and the density matrix operator?,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+The relationship between the angular momentum operator and the rotation operators is the same as the relationship between Lie algebras and Lie groups in mathematics. The close relationship between angular momentum and rotations is reflected in Noether's theorem that proves that angular momentum is conserved whenever the laws of physics are rotationally invariant.
+
+Wigner received a request from Arnold Sommerfeld to work at the University of Göttingen as an assistant to the great mathematician David Hilbert. This proved a disappointment, as the aged Hilbert's abilities were failing, and his interests had shifted to logic. Wigner nonetheless studied independently. He laid the foundation for the theory of symmetries in quantum mechanics and in 1927 introduced what is now known as the Wigner D-matrix. Wigner and Hermann Weyl were responsible for introducing group theory into quantum mechanics. The latter had written a standard text, Group Theory and Quantum Mechanics (1928), but it was not easy to understand, especially for younger physicists. Wigner's Group Theory and Its Application to the Quantum Mechanics of Atomic Spectra (1931) made group theory accessible to a wider audience.",0.6,local,choose the correct answer: what is the relationship between the wigner function and the density matrix operator?,936783891
+1419,Identify the correct statement: What is the contrast between illuminance and luminance? from the following choices.,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,"Light pollution is the alteration of the natural patterns of light and dark in ecosystems, resulting from artificial lighting. In a descriptive sense, light pollution occurs when artificial light is used in a poor or excessive way, especially at night, causing negative effects in the environment and the view of the night sky. Light pollution doesn't just negatively affect human health, but also the plants and animals that live within the wide surrounding regions affected by artificial lighting. Light pollution can be understood not only as a phenomenon resulting from a specific source or kind of pollution, but also as a contributor to the wider, collective impact of various sources of pollution.
+Although this type of pollution can exist throughout the day, its effects are magnified during the night with the contrast of the sky's darkness. It has been estimated that 83% of the world's people live under light-polluted skies and that 23% of the world's land area is affected by skyglow.
+Th",0.1111111111111111,live_api,identify the correct statement: what is the contrast between illuminance and luminance? from the following choices.,2028168325
+1420,Pick the best possible answer: What is the Einstein@Home project? based on the given context.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.3,local,pick the best possible answer: what is the einstein@home project? based on the given context.,1530752898
+1421,Pick the best possible answer: What is the formalism that angular momentum is associated with in rotational invariance? among the listed options.,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.",0.5,local,pick the best possible answer: what is the formalism that angular momentum is associated with in rotational invariance? among the listed options.,1772507076
+1422,Select the most accurate option: What is the Roche limit? from the following choices.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"The Arsenal Football Club is an English professional football club based in Islington, North London, England. They compete in the Premier League, the top tier of English football. Domestically, Arsenal have won 14 league titles (including one unbeaten), a record 14 FA Cups, 2 League Cups, 17 FA Community Shields and a Football League Centenary Trophy. In European football, they have won one European Cup Winners' Cup and one Inter-Cities Fairs Cup. In terms of trophies won, it is the third-most successful club in English football, and one of the most successful clubs in world football.
+Arsenal was the first club from southern England to join the Football League in 1893, officially joining the First Division in 1904. Arsenal carries the longest active streak continuously in the top division (over 105 years and counting) and completed the 20th century with the highest average league position of any club. Arsenal has won the second-most top-flight matches in English football history. In th",0.125,live_api,select the most accurate option: what is the roche limit? from the following choices.,424440139
+1423,Choose the correct answer: What is the reason for the stochastic nature of all observed resistance-switching processes? carefully.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. These laws, which provide the basis for Newtonian mechanics, can be paraphrased as follows:
+
+A body remains at rest, or in motion at a constant speed in a straight line, unless it is acted upon by a force.
+At any instant of time, the net force on a body is equal to the body's acceleration multiplied by its mass or, equivalently, the rate at which the body's momentum is changing with time.
+If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.
+The three laws of motion were first stated by Isaac Newton in his Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), originally published in 1687. Newton used them to investigate and explain the motion of many physical objects and systems. In the time since Newton, new insights, especially around the concept of energy, b",0.0,live_api,choose the correct answer: what is the reason for the stochastic nature of all observed resistance-switching processes? carefully.,1732753119
+1424,Determine the correct option: What is a Schwarzschild black hole? from the following choices.,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.
+
+For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole.",0.375,local,determine the correct option: what is a schwarzschild black hole? from the following choices.,136260301
+1425,Choose the correct answer: What is the contrast between redshift due to the expansion of the universe and Doppler redshift? from the following choices.,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the boost of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no contrast between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the boost of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.5,local,choose the correct answer: what is the contrast between redshift due to the expansion of the universe and doppler redshift? from the following choices.,3633435290
+1426,Identify the correct statement: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,"The scale is reverse logarithmic: the brighter an object is, the lower its magnitude number. A difference of 1.0 in magnitude corresponds to the brightness ratio of , or about 2.512. For example, a magnitude 2.0 star is 2.512 times as bright as a magnitude 3.0 star, 6.31 times as magnitude 4.0, and 100 times as magnitude 7.0.",0.2777777777777778,local,identify the correct statement: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,868561389
+1427,Determine the correct option: What is the reason for the stochastic nature of all observed resistance-switching processes? among the listed options.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"The tragedy of the commons is the concept that, in a system where individuals benefit from the use of a shared resource while the cost of that use is shared by all users, it is rational for individuals to overuse the resource, even though collectively this will likely lead to the depletion of the resource. The concept has been widely discussed and criticized in economics, ecology, and other sciences.
+The metaphorical term is the title of a 1968 essay by ecologist Garrett Hardin. Versions of this concept extend back to classical antiquity, being discussed by Aristotle. The principal concern of Hardin's essay was overpopulation of the planet. To prevent the inevitable tragedy (he argued) it was necessary to reject the principle (supposedly enshrined in the Universal Declaration of Human Rights) according to which every family has a right to choose the number of its offspring, and to replace it by ""mutual coercion, mutually agreed upon"".
+Some scholars have argued that over-exploitation of",0.07142857142857142,live_api,determine the correct option: what is the reason for the stochastic nature of all observed resistance-switching processes? among the listed options.,1134863965
+1428,Identify the correct statement: What is the reason for heating metals to a temperature just above the upper critical temperature? based on the given context.,"To prevent the grains of solution from growing too large, which minimizes mechanical properties such as toughness, shear strength, and tensile strength.","To boost the size of the grains of solution, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too large, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too small, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To boost the size of the grains of solution, which reduces mechanical properties such as toughness, shear strength, and tensile strength.",C,"At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of the material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with ""ceramic"" in the context of ceramic capacitors for just this reason.
+
+Color temperature in astronomy
+In astronomy, the color temperature is defined by the local slope of the SPD at a given wavelength, or, in practice, a wavelength range. Given, for example, the color magnitudes B and V which are calibrated to be equal for an A0V star (e.g. Vega), the stellar color temperature  is given by the temperature for which the color index  of a black-body radiator fits the stellar one. Besides the , other color indices can be used as well. The color temperature (as well as the correlated color temperature defined above) may differ largely from the effective temperature given by the radiative flux of the stellar surface. For example, the color temperature of an A0V star is about 15000 K compared to an effective temperature of about 9500 K.
+
+For the foundations of thermodynamics, the conceptual importance of this was emphasized by Bryan, by Carathéodory, and by Born. The reason is that calorimetry presupposes a type of temperature as already defined before the statement of the first law of thermodynamics, such as one based on empirical scales. Such a presupposition involves making the distinction between empirical temperature and absolute temperature. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis.",0.6428571428571429,local,identify the correct statement: what is the reason for heating metals to a temperature just above the upper critical temperature? based on the given context.,309100561
+1429,Select the most accurate option: Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern?,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+The simplest descriptions of diffraction are those in which the situation can be reduced to a two-dimensional problem. For water waves, this is already the case; water waves propagate only on the surface of the water. For light, we can often neglect one direction if the diffracting object extends in that direction over a distance far greater than the wavelength. In the case of light shining through small circular holes, we have to take into account the full three-dimensional nature of the problem.",0.5263157894736842,local,select the most accurate option: which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern?,1244678858
+1430,Identify the correct statement: What is the relationship between Coordinated Universal Time (UTC) and Universal Time (UT1)? based on the given context.,UTC and Universal Time (UT1) are identical time scales that are used interchangeably in science and engineering.,"UTC is a time scale that is completely independent of Universal Time (UT1). UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by a non-integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by an integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".",UTC is a time scale that is based on the irregularities in Earth's rotation and is completely independent of Universal Time (UT1).,D,"The BIPM has an important role in maintaining accurate worldwide time of day. It combines, analyses, and averages the official atomic time standards of member nations around the world to create a single, official Coordinated Universal Time (UTC).
+
+Relation to UTC 
+Contrary to TAI, UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time by a constant offset. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2.  Afterwards, these adjustments were made only in whole seconds to approximate UT1. This was a compromise arrangement in order to enable a publicly broadcast time scale. The less frequent whole-second adjustments meant that the time scale would be more stable and easier to synchronize internationally. The fact that it continues to approximate UT1 means that tasks, such as navigation, which require a source of Universal Time continue to be well served by the public broadcast of UTC.
+
+International Atomic Time (TAI, from its French name )Temps atomique 1975 is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid. TAI is a weighted average of the time kept by over 450 atomic clocks in over 80 national laboratories worldwide. It is a continuous scale of time, without leap seconds, and it is the principal realisation of Terrestrial Time (with a fixed offset of epoch). It is the basis for Coordinated Universal Time (UTC), which is used for civil timekeeping all over the Earth's surface and which has leap seconds.",0.5384615384615384,local,identify the correct statement: what is the relationship between coordinated universal time (utc) and universal time (ut1)? based on the given context.,3852704279
+1431,Determine the correct option: What is the origin of the permanent moment in paramagnetism? among the listed options.,The permanent moment is generally due to the spin of unpaired electrons in atomic or molecular electron orbitals.,The permanent moment is due to the alignment of dipoles perpendicular to the applied field.,"The permanent moment is due to the torque provided on the magnetic moments by an applied field, which tries to align the dipoles perpendicular to the applied field.",The permanent moment is due to the quantum-mechanical properties of spin and angular momentum.,The permanent moment is due to the interaction of dipoles with one another and are randomly oriented in the absence of an external field due to thermal agitation.,A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+Common derivative contract
+Some of the common variants of derivative contracts are as follows:
+ Forwards: tailored contract between two parties, where payment takes place at a specific time in the future at today's pre-determined price.
+ Futures: contracts to buy or sell an asset on a future date at a price specified today. A futures contract differs from a forward contract in that the futures contract is a standardized contract written by a clearing house that operates an exchange where the contract can be bought and sold; the forward contract is a non-standardized contract written by the parties themselves.
+ Options: contracts that give the owner the right, but not the obligation, to buy (in the case of a call option) or sell (in the case of a put option) an asset. The price at which the sale takes place is known as the strike price, and is specified at the time the parties enter into the option. The option contract also specifies a maturity date. In the case of a European option, the owner has the right to require the sale to take place on (but not before) the maturity date; in the case of an American option, the owner can require the sale to take place at any time up to the maturity date. If the owner of the contract exercises this right, the counter-party has the obligation to carry out the transaction. Options are of two types: call option and put option.
+ Binary options: contracts that provide the owner with an all-or-nothing profit profile.
+ Warrants: apart from the commonly used short-dated options which have a maximum maturity period of one year, there exist certain long-dated options as well, known as warrants. These are generally traded over the counter.
+ Swaps: contracts to exchange cash (flows) on or before a specified future date based on the underlying value of currencies exchange rates, bonds/interest rates, commodities exchange, stocks or other assets.
+Swaps can basically be categorized into Interest rate swap and currency swap.
+Some common examples of these derivatives are the following:",0.3,local,determine the correct option: what is the origin of the permanent moment in paramagnetism? among the listed options.,889668804
+1432,Which of the following is correct? What is the Maxwell's Demon thought experiment?,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an raise in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a reduce in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an enhance in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an enhance in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a minimize in temperature in one part and an enhance in temperature in the other, in accordance with the second law of thermodynamics.",C,"""Which-way"" experiments and the principle of complementarity 
+A well-known thought experiment predicts that if particle detectors are positioned at the slits, showing through which slit a photon goes, the interference pattern will disappear. This which-way experiment illustrates the complementarity principle that photons can behave as either particles or waves, but cannot be observed as both at the same time.
+Despite the importance of this thought experiment in the history of quantum mechanics (for example, see the discussion on Einstein's version of this experiment), technically feasible realizations of this experiment were not proposed until the 1970s. (Naive implementations of the textbook thought experiment are not possible because photons cannot be detected without absorbing the photon.) Currently, multiple experiments have been performed illustrating various aspects of complementarity.
+
+Interpretations of the experiment 
+Like the Schrödinger's cat thought experiment, the double-slit experiment is often used to highlight the differences and similarities between the various interpretations of quantum mechanics.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.",0.625,local,which of the following is correct? what is the maxwell's demon thought experiment?,4207705306
+1433,Identify the correct statement: What is the Droste effect? based on the given context.,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+All the early models, developed in the middle of the 20th century, are linear transmission models. Lasswell's model, for example, is based on five fundamental questions: ""Who?"", ""Says what?"", ""In which channel?"", ""To whom?"", and ""With what effect?"". The goal of these questions is to identify the basic components involved in the communicative process: the sender, the message, the channel, the receiver, and the effect. Lasswell's model was initially only conceived as a model of mass communication, but it has been applied to other fields as well. Some communication theorists, like Richard Braddock, have expanded it by including additional questions, like ""Under what circumstances?"" and ""For what purpose?"".",0.875,local,identify the correct statement: what is the droste effect? based on the given context.,3999316595
+1434,Which of the following is an accurate definition of dynamic scaling in self-similar systems?,"Dynamic scaling refers to the evolution of self-similar systems, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar systems, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar systems, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar systems, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar systems, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"There is a direct correspondence between the base units of mechanics in CGS and SI.  Since the formulae expressing the laws of mechanics are the same in both systems and since both systems are coherent, the definitions of all coherent derived units in terms of the base units are the same in both systems, and there is an unambiguous relationship between derived units:
+   (definition of velocity)
+   (Newton's second law of motion)
+   (energy defined in terms of work)
+   (pressure defined as force per unit area)
+   (dynamic viscosity defined as shear stress per unit velocity gradient).
+
+Construction of dynamical systems 
+The concept of evolution in time is central to the theory of dynamical systems as seen in the previous sections: the basic reason for this fact is that the starting motivation of the theory was the study of time behavior of classical mechanical systems. But a system of ordinary differential equations must be solved before it becomes a dynamic system. For example, consider an initial value problem such as the following:
+
+In the mathematical language of dynamic systems analysis, one of the simplest bistable systems is",0.4444444444444444,local,which of the following is an accurate definition of dynamic scaling in self-similar systems?,3878098014
+1435,Pick the best possible answer: What is the Droste effect? from the following choices.,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"Trumpism is the political ideology behind Donald Trump, the 45th and 47th president of the United States, and his political base. It is often used in close conjunction with the Make America Great Again (MAGA) political movement. It comprises ideologies such as right-wing populism, right-wing antiglobalism, national conservatism, Christian nationalism, and neo-nationalism, and features significant illiberal, authoritarian, and autocratic beliefs and practices. Other ideologies include nativism, economic nationalism, anti-environmentalism, and anti-intellectualism. Trumpists and Trumpians are terms that refer to individuals exhibiting its characteristics. There is significant academic debate over the prevalence of neo-fascist and alt-right elements of Trumpism.
+Trumpism has been characterized by scholars as having authoritarian leanings, and has been associated with the belief that the president is above the rule of law. It has been referred to as an American political variant of the pop",0.0,live_api,pick the best possible answer: what is the droste effect? from the following choices.,2759713020
+1436,Identify the correct statement: What is the significance of probability amplitudes in quantum mechanics? carefully.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).
+
+In quantum mechanics, diffraction is also described in terms of a wave, but the wavefunction represents a probability amplitude whose modulus squared is the probability of detection. The light and dark regions in diffraction patterns are then areas where the quanta are more or less likely to be detected.",0.4444444444444444,local,identify the correct statement: what is the significance of probability amplitudes in quantum mechanics? carefully.,3896040696
+1437,Identify the correct statement: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy?,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,"The scale is reverse logarithmic: the brighter an object is, the lower its magnitude number. A difference of 1.0 in magnitude corresponds to the brightness ratio of , or about 2.512. For example, a magnitude 2.0 star is 2.512 times as bright as a magnitude 3.0 star, 6.31 times as magnitude 4.0, and 100 times as magnitude 7.0.
+
+In 1856, Norman Robert Pogson formalized the system by defining a first magnitude star as a star that is 100 times as bright as a sixth-magnitude star, thereby establishing the logarithmic scale still in use today. This implies that a star of magnitude  is about 2.512 times as bright as a star of magnitude . This figure, the fifth root of 100, became known as . The 1884 Harvard Photometry and 1886 Potsdamer Durchmusterung star catalogs popularized Pogson's ratio, and eventually it became a de facto standard in modern astronomy to describe differences in brightness.",0.4,local,identify the correct statement: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy?,441381083
+1438,Determine the correct option: What is the gravitomagnetic interaction? among the listed options.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general concept of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option",0.375,local,determine the correct option: what is the gravitomagnetic interaction? among the listed options.,3532849423
+1439,Determine the correct option: What is the significance of probability amplitudes in quantum mechanics? based on the given context.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Consider a quantum circuit , which consists of  gates, , where each  comes from a universal gate set and acts on at most two qubits.
+To understand what the sum of histories is, we visualize the evolution of a quantum state given a quantum circuit as a tree. The root is the input , and each node in the tree has  children, each representing a state in . The weight on a tree edge from a node in -th level representing a state  to a node in -th level  representing a state  is , the amplitude of  after applying  on . The transition amplitude of a root-to-leaf path is the product of all the weights on the edges along the path. To get the probability of the final state being , we sum up the amplitudes of all root-to-leave paths that ends at a node representing .
+
+Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).",0.45454545454545453,local,determine the correct option: what is the significance of probability amplitudes in quantum mechanics? based on the given context.,4062591934
+1440,Select the most accurate option: What happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation? from the following choices.,It will change its internal state only if it is composed of a single submechanism and has internal walls.,It will change its internal state only if it is composed of several subframeworks separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single substructure.,D,No match found.,0.0,live_api,select the most accurate option: what happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation? from the following choices.,3378095737
+1441,Identify the correct statement: Who was Giordano Bruno? among the listed options.,A German philosopher who supported the Keplerian principle that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic concept that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian framework that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican framework that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean concept that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"The history of magic extends from the earliest literate cultures, who relied on charms, divination and spells to interpret and influence the forces of nature. Even societies without written language left crafted artifacts, cave art and monuments that have been interpreted as having magical purpose. Magic and what would later be called science were often practiced together, with the notable examples of astrology and alchemy, before the Scientific Revolution of the late European Renaissance moved to separate science from magic on the basis of repeatable observation. Despite this loss of prestige, the use of magic has continued both in its traditional role, and among modern occultists who seek to adapt it for a scientific world.",0.1111111111111111,live_api,identify the correct statement: who was giordano bruno? among the listed options.,1488951097
+1442,Determine the correct option: What is the main advantage of ferroelectric memristors?,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"In turn, pyroelectricity is seen most strongly in materials that also display the ferroelectric effect, in which a stable electric dipole can be oriented or reversed by applying an electrostatic field. Pyroelectricity is also a necessary consequence of ferroelectricity. This can be used to store information in ferroelectric capacitors, elements of ferroelectric RAM.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+The main advantage of the warping phenomenon is the absence of aliasing distortion of the frequency response characteristic, such as observed with Impulse invariance.",0.7142857142857143,local,determine the correct option: what is the main advantage of ferroelectric memristors?,2091257759
+1443,Pick the best possible answer: What are coherent turbulent structures? based on the given context.,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the procedures of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the approachs of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the techniques of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.",C,"Futures studies, futures research or futurology is the systematic, interdisciplinary and holistic study of social and technological advancement, and other environmental trends, often for the purpose of exploring how people may live and work in the future. Futures studies scholars make predictions of the future and aim at systematically exploring alternatives to the predictions. Futures studies are a branch of the social sciences and an extension to the field of history. Futures studies (colloquially called ""futures"" by many of the field's researchers) seeks to understand what is likely to continue and what could plausibly change.
+Unlike the physical sciences where a narrower, more specified system is studied, futurology concerns a much bigger and more complex world system. The methodology and knowledge are much less proven than in natural science and social sciences like sociology and economics. There is a debate as to whether this discipline is an art or science, and it is sometimes d",0.0,live_api,pick the best possible answer: what are coherent turbulent structures? based on the given context.,431825386
+1444,Pick the best possible answer: Which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? carefully.,Planetary mechanisms cannot be categorized based on their orbital dynamics.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the framework.",Planetary structures can only be categorized as resonant or non-resonant-interacting.,"Planetary structures can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary mechanisms can only be categorized as hierarchical or non-hierarchical.,D,No match found.,0.0,live_api,pick the best possible answer: which of the following statements is true about the categorization of planetary frameworks according to their orbital dynamics? carefully.,800483418
+1445,Pick the best possible answer: What was the aim of the Gravity Probe B (GP-B) mission?,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"On the American late-night live television sketch comedy and variety show Saturday Night Live (SNL), a commercial advertisement parody is commonly shown after the host's opening monologue. Many of the parodies were produced by James Signorelli.  The industries, products, and ad formats targeted by the parodies have been wide-ranging, including fast food, beer, feminine hygiene products, toys, clothes, medications (both prescription and over-the-counter), financial institutions, automobiles, electronics, appliances, public-service announcements, infomercials, and movie & TV shows (including SNL itself).
+Many of SNL's ad parodies have been featured in prime-time clip shows over the years, including an April 1991 special hosted by Kevin Nealon and Victoria Jackson, as well as an early 1999 follow-up hosted by Will Ferrell that features his attempts to audition for a feminine hygiene commercial.  In late 2005 and in March 2009, the special was modernized, featuring commercials created sinc",0.09090909090909091,live_api,pick the best possible answer: what was the aim of the gravity probe b (gp-b) mission?,2871629058
+1446,Choose the correct answer: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? carefully.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is essential for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is key for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is essential for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,choose the correct answer: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? carefully.,306921432
+1447,Pick the best possible answer: Which mathematical function is commonly used to characterize linear time-invariant frameworks? among the listed options.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,"Principal component analysis (PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing.
+The data are linearly transformed onto a new coordinate system such that the directions (principal components) capturing the largest variation in the data can be easily identified.
+The principal components of a collection of points in a real coordinate space are a sequence of 
+  
+    
+      
+        p
+      
+    
+    {\displaystyle p}
+  
+ unit vectors, where the 
+  
+    
+      
+        i
+      
+    
+    {\displaystyle i}
+  
+-th vector is the direction of a line that best fits the data while being orthogonal to the first 
+  
+    
+      
+        i
+        −
+        1
+      
+    
+    {\displaystyle i-1}
+  
+ vectors. Here, a best-fitting line is defined as one that minimizes the average squared perpendicular distance from the points to the line. These directions (i.e., principal components) constitute an orthonormal basis in",0.11764705882352941,live_api,pick the best possible answer: which mathematical function is commonly used to characterize linear time-invariant frameworks? among the listed options.,4062372530
+1448,Choose the correct answer: What is the term used to describe the proportionality factor to the Stefan-Boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? based on the given context.,Emissivity,Wien's displacement law,Reflectance,Black-body radiation,Albedo,A,No match found.,0.0,live_api,choose the correct answer: what is the term used to describe the proportionality factor to the stefan-boltzmann law that is utilized in subsequent evaluations of the radiative behavior of grey bodies? based on the given context.,3232936351
+1449,What is the significance of the discovery of the Crab pulsar?,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+In the early 1990s, a group of astronomers led by Donald Backer, who were studying what they thought was a binary pulsar (PSR B1620−26 b), determined that a third object was needed to explain the observed Doppler shifts. Within a few years, the gravitational effects of the planet on the orbit of the pulsar and white dwarf had been measured, giving an estimate of the mass of the third object that was too small to be a star. The conclusion that the third object was a planet was announced by Stephen Thorsett and his collaborators in 1993.
+
+External links
+History of the Origin of the Chemical Elements and Their Discoverers Last updated by Boris Pritychenko on 30 March 2004
+History of Elements of the Periodic Table 
+Timeline of Element Discoveries 
+The Historyscoper
+Discovery of the Elements – The Movie – YouTube (1:18)
+The History Of Metals Timeline . A timeline showing the discovery of metals and the development of metallurgy.
+—Eric Scerri, 2007, The periodic table: Its story and its significance, Oxford University Press, New York,",0.75,local,what is the significance of the discovery of the crab pulsar?,579118895
+1450,Determine the correct option: What did Fresnel predict and verify with regards to total internal reflections? based on the given context.,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,No match found.,0.0,live_api,determine the correct option: what did fresnel predict and verify with regards to total internal reflections? based on the given context.,1872403759
+1451,Pick the best possible answer: What is spatial dispersion?,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in frameworks, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in mechanisms, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in frameworks, commonly seen in optics and electronics.",D,"A questionnaire is a research instrument that consists of a set of questions (or other types of prompts) for the purpose of gathering information from respondents through survey or statistical study. A research questionnaire is typically a mix of close-ended questions and open-ended questions. Open-ended, long-term questions offer the respondent the ability to elaborate on their thoughts. The research questionnaire was developed by the Statistical Society of London in 1838.
+Although questionnaires are often designed for statistical analysis of the responses, this is not always the case.
+Questionnaires have advantages over some other types of survey tools in that they are cheap, do not require as much effort from the questioner as verbal or telephone surveys, and often have standardized answers that make it simple to compile data. However, such standardized answers may frustrate users as the possible answers may not accurately represent their desired responses. Questionnaires are also s",0.16666666666666666,live_api,pick the best possible answer: what is spatial dispersion?,1336788401
+1452,Choose the correct answer: What is the second law of thermodynamics? among the listed options.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated frameworks left to spontaneous evolution can lower, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic structure and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.
+
+Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.
+
+Governing equations
+Continuum mechanics deals with the behavior of materials that can be approximated as continuous for certain length and time scales.  The equations that govern the mechanics of such materials include the balance laws for mass, momentum, and energy. Kinematic relations and constitutive equations are needed to complete the system of governing equations.  Physical restrictions on the form of the constitutive relations can be applied by requiring that the second law of thermodynamics be satisfied under all conditions.  In the continuum mechanics of solids, the second law of thermodynamics is satisfied if the Clausius–Duhem form of the entropy inequality is satisfied.",0.3333333333333333,local,choose the correct answer: what is the second law of thermodynamics? among the listed options.,3193342900
+1453,"Select the most accurate option: What is the throttling process, and why is it significant?","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure raise in domestic refrigerators. This process is essential because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is significant because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure drop in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature raise in domestic refrigerators. This process is essential because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is not essential because it is not used in the refrigeration cycle.",B,"Google Search (also known simply as Google or google.com) is a search engine operated by Google.  It allows users to search or ask for information by entering keywords or phrases on a website page or in an installed application program. Google Search uses algorithms to analyze and rank websites based on their relevance to the query and uses generative artificial intelligence to respond to queries with non-search responses. Google Search is the most-visited website in the world. As of 2025, Google Search has a 90% share of the global search engine market. Approximately 24.1% of Google's monthly global traffic comes from the United States, 5.6% from India, 5.5% from Japan, 4.8% from Brazil, and 3.7% from the United Kingdom according to data provided by Similarweb. The same source reports that 58% of users are male and 42% are female.
+At the top of the presented search results is often a ""Sponsored result"" section reflecting results sponsored by advertising revenue. Many search results ar",0.125,live_api,"select the most accurate option: what is the throttling process, and why is it significant?",3990736114
+1454,Which of the following is correct? What is the Evans balance? among the listed options.,"The Evans balance is a framework used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a mechanism used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a structure used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a structure used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a structure used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Tanaju is also listed in an inscription at the Mortuary Temple of Amenhotep III. Amenhotep III ruled Egypt in –1344 BC. A list of the cities and regions of the Tanaju is mentioned in this inscription. Among the cities listed are Mycenae, Nauplion, Kythera, Messenia and the Thebaid (region of Thebes).; .",0.5,local,which of the following is correct? what is the evans balance? among the listed options.,1045025509
+1455,Pick the best possible answer: What did Newton's manuscripts of the 1660s show? carefully.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,No match found.,0.0,live_api,pick the best possible answer: what did newton's manuscripts of the 1660s show? carefully.,2753110121
+1456,Choose the correct answer: What is the origin of the permanent moment in paramagnetism? based on the given context.,The permanent moment is generally due to the spin of unpaired electrons in atomic or molecular electron orbitals.,The permanent moment is due to the alignment of dipoles perpendicular to the applied field.,"The permanent moment is due to the torque provided on the magnetic moments by an applied field, which tries to align the dipoles perpendicular to the applied field.",The permanent moment is due to the quantum-mechanical properties of spin and angular momentum.,The permanent moment is due to the interaction of dipoles with one another and are randomly oriented in the absence of an external field due to thermal agitation.,A,"The permanent dipole moment  of an atom in a non-degenerate state (see Degenerate energy level) is given as the expectation (average) value of the dipole operator,
+
+1. Origin of operant behavior
+Skinner's answer to the first question was very much like Darwin's answer to the question of the origin of a 'new' bodily structure, namely, variation and selection. Similarly, the behavior of an individual varies from moment to moment; a variation that is followed by reinforcement is strengthened and becomes prominent in that individual's behavioral repertoire. Shaping was Skinner's term for the gradual modification of behavior by the reinforcement of desired variations. Skinner believed that 'superstitious' behavior can arise when a response happens to be followed by reinforcement to which it is actually unrelated.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.7,local,choose the correct answer: what is the origin of the permanent moment in paramagnetism? based on the given context.,414168712
+1457,"Which of the following is correct? What is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? based on the given context.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy framework, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+The main characteristic of the Brazilian energy matrix is that it is much more renewable than that of the world. While in 2019, the world matrix was only 14% made up of renewable energy, Brazil's was at 45%. Petroleum and oil products made up 34.3% of the matrix; sugar cane derivatives, 18%; hydraulic energy, 12.4%; natural gas, 12.2%; firewood and charcoal, 8.8%; varied renewable energies, 7%; mineral coal, 5.3%; nuclear, 1.4%, and other non-renewable energies, 0.6%.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..",0.375,local,"which of the following is correct? what is power density in the context of energy frameworks, and how does it differ between renewable and non-renewable energy sources? based on the given context.",458265975
+1458,What is a Hilbert space in quantum mechanics?,A complex vector space where the state of a classical mechanical system is described by a vector |Ψ⟩.,A physical space where the state of a classical mechanical system is described by a vector |Ψ⟩.,A physical space where the state of a quantum mechanical system is described by a vector |Ψ⟩.,A mathematical space where the state of a classical mechanical system is described by a vector |Ψ⟩.,A complex vector space where the state of a quantum mechanical system is described by a vector |Ψ⟩.,E,"In these works, Wigner laid the foundation for the theory of symmetries in quantum mechanics. Wigner's theorem, which he proved in 1931, is a cornerstone of the mathematical formulation of quantum mechanics. The theorem specifies how physical symmetries such as rotations, translations, and CPT symmetry are represented on the Hilbert space of states. According to the theorem, any symmetry transformation is represented by a linear and unitary or antilinear and antiunitary transformation of Hilbert space. The representation of a symmetry group on a Hilbert space is either an ordinary representation or a projective representation.
+
+By the Riesz representation theorem, the continuous dual of a Hilbert space is again a Hilbert space which is anti-isomorphic to the original space.
+This gives rise to the bra–ket notation used by physicists in the mathematical formulation of quantum mechanics.
+
+The mathematical structure of quantum mechanics is based in large part on linear algebra:
+Wave functions and other quantum states can be represented as vectors in a separable complex Hilbert space. (The exact structure of this Hilbert space depends on the situation.) In bra–ket notation, for example, an electron might be in the ""state"" . (Technically, the quantum states are rays of vectors in the Hilbert space, as  corresponds to the same state for any nonzero complex number .)
+Quantum superpositions can be described as vector sums of the constituent states. For example, an electron in the state  is in a quantum superposition of the states  and .
+Measurements are associated with linear operators (called observables) on the Hilbert space of quantum states.
+Dynamics are also described by linear operators on the Hilbert space. For example, in the Schrödinger picture, there is a linear time evolution operator  with the property that if an electron is in state  right now, at a later time it will be in the state , the same  for every possible .
+Wave function normalization is scaling a wave function so that its norm is 1.",1.0,local,what is a hilbert space in quantum mechanics?,1070225051
+1459,Determine the correct option: What is the main factor that determines the occurrence of each type of supernova? from the following choices.,The star's distance from Earth,The star's age,The star's temperature,The star's luminosity,The progenitor star's metallicity,E,"Fixing or choosing the x-axis determines the y-axis up to direction. Namely, the y-axis is necessarily the perpendicular to the x-axis through the point marked 0 on the x-axis. But there is a choice of which of the two half lines on the perpendicular to designate as positive and which as negative. Each of these two choices determines a different orientation (also called handedness) of the Cartesian plane.
+
+Supernova 1987A was the closest supernova to occur since the invention of the telescope. SNR 0509-67.5 is the remnant of an unusually energetic Type Ia supernova from about 400 years ago.
+
+The atomic number of an element is equal to the number of protons in each atom, and defines the element. For example, all carbon atoms contain 6 protons in their atomic nucleus; so the atomic number of carbon is 6. The number of protons in the nucleus determines its electric charge, which in turn determines the number of bound electrons of an atom in its non-ionized state. The electrons occupy atomic orbitals that determine the atom's chemical properties.",0.5384615384615384,local,determine the correct option: what is the main factor that determines the occurrence of each type of supernova? from the following choices.,3605486733
+1460,Determine the correct option: What is the relationship between interstellar and cometary chemistry? among the listed options.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,No match found.,0.0,live_api,determine the correct option: what is the relationship between interstellar and cometary chemistry? among the listed options.,1380816839
+1461,Identify the correct statement: What is explicit symmetry breaking in theoretical physics? from the following choices.,"Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that do not respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that do not respect the symmetry, usually in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a framework by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the framework.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, usually in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.",B,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.2,live_api,identify the correct statement: what is explicit symmetry breaking in theoretical physics? from the following choices.,1528925432
+1462,Determine the correct option: What is the interstellar medium (ISM)? based on the given context.,"The matter and radiation that exist in the space between the star structures in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar structure, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.
+
+Entity ρ (kg/m3) Notes Interstellar medium     Based on 10 hydrogen atoms per cubic centimetre Local Interstellar Cloud    Based on 0.3 hydrogen atoms per cubic centimetre Interstellar medium     Based on 10 hydrogen atoms per cubic centimetre The Earth             5,515  Mean density. Earth's inner core  13,000  Approx., as listed in Earth. The core of the Sun   33,000–160,000  Approx. White dwarf star        Approx. Atomic nuclei           Does not depend strongly on size of nucleus Neutron star
+
+Interstellar medium
+The cyanide radical •CN has been identified in interstellar space. Cyanogen, , is used to measure the temperature of interstellar gas clouds.",0.4444444444444444,local,determine the correct option: what is the interstellar medium (ism)? based on the given context.,1979309217
+1463,Identify the correct statement: What is the Ozma Problem? based on the given context.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.75,local,identify the correct statement: what is the ozma problem? based on the given context.,1269420634
+1464,Determine the correct option: What is the information loss paradox in black holes? carefully.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.",0.6666666666666666,local,determine the correct option: what is the information loss paradox in black holes? carefully.,922337275
+1465,Choose the correct answer: What are permutation-inversion groups? based on the given context.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"In mathematics, the Bernoulli numbers Bn are a sequence of rational numbers which occur frequently in analysis. The Bernoulli numbers appear in (and can be defined by) the Taylor series expansions of the tangent and hyperbolic tangent functions, in Faulhaber's formula for the sum of m-th powers of the first n positive integers, in the Euler–Maclaurin formula, and in expressions for certain values of the Riemann zeta function.
+The values of the first 20 Bernoulli numbers are given in the adjacent table. Two conventions are used in the literature, denoted here by 
+  
+    
+      
+        
+          B
+          
+            n
+          
+          
+            −
+            
+
+            
+          
+        
+      
+    
+    {\displaystyle B_{n}^{-{}}}
+  
+ and 
+  
+    
+      
+        
+          B
+          
+            n
+          
+          
+            +
+            
+
+            
+          
+        
+      
+    
+    {\displaystyle B_{n}^{+{}}}
+  
+; they differ only for n = 1, where",0.1111111111111111,live_api,choose the correct answer: what are permutation-inversion groups? based on the given context.,3656323363
+1466,Choose the correct answer: What is the propagation constant in sinusoidal waves? carefully.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.0,live_api,choose the correct answer: what is the propagation constant in sinusoidal waves? carefully.,38982129
+1467,Identify the correct statement: What is the interpretation of supersymmetry in stochastic supersymmetric principle? from the following choices.,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,"Supersymmetry is a theoretical framework in physics that suggests the existence of a symmetry between particles with integer spin (bosons) and particles with half-integer spin (fermions). It proposes that for every known particle, there exists a partner particle with different spin properties. There have been multiple experiments on supersymmetry that have failed to provide evidence that it exists in nature. If evidence is found, supersymmetry could help explain certain phenomena, such as the nature of dark matter and the hierarchy problem in particle physics.
+A supersymmetric theory is a theory in which the equations for force and the equations for matter are identical. In theoretical and mathematical physics, any theory with this property has the principle of supersymmetry (SUSY). Dozens of supersymmetric theories exist. In theory, supersymmetry is a type of spacetime symmetry between two basic classes of particles: bosons, which have an integer-valued spin and follow Bose–Einstein s",0.3,local,identify the correct statement: what is the interpretation of supersymmetry in stochastic supersymmetric principle? from the following choices.,1050810134
+1468,Which of the following is correct? Which of the following statements accurately describes the dimension of an object in a CW complex? carefully.,"The dimension of an object in a CW complex is the largest n for which the n-skeleton is nontrivial, where the empty set is considered to have dimension -1 and the boundary of a discrete set of points is the empty set.","The dimension of an object in a CW complex is determined by the number of critical points the object contains. The boundary of a discrete set of points is considered to have dimension 1, while the empty set is given a dimension of 0.","The dimension of an object in a CW complex is the smallest n for which the n-skeleton is nontrivial. The empty set is given a dimension of -1, while the boundary of a discrete set of points is assigned a dimension of 0.","The dimension of an object in a CW complex is calculated by counting the number of cells of all dimensions in the object. The empty set is given a dimension of 0, while the boundary of a discrete set of points is assigned a dimension of -1.",The dimension of an object in a CW complex depends on the number of singularities in the object. The empty set and the boundary of a discrete set of points are both assigned a dimension of 0.,A,"Similarly, for the class of CW complexes, the dimension of an object is the largest  for which the -skeleton is nontrivial. Intuitively, this can be described as follows: if the original space can be continuously deformed into a collection of higher-dimensional triangles joined at their faces with a complicated surface, then the dimension of the object is the dimension of those triangles.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+The dimension is an intrinsic property of an object, in the sense that it is independent of the dimension of the space in which the object is or can be embedded. For example, a curve, such as a circle, is of dimension one, because the position of a point on a curve is determined by its signed distance along the curve to a fixed point on the curve. This is independent from the fact that a curve cannot be embedded in a Euclidean space of dimension lower than two, unless it is a line. Similarly, a surface is of dimension two, even if embedded in three-dimensional space.",0.36363636363636365,local,which of the following is correct? which of the following statements accurately describes the dimension of an object in a cw complex? carefully.,1207545495
+1469,Select the most accurate option: What is the relationship between Coordinated Universal Time (UTC) and Universal Time (UT1)? carefully.,UTC and Universal Time (UT1) are identical time scales that are used interchangeably in science and engineering.,"UTC is a time scale that is completely independent of Universal Time (UT1). UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by a non-integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by an integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".",UTC is a time scale that is based on the irregularities in Earth's rotation and is completely independent of Universal Time (UT1).,D,"The BIPM has an important role in maintaining accurate worldwide time of day. It combines, analyses, and averages the official atomic time standards of member nations around the world to create a single, official Coordinated Universal Time (UTC).
+
+Relation to UTC 
+Contrary to TAI, UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time by a constant offset. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2.  Afterwards, these adjustments were made only in whole seconds to approximate UT1. This was a compromise arrangement in order to enable a publicly broadcast time scale. The less frequent whole-second adjustments meant that the time scale would be more stable and easier to synchronize internationally. The fact that it continues to approximate UT1 means that tasks, such as navigation, which require a source of Universal Time continue to be well served by the public broadcast of UTC.",0.5833333333333334,local,select the most accurate option: what is the relationship between coordinated universal time (utc) and universal time (ut1)? carefully.,175869923
+1470,Choose the correct answer: What is a trophic level in an ecological pyramid?,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecoframework.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecomechanism.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""",0.5714285714285714,local,choose the correct answer: what is a trophic level in an ecological pyramid?,2162559262
+1471,Identify the correct statement: What is the definition of an improper rotation? carefully.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"Substitution is replacing the terms in an expression to create a new expression. Substituting 3 for  in the expression  makes a new expression  with meaning . Substituting the terms of a statement makes a new statement. When the original statement is true independently of the values of the terms, the statement created by substitutions is also true. Hence, definitions can be made in symbolic terms and interpreted through substitution: if  is meant as the definition of  as the product of  with itself, substituting  for  informs the reader of this statement that  means . Often it's not known whether the statement is true independently of the values of the terms. And, substitution allows one to derive restrictions on the possible values, or show what conditions the statement holds under. For example, taking the statement , if  is substituted with , this implies , which is false, which implies that if  then  cannot be .
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+Isaac Newton's rotating bucket argument (also known as Newton's bucket) is a thought experiment that was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.  It is one of five arguments from the ""properties, causes, and effects"" of ""true motion and rest"" that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by ""absolute rotation"", and do not pretend to address the question of ""rotation relative to what?"" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime.",0.5714285714285714,local,identify the correct statement: what is the definition of an improper rotation? carefully.,2981655414
+1472,Choose the correct answer: What is the main sequence in astronomy? among the listed options.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar framework.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"The cutaway does not necessarily contribute any dramatic content of its own, but is used to help the editor assemble a longer sequence. For that reason, editors choose cutaways related to the main action, such as another action or object in the same location.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.5555555555555556,local,choose the correct answer: what is the main sequence in astronomy? among the listed options.,3340838752
+1473,Select the most accurate option: What is a pycnometer? carefully.,A device used to measure the density of a gas.,A device used to measure the mass of a liquid.,A device used to measure the volume of a gas.,A device used to determine the density of a liquid.,A device used to determine the volume of a liquid.,D,No match found.,0.0,live_api,select the most accurate option: what is a pycnometer? carefully.,394166152
+1474,Determine the correct option: What is water hammer? among the listed options.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing frameworks.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to enhance the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.375,local,determine the correct option: what is water hammer? among the listed options.,3123990314
+1475,Identify the correct statement: What is the Roche limit? carefully.,The Roche limit is the distance at which tidal effects would cause an object to rotate since the forces exerted by two massive bodies produce a torque on a third object.,The Roche limit is the distance at which tidal effects would cause an object to unite since differential force from a planet results in parts becoming attracted to one another.,The Roche limit is the distance at which tidal effects would cause a planet to disintegrate since differential force from an object overcomes the planet's core.,The Roche limit is the distance at which tidal effects would cause an object to disintegrate since differential force from a planet overcomes the attraction of the parts between them.,"The Roche limit is the distance at which tidal effects would cause an object to break apart due to differential force from the planet overcoming the attraction of the parts of the object for one another, which depends on the object's density and composition, as well as the mass and size of the planet.",D,"The orbit of Adrastea lies inside Jupiter's synchronous orbit radius (as does Metis's), and as a result, tidal forces are slowly causing its orbit to decay so that it will one day impact Jupiter. If its density is similar to Amalthea's then its orbit would actually lie within the fluid Roche limit. However, since it is not breaking up, it must still lie outside its rigid Roche limit.",0.3333333333333333,local,identify the correct statement: what is the roche limit? carefully.,174273522
+1476,Pick the best possible answer: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? based on the given context.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.5,local,pick the best possible answer: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? based on the given context.,3603323187
+1477,Identify the correct statement: What is classical mechanics? among the listed options.,"Classical mechanics is the branch of physics that describes the motion of macroscopic objects using concepts such as mass, acceleration, and force. It is based on a three-dimensional Euclidean space with fixed axes, and utilises many equations and mathematical concepts to relate physical quantities to one another.","Classical mechanics is the branch of physics that describes the motion of microscopic objects using concepts such as energy, momentum, and wave-particle duality. It is based on a four-dimensional space-time continuum and utilises many equations and mathematical concepts to relate physical quantities to one another.",Classical mechanics is the branch of physics that studies the behaviour of subatomic particles such as electrons and protons. It is based on the principles of quantum mechanics and utilises many equations and mathematical concepts to describe the properties of these particles.,Classical mechanics is the branch of physics that studies the behaviour of light and electromagnetic radiation. It is based on the principles of wave-particle duality and utilises many equations and mathematical concepts to describe the properties of light.,Classical mechanics is the branch of physics that studies the behaviour of fluids and gases. It is based on the principles of thermodynamics and utilises many equations and mathematical concepts to describe the properties of these substances.,A,"The Galileo affair was an early 17th century political, religious, and scientific controversy regarding the astronomer Galileo Galilei's defence of heliocentrism, the idea that the Earth revolves around the Sun. It pitted supporters and opponents of Galileo within both the Catholic Church and academia against each other through two phases: an interrogation and condemnation of Galileo's ideas by a panel of the Roman Inquisition in 1616, and a second trial in 1632 which led to Galileo's house arrest and a ban on his books.
+In 1610, Galileo published his Sidereus Nuncius (Starry Messenger) describing the observations that he had made with his new, much stronger telescope, amongst them the Galilean moons of Jupiter. With these observations and additional observations that followed, such as the phases of Venus, he promoted the heliocentric theory of Nicolaus Copernicus published in De revolutionibus orbium coelestium in 1543. Galileo's opinions were met with opposition within the Catholic C",0.0,live_api,identify the correct statement: what is classical mechanics? among the listed options.,3021246817
+1478,Which of the following is correct? What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? based on the given context.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,"The ratio in the definition of the derivative is the slope of the line through two points on the graph of the function , specifically the points  and . As  is made smaller, these points grow closer together, and the slope of this line approaches the limiting value, the slope of the tangent to the graph of  at . In other words, the derivative is the slope of the tangent.
+
+Other biblical figures
+Apart from the king (or kings) of Gerar, the Bible also records this name for:
+The father of Abiathar, and high priest in the time of David. In the parallel passage, the name is given as Ahimelech; most authorities consider this the more correct reading.
+The king of Gath better known as Achish, referred to as Abimelech or Achimelech in the title of Psalm 34.
+The husband of Naomi, and father of Mahlon and Chilion who leaves Bethlehem and dies in the land of Moab, in the Hebrew, his name is given as Elimelek, which is likely the correct reading.
+
+This gives an exact value for the slope of a straight line. If the graph of the function is not a straight line, however, then the change in  divided by the change in  varies. Derivatives give an exact meaning to the notion of change in output concerning change in input. To be concrete, let  be a function, and fix a point  in the domain of .  is a point on the graph of the function. If  is a number close to zero, then  is a number close to . Therefore,  is close to . The slope between these two points is",0.3684210526315789,local,which of the following is correct? what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? based on the given context.,3464925268
+1479,Determine the correct option: What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics?,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a framework of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the framework. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a structure of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.",0.6666666666666666,local,determine the correct option: what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics?,2704321844
+1480,Which of the following is correct? What is the relationship between interstellar and cometary chemistry? carefully.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,"Interstellar destruction mechanisms 
+There are 113 total proposed reactions leading to the destruction of . Of these, 39 were tabulated in extensive tables of the chemistry among C, N and O compounds. A review of interstellar ammonia cites the following reactions as the principal dissociation mechanisms:
+
+The events of SL9's interaction with Jupiter greatly highlighted Jupiter's role in protecting the inner planets from both interstellar and in-system debris by acting as a ""cosmic vacuum cleaner"" for the Solar System (Jupiter barrier). The planet's strong gravitational influence attracts many small comets and asteroids and the rate of cometary impacts on Jupiter is thought to be between 2,000 and 8,000 times higher than the rate on Earth.
+
+Inorganic chemistry is the study of the properties and reactions of inorganic compounds. The distinction between organic and inorganic disciplines is not absolute and there is much overlap, most importantly in the sub-discipline of organometallic chemistry. The Inorganic chemistry is also the study of atomic and molecular structure and bonding.
+Medicinal chemistry is the science involved with designing, synthesizing and developing pharmaceutical drugs. Medicinal chemistry involves the identification, synthesis and development of new chemical entities suitable for therapeutic use. It also includes the study of existing drugs, their biological properties, and their quantitative structure-activity relationships.
+Organic chemistry is the study of the structure, properties, composition, mechanisms, and chemical reaction of carbon compounds.
+Physical chemistry is the study of the physical fundamental basis of chemical systems and processes. In particular, the energetics and dynamics of such systems and processes are of interest to physical chemists. Important areas of study include chemical thermodynamics, chemical kinetics, electrochemistry, quantum chemistry, statistical mechanics, and spectroscopy. Physical chemistry has a large overlap with theoretical chemistry and molecular physics. Physical chemistry involves the use of calculus in deriving equations.
+Theoretical chemistry is the study of chemistry via theoretical reasoning (usually within mathematics or physics). In particular, the application of quantum mechanics to chemistry is called quantum chemistry. Since the end of the Second World War, the development of computers has allowed a systematic development of computational chemistry, which is the art of developing and applying computer programs for solving chemical problems. Theoretical chemistry has large overlap with condensed matter physics and molecular physics. See reductionism.",0.6666666666666666,local,which of the following is correct? what is the relationship between interstellar and cometary chemistry? carefully.,504462417
+1481,Choose the correct answer: What is the main focus of cryogenic and noble liquid detectors in dark matter experiments?,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.
+
+WIMP searches mostly use either cryogenic or noble liquid detector technologies. Cryogenic detectors, operating at temperatures below 100 mK, detect the heat produced when a particle hits an atom in a crystal absorber such as germanium. Experiments using this technology include SuperCDMS and EDELWEISS.
+
+Scientific research
+Liquid argon is used as the target for neutrino experiments and direct dark matter searches. The interaction between the hypothetical WIMPs and an argon nucleus produces scintillation light that is detected by photomultiplier tubes. Two-phase detectors containing argon gas are used to detect the ionized electrons produced during the WIMP–nucleus scattering. As with most other liquefied noble gases, argon has a high scintillation light yield (about 51 photons/keV), is transparent to its own scintillation light, and is relatively easy to purify. Compared to xenon, argon is cheaper and has a distinct scintillation time profile, which allows the separation of electronic recoils from nuclear recoils. On the other hand, its intrinsic beta-ray background is larger due to  contamination, unless one uses argon from underground sources, which has much less  contamination. Most of the argon in Earth's atmosphere was produced by electron capture of long-lived  ( + e− →  + ν) present in natural potassium within Earth. The  activity in the atmosphere is maintained by cosmogenic production through the knockout reaction (n,2n) and similar reactions. The half-life of  is only 269 years. As a result, the underground Ar, shielded by rock and water, has much less  contamination. Dark-matter detectors currently operating with liquid argon include DarkSide, WArP, ArDM, microCLEAN and DEAP. Neutrino experiments include ICARUS and MicroBooNE, both of which use high-purity liquid argon in a time projection chamber for fine grained three-dimensional imaging of neutrino interactions.",0.5833333333333334,local,choose the correct answer: what is the main focus of cryogenic and noble liquid detectors in dark matter experiments?,3638785691
+1482,Which of the following is correct? What is the variation between illuminance and luminance? based on the given context.,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,"Instead, the RGB signals are converted into YUV form, where the Y signal represents the luminance of the colors in the image. Because the rendering of colors in this way is the goal of both monochrome film and television systems, the Y signal is ideal for transmission as the luminance signal. This ensures a monochrome receiver will display a correct picture in black and white, where a given color is reproduced by a shade of gray that correctly reflects how light or dark the original color is.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Analysis of variance (ANOVA) is a family of statistical methods used to compare the means of two or more groups by analyzing variance. Specifically, ANOVA compares the amount of variation between the group means to the amount of variation within each group. If the between-group variation is substantially larger than the within-group variation, it suggests that the group means are likely different. This comparison is done using an F-test. The underlying principle of ANOVA is based on the law of total variance, which states that the total variance in a dataset can be broken down into components attributable to different sources. In the case of ANOVA, these sources are the variation between groups and the variation within groups.",0.8,local,which of the following is correct? what is the variation between illuminance and luminance? based on the given context.,283950719
+1483,Identify the correct statement: What are the Navier-Stokes equations?,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.5,local,identify the correct statement: what are the navier-stokes equations?,2516836748
+1484,Pick the best possible answer: What is the main focus of the Environmental Science Center at Qatar University? among the listed options.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Robert Francis Kennedy Jr. (born January 17, 1954), also known by his initials RFK Jr., is an American politician, environmental lawyer, author, conspiracy theorist, and anti-vaccine activist serving as the 26th United States secretary of health and human services since 2025. A member of the prominent Kennedy family, he is a son of Senator and US attorney general Robert F. Kennedy and a nephew of US president John F. Kennedy and US senator Ted Kennedy.
+Kennedy began his career as an assistant district attorney in Manhattan. In the mid-1980s, he joined two nonprofits focused on environmental protection: Riverkeeper and the Natural Resources Defense Council (NRDC). In 1986, he became an adjunct professor of environmental law at Pace University School of Law, and in 1987 he founded Pace's Environmental Litigation Clinic. In 1999, Kennedy founded the nonprofit environmental group Waterkeeper Alliance. He first ran as a member of the Democratic Party and later started an independent campaig",0.14285714285714285,live_api,pick the best possible answer: what is the main focus of the environmental science center at qatar university? among the listed options.,3601822541
+1485,Select the most accurate option: What is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or Copernican principles that can be used to address specific issues in the Lambda-CDM model and distinguish between current models and other possible models? among the listed options.,"The Copernican principle, which proposes that Earth, the Solar mechanism, and the Milky Way are not at the centre of the universe, but instead, the universe is expanding equally in all directions. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","Inhomogeneous cosmology, which states that the universe is entirely homogeneous and isotropic, directly proportional to the density of matter and radiation. This model proposes that everything in the universe is completely uniform, but it does not match observations.","Inhomogeneous cosmology, which models the universe as an extremely large, low-density void, instead of using the concept of dark energy. According to the model, this framework can match the observed accelerating universe and cosmological constant, but it contradicts the Copernican principle.","The cosmological principle, which proposes that Earth, the Solar mechanism, and the Milky Way are at the centre of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","The principle of dark energy, which proposes that a new form of energy, not previously detected, is responsible for the acceleration of the expansion of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.",C,"Physics without the principle
+The standard model of cosmology, the Lambda-CDM model, assumes the Copernican principle and the more general cosmological principle. Some cosmologists and theoretical physicists have created models without the cosmological or Copernican principles to constrain the values of observational results, to address specific known issues in the Lambda-CDM model, and to propose tests to distinguish between current models and other possible models.",0.5882352941176471,local,select the most accurate option: what is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or copernican principles that can be used to address specific issues in the lambda-cdm model and distinguish between current models and other possible models? among the listed options.,3542984532
+1486,Which of the following is correct? What is the relationship between the amplitude of a sound wave and its loudness? among the listed options.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.46153846153846156,local,which of the following is correct? what is the relationship between the amplitude of a sound wave and its loudness? among the listed options.,1532606158
+1487,Which of the following is correct? What is a phageome? among the listed options.,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+However, for options and more complex derivatives, pricing involves developing a complex pricing model: understanding the stochastic process of the price of the underlying asset is often crucial. A key equation for the theoretical valuation of options is the Black–Scholes formula, which is based on the assumption that the cash flows from a European stock option can be replicated by a continuous buying and selling strategy using only the stock. A simplified version of this valuation technique is the binomial options model.",0.5714285714285714,local,which of the following is correct? what is a phageome? among the listed options.,2220327018
+1488,"Select the most accurate option: What is a transient condensation cloud, also known as a Wilson cloud? based on the given context.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Present-day climate change includes both global warming—the ongoing increase in global average temperature—and its wider effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to Earth's climate. The modern-day rise in global temperatures is driven by human activities, especially fossil fuel (coal, oil and natural gas) burning since the Industrial Revolution. Fossil fuel use, deforestation, and some agricultural and industrial practices release greenhouse gases. These gases absorb some of the heat that the Earth radiates after it warms from sunlight, warming the lower atmosphere. Earth's atmosphere now has roughly 50% more carbon dioxide, the main gas driving global warming, than it did at the end of the pre-industrial era, reaching levels not seen for millions of years.
+Climate change has an increasingly large impact on the environment. Heat waves and wildfires are becoming more common. Amplified warming in the Arctic has contribu",0.07692307692307693,live_api,"select the most accurate option: what is a transient condensation cloud, also known as a wilson cloud? based on the given context.",2786731881
+1489,Choose the correct answer: Who was the first person to describe the pulmonary circulation mechanism? among the listed options.,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Pheochromocytoma (British English: phaeochromocytoma) is a rare tumor of the adrenal medulla composed of chromaffin cells and is a pharmacologically volatile, potentially lethal catecholamine-containing tumor of chromaffin tissue. It is part of the paraganglioma (PGL). These neuroendocrine tumors can be sympathetic, where they release catecholamines into the bloodstream which cause the most common symptoms, including hypertension (high blood pressure), tachycardia (fast heart rate), sweating, and headaches. Some PGLs may secrete little to no catecholamines, or only secrete paroxysmally (episodically), and other than secretions, PGLs can still become clinically relevant through other secretions or mass effect (most common with head and neck PGL). PGLs of the head and neck are typically parasympathetic and their sympathetic counterparts are predominantly located in the abdomen and pelvis, particularly concentrated at the organ of Zuckerkandl at the bifurcation of the aorta.",0.0,live_api,choose the correct answer: who was the first person to describe the pulmonary circulation mechanism? among the listed options.,230023144
+1490,"Determine the correct option: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? carefully.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)
+
+This acceleration and the mass of the particle determine the necessary centripetal force, directed toward the centre of the circle, as the net force acting on this particle to keep it in this uniform circular motion. The so-called 'centrifugal force', appearing to act outward on the body, is a so-called pseudo force experienced in the frame of reference of the body in circular motion, due to the body's linear momentum, a vector tangent to the circle of motion.",0.5,local,"determine the correct option: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? carefully.",1016088255
+1491,What are the two main factors that cause resistance in a metal?,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"The third mode is parapatric speciation. This is similar to peripatric speciation in that a small population enters a new habitat, but differs in that there is no physical separation between these two populations. Instead, speciation results from the evolution of mechanisms that reduce gene flow between the two populations. Generally this occurs when there has been a drastic change in the environment within the parental species' habitat. One example is the grass Anthoxanthum odoratum, which can undergo parapatric speciation in response to localised metal pollution from mines. Here, plants evolve that have resistance to high levels of metals in the soil. Selection against interbreeding with the metal-sensitive parental population produced a gradual change in the flowering time of the metal-resistant plants, which eventually produced complete reproductive isolation. Selection against hybrids between the two populations may cause reinforcement, which is the evolution of traits that promote mating within a species, as well as character displacement, which is when two species become more distinct in appearance.
+
+Possessed, a band that formed in the San Francisco Bay Area during 1983, is described by AllMusic as ""connecting the dots"" between thrash metal and death metal with their 1985 debut album, Seven Churches. While attributed as having a Slayer influence, current and former members of the band had actually cited Venom and Motörhead, as well as early work by Exodus, as the main influences on their sound. Although the group had released only two studio albums and an EP in their formative years, they have been described by music journalists and musicians as either being ""monumental"" in developing the death metal style, or as being the first death metal band. Earache Records noted that ""the likes of Trey Azagthoth and Morbid Angel based what they were doing in their formative years on the Possessed blueprint laid down on the legendary Seven Churches recording. Possessed arguably did more to further the cause of 'Death Metal' than any of the early acts on the scene back in the mid-late 80's.""
+
+The sociology of education is concerned with how education leads to socialization. It examines how social factors and ideologies affect what kind of education is available to a person and how successful they are. Closely related questions include how education affects different groups in society and how educational experiences can form someone's personal identity. The sociology of education is specifically interested in the causes of inequalities, and its insights are relevant to education policy by trying to identify and mitigate factors that cause inequality. Two influential schools of thought are consensus theory and conflict theory. Consensus theorists hold that education benefits society as a whole by preparing people for their roles. Conflict theories have a more negative outlook on the resulting inequalities and see education as a force used by the ruling class to promote their own agenda.",1.0,local,what are the two main factors that cause resistance in a metal?,1088422644
+1492,Identify the correct statement: What are the Navier-Stokes equations? based on the given context.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.3333333333333333,local,identify the correct statement: what are the navier-stokes equations? based on the given context.,3661496403
+1493,Determine the correct option: What is the variation between redshift due to the expansion of the universe and Doppler redshift?,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the raise of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no contrast between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the boost of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.6,local,determine the correct option: what is the variation between redshift due to the expansion of the universe and doppler redshift?,2776677805
+1494,Determine the correct option: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? based on the given context.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,determine the correct option: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? based on the given context.,1013631513
+1495,"Which of the following is correct? What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope? from the following choices.","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.
+
+When Ernst Öpik estimated the density of visual binary stars in 1916, he found that 40 Eridani B had a density of over  times that of the Sun, which was so high that he called it ""impossible"".
+As Eddington pointed out in 1924, densities of this order implied that, according to the theory of general relativity, the light from Sirius B should be gravitationally redshifted.
+A number of experimenters initially claimed to have identified the effect using astronomical measurements, and the effect was considered to have been finally identified in the spectral lines of the star Sirius B by W.S. Adams in 1925.Hetherington, N. S., ""Sirius B and the gravitational redshift - an historical review"", Quarterly Journal Royal Astronomical Society, vol. 21, Sept. 1980, pp. 246–252. Accessed 6 April 2017. However, measurements by Adams have been criticized as being too lowHolberg, J. B., ""Sirius B and the Measurement of the Gravitational Redshift"", Journal for the History of Astronomy, vol. 41, 1, 2010, pp. 41–64. Accessed 6 April 2017. and these observations are now considered to be measurements of spectra that are unusable because of scattered light from the primary, Sirius A. The first accurate measurement of the gravitational redshift of a white dwarf was done by Popper in 1954, measuring a 21 km/s gravitational redshift of 40 Eridani B. The redshift of Sirius B was finally measured by Greenstein et al. in 1971, obtaining the value for the gravitational redshift of 89±16 km/s, with more accurate measurements by the Hubble Space Telescope, showing 80.4±4.8 km/s.Effective Temperature, Radius, and Gravitational Redshift of Sirius B, J. L. Greenstein, J.B. Oke, H. L. Shipman, Astrophysical Journal 169 (Nov. 1, 1971), pp. 563–566.
+
+On larger scales, large galaxy redshift surveys may be used to make a three-dimensional map of the galaxy distribution. These maps are slightly distorted because distances are estimated from observed redshifts; the redshift contains a contribution from the galaxy's so-called peculiar velocity in addition to the dominant Hubble expansion term. On average, superclusters are expanding more slowly than the cosmic mean due to their gravity, while voids are expanding faster than average. In a redshift map, galaxies in front of a supercluster have excess radial velocities towards it and have redshifts slightly higher than their distance would imply, while galaxies behind the supercluster have redshifts slightly low for their distance. This effect causes superclusters to appear squashed in the radial direction, and likewise voids are stretched. Their angular positions are unaffected. This effect is not detectable for any one structure since the true shape is not known, but can be measured by averaging over many structures. It was predicted quantitatively by Nick Kaiser in 1987, and first decisively measured in 2001 by the 2dF Galaxy Redshift Survey. Results are in agreement with the Lambda-CDM model.",0.625,local,"which of the following is correct? what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope? from the following choices.",2452675746
+1496,Determine the correct option: What is the gravitomagnetic interaction? carefully.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general principle of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Legal scholar Jim Drennan, an expert on the court system at the Institute of Government at the University of North Carolina at Chapel Hill, told the Winston-Salem Journal in a 2007 interview that the ability to use this form of guilty plea as an option in courts had a far-reaching effect throughout the United States: ""We have lots of laws, but human interaction creates unique circumstances and the law has to adapt."" He added that the Supreme Court ""had to make a decision about what to do. One of the things the court has to do is figure out how to answer new questions, and that is what happened in this case.""
+
+TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.",0.8333333333333334,local,determine the correct option: what is the gravitomagnetic interaction? carefully.,2870203820
+1497,Determine the correct option: What is the interpretation of supersymmetry in stochastic supersymmetric framework? among the listed options.,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,No match found.,0.0,live_api,determine the correct option: what is the interpretation of supersymmetry in stochastic supersymmetric framework? among the listed options.,996700264
+1498,Choose the correct answer: What is the reason for heating metals to a temperature just above the upper critical temperature? based on the given context.,"To prevent the grains of solution from growing too large, which reduces mechanical properties such as toughness, shear strength, and tensile strength.","To boost the size of the grains of solution, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too large, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too small, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To boost the size of the grains of solution, which reduces mechanical properties such as toughness, shear strength, and tensile strength.",C,"At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of the material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with ""ceramic"" in the context of ceramic capacitors for just this reason.
+
+Color temperature in astronomy
+In astronomy, the color temperature is defined by the local slope of the SPD at a given wavelength, or, in practice, a wavelength range. Given, for example, the color magnitudes B and V which are calibrated to be equal for an A0V star (e.g. Vega), the stellar color temperature  is given by the temperature for which the color index  of a black-body radiator fits the stellar one. Besides the , other color indices can be used as well. The color temperature (as well as the correlated color temperature defined above) may differ largely from the effective temperature given by the radiative flux of the stellar surface. For example, the color temperature of an A0V star is about 15000 K compared to an effective temperature of about 9500 K.
+
+in 3D uniform space. This is equivalent to the above condition on the temperature. In a 3D harmonic potential, the critical value is instead",0.5,local,choose the correct answer: what is the reason for heating metals to a temperature just above the upper critical temperature? based on the given context.,2995051397
+1499,Identify the correct statement: Who was the first person to describe the pulmonary circulation framework? among the listed options.,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. The heart and blood vessels together make up the circulatory system. The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. In humans, the heart is approximately the size of a closed fist and is located between the lungs, in the middle compartment of the chest, called the mediastinum.
+In humans, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles. Commonly, the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart. In a healthy heart, blood flows one way through the heart due to heart valves, which prevent backflow. The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium",0.0,live_api,identify the correct statement: who was the first person to describe the pulmonary circulation framework? among the listed options.,2363483066
+1500,What is the main advantage of ferroelectric memristors?,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"In turn, pyroelectricity is seen most strongly in materials that also display the ferroelectric effect, in which a stable electric dipole can be oriented or reversed by applying an electrostatic field. Pyroelectricity is also a necessary consequence of ferroelectricity. This can be used to store information in ferroelectric capacitors, elements of ferroelectric RAM.
+
+The main advantage of the warping phenomenon is the absence of aliasing distortion of the frequency response characteristic, such as observed with Impulse invariance.
+
+The main advantage of this approach is that it is straightforward to add information into the database. Disadvantages include that, because of the large number of tables, it can be difficult for users to join data from different sources into meaningful information and access the information without a precise understanding of the date sources and the data structure of the data warehouse.",0.75,local,what is the main advantage of ferroelectric memristors?,2316753388
+1501,Identify the correct statement: Which of the following statements is true about the categorization of planetary structures according to their orbital dynamics? from the following choices.,Planetary frameworks cannot be categorized based on their orbital dynamics.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the framework.",Planetary structures can only be categorized as resonant or non-resonant-interacting.,"Planetary structures can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary mechanisms can only be categorized as hierarchical or non-hierarchical.,D,"Statements implying the negation of AC
+There are models of Zermelo-Fraenkel set theory in which the axiom of choice is false. We shall abbreviate ""Zermelo-Fraenkel set theory plus the negation of the axiom of choice"" by ZF¬C. For certain models of ZF¬C, it is possible to validate the negation of some standard ZFC theorems. As any model of ZF¬C is also a model of ZF, it is the case that for each of the following statements, there exists a model of ZF in which that statement is true.",0.3125,local,identify the correct statement: which of the following statements is true about the categorization of planetary structures according to their orbital dynamics? from the following choices.,1249104955
+1502,Identify the correct statement: What is the cause of the observed change in the periods of moons orbiting a distant planet when measured from Earth? carefully.,"The contrast in the size of the planet's moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the speed of light when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The contrast in distance travelled by light from the planet (or its moon) to Earth when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The contrast in the atmospheric conditions of the planet when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The variation in the gravitational pull of the planet on its moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the variation in distance being the diameter of the Earth's orbit around the Sun.",C,"The Moon is a relatively large, terrestrial, planet-like natural satellite, with a diameter about one-quarter of Earth's. It is the largest moon in the Solar System relative to the size of its planet, although Charon is larger relative to the dwarf planet Pluto. The natural satellites of other planets are also referred to as ""moons"", after Earth's. The Moon and Earth orbit a common barycenter every 27.32 days relative to the background stars. When combined with the Earth–Moon system's common orbit around the Sun, the period of the synodic month, from new moon to new moon, is 29.53 days.
+
+Galileo used  for  (Latin: I have observed the most distant planet to have a triple form) for discovering the rings of Saturn in 1610. Galileo announced his discovery that Venus had phases like the Moon in the form  (Latin: These immature ones have already been read in vain by me -oy), that is, when rearranged,  (Latin: The Mother of Loves [= Venus] imitates the figures of Cynthia [= the moon]). In both cases, Johannes Kepler had solved the anagrams incorrectly, assuming they were talking about the Moons of Mars () and a red spot on Jupiter (), respectively. By coincidence, he turned out to be right about the actual objects existing.",0.4,local,identify the correct statement: what is the cause of the observed change in the periods of moons orbiting a distant planet when measured from earth? carefully.,3368211316
+1503,Select the most accurate option: What is the Carnot engine? based on the given context.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is an ideal heat engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real heat engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,B,"A Carnot heat engineIn French, Carnot uses machine à feu, which Thurston translates as heat-engine or steam-engine. In a footnote, Carnot distinguishes the steam-engine (machine à vapeur) from the heat-engine in general. (Carnot, 1824, p. 5 and Carnot, 1890, p. 43) is a theoretical heat engine that operates on the Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded by Benoît Paul Émile Clapeyron in 1834 and mathematically explored by Rudolf Clausius in 1857, work that led to the fundamental thermodynamic concept of entropy. The Carnot engine is the most efficient heat engine which is theoretically possible. The efficiency depends only upon the absolute temperatures of the hot and cold heat reservoirs between which it operates.
+
+where  is the efficiency of the real engine, and  is the efficiency of the Carnot engine working between the same two reservoirs at the temperatures  and . For the Carnot engine, the entire process is 'reversible', and Equation () is an equality. Hence, the efficiency of the real engine is always less than the ideal Carnot engine.
+
+As a macroscopic construct 
+The Carnot heat engine is, ultimately, a theoretical construct based on an idealized thermodynamic system.  On a practical human-scale level the Carnot cycle has proven a valuable model, as in advancing the development of the diesel engine.  However, on a macroscopic scale limitations placed by the model's assumptions prove it impractical, and, ultimately, incapable of doing any work. As such, per Carnot's theorem, the Carnot engine may be thought as the theoretical limit of macroscopic scale heat engines rather than any practical device that could ever be built.",0.4444444444444444,local,select the most accurate option: what is the carnot engine? based on the given context.,988805122
+1504,"Select the most accurate option: What are amorphous ferromagnetic metallic alloys, and what are their advantages? from the following choices.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,This glossary of engineering terms is a list of definitions about the major concepts of engineering. Please see the bottom of the page for glossaries of specific fields of engineering.,0.0,live_api,"select the most accurate option: what are amorphous ferromagnetic metallic alloys, and what are their advantages? from the following choices.",1656677058
+1505,Select the most accurate option: What is the significance of the discovery of the Crab pulsar?,The discovery of the Crab pulsar confirmed the black hole model of pulsars.,The discovery of the Crab pulsar confirmed the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the white dwarf model of pulsars.,The discovery of the Crab pulsar disproved the rotating neutron star model of pulsars.,The discovery of the Crab pulsar confirmed the red giant model of pulsars.,B,"On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+In the early 1990s, a group of astronomers led by Donald Backer, who were studying what they thought was a binary pulsar (PSR B1620−26 b), determined that a third object was needed to explain the observed Doppler shifts. Within a few years, the gravitational effects of the planet on the orbit of the pulsar and white dwarf had been measured, giving an estimate of the mass of the third object that was too small to be a star. The conclusion that the third object was a planet was announced by Stephen Thorsett and his collaborators in 1993.
+
+Clifton accordingly differentiates music from non-music on the basis of the human behavior involved, rather than on either the nature of compositional technique or of sounds as purely physical objects. Consequently, the distinction becomes a question of what is meant by musical behavior: ""a musically behaving person is one whose very being is absorbed in the significance of the sounds being experienced."" However, ""It is not altogether accurate to say that this person is listening to the sounds. First, the person is doing more than listening: he is perceiving, interpreting, judging, and feeling. Second, the preposition 'to' puts too much stress on the sounds as such. Thus, the musically behaving person experiences musical significance by means of, or through, the sounds"".",0.5,local,select the most accurate option: what is the significance of the discovery of the crab pulsar?,2740602980
+1506,Pick the best possible answer: What is the interpretation of supersymmetry in stochastic supersymmetric concept?,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,No match found.,0.0,live_api,pick the best possible answer: what is the interpretation of supersymmetry in stochastic supersymmetric concept?,2332831952
+1507,Pick the best possible answer: What is the reason for the stochastic nature of all observed resistance-switching processes? among the listed options.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,No match found.,0.0,live_api,pick the best possible answer: what is the reason for the stochastic nature of all observed resistance-switching processes? among the listed options.,3076824471
+1508,Choose the correct answer: What is indirect photophoresis? from the following choices.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,choose the correct answer: what is indirect photophoresis? from the following choices.,88462418
+1509,Pick the best possible answer: What is the De Haas-Van Alphen effect? based on the given context.,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.",0.4166666666666667,local,pick the best possible answer: what is the de haas-van alphen effect? based on the given context.,94674444
+1510,Which of the following is correct? What are the Navier-Stokes equations? based on the given context.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.4444444444444444,local,which of the following is correct? what are the navier-stokes equations? based on the given context.,2118263138
+1511,What is organography?,Organography is the study of the stem and root of plants.,Organography is the scientific description of the structure and function of the organs of living things.,"Organography is the study of the development of organs from the ""growing points"" or apical meristems.",Organography is the study of the commonality of development between foliage leaves and floral leaves.,Organography is the study of the relationship between different organs and different functions in plants.,B,"In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole). They are primarily found among dicots and rare among monocots. Stipules are considered part of the anatomy of the leaf of a typical flowering plant, although in many species they may be inconspicuous —or sometimes entirely absent, and the leaf is then termed exstipulate. At the other end of the scale are species like Artocarpus elasticus where the stipules can be up to eight inches (twenty cm) in length. (In some older botanical writing, the term ""stipule"" was used more generally to refer to any small leaves or leaf-parts, notably prophylls.) The word  stipule was coined by Linnaeus from Latin stipula, straw, stalk.",0.0,live_api,what is organography?,1059840089
+1512,"Determine the correct option: Who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"The tragedy of the commons is the concept that, in a system where individuals benefit from the use of a shared resource while the cost of that use is shared by all users, it is rational for individuals to overuse the resource, even though collectively this will likely lead to the depletion of the resource. The concept has been widely discussed and criticized in economics, ecology, and other sciences.
+The metaphorical term is the title of a 1968 essay by ecologist Garrett Hardin. Versions of this concept extend back to classical antiquity, being discussed by Aristotle. The principal concern of Hardin's essay was overpopulation of the planet. To prevent the inevitable tragedy (he argued) it was necessary to reject the principle (supposedly enshrined in the Universal Declaration of Human Rights) according to which every family has a right to choose the number of its offspring, and to replace it by ""mutual coercion, mutually agreed upon"".
+Some scholars have argued that over-exploitation of",0.14285714285714285,live_api,"determine the correct option: who proposed the principle of ""complexity from noise"" and when was it first introduced? among the listed options.",777666453
+1513,Pick the best possible answer: What is the significance of probability amplitudes in quantum mechanics? based on the given context.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Consider a quantum circuit , which consists of  gates, , where each  comes from a universal gate set and acts on at most two qubits.
+To understand what the sum of histories is, we visualize the evolution of a quantum state given a quantum circuit as a tree. The root is the input , and each node in the tree has  children, each representing a state in . The weight on a tree edge from a node in -th level representing a state  to a node in -th level  representing a state  is , the amplitude of  after applying  on . The transition amplitude of a root-to-leaf path is the product of all the weights on the edges along the path. To get the probability of the final state being , we sum up the amplitudes of all root-to-leave paths that ends at a node representing .
+
+Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .",0.5,local,pick the best possible answer: what is the significance of probability amplitudes in quantum mechanics? based on the given context.,3101233250
+1514,Choose the correct answer: What is the information loss paradox in black holes? carefully.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.",0.5555555555555556,local,choose the correct answer: what is the information loss paradox in black holes? carefully.,4122955750
+1515,Determine the correct option: What is reciprocal length or inverse length? based on the given context.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).
+
+where  is the attenuation at a given wavelength ,  is the particle concentration as a number density, and  is the path length. The absorbance of the radiation is the logarithm (decadic or, more usually, natural) of the reciprocal of the transmittance :",0.5,local,determine the correct option: what is reciprocal length or inverse length? based on the given context.,3605470684
+1516,Select the most accurate option: What is the Josephson effect? among the listed options.,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.",0.6666666666666666,local,select the most accurate option: what is the josephson effect? among the listed options.,349149984
+1517,Pick the best possible answer: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level? among the listed options.,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,pick the best possible answer: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level? among the listed options.,4260740496
+1518,Determine the correct option: What is the definition of Atomristor? from the following choices.,Atomristor is a flexible memristive device comprising a MoOx/MoS2 heterostructure sandwiched between silver electrodes on a plastic foil.,Atomristor is a prominent memcapacitive effect observed in switches with memristive behavior.,Atomristor is defined as the electrical devices showing memristive behavior in atomically thin nanomaterials or atomic sheets.,Atomristor is a printing and solution-processing technology used to fabricate memristive devices.,Atomristor is a type of two-dimensional layered transition metal dichalcogenides (TMDs) used in the fabrication of memristive devices.,C,"The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.5714285714285714,local,determine the correct option: what is the definition of atomristor? from the following choices.,2056595578
+1519,Pick the best possible answer: What is the main focus of cryogenic and noble liquid detectors in dark matter experiments? carefully.,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.
+
+WIMP searches mostly use either cryogenic or noble liquid detector technologies. Cryogenic detectors, operating at temperatures below 100 mK, detect the heat produced when a particle hits an atom in a crystal absorber such as germanium. Experiments using this technology include SuperCDMS and EDELWEISS.",0.5,local,pick the best possible answer: what is the main focus of cryogenic and noble liquid detectors in dark matter experiments? carefully.,3145615502
+1520,Pick the best possible answer: What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI? carefully.,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,No match found.,0.0,live_api,pick the best possible answer: what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri? carefully.,3221199262
+1521,Select the most accurate option: What is the spin quantum number? from the following choices.,The spin quantum number is a measure of the distance between an elementary particle and the nucleus of an atom.,The spin quantum number is a measure of the size of an elementary particle.,The spin quantum number is a measure of the charge of an elementary particle.,The spin quantum number is a measure of the speed of an elementary particle's rotation around some axis.,"The spin quantum number is a dimensionless quantity obtained by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum.",E,"In quantum theory, an electronic state of a diatomic molecule is represented by the molecular term symbol
+where  is the total electronic spin quantum number,  is the total electronic angular momentum quantum number along the internuclear axis, and  is the vibrational quantum number.  takes on values 0, 1, 2, ..., which are represented by the electronic state symbols , , , ...
+For example, the following table lists the common electronic states (without vibrational quantum numbers) along with the energy of the lowest vibrational level () of diatomic nitrogen (N2), the most abundant gas in the Earth's atmosphere.
+
+Each electron also has angular momentum in the form of quantum mechanical spin given by spin s = . Its projection along a specified axis is given by the spin magnetic quantum number, ms, which can be + or −. These values are also called ""spin up"" or ""spin down"" respectively.
+
+Whatever axis their spins are measured along, they are always found to be opposite. In quantum mechanics, the x-spin and z-spin are ""incompatible observables"", meaning the Heisenberg uncertainty principle applies to alternating measurements of them: a quantum state cannot possess a definite value for both of these variables. Suppose Alice measures the z-spin and obtains +z, so that the quantum state collapses into state I. Now, instead of measuring the z-spin as well, Bob measures the x-spin. According to quantum mechanics, when the system is in state I, Bob's x-spin measurement will have a 50% probability of producing +x and a 50% probability of -x. It is impossible to predict which outcome will appear until Bob actually performs the measurement. Therefore, Bob's positron will have a definite spin when measured along the same axis as Alice's electron, but when measured in the perpendicular axis its spin will be uniformly random. It seems as if information has propagated (faster than light) from Alice's apparatus to make Bob's positron assume a definite spin in the appropriate axis.",0.5555555555555556,local,select the most accurate option: what is the spin quantum number? from the following choices.,1789797038
+1522,Identify the correct statement: Which of the following statements accurately describes the characteristics of gravitational waves? carefully.,"Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.","Gravitational waves have an amplitude denoted by λ, which represents the distance between points of maximum stretch or squeeze. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by f, which is the frequency of the wave's oscillation.","Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.",C,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Gravitational waves
+Gravitational waves are ripples in the curvature of spacetime that propagate as waves at the speed of light, generated in certain gravitational interactions that propagate outward from their source. Gravitational-wave astronomy is an emerging branch of observational astronomy which aims to use gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs, neutron stars, and black holes; and events such as supernovae, and the formation of the early universe shortly after the Big Bang.
+
+Gravitational-wave interferometry can be used to detect merging black holes and other compact objects. In this method, a laser beam is split down two long arms of a tunnel. The laser beams reflect off of mirrors in the tunnels and converge at the intersection of the arms, cancelling each other out. However, when a gravitational wave passes, it warps spacetime, changing the lengths of the arms themselves. Since each laser beam is now travelling a slightly different distance, they do not cancel out and produce a recognisable signal. Analysis of the signal can give scientists information about what caused the gravitational waves. Since gravitational waves are very weak, gravitational-wave observatories such as LIGO must have arms several kilometres long and carefully control for noise from Earth to be able to detect these gravitational waves. Since the first measurements in 2016, multiple gravitational waves from black holes have been detected and analysed.",0.3333333333333333,local,identify the correct statement: which of the following statements accurately describes the characteristics of gravitational waves? carefully.,27407246
+1523,Select the most accurate option: What is the Penrose process? based on the given context.,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In economics, adaptive expectations is a hypothesized process by which people form their expectations about what will happen in the future based on what has happened in the past.  For example, if people want to create an expectation of the inflation rate in the future, they can refer to past inflation rates to infer some consistencies and could derive a more accurate expectation the more years they consider.",0.6666666666666666,local,select the most accurate option: what is the penrose process? based on the given context.,1371504807
+1524,Determine the correct option: What is the Carnot engine? carefully.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is an ideal heat engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real heat engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,B,"A Carnot heat engineIn French, Carnot uses machine à feu, which Thurston translates as heat-engine or steam-engine. In a footnote, Carnot distinguishes the steam-engine (machine à vapeur) from the heat-engine in general. (Carnot, 1824, p. 5 and Carnot, 1890, p. 43) is a theoretical heat engine that operates on the Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded by Benoît Paul Émile Clapeyron in 1834 and mathematically explored by Rudolf Clausius in 1857, work that led to the fundamental thermodynamic concept of entropy. The Carnot engine is the most efficient heat engine which is theoretically possible. The efficiency depends only upon the absolute temperatures of the hot and cold heat reservoirs between which it operates.
+
+where  is the efficiency of the real engine, and  is the efficiency of the Carnot engine working between the same two reservoirs at the temperatures  and . For the Carnot engine, the entire process is 'reversible', and Equation () is an equality. Hence, the efficiency of the real engine is always less than the ideal Carnot engine.
+
+Carnot cycle 
+The concept of entropy arose from Rudolf Clausius's study of the Carnot cycle which is a thermodynamic cycle performed by a Carnot heat engine as a reversible heat engine. In a Carnot cycle, the heat  is transferred from a hot reservoir to a working gas at the constant temperature  during isothermal expansion stage and the heat  is transferred from a working gas to a cold reservoir at the constant temperature  during isothermal compression stage. According to Carnot's theorem, a heat engine with two thermal reservoirs can produce a work  if and only if there is a temperature difference between reservoirs. Originally, Carnot did not distinguish between heats  and , as he assumed caloric theory to be valid and hence that the total heat in the system was conserved. But in fact, the magnitude of heat  is greater than the magnitude of heat . Through the efforts of Clausius and Kelvin, the work  done by a reversible heat engine was found to be the product of the Carnot efficiency (i.e., the efficiency of all reversible heat engines with the same pair of thermal reservoirs) and the heat  absorbed by a working body of the engine during isothermal expansion:To derive the Carnot efficiency Kelvin had to evaluate the ratio of the work output to the heat absorbed during the isothermal expansion with the help of the Carnot–Clapeyron equation, which contained an unknown function called the Carnot function. The possibility that the Carnot function could be the temperature as measured from a zero point of temperature was suggested by Joule in a letter to Kelvin. This allowed Kelvin to establish his absolute temperature scale.",0.3333333333333333,local,determine the correct option: what is the carnot engine? carefully.,3919688765
+1525,Determine the correct option: What are the two main factors that cause resistance in a metal? among the listed options.,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+Common derivative contract
+Some of the common variants of derivative contracts are as follows:
+ Forwards: tailored contract between two parties, where payment takes place at a specific time in the future at today's pre-determined price.
+ Futures: contracts to buy or sell an asset on a future date at a price specified today. A futures contract differs from a forward contract in that the futures contract is a standardized contract written by a clearing house that operates an exchange where the contract can be bought and sold; the forward contract is a non-standardized contract written by the parties themselves.
+ Options: contracts that give the owner the right, but not the obligation, to buy (in the case of a call option) or sell (in the case of a put option) an asset. The price at which the sale takes place is known as the strike price, and is specified at the time the parties enter into the option. The option contract also specifies a maturity date. In the case of a European option, the owner has the right to require the sale to take place on (but not before) the maturity date; in the case of an American option, the owner can require the sale to take place at any time up to the maturity date. If the owner of the contract exercises this right, the counter-party has the obligation to carry out the transaction. Options are of two types: call option and put option.
+ Binary options: contracts that provide the owner with an all-or-nothing profit profile.
+ Warrants: apart from the commonly used short-dated options which have a maximum maturity period of one year, there exist certain long-dated options as well, known as warrants. These are generally traded over the counter.
+ Swaps: contracts to exchange cash (flows) on or before a specified future date based on the underlying value of currencies exchange rates, bonds/interest rates, commodities exchange, stocks or other assets.
+Swaps can basically be categorized into Interest rate swap and currency swap.
+Some common examples of these derivatives are the following:
+
+The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.46153846153846156,local,determine the correct option: what are the two main factors that cause resistance in a metal? among the listed options.,467331933
+1526,Select the most accurate option: What is the role of the Higgs boson in the Standard Model?,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+Other names connected with the city include physicist Max Born, a principle founder of Quantum mechanics and Nobel laureate; Charles Darwin, the biologist who propounded the theory of natural selection; David Hume, philosopher, economist and historian; James Hutton, regarded as the ""Father of Geology""; Joseph Black, the chemist who discovered magnesium and carbon dioxide, and one of the founders of Thermodynamics; pioneering medical researchers Joseph Lister and James Young Simpson; chemist and discoverer of the element nitrogen Daniel Rutherford; Colin Maclaurin, mathematician and developer of the Maclaurin series, and Ian Wilmut, the geneticist involved in the cloning of Dolly the sheep just outside Edinburgh, at the Roslin Institute. The stuffed carcass of Dolly the sheep is now on display in the National Museum of Scotland. The latest in a long line of science celebrities associated with the city is theoretical physicist, Nobel laureate and professor emeritus at the University of Edinburgh Peter Higgs, born in Newcastle but resident in Edinburgh for most of his academic career, after whom the Higgs boson particle has been named.",0.5555555555555556,local,select the most accurate option: what is the role of the higgs boson in the standard model?,1233989569
+1527,Which of the following is correct? What is a Schwarzschild black hole?,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.
+
+The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole.",0.6666666666666666,local,which of the following is correct? what is a schwarzschild black hole?,4216320102
+1528,What does Earnshaw's theorem state?,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,"Diamagnets may be levitated in stable equilibrium in a magnetic field, with no power consumption. Earnshaw's theorem seems to preclude the possibility of static magnetic levitation. However, Earnshaw's theorem applies only to objects with positive susceptibilities, such as ferromagnets (which have a permanent positive moment) and paramagnets (which induce a positive moment). These are attracted to field maxima, which do not exist in free space. Diamagnets (which induce a negative moment) are attracted to field minima, and there can be a field minimum in free space.
+
+Antimony compounds are often classified according to their oxidation state: Sb(III) and Sb(V). The +5 oxidation state is more common.Greenwood and Earnshaw, p. 553
+
+Stibine can also be produced by treating  salts with hydride reagents such as sodium borohydride. Stibine decomposes spontaneously at room temperature. Because stibine has a positive heat of formation, it is thermodynamically unstable and thus antimony does not react with hydrogen directly.Greenwood and Earnshaw, p. 558",1.0,local,what does earnshaw's theorem state?,1357935256
+1529,Determine the correct option: What are the four qualitative levels of crystallinity described by geologists? carefully.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.0,live_api,determine the correct option: what are the four qualitative levels of crystallinity described by geologists? carefully.,1609975055
+1530,Determine the correct option: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? among the listed options.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,No match found.,0.0,live_api,determine the correct option: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? among the listed options.,726610788
+1531,Pick the best possible answer: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level?,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,pick the best possible answer: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level?,1329436832
+1532,Choose the correct answer: What is magnetic susceptibility? based on the given context.,"Magnetic susceptibility is a measure of how much a material will absorb magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will resist magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will conduct magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will reflect magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.",B,"Diamagnetic materials, like water, or water-based materials, have a relative magnetic permeability that is less than or equal to 1, and therefore a magnetic susceptibility less than or equal to 0, since susceptibility is defined as . This means that diamagnetic materials are repelled by magnetic fields. However, since diamagnetism is such a weak property, its effects are not observable in everyday life. For example, the magnetic susceptibility of diamagnets such as water is . The most strongly diamagnetic material is bismuth, , although pyrolytic carbon may have a susceptibility of  in one plane. Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets. Because χv is derived from the ratio of the internal magnetic field to the applied field, it is a dimensionless value.",0.375,local,choose the correct answer: what is magnetic susceptibility? based on the given context.,2823179719
+1533,"Identify the correct statement: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? among the listed options.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The concept of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause significant variations in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.5,local,"identify the correct statement: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? among the listed options.",2029093577
+1534,Determine the correct option: What is Lorentz symmetry or Lorentz invariance in relativistic physics? carefully.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.3,local,determine the correct option: what is lorentz symmetry or lorentz invariance in relativistic physics? carefully.,4292453601
+1535,Determine the correct option: What is the Kutta condition? from the following choices.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"A pendulum is a mechanical device consisting of a weight suspended from a pivot so that it can swing freely. When a pendulum is displaced sideways from its resting mechanical equilibrium position, it is subject to a restoring force due to gravity, which will accelerate it back toward the equilibrium position. When released, the restoring force acting on the pendulum's mass causes it to oscillate about the equilibrium position, swinging back and forth. The time for one complete cycle, a left swing and a right swing, or frequency, is commonly known as its ""period"". The period depends both on the length of the pendulum and, somewhat, on the amplitude (the width of the pendulum's swing). The SI unit of the period of a pendulum is the second (s).
+The regular motion of a pendulum lends itself to timekeeping.  The pendulum clock was invented by Christiaan Huygens in 1656. It became the world's standard manner of timekeeping, used in homes and offices for 270 years. The Shortt-Synchronome cloc",0.0,live_api,determine the correct option: what is the kutta condition? from the following choices.,2196379077
+1536,What is the role of CYCLOIDEA genes in the evolution of bilateral symmetry?,CYCLOIDEA genes are responsible for the selection of symmetry in the evolution of animals.,"CYCLOIDEA genes are responsible for the evolution of specialized pollinators in plants, which in turn led to the transition of radially symmetrical flowers to bilaterally symmetrical flowers.","CYCLOIDEA genes are responsible for the expression of dorsal petals in Antirrhinum majus, which control their size and shape.","CYCLOIDEA genes are responsible for the expression of transcription factors that control the expression of other genes, allowing their expression to influence developmental pathways relating to symmetry.",CYCLOIDEA genes are responsible for mutations that cause a reversion to radial symmetry.,D,"In many of his writings, Mayr rejected reductionism in evolutionary biology, arguing that evolutionary pressures act on the whole organism, not on single genes, and that genes can have different effects depending on the other genes present. He advocated a study of the whole genome, rather than of only isolated genes. After articulating the biological species concept in 1942, Mayr played a central role in the species problem debate over what was the best species concept. He staunchly defended the biological species concept against the many definitions of ""species"" that others proposed.
+
+An area of current investigation in evolutionary developmental biology is the developmental basis of adaptations and exaptations. This research addresses the origin and evolution of embryonic development and how modifications of development and developmental processes produce novel features.  These studies have shown that evolution can alter development to produce new structures, such as embryonic bone structures that develop into the jaw in other animals instead forming part of the middle ear in mammals. It is also possible for structures that have been lost in evolution to reappear due to changes in developmental genes, such as a mutation in chickens causing embryos to grow teeth similar to those of crocodiles. It is now becoming clear that most alterations in the form of organisms are due to changes in a small set of conserved genes.
+
+Understanding the changes that have occurred during an organism's evolution can reveal the genes needed to construct parts of the body, genes which may be involved in human genetic disorders. For example, the Mexican tetra is an albino cavefish that lost its eyesight during evolution. Breeding together different populations of this blind fish produced some offspring with functional eyes, since different mutations had occurred in the isolated populations that had evolved in different caves. This helped identify genes required for vision and pigmentation.",0.5,local,what is the role of cycloidea genes in the evolution of bilateral symmetry?,3725247859
+1537,Choose the correct answer: What is the butterfly effect? among the listed options.,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the variation between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Differentiating types of butterfly effects 
+The concept of the butterfly effect encompasses several phenomena. The two kinds of butterfly effects, including the sensitive dependence on initial conditions, and the ability of a tiny perturbation to create an organized circulation at large distances, are not exactly the same. In Palmer et al., a new type of butterfly effect is introduced, highlighting the potential impact of small-scale processes on finite predictability within the Lorenz 1969 model. Additionally, the identification of ill-conditioned aspects of the Lorenz 1969 model points to a practical form of finite predictability. These two distinct mechanisms suggesting finite predictability in the Lorenz 1969 model are collectively referred to as the third kind of butterfly effect. The authors in  have considered Palmer et al.'s suggestions and have aimed to present their perspective without raising specific contentions.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.",0.25,local,choose the correct answer: what is the butterfly effect? among the listed options.,4017561878
+1538,Select the most accurate option: What is the Kutta condition? carefully.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"In computational mathematics, a stiff equation is an initial value problem
+
+  
+    
+      
+        
+          
+            
+              u
+              ˙
+            
+          
+        
+        =
+        f
+        (
+        u
+        )
+        
+        ,
+        
+        u
+        (
+        0
+        )
+        =
+        
+          u
+          
+            0
+          
+        
+        
+        ,
+        
+        t
+        ∈
+        [
+        0
+        ,
+        T
+        ]
+        
+        ,
+      
+    
+    {\displaystyle {\dot {u}}=f(u)\,,\qquad u(0)=u_{0}\,,\qquad t\in [0,T]\,,}
+  
+
+where 
+  
+    
+      
+        f
+        :
+        
+          
+            
+              R
+            
+          
+          
+            d
+          
+        
+        →
+        
+          
+            
+              R
+            
+          
+          
+            d
+          
+        
+      
+    
+    {\displaystyle f:{\mathbb {R} }^{d}\rightarrow {\mathbb {R} }^{d}}
+  
+, requiring dedicated implicit",0.0,live_api,select the most accurate option: what is the kutta condition? carefully.,4277037206
+1539,Select the most accurate option: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? based on the given context.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,No match found.,0.0,live_api,select the most accurate option: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? based on the given context.,1780665560
+1540,Determine the correct option: What is the Liouville density? based on the given context.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In the Hamiltonian formalism, given a coordinate it is possible to derive the appropriate (generalized) momentum such that the associated volume is preserved by the flow.  The volume is said to be computed by the Liouville measure.",0.75,local,determine the correct option: what is the liouville density? based on the given context.,1051946809
+1541,Which of the following is correct? What is the interstellar medium (ISM)? among the listed options.,"The matter and radiation that exist in the space between the star mechanisms in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar structure, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.
+
+Since its interstellar discovery,  has proved to be an invaluable spectroscopic tool in the study of the interstellar medium. With a large number of transitions sensitive to a wide range of excitation conditions,  has been widely astronomically detected–its detection has been reported in hundreds of journal articles. Listed below is a sample of journal articles that highlights the range of detectors that have been used to identify ammonia.
+
+Entity ρ (kg/m3) Notes Interstellar medium     Based on 10 hydrogen atoms per cubic centimetre Local Interstellar Cloud    Based on 0.3 hydrogen atoms per cubic centimetre Interstellar medium     Based on 10 hydrogen atoms per cubic centimetre The Earth             5,515  Mean density. Earth's inner core  13,000  Approx., as listed in Earth. The core of the Sun   33,000–160,000  Approx. White dwarf star        Approx. Atomic nuclei           Does not depend strongly on size of nucleus Neutron star",0.4444444444444444,local,which of the following is correct? what is the interstellar medium (ism)? among the listed options.,4073465045
+1542,Identify the correct statement: What was the aim of the Gravity Probe B (GP-B) mission? among the listed options.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"On the American late-night live television sketch comedy and variety show Saturday Night Live (SNL), a commercial advertisement parody is commonly shown after the host's opening monologue. Many of the parodies were produced by James Signorelli.  The industries, products, and ad formats targeted by the parodies have been wide-ranging, including fast food, beer, feminine hygiene products, toys, clothes, medications (both prescription and over-the-counter), financial institutions, automobiles, electronics, appliances, public-service announcements, infomercials, and movie & TV shows (including SNL itself).
+Many of SNL's ad parodies have been featured in prime-time clip shows over the years, including an April 1991 special hosted by Kevin Nealon and Victoria Jackson, as well as an early 1999 follow-up hosted by Will Ferrell that features his attempts to audition for a feminine hygiene commercial.  In late 2005 and in March 2009, the special was modernized, featuring commercials created sinc",0.07692307692307693,live_api,identify the correct statement: what was the aim of the gravity probe b (gp-b) mission? among the listed options.,2834113778
+1543,Pick the best possible answer: Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions? based on the given context.,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+The generators of SU(2) and U(1) are given the name weak isospin (labeled ) and weak hypercharge (labeled ) respectively. These then give rise to the gauge bosons that mediate the electroweak interactions – the three  bosons of weak isospin (, , and ), and the  boson of weak hypercharge, respectively, all of which are ""initially"" massless. These are not physical fields yet, before spontaneous symmetry breaking and the associated Higgs mechanism.
+
+Wigner was awarded the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"". The prize was shared that year, with the other half of the award divided between Maria Goeppert-Mayer and J. Hans D. Jensen. Wigner professed that he had never considered the possibility that this might occur, and added: ""I never expected to get my name in the newspapers without doing something wicked."" He also won the Franklin Medal in 1950, the Enrico Fermi award in 1958, the Atoms for Peace Award in 1959, the Max Planck Medal in 1961, the National Medal of Science in 1969, the Albert Einstein Award in 1972, the Golden Plate Award of the American Academy of Achievement in 1974, the eponymous Wigner Medal in 1978, and the Herzl Prize in 1982. In 1968 he gave the Josiah Willard Gibbs lecture.",0.5,local,pick the best possible answer: who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions? based on the given context.,2497911682
+1544,Pick the best possible answer: What is spatial dispersion? from the following choices.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents memory effects in frameworks, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on time. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have no dependence on wavevector. It represents memory effects in structures, commonly seen in optics and electronics.",Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents spreading effects and is usually significant only at microscopic length scales.,"Spatial dispersion is a phenomenon in the physics of continuous media where material parameters such as permittivity or conductivity have dependence on wavevector. It represents memory effects in structures, commonly seen in optics and electronics.",D,"In statistics, a logistic model (or logit model) is a statistical model that models the log-odds of an event as a linear combination of one or more independent variables. In regression analysis, logistic regression (or logit regression) estimates the parameters of a logistic model (the coefficients in the linear or non linear combinations). In binary logistic regression there is a single binary dependent variable, coded by an indicator variable, where the two values are labeled ""0"" and ""1"", while the independent variables can each be a binary variable (two classes, coded by an indicator variable) or a continuous variable (any real value). The corresponding probability of the value labeled ""1"" can vary between 0 (certainly the value ""0"") and 1 (certainly the value ""1""), hence the labeling; the function that converts log-odds to probability is the logistic function, hence the name. The unit of measurement for the log-odds scale is called a logit, from logistic unit, hence the alternative",0.0,live_api,pick the best possible answer: what is spatial dispersion? from the following choices.,3533308694
+1545,Which of the following is correct? What is the role of the Higgs boson in the Standard Model?,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.625,local,which of the following is correct? what is the role of the higgs boson in the standard model?,2848818520
+1546,Choose the correct answer: What was Pierre de Fermat's solution to the problem of refraction? among the listed options.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.5,local,choose the correct answer: what was pierre de fermat's solution to the problem of refraction? among the listed options.,1112672349
+1547,Select the most accurate option: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,No match found.,0.0,live_api,select the most accurate option: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,583953855
+1548,Which of the following statements accurately describes the origin and significance of the triskeles symbol?,"The triskeles symbol was reconstructed as a feminine divine triad by the rulers of Syracuse, and later adopted as an emblem. Its usage may also be related to the Greek name of Sicily, Trinacria, which means ""having three headlands."" The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol is a representation of three interlinked spirals, which was adopted as an emblem by the rulers of Syracuse. Its usage in modern flags of Sicily has its origins in the ancient Greek name for the island, Trinacria, which means ""Sicily with three corners."" The head of Medusa at the center is a representation of the island's rich cultural heritage.","The triskeles symbol is a representation of a triple goddess, reconstructed by the rulers of Syracuse, who adopted it as an emblem. Its significance lies in the fact that it represents the Greek name for Sicily, Trinacria, which contains the element ""tria,"" meaning three. The head of Medusa at the center of the Sicilian triskeles represents the three headlands.","The triskeles symbol represents three interlocked spiral arms, which became an emblem for the rulers of Syracuse. Its usage in modern flags of Sicily is due to the island's rich cultural heritage, which dates back to ancient times. The head of Medusa at the center represents the lasting influence of Greek mythology on Sicilian culture.","The triskeles symbol is a representation of the Greek goddess Hecate, reconstructed by the rulers of Syracuse. Its adoption as an emblem was due to its cultural significance, as it represented the ancient Greek name for Sicily, Trinacria. The head of Medusa at the center of the Sicilian triskeles represents the island's central location in the Mediterranean.",A,"Ammianus' work contains a detailed description of the earthquake and tsunami of 365 in Alexandria, which devastated the metropolis and the shores of the eastern Mediterranean on 21 July 365. His report describes accurately the characteristic sequence of earthquake, retreat of the sea, and sudden incoming giant wave.
+
+Only fragments of Priscus' work remain. It was cited extensively by 6th-century historians Procopius and Jordanes, especially in Jordanes' The Origin and Deeds of the Goths, which contains numerous references to Priscus's history, and it is also an important source of information about the Hunnic empire and its neighbors. He describes the legacy of Attila and the Hunnic people for a century after Attila's death. Marcellinus Comes, a chancellor of Justinian during the same era, also describes the relations between the Huns and the Eastern Roman Empire.
+
+The name of the Nandināgarī script is also formed by adding a prefix to the generic script name . The precise origin and significance of the prefix - (""heavenly"" or ""god"") remains unclear.",0.5555555555555556,local,which of the following statements accurately describes the origin and significance of the triskeles symbol?,1788127613
+1549,Identify the correct statement: What is a virtual particle?,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"The triplet deuteron nucleon is barely bound at , and none of the higher energy states are bound. The singlet deuteron is a virtual state, with a negative binding energy of . There is no such stable particle, but this virtual particle transiently exists during neutron–proton inelastic scattering, accounting for the unusually large neutron scattering cross-section of the proton.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+More sophisticated versions of the systems reply try to identify more precisely what ""the system"" is and they differ in exactly how they describe it. According to these replies, the ""mind that speaks Chinese"" could be such things as: the ""software"", a ""program"", a ""running program"", a simulation of the ""neural correlates of consciousness"", the ""functional system"", a ""simulated mind"", an ""emergent property"", or ""a virtual mind"".",1.0,local,identify the correct statement: what is a virtual particle?,2572146414
+1550,Choose the correct answer: What is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or Copernican principles that can be used to address specific issues in the Lambda-CDM model and distinguish between current models and other possible models? carefully.,"The Copernican principle, which proposes that Earth, the Solar mechanism, and the Milky Way are not at the centre of the universe, but instead, the universe is expanding equally in all directions. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","Inhomogeneous cosmology, which states that the universe is entirely homogeneous and isotropic, directly proportional to the density of matter and radiation. This model proposes that everything in the universe is completely uniform, but it does not match observations.","Inhomogeneous cosmology, which models the universe as an extremely large, low-density void, instead of using the concept of dark energy. According to the model, this framework can match the observed accelerating universe and cosmological constant, but it contradicts the Copernican principle.","The cosmological principle, which proposes that Earth, the Solar mechanism, and the Milky Way are at the centre of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","The principle of dark energy, which proposes that a new form of energy, not previously detected, is responsible for the acceleration of the expansion of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.",C,"Physics without the principle
+The standard model of cosmology, the Lambda-CDM model, assumes the Copernican principle and the more general cosmological principle. Some cosmologists and theoretical physicists have created models without the cosmological or Copernican principles to constrain the values of observational results, to address specific known issues in the Lambda-CDM model, and to propose tests to distinguish between current models and other possible models.",0.6451612903225806,local,choose the correct answer: what is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or copernican principles that can be used to address specific issues in the lambda-cdm model and distinguish between current models and other possible models? carefully.,3663873736
+1551,Select the most accurate option: What is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? among the listed options.,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,No match found.,0.0,live_api,select the most accurate option: what is the contrast between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza? among the listed options.,3516209778
+1552,Determine the correct option: Who was the first to determine the velocity of a star moving away from the Earth using the Doppler effect? among the listed options.,Fraunhofer,William Huggins,Hippolyte Fizeau,Vogel and Scheiner,None of the above,B,"The Doppler effect is used in some types of radar to measure the velocity of detected objects. A radar beam is fired at a moving target – e.g. a motor car, as police use radar to detect speeding motorists – as it approaches to or recedes from the radar source. In the case of a car moving away from the source, each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gaps between the wave crests increase, increasing the wavelength of the radiation returning to the radar. In the opposite case, when the radar beam is fired at the moving car as it approaches, each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's speed. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to detonate explosives at the correct time, height, distance, etc.
+
+The Doppler effect (also Doppler shift) is the change in the frequency or, equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle approaches and recedes from an observer. Compared to the emitted sound, the received sound has a higher pitch during the approach, identical at the instant of passing by, and lower pitch during the recession.
+
+The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.",0.4375,local,determine the correct option: who was the first to determine the velocity of a star moving away from the earth using the doppler effect? among the listed options.,999117009
+1553,Identify the correct statement: What is the Ozma Problem? among the listed options.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.375,local,identify the correct statement: what is the ozma problem? among the listed options.,1353297821
+1554,Select the most accurate option: What is the relationship between chemical potential and quarks/antiquarks? among the listed options.,"Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a structure. Higher μ indicates a stronger bias favoring quarks over antiquarks.","Chemical potential, represented by μ, is a measure of the balance between quarks and antiquarks in a mechanism. Higher μ indicates an equal number of quarks and antiquarks.","Chemical potential, represented by μ, is a measure of the imbalance between quarks and antiquarks in a mechanism. Higher μ indicates a stronger bias favoring antiquarks over quarks.","Chemical potential, represented by μ, is a measure of the density of antiquarks in a mechanism. Higher μ indicates a higher density of antiquarks.","Chemical potential, represented by μ, is a measure of the density of quarks in a mechanism. Higher μ indicates a higher density of quarks.",A,"The universe comprises all of existence: all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments. Since the early 20th century, the field of cosmology has established that the universe has been expanding for 13.8 billion years, starting from a dense fireball in an event called the Big Bang. The observable portion of the universe is approximately 93 billion light-years in diameter at present. The total size of the universe is not known.
+Some of the earliest cosmological models of the universe were geocentric, placing Earth at the center. During the Scientific Revolution, astronomical observations led to a heliocentric model. Further observational improvements led to the realization that the Sun is one of a few hundred billion stars in the Milky Way, which is one of a few hundred billion galaxies in the observable universe. At the largest scale, galaxies are distributed uniformly and the same in all directions. At smaller scale",0.0,live_api,select the most accurate option: what is the relationship between chemical potential and quarks/antiquarks? among the listed options.,3228770994
+1555,Pick the best possible answer: What is the American Petroleum Institute (API) gravity?,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,No match found.,0.0,live_api,pick the best possible answer: what is the american petroleum institute (api) gravity?,4163324689
+1556,Pick the best possible answer: What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? carefully.,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.4,local,pick the best possible answer: what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? carefully.,3955299652
+1557,Pick the best possible answer: What is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? among the listed options.,One,Five,Three,Two,Four,A,"All of the mass-energy in all of the galaxies currently visible started in a sphere with a radius around 4 x 10-29 m then grew to a sphere with a radius around 0.9 m by the end of inflation. Reheating followed as the inflaton field decayed, until the universe obtained the temperatures required for the production of a quark–gluon plasma as well as all other elementary particles. Temperatures were so high that the random motions of particles were at relativistic speeds, and particle–antiparticle pairs of all kinds were being continuously created and destroyed in collisions. At some point, an unknown reaction called baryogenesis violated the conservation of baryon number, leading to a very small excess of quarks and leptons over antiquarks and antileptonsof the order of one part in 30 million. This resulted in the predominance of matter over antimatter in the present universe.",0.38095238095238093,local,pick the best possible answer: what is the required excess quark per billion quark-antiquark pairs in the early universe in order to provide all the observed matter in the universe? among the listed options.,1647249131
+1558,Pick the best possible answer: What is spontaneous symmetry breaking? from the following choices.,"Spontaneous symmetry breaking occurs when the action of a framework has no symmetry, but the vacuum state has a symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a framework has a symmetry, and the vacuum state also has the same symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has no symmetry, and the vacuum state also has no symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a framework has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.",E,"The above spontaneous symmetry breaking makes the  and  bosons coalesce into two different physical bosons with different masses – the  boson, and the photon (),
+
+In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.",0.3333333333333333,local,pick the best possible answer: what is spontaneous symmetry breaking? from the following choices.,1903860490
+1559,Identify the correct statement: What is a regular polytope?,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.
+
+The cube is a Hanner polytope, because it can be constructed by using the Cartesian product of three line segments. Its dual polyhedron, the regular octahedron, is constructed by the direct sum of three line segments.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.8,local,identify the correct statement: what is a regular polytope?,3240438532
+1560,Select the most accurate option: What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth? from the following choices.,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,select the most accurate option: what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth? from the following choices.,681721604
+1561,Choose the correct answer: What is the role of methane in Fischer-Tropsch processes? among the listed options.,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,No match found.,0.0,live_api,choose the correct answer: what is the role of methane in fischer-tropsch processes? among the listed options.,2705321275
+1562,Choose the correct answer: What is the significance of the redshift-distance relationship in determining the expansion history of the universe? based on the given context.,"Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for nearby galaxies whose light has been travelling to us for much longer times.","Observations of the redshift-distance relationship can be used to determine the age of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much shorter times.","Observations of the redshift-distance relationship can be used to determine the expansion history of the universe and the matter and energy content, especially for distant galaxies whose light has been travelling to us for much longer times.",E,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models based on the Big Bang concept explain a broad range of phenomena,  including the abundance of light elements, the cosmic microwave background (CMB) radiation, the redshift of galaxies and the large-scale structure of the Universe. The uniformity of the universe, known as the horizon and flatness problems, is explained through cosmic inflation: a phase of accelerated expansion during the earliest stages. Detailed measurements of the expansion rate of the universe place the initial singularity at an estimated  billion years ago, which is considered the age of the universe. A wide range of empirical evidence strongly favors the Big Bang event, which is now widely accepted.: ""At the same time that observations tipped the balance definitely in favor of the relativistic big-bang theory, ...""
+
+Measurements of the redshift–magnitude relation for type Ia supernovae indicate that the expansion of the universe has been accelerating since the universe was about half its present age. To explain this acceleration, cosmological models require that much of the energy in the universe consists of a component with large negative pressure, dubbed ""dark energy"".",0.35714285714285715,local,choose the correct answer: what is the significance of the redshift-distance relationship in determining the expansion history of the universe? based on the given context.,4288693242
+1563,Select the most accurate option: What are the four qualitative levels of crystallinity described by geologists? among the listed options.,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,The following scientific events occurred in 2022.,0.0,live_api,select the most accurate option: what are the four qualitative levels of crystallinity described by geologists? among the listed options.,2818889896
+1564,Determine the correct option: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? carefully.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's framework of general relativity.",C,No match found.,0.0,live_api,determine the correct option: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? carefully.,2465374726
+1565,Identify the correct statement: How many crystallographic point groups are there in three-dimensional space?,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.
+
+In a manner analogous to the way lines in a two-dimensional space are described using a point-slope form for their equations, planes in a three dimensional space have a natural description using a point in the plane and a vector orthogonal to it (the normal vector) to indicate its ""inclination"".",0.36363636363636365,local,identify the correct statement: how many crystallographic point groups are there in three-dimensional space?,4228193450
+1566,Pick the best possible answer: What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation? among the listed options.,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,No match found.,0.0,live_api,pick the best possible answer: what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation? among the listed options.,2440914957
+1567,Select the most accurate option: What is the reason for recycling rare metals according to the United Nations? from the following choices.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will reduce in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Deep sea mining is the extraction of minerals from the seabed of the deep sea. The main ores of commercial interest are polymetallic nodules, which are found at depths of 4–6 km (2.5–3.7 mi) primarily on the abyssal plain. The Clarion–Clipperton zone (CCZ) alone contains over 21 billion metric tons of these nodules, with minerals such as copper, nickel, cobalt and manganese making up roughly 30% of their weight. It is estimated that the global ocean floor holds more than 120 million tons of cobalt, five times the amount found in terrestrial reserves.
+Studies have shown that midwater mining techniques causing plumes can trigger bottom-up ecosystems impacts with severe consequences to marine life, extending beyond the initial mining area.
+As of July 2024, only exploratory licenses have been issued, with no commercial-scale deep sea mining operations yet. The International Seabed Authority (ISA) regulates all mineral-related activities in international waters and has granted 31 exploratio",0.0,live_api,select the most accurate option: what is the reason for recycling rare metals according to the united nations? from the following choices.,1350440109
+1568,Identify the correct statement: What is magnetic susceptibility? carefully.,"Magnetic susceptibility is a measure of how much a material will absorb magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will resist magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will conduct magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will reflect magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.",B,"In rare cases, the diamagnetic contribution can be stronger than paramagnetic contribution. This is the case for gold, which has a magnetic susceptibility less than 0 (and is thus by definition a diamagnetic material), but when measured carefully with X-ray magnetic circular dichroism, has an extremely weak paramagnetic contribution that is overcome by a stronger diamagnetic contribution.
+
+Diamagnetic materials, like water, or water-based materials, have a relative magnetic permeability that is less than or equal to 1, and therefore a magnetic susceptibility less than or equal to 0, since susceptibility is defined as . This means that diamagnetic materials are repelled by magnetic fields. However, since diamagnetism is such a weak property, its effects are not observable in everyday life. For example, the magnetic susceptibility of diamagnets such as water is . The most strongly diamagnetic material is bismuth, , although pyrolytic carbon may have a susceptibility of  in one plane. Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets. Because χv is derived from the ratio of the internal magnetic field to the applied field, it is a dimensionless value.",0.5,local,identify the correct statement: what is magnetic susceptibility? carefully.,2064689408
+1569,Select the most accurate option: What is organography?,Organography is the study of the stem and root of plants.,Organography is the scientific description of the structure and function of the organs of living things.,"Organography is the study of the development of organs from the ""growing points"" or apical meristems.",Organography is the study of the commonality of development between foliage leaves and floral leaves.,Organography is the study of the relationship between different organs and different functions in plants.,B,"The system came with two Intellivision-style controllers with a 12-button keypad and ""fire"" buttons on the sides. The direction pads have a removable joystick attachment. Most games came with BoPET overlays that can be applied to the controller's keypads. The console itself has five buttons: Power, Start, Reset, Option, and Select.
+
+The Condorcet rule is used (sometimes) in decision-making. The voters or elected representatives cast their preferences on one, some, or all options, 1,2,3,4... as in PR-STV or QBS. In the analysis, option A is compared to option B, and if A is more popular than B, then A wins this pairing. Next, A is compared with option C, then D, and so on. Likewise, B is compared with C, D, etc. The option which wins the most pairings, (if there is one), is the Condorcet winner.→
+
+In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.",0.8,local,select the most accurate option: what is organography?,3073288184
+1570,Which of the following is correct? What is the definition of dimension in mathematics? from the following choices.,"The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of degrees of freedom of a point that moves on this object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.",C,"Topological spaces
+For any normal topological space , the Lebesgue covering dimension of  is defined to be the smallest integer n for which the following holds: any open cover has an open refinement (a second open cover in which each element is a subset of an element in the first cover) such that no point is included in more than  elements. In this case dim . For  a manifold, this coincides with the dimension mentioned above. If no such integer  exists, then the dimension of  is said to be infinite, and one writes dim . Moreover,  has dimension −1, i.e. dim  if and only if  is empty. This definition of covering dimension can be extended from the class of normal spaces to all Tychonoff spaces merely by replacing the term ""open"" in the definition by the term ""functionally open"".
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.7142857142857143,local,which of the following is correct? what is the definition of dimension in mathematics? from the following choices.,662047337
+1571,"Choose the correct answer: What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope? based on the given context.","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.",0.3888888888888889,local,"choose the correct answer: what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope? based on the given context.",1863177038
+1572,Identify the correct statement: What is the definition of anatomy? among the listed options.,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"Substitution is replacing the terms in an expression to create a new expression. Substituting 3 for  in the expression  makes a new expression  with meaning . Substituting the terms of a statement makes a new statement. When the original statement is true independently of the values of the terms, the statement created by substitutions is also true. Hence, definitions can be made in symbolic terms and interpreted through substitution: if  is meant as the definition of  as the product of  with itself, substituting  for  informs the reader of this statement that  means . Often it's not known whether the statement is true independently of the values of the terms. And, substitution allows one to derive restrictions on the possible values, or show what conditions the statement holds under. For example, taking the statement , if  is substituted with , this implies , which is false, which implies that if  then  cannot be .
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.625,local,identify the correct statement: what is the definition of anatomy? among the listed options.,699099031
+1573,"Identify the correct statement: Who proposed the concept of ""maximal acceleration""? based on the given context.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Axiom of Choice entry in the Springer Encyclopedia of Mathematics. 
+Axiom of Choice and Its Equivalents entry at ProvenMath. Includes formal statement of the Axiom of Choice, Hausdorff's Maximal Principle, Zorn's Lemma and formal proofs of their equivalence down to the finest detail.
+Consequences of the Axiom of Choice , based on the book by Paul Howard  and Jean Rubin.
+.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+For a given speed , the magnitude of this geometrically caused acceleration (centripetal acceleration) is inversely proportional to the radius  of the circle, and increases as the square of this speed: 
+ For a given angular velocity , the centripetal acceleration is directly proportional to radius . This is due to the dependence of velocity  on the radius . 
+Expressing centripetal acceleration vector in polar components, where  is a vector from the centre of the circle to the particle with magnitude equal to this distance, and considering the orientation of the acceleration towards the center, yields
+As usual in rotations, the speed  of a particle may be expressed as an angular speed with respect to a point at the distance  as
+Thus",0.6,local,"identify the correct statement: who proposed the concept of ""maximal acceleration""? based on the given context.",66032605
+1574,Pick the best possible answer: What is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,The logarithmic scale was adopted to ensure that five magnitude steps corresponded precisely to a factor of 100 in brightness.,The logarithmic scale was adopted to measure the size of stars.,The logarithmic scale was adopted to measure the intensity of light coming from a star.,The logarithmic scale was adopted to ensure that the apparent sizes of stars were not spurious.,The logarithmic scale was adopted to measure the distance between stars.,A,No match found.,0.0,live_api,pick the best possible answer: what is the reason behind the adoption of a logarithmic scale of 5√100 ≈ 2.512 between magnitudes in astronomy? among the listed options.,1375719219
+1575,Select the most accurate option: What are permutation-inversion groups? based on the given context.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.,0.0,live_api,select the most accurate option: what are permutation-inversion groups? based on the given context.,2371384115
+1576,Pick the best possible answer: What is the propagation constant in sinusoidal waves?,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"In the absence of obstacles, the Huygens's principle alone predicts wavefront propagation. When some of the secondary waves are blocked by an obstacle, the remainder will create both wavefront propagation in the unblocked direction and waves behind the obstacle which form the diffraction pattern.
+
+Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+The central stage in the acoustical process is wave propagation. This falls within the domain of physical acoustics. In fluids, sound propagates primarily as a pressure wave. In solids, mechanical waves can take many forms including longitudinal waves, transverse waves and surface waves.",0.375,local,pick the best possible answer: what is the propagation constant in sinusoidal waves?,841628966
+1577,Select the most accurate option: What is the origin of the permanent moment in paramagnetism? among the listed options.,The permanent moment is generally due to the spin of unpaired electrons in atomic or molecular electron orbitals.,The permanent moment is due to the alignment of dipoles perpendicular to the applied field.,"The permanent moment is due to the torque provided on the magnetic moments by an applied field, which tries to align the dipoles perpendicular to the applied field.",The permanent moment is due to the quantum-mechanical properties of spin and angular momentum.,The permanent moment is due to the interaction of dipoles with one another and are randomly oriented in the absence of an external field due to thermal agitation.,A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+Common derivative contract
+Some of the common variants of derivative contracts are as follows:
+ Forwards: tailored contract between two parties, where payment takes place at a specific time in the future at today's pre-determined price.
+ Futures: contracts to buy or sell an asset on a future date at a price specified today. A futures contract differs from a forward contract in that the futures contract is a standardized contract written by a clearing house that operates an exchange where the contract can be bought and sold; the forward contract is a non-standardized contract written by the parties themselves.
+ Options: contracts that give the owner the right, but not the obligation, to buy (in the case of a call option) or sell (in the case of a put option) an asset. The price at which the sale takes place is known as the strike price, and is specified at the time the parties enter into the option. The option contract also specifies a maturity date. In the case of a European option, the owner has the right to require the sale to take place on (but not before) the maturity date; in the case of an American option, the owner can require the sale to take place at any time up to the maturity date. If the owner of the contract exercises this right, the counter-party has the obligation to carry out the transaction. Options are of two types: call option and put option.
+ Binary options: contracts that provide the owner with an all-or-nothing profit profile.
+ Warrants: apart from the commonly used short-dated options which have a maximum maturity period of one year, there exist certain long-dated options as well, known as warrants. These are generally traded over the counter.
+ Swaps: contracts to exchange cash (flows) on or before a specified future date based on the underlying value of currencies exchange rates, bonds/interest rates, commodities exchange, stocks or other assets.
+Swaps can basically be categorized into Interest rate swap and currency swap.
+Some common examples of these derivatives are the following:",0.2727272727272727,local,select the most accurate option: what is the origin of the permanent moment in paramagnetism? among the listed options.,719095910
+1578,Pick the best possible answer: What is the butterfly effect? based on the given context.,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the variation between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.4444444444444444,local,pick the best possible answer: what is the butterfly effect? based on the given context.,4039407529
+1579,"Which of the following is correct? What are amorphous ferromagnetic metallic alloys, and what are their advantages?","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,"An alloy is a mixture of chemical elements of which in most cases at least one is a metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have properties that differ from those of the pure elements from which they are made. The vast majority of metals used for commercial purposes are alloyed to improve their properties or behavior, such as increased strength, hardness or corrosion resistance. Metals may also be alloyed to reduce their overall cost, for instance alloys of gold and copper.
+
+Superconductivity 
+Regarding their applications, amorphous metallic layers played an important role in the discovery of superconductivity in amorphous metals made by Buckel and Hilsch. The superconductivity of amorphous metals, including amorphous metallic thin films, is now understood to be due to phonon-mediated Cooper pairing. The role of structural disorder can be rationalized based on the strong-coupling Eliashberg theory of superconductivity.",0.5555555555555556,local,"which of the following is correct? what are amorphous ferromagnetic metallic alloys, and what are their advantages?",42490240
+1580,Identify the correct statement: What is the main focus of the Environmental Science Center at Qatar University? based on the given context.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Cloning Fact Sheet  from Human Genome Project Information website.
+ 'Cloning' Freeview video by the Vega Science Trust and the BBC/OU
+ Cloning in Focus, an accessible and comprehensive look at cloning research from the University of Utah's Genetic Science Learning Center
+ Click and Clone. Try it yourself in the virtual mouse cloning laboratory, from the University of Utah's Genetic Science Learning Center
+ ""Cloning Addendum: A statement on the cloning report issues by the President's Council on Bioethics"" . National Review, 15 July 2002 8:45 am",0.38461538461538464,local,identify the correct statement: what is the main focus of the environmental science center at qatar university? based on the given context.,1317173175
+1581,"Determine the correct option: What is a transient condensation cloud, also known as a Wilson cloud? from the following choices.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Around the beginning of the twentieth century, it was found that under certain conditions a fast-moving charged particle caused a condensation of supersaturated water vapor along its path. In 1911, Charles Wilson used this principle to devise his cloud chamber so he could photograph the tracks of charged particles, such as fast-moving electrons.",0.2727272727272727,local,"determine the correct option: what is a transient condensation cloud, also known as a wilson cloud? from the following choices.",661451079
+1582,What are permutation-inversion groups?,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,"A breakthrough in the best known theoretical algorithm for the graph isomorphism problem in 1982
+The Schreier conjecture
+The Signalizer functor theorem
+The B conjecture
+The Schur–Zassenhaus theorem for all groups (though this only uses the Feit–Thompson theorem).
+A transitive permutation group on a finite set with more than 1 element has a fixed-point-free element of prime power order.
+The classification of 2-transitive permutation groups.
+The classification of rank 3 permutation groups.
+The Sims conjecture
+Frobenius's conjecture on the number of solutions of .
+ Non-abelian finite simple groups are characterized by their commuting graphs.
+
+Just as order relations are grounded in ordered sets, sets closed under pairwise supremum and infimum, equivalence relations are grounded in partitioned sets, which are sets closed under bijections that preserve partition structure. Since all such bijections map an equivalence class onto itself, such bijections are also known as permutations. Hence permutation groups (also known as transformation groups) and the related notion of orbit shed light on the mathematical structure of equivalence relations.
+
+One way of describing the self-duality of a polyhedron is through a permutation of the set of vertices and faces that maps every vertex to a face and every face to a vertex, preserving vertex-face incidences. The inverse of a self-duality permutation is another such permutation, and it is natural to expect a self-duality permutation to be an involution (a self-inverse permutation), but there exist self-dual convex polyhedra for which all self-duality permutations are not involutions. An example published by Stanislav Jendroľ in 1989 has 14 vertices and 14 faces.",0.6666666666666666,local,what are permutation-inversion groups?,1469124833
+1583,Pick the best possible answer: What is water hammer? based on the given context.,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing frameworks.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to boost the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"Thor (from Old Norse: Þórr) is a prominent god in Germanic paganism. In Norse mythology, he is a hammer-wielding god associated with thunder, storms, strength, protection, fertility, and farmers. Besides Old Norse Þórr, the deity occurs in Old English as Thunor, in Old Frisian as Thuner, in Old Saxon as Thunar, and in Old High German as Donar, all ultimately stemming from the Proto-Germanic theonym *Þun(a)raz, meaning 'Thunder'.
+Thor is a prominently mentioned god throughout the recorded history of the Germanic peoples, from the Roman occupation of regions of Germania, to the Germanic expansions of the Migration Period, to his high popularity during the Viking Age, when, in the face of the process of the Christianization of Scandinavia, emblems of his hammer, Mjölnir, were worn and Norse pagan personal names containing the name of the god bear witness to his popularity.
+Narratives featuring Thor are most prominently attested in Old Norse, where Thor appears throughout Norse mythology.",0.1111111111111111,live_api,pick the best possible answer: what is water hammer? based on the given context.,2345016818
+1584,Determine the correct option: What is Martin Heidegger's view on the relationship between time and human existence?,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Martin Heidegger is the best known of Husserl's students, the one whom Husserl chose as his successor at Freiburg. Heidegger's magnum opus Being and Time was dedicated to Husserl. They shared their thoughts and worked alongside each other for over a decade at the University of Freiburg, Heidegger being Husserl's assistant during 1920–1923.Kockelmans, ""Introduction [Martin Heidegger]"" 267–276, 273, in Kockelmans, editor, Phenomenology (1967). Heidegger's early work followed his teacher, but with time he began to develop new insights distinctively variant. Husserl became increasingly critical of Heidegger's work, especially in 1929, and included pointed criticism of Heidegger in lectures he gave during 1931.See above subsection ""Heidegger and the Nazi era"". Heidegger, while acknowledging his debt to Husserl, followed a political position offensive and harmful to Husserl after the Nazis came to power in 1933, Husserl being of Jewish origin and Heidegger infamously being then a Nazi proponent.The multivalent, including the ""horrifying"", aspects of Heidegger in a parallel context are recounted in Peter Eli Gordon, Rosensweig and Heidegger: Between Judaism and German Philosophy (University of California 2003) at 13–14 (Heidegger and Rosensweig's early ""kinship"" with him). ""In 1929, however, one could still read Heidegger's philosophy without being drawn into a controversy concerning its relationship to National Socialism, antisemitism, and the like. The German philosophical world as a whole still cloaked itself in a mantle of relative innocence."" Gordon (2003) at 303–304. ""Rosensweig's work represents the culmination of what is often called the German Jewish Tradition."" Gordon, ""Preface"" (2003) at xix. Academic discussion of Husserl and Heidegger is extensive.
+
+Ayer was a strong critic of the German philosopher Martin Heidegger. As a logical positivist, Ayer was in conflict with Heidegger's vast, overarching theories of existence. Ayer considered them completely unverifiable through empirical demonstration and logical analysis, and this sort of philosophy an unfortunate strain in modern thought. He considered Heidegger the worst example of such philosophy, which Ayer believed entirely useless. In Philosophy in the Twentieth Century, Ayer accuses Heidegger of ""surprising ignorance"" or ""unscrupulous distortion"" and ""what can fairly be described as charlatanism"".
+
+Sartre argued that a central proposition of existentialism is that existence precedes essence, which is to say that individuals shape themselves by existing and cannot be perceived through preconceived and a priori categories, an ""essence"". The actual life of the individual is what constitutes what could be called their ""true essence"" instead of an arbitrarily attributed essence others use to define them. Human beings, through their own consciousness, create their own values and determine a meaning to their life.(Dictionary) ""L'existencialisme"" – see ""l'identité de la personne"" . This view is in contradiction to Aristotle and Aquinas, who taught that essence precedes individual existence. Although it was Sartre who explicitly coined the phrase, similar notions can be found in the thought of existentialist philosophers such as Heidegger, and Kierkegaard:",0.8333333333333334,local,determine the correct option: what is martin heidegger's view on the relationship between time and human existence?,164224692
+1585,Choose the correct answer: Who was the first person to describe the pulmonary circulation structure?,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.",0.6,local,choose the correct answer: who was the first person to describe the pulmonary circulation structure?,1080565086
+1586,Determine the correct option: What is an order parameter?,An order parameter is a measure of the temperature of a physical mechanism.,An order parameter is a measure of the gravitational force in a physical structure.,An order parameter is a measure of the magnetic field strength in a physical mechanism.,An order parameter is a measure of the degree of symmetry breaking in a physical mechanism.,An order parameter is a measure of the rotational symmetry in a physical structure.,D,"Where  is the first order virial parameter and it depends on the temperature,  is the second order virial parameter of Morse oscillator and it depends on the  parameters of Morse oscillator in addition to the absolute temperature.  is the fractional volume of the system.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+The TRUNCATE function rounds the given number to an integer towards zero. However, it also returns a remainder as a secondary value, making it very easy to determine what value was truncated. It also supports an optional divisor parameter, which can be used to perform Euclidean division trivially:
+(let ((x 1266778)
+      (y 458))
+  (multiple-value-bind (quotient remainder)
+      (truncate x y)
+    (format nil ""~A divided by ~A is ~A remainder ~A"" x y quotient remainder)))",0.8,local,determine the correct option: what is an order parameter?,879518562
+1587,Which of the following is correct? What is the definition of an improper rotation?,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+Isaac Newton's rotating bucket argument (also known as Newton's bucket) is a thought experiment that was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.  It is one of five arguments from the ""properties, causes, and effects"" of ""true motion and rest"" that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by ""absolute rotation"", and do not pretend to address the question of ""rotation relative to what?"" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime.
+
+where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:",0.6666666666666666,local,which of the following is correct? what is the definition of an improper rotation?,2370471797
+1588,Determine the correct option: What is the isophotal diameter used for in measuring a galaxy's size? from the following choices.,The isophotal diameter is a way of measuring a galaxy's distance from Earth.,The isophotal diameter is a measure of a galaxy's age.,The isophotal diameter is a measure of a galaxy's mass.,The isophotal diameter is a measure of a galaxy's temperature.,The isophotal diameter is a conventional way of measuring a galaxy's size based on its apparent surface brightness.,E,"Astrometric measurements are used by astrophysicists to constrain certain models in celestial mechanics. By measuring the velocities of pulsars, it is possible to put a limit on the asymmetry of supernova explosions. Also, astrometric results are used to determine the distribution of dark matter in the galaxy.
+
+In the 2nd century CE, Ptolemy estimated the mean distance of the Sun as  times Earth's radius. To determine this value, Ptolemy started by measuring the Moon's parallax, finding what amounted to a horizontal lunar parallax of 1° 26′, which was much too large. He then derived a maximum lunar distance of  Earth radii. Because of cancelling errors in his parallax figure, his theory of the Moon's orbit, and other factors, this figure was approximately correct.van Helden 1985, pp. 16–19.Ptolemy's Almagest, translated and annotated by G. J. Toomer, London: Duckworth, 1984, p. 251. . He then measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon at the Moon's greatest distance, and from records of lunar eclipses, he estimated this apparent diameter, as well as the apparent diameter of the shadow cone of Earth traversed by the Moon during a lunar eclipse. Given these data, the distance of the Sun from Earth can be trigonometrically computed to be  Earth radii. This gives a ratio of solar to lunar distance of approximately 19, matching Aristarchus's figure. Although Ptolemy's procedure is theoretically workable, it is very sensitive to small changes in the data, so much so that changing a measurement by a few per cent can make the solar distance infinite.
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:",0.6666666666666666,local,determine the correct option: what is the isophotal diameter used for in measuring a galaxy's size? from the following choices.,3746042180
+1589,Pick the best possible answer: What is the mechanism of FTIR? based on the given context.,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"A special type of integrator, used at a point where only moderate accuracy was needed, was based on a steel ball, instead of a disc. It had two inputs, one to rotate the ball, and the other to define the angle of the ball's rotating axis. That axis was always in a plane that contained the axes of two movement pick-off rollers, quite similar to the mechanism of a rolling-ball computer mouse (in that mechanism, the pick-off rollers were roughly the same diameter as the ball). The pick-off roller axes were at right angles.
+
+It is not possible in general to unambiguously define what is the minimal number of symbols required to describe a given string (given a specific description mechanism). In this context, the terms string and number may be used interchangeably, since a number is actually a string of symbols, e.g. an English word (like the word ""eleven"" used in the paradox) while, on the other hand, it is possible to refer to any word with a number, e.g. by the number of its position in a given dictionary or by suitable encoding. Some long strings can be described exactly using fewer symbols than those required by their full representation, as is often achieved using data compression. The complexity of a given string is then defined as the minimal length that a description requires in order to (unambiguously) refer to the full representation of that string.
+
+Advocates of proportional representation suggest that a coalition government leads to more consensus-based politics, as a government comprising differing parties (often based on different ideologies) need to compromise about governmental policy. Another stated advantage is that a coalition government better reflects the popular opinion of the electorate within a country; this means, for instance, that the political system contains just one majority-based mechanism. Contrast this with district voting in which the majority mechanism occurs twice: first, the majority of voters pick the representative and, second, the body of representatives make a subsequent majority decision. The doubled majority decision undermines voter support for that decision. The benefit of proportional representation is that it contains that majority mechanism just once. Additionally, coalition partnership may play an important role in moderating the level of affective polarization over parties, that is, the animosity and hostility against the opponent party identifiers/supporters.",0.6666666666666666,local,pick the best possible answer: what is the mechanism of ftir? based on the given context.,1519087797
+1590,What is the significance of Baryon Acoustic Oscillations (BAOs) in the study of the universe?,"BAOs establish a preferred length scale for baryons, which can be used to detect a subtle preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130-160 Mpc.",BAOs help to determine the average temperature of the Universe by measuring the temperature of the cosmic microwave background radiation.,BAOs provide a way to measure the time it takes for a signal to reach its destination compared to the time it takes for background noise to dissipate.,BAOs can be used to make a two-dimensional map of the galaxy distribution in the Universe.,BAOs are used to measure the speed of light in the Universe.,A,"Baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe on large scales. These are predicted to arise in the Lambda-CDM model due to acoustic oscillations in the photon–baryon fluid of the early universe and can be observed in the cosmic microwave background angular power spectrum. BAOs set up a preferred length scale for baryons. As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1%) preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130–160 Mpc. This feature was predicted theoretically in the 1990s and then discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations with BAO measurements from galaxy redshift surveys provides a precise estimate of the Hubble constant and the average matter density in the Universe. The results support the Lambda-CDM model.
+
+The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping (also called collisionless damping or Silk damping). The acoustic oscillations arise because of a conflict in the photon–baryon plasma in the early universe. The pressure of the photons tends to erase anisotropies, whereas the gravitational attraction of the baryons, moving at speeds much slower than light, makes them tend to collapse to form overdensities. These two effects compete to create acoustic oscillations, which give the microwave background its characteristic peak structure. The peaks correspond, roughly, to resonances in which the photons decouple when a particular mode is at its peak amplitude.
+
+Dark energy, though speculative, solves numerous problems. Measurements of the cosmic microwave background indicate that the universe is very nearly spatially flat, and therefore according to general relativity the universe must have almost exactly the critical density of mass/energy. But the mass density of the universe can be measured from its gravitational clustering, and is found to have only about 30% of the critical density. Since theory suggests that dark energy does not cluster in the usual way it is the best explanation for the ""missing"" energy density. Dark energy also helps to explain two geometrical measures of the overall curvature of the universe, one using the frequency of gravitational lenses, and the other using the characteristic pattern of the large-scale structure--baryon acoustic oscillations--as a cosmic ruler.",0.7142857142857143,local,what is the significance of baryon acoustic oscillations (baos) in the study of the universe?,4234785211
+1591,Which of the following is correct? What is the Josephson effect?,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.
+
+Dynamical Casimir effect 
+The dynamical Casimir effect is the production of particles and energy from an accelerated moving mirror. This reaction was predicted by certain numerical solutions to quantum mechanics equations made in the 1970s. In May 2011 an announcement was made by researchers at the Chalmers University of Technology, in Gothenburg, Sweden, of the detection of the dynamical Casimir effect. In their experiment, microwave photons were generated out of the vacuum in a superconducting microwave resonator. These researchers used a modified SQUID to change the effective length of the resonator in time, mimicking a mirror moving at the required relativistic velocity. If confirmed this would be the first experimental verification of the dynamical Casimir effect. In March 2013 an article appeared on the PNAS scientific journal describing an experiment that demonstrated the dynamical Casimir effect in a Josephson metamaterial. In July 2019 an article was published describing an experiment providing evidence of optical dynamical Casimir effect in a dispersion-oscillating fibre. In 2020, Frank Wilczek et al., proposed a resolution to the information loss paradox associated with the moving mirror model of the dynamical Casimir effect. Constructed within the framework of quantum field theory in curved spacetime, the dynamical Casimir effect (moving mirror) has been used to help understand the Unruh effect.
+
+Lord Rayleigh predicted the following effect in his classic book on sound: if the observer were moving from the (stationary) source at twice the speed of sound, a musical piece previously emitted by that source would be heard in correct tempo and pitch, but as if played backwards.",0.8,local,which of the following is correct? what is the josephson effect?,1513981481
+1592,Pick the best possible answer: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? among the listed options.,The atmosphere is a framework that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized structures and time-varying forcing from recurrent seasons.",The atmosphere is a mechanism that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic mechanism with no order or organization.,The atmosphere is a completely ordered framework with no chaos or randomness.,B,No match found.,0.0,live_api,pick the best possible answer: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? among the listed options.,1140164223
+1593,Identify the correct statement: What is the butterfly effect? carefully.,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the distinction between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"Finite predictability in chaotic systems 
+According to Lighthill (1986), the presence of SDIC (commonly known as the butterfly effect) implies that chaotic systems have a finite predictability limit. In a literature review, it was found that Lorenz's perspective on the predictability limit can be condensed into the following statement:
+
+Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.",0.5,local,identify the correct statement: what is the butterfly effect? carefully.,801278196
+1594,"Determine the correct option: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? based on the given context.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"A  normal wargame is a strategy game in which two or more players command opposing armed forces in a simulation of an armed conflict. Wargaming may be played for recreation, to train military officers in the art of strategic thinking, or to study the nature of potential conflicts. Many wargames re-create specific historic battles, and can cover either whole wars, or any campaigns, battles, or lower-level engagements within them. Many simulate land combat, but there are wargames for naval, air combat, and cyber conflicts, as well as many that combine various domains.
+There is ambiguity as to whether or not activities where participants physically perform mock combat actions (e.g. friendly warships firing dummy rounds at each other) are considered wargames. It is common terminology for a military's field training exercises and military exercise to be referred to as ""live wargames"", but certain institutions such as the US Navy do not accept this. Likewise, activities like paintball and ai",0.125,live_api,"determine the correct option: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? based on the given context.",744132370
+1595,Choose the correct answer: What was Pierre de Fermat's solution to the problem of refraction? from the following choices.,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"Mathematics
+Probability
+In 1654, prompted by his friend the Chevalier de Méré, Pascal corresponded with Pierre de Fermat on the subject of gambling problems, and from that collaboration was born the mathematical theory of probability. The specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. From this discussion, the notion of expected value was introduced. John Ross writes, ""Probability theory and the discoveries following it changed the way we regard uncertainty, risk, decision-making, and an individual's and society's ability to influence the course of future events."" Pascal, in the Pensées, used a probabilistic argument, Pascal's wager, to justify belief in God and a virtuous life. However, Pascal and Fermat, though doing important early work in probability theory, did not develop the field very far. Christiaan Huygens, learning of the subject from the correspondence of Pascal and Fermat, wrote the first book on the subject. Later figures who continued the development of the theory include Abraham de Moivre and Pierre-Simon Laplace. The work done by Fermat and Pascal on the calculus of probabilities laid important groundwork for Leibniz's formulation of the calculus.
+
+He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.",0.6153846153846154,local,choose the correct answer: what was pierre de fermat's solution to the problem of refraction? from the following choices.,2155929166
+1596,Choose the correct answer: What is bollard pull primarily used for measuring? from the following choices.,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,No match found.,0.0,live_api,choose the correct answer: what is bollard pull primarily used for measuring? from the following choices.,702335878
+1597,Select the most accurate option: What is the cause of the observed change in the periods of moons orbiting a distant planet when measured from Earth? carefully.,"The distinction in the size of the planet's moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the speed of light when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The distinction in distance travelled by light from the planet (or its moon) to Earth when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the atmospheric conditions of the planet when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the gravitational pull of the planet on its moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.",C,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.0,live_api,select the most accurate option: what is the cause of the observed change in the periods of moons orbiting a distant planet when measured from earth? carefully.,4193901457
+1598,What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere?,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,"The solar wind is a stream of charged particles released from the Sun's outermost atmospheric layer, the corona. This plasma mostly consists of electrons, protons and alpha particles with kinetic energy between 0.5 and 10 keV. The composition of the solar wind plasma also includes a mixture of particle species found in the solar plasma: trace amounts of heavy ions and atomic nuclei of elements such as carbon, nitrogen, oxygen, neon, magnesium, silicon, sulfur, and iron. There are also rarer traces of some other nuclei and isotopes such as phosphorus, titanium, chromium, and nickel's isotopes 58Ni, 60Ni, and 62Ni. Superimposed with the solar-wind plasma is the interplanetary magnetic field. The solar wind varies in density, temperature and speed over time and over solar latitude and longitude. Its particles can escape the Sun's gravity because of their high energy resulting from the high temperature of the corona, which in turn is a result of the coronal magnetic field. The boundary sep",0.125,live_api,what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere?,1358206641
+1599,Identify the correct statement: What is the SI unit of the physical quantity m/Q? from the following choices.,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by
+
+The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).",0.7272727272727273,local,identify the correct statement: what is the si unit of the physical quantity m/q? from the following choices.,1810397843
+1600,Which of the following is correct? What is the information loss paradox in black holes? from the following choices.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.
+
+Stars have been observed to get torn apart by tidal forces in the immediate vicinity of supermassive black holes in galaxy nuclei, in what is known as a tidal disruption event (TDE). Some of the material from the disrupted star forms an accretion disk around the black hole, which emits observable electromagnetic radiation.
+
+The defining feature of a black hole is the existence of an event horizon, a boundary in spacetime through which matter and light can pass only inward towards the center of the black hole. Nothing, not even light, can escape from inside the event horizon. Extract of page 26  Extract of page 168  The event horizon is referred to as such because if an event occurs within the boundary, information from that event cannot reach or affect an outside observer, making it impossible to determine whether such an event occurred.
+For non-rotating black holes, the geometry of the event horizon is precisely spherical, while for rotating black holes, the event horizon is oblate.",0.6666666666666666,local,which of the following is correct? what is the information loss paradox in black holes? from the following choices.,2694618686
+1601,Identify the correct statement: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level? carefully.,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,identify the correct statement: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level? carefully.,562021983
+1602,Determine the correct option: What is the Erlangen program?,"The Erlangen program is a technique of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on group concept and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In 2021, the Student Council of the University of Erlangen–Nuremberg changed the name of their Süd-Campus into Rommel-Campus, emphasising that the city of Erlangen stands behind the name and the university needs to do the same. The university's branch of the Education and Science Workers' Union describes the decision as problematic considering Rommel's history of supporting the Nazi regime.",0.8,local,determine the correct option: what is the erlangen program?,1319236101
+1603,Choose the correct answer: What is the contrast between probability mass function (PMF) and probability density function (PDF)? among the listed options.,"PMF is used only for continuous random variables, while PDF is used for both continuous and discrete random variables.","PMF is used for both continuous and discrete random variables, while PDF is used only for continuous random variables.","PMF is used for continuous random variables, while PDF is used for discrete random variables.","PMF is used for discrete random variables, while PDF is used for continuous random variables.",PMF and PDF are interchangeable terms used for the same concept in probability principle.,D,"Probability density function (PDF)
+The Cauchy distribution is the probability distribution with the following probability density function (PDF)
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .
+
+If treating several random variables  etc. the corresponding letters are used as subscripts while, if treating only one, the subscript is usually omitted. It is conventional to use a capital  for a cumulative distribution function, in contrast to the lower-case  used for probability density functions and probability mass functions. This applies when discussing general distributions: some specific distributions have their own conventional notation, for example the normal distribution uses  and  instead of  and , respectively.",0.42857142857142855,local,choose the correct answer: what is the contrast between probability mass function (pmf) and probability density function (pdf)? among the listed options.,628384732
+1604,Which of the following is correct? What is the Evans balance? carefully.,"The Evans balance is a framework used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a framework used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a mechanism used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a framework used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a structure used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.
+
+The person in an organisation who is employed to perform bookkeeping functions is usually called the bookkeeper (or book-keeper). They usually write the daybooks (which contain records of sales, purchases, receipts, and payments), and document each financial transaction, whether cash or credit, into the correct daybook—that is, petty cash book, suppliers ledger, customer ledger, etc.—and the general ledger. Thereafter, an accountant can create financial reports from the information recorded by the bookkeeper. The bookkeeper brings the books to the trial balance stage, from which an accountant may prepare financial reports  for the organisation, such as the income statement and balance sheet.
+
+Solo activities 
+While Cernan and Schmitt were on the lunar surface, Evans remained alone in the CSM in lunar orbit and was assigned a number of observational and scientific tasks to perform while awaiting the return of his crewmates. In addition to the operation of the various orbital science equipment contained in the CSM's SIM bay, Evans conducted both visual and photographic observation of surface features from his aerial vantage point. The orbit of the CSM having been modified to an elliptical orbit in preparation for the LM's departure and eventual descent, one of Evans' solo tasks in the CSM was to circularize its orbit such that the CSM would remain at approximately the same distance above the surface throughout its orbit. Evans observed geological features visible to him and used handheld cameras to record certain visual targets. Evans also observed and sketched the solar corona at ""sunrise"", or the period of time during which the CSM would pass from the darkened portion of the Moon to the illuminated portion when the Moon itself mostly obscured the sun. To photograph portions of the surface that were not illuminated by the sun while Evans passed over them, Evans relied in conjunction on exposure and Earthlight. Evans photographed such features as the craters Eratosthenes and Copernicus, as well as the vicinity of Mare Orientale, using this technique. According to the Apollo 17 Mission Report, Evans was able to capture all scientific photographic targets, as well as some other targets of interest.",0.8333333333333334,local,which of the following is correct? what is the evans balance? carefully.,421028544
+1605,Identify the correct statement: What is the application of Memristor? based on the given context.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control mechanisms, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.625,local,identify the correct statement: what is the application of memristor? based on the given context.,561061499
+1606,Identify the correct statement: What is the Penrose process?,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",1.0,local,identify the correct statement: what is the penrose process?,377823545
+1607,Choose the correct answer: What is Lorentz symmetry or Lorentz invariance in relativistic physics?,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"A partial listing of physical conservation equations due to symmetry that are said to be exact laws, or more precisely have never been proven to be violated:
+ Conservation law Respective Noether symmetry invariance Number of independent parameters(i.e. dimension of phase space) Conservation of energy  Time-translation invariance  Poincaré invariance 1  translation of time along -axis Conservation of linear momentum  Space-translation invariance 3  translation of space along x,y,z axes Conservation of angular momentum  Rotation invariance 3  rotation of space about x,y,z axes Conservation of boost 3-vector  Lorentz-boost invariance 3 Lorentz-boost of space-time along x,y,z axes Conservation of electric charge U(1)Q Gauge invariance 1  translation of electrodynamic scalar potential field along -axis (in phase space) Conservation of color charge SU(3)C Gauge invariance 3  translation of chromodynamic potential field along r,g,b-axes (in phase space) Conservation of weak isospin SU(2)L Gauge invariance 1  translation of weak potential field along axis in phase spaceConservation of the difference between baryon and lepton numbers B − LU(1)B−L Gauge invariance1
+
+Relativistic explanation
+The reasoning in the relativistic case is the same except that the relativistic velocity addition formulas must be used, which can be derived from Lorentz transformations between different frames of reference. These formulas are",0.5555555555555556,local,choose the correct answer: what is lorentz symmetry or lorentz invariance in relativistic physics?,4078689684
+1608,Select the most accurate option: What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? among the listed options.,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In early 2003, the first results of the Wilkinson Microwave Anisotropy Probe were released, yielding what were at the time the most accurate values for some of the cosmological parameters. The results disproved several specific cosmic inflation models, but are consistent with the inflation theory in general. The Planck space probe was launched in May 2009. Other ground and balloon-based cosmic microwave background experiments are ongoing.
+
+In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.",0.47058823529411764,local,select the most accurate option: what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? among the listed options.,3727207214
+1609,"What are amorphous ferromagnetic metallic alloys, and what are their advantages?","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,"Metalloids
+ Element AllotropesBoron Amorphous boron – brown powder – B12 regular icosahedra
+ α-rhombohedral boron
+ β-rhombohedral boron
+ γ-orthorhombic boron
+ α-tetragonal boron
+ β-tetragonal boron
+ High-pressure superconducting phaseSilicon Amorphous silicon
+ α-silicon, a semiconductor, diamond cubic structure
+ β-silicon - metallic, with the BCC similar to molybdenum and beta-tin (High Pressure Phase)
+ Q-Silicon - a ferromagnetic (Similar to Q-Carbon) and highly conductive phase of silicon (similar to graphite) 
+ Silicene, buckled planar single layer Silicon, similar to GrapheneGermanium Amorphous germanium
+α-germanium – semimetallic element or semiconductor, with the same structure as diamond (similar chemical properties with sulfur and silicon)
+β-germanium – metallic, with the same structure as beta-tin 
+Germanene – Buckled planar Germanium, similar to grapheneArsenic Yellow arsenic –  molecular non-metallic As4, with the same structure as white phosphorus (Similar chemical properties with nitrogen and phosphorus)
+ Gray arsenic, polymeric As (metallic, though heavily anisotropic) (similar to aluminum and antimony in chemical properties)
+ Black arsenic – molecular and non-metallic, with the same structure as red phosphorusAntimony Blue-white antimony – stable form (metallic), with the same structure as gray arsenic (similar to arsenic in chemical properties)
+ Black antimony (non-metallic and amorphous, only stable as a thin layer)Tellurium Amorphous tellurium – gray-black or brown powder
+ Crystalline tellurium – hexagonal crystalline structure (metalloid) (similar chemical properties with selenium)
+
+An alloy is a mixture of chemical elements of which in most cases at least one is a metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have properties that differ from those of the pure elements from which they are made. The vast majority of metals used for commercial purposes are alloyed to improve their properties or behavior, such as increased strength, hardness or corrosion resistance. Metals may also be alloyed to reduce their overall cost, for instance alloys of gold and copper.",0.8333333333333334,local,"what are amorphous ferromagnetic metallic alloys, and what are their advantages?",102174360
+1610,"Determine the correct option: What are amorphous ferromagnetic metallic alloys, and what are their advantages? based on the given context.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by slowly heating a solid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are crystalline alloys that can be made by slowly cooling a liquid alloy. Their properties are nearly anisotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly cooling a liquid alloy. Their properties are nearly isotropic, resulting in low coercivity, low hysteresis loss, high permeability, and high electrical resistivity.","Amorphous ferromagnetic metallic alloys are non-crystalline alloys that can be made by rapidly heating a solid alloy. Their properties are nearly isotropic, resulting in high coercivity, high hysteresis loss, low permeability, and low electrical resistivity.",D,No match found.,0.0,live_api,"determine the correct option: what are amorphous ferromagnetic metallic alloys, and what are their advantages? based on the given context.",471675315
+1611,Select the most accurate option: Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern?,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.
+
+The simplest descriptions of diffraction are those in which the situation can be reduced to a two-dimensional problem. For water waves, this is already the case; water waves propagate only on the surface of the water. For light, we can often neglect one direction if the diffracting object extends in that direction over a distance far greater than the wavelength. In the case of light shining through small circular holes, we have to take into account the full three-dimensional nature of the problem.",0.5263157894736842,local,select the most accurate option: which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern?,1244678858
+1612,Determine the correct option: What is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or Copernican principles that can be used to address specific issues in the Lambda-CDM model and distinguish between current models and other possible models? among the listed options.,"The Copernican principle, which proposes that Earth, the Solar mechanism, and the Milky Way are not at the centre of the universe, but instead, the universe is expanding equally in all directions. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","Inhomogeneous cosmology, which states that the universe is entirely homogeneous and isotropic, directly proportional to the density of matter and radiation. This model proposes that everything in the universe is completely uniform, but it does not match observations.","Inhomogeneous cosmology, which models the universe as an extremely large, low-density void, instead of using the concept of dark energy. According to the model, this principle can match the observed accelerating universe and cosmological constant, but it contradicts the Copernican principle.","The cosmological principle, which proposes that Earth, the Solar structure, and the Milky Way are at the centre of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","The principle of dark energy, which proposes that a new form of energy, not previously detected, is responsible for the acceleration of the expansion of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.",C,"Physics without the principle
+The standard model of cosmology, the Lambda-CDM model, assumes the Copernican principle and the more general cosmological principle. Some cosmologists and theoretical physicists have created models without the cosmological or Copernican principles to constrain the values of observational results, to address specific known issues in the Lambda-CDM model, and to propose tests to distinguish between current models and other possible models.",0.6060606060606061,local,determine the correct option: what is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or copernican principles that can be used to address specific issues in the lambda-cdm model and distinguish between current models and other possible models? among the listed options.,3029026371
+1613,"Choose the correct answer: What is the concept of simultaneity in Einstein's book, Relativity? based on the given context.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.",0.3333333333333333,local,"choose the correct answer: what is the concept of simultaneity in einstein's book, relativity? based on the given context.",3795241228
+1614,Choose the correct answer: What is the relationship between dielectric loss and the transparency of a material? among the listed options.,"Dielectric loss in a material can cause refraction, which can lower the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can raise the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can enhance the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.
+
+The Deseret alphabet was an outgrowth of the Restorationist idealism and utopianism of Young and the early LDS Church. The ""New Alphabet"" was intended to correct ""the corruptions and perversions of language which was originally pure"", and to meet the urgent need for a language to ""answer the demands of a constant intercommunication between several thousand languages"". One ""fitted to meet the great emergency of the great gathering and great work of teaching the law of the Lord to all people.""",0.5,local,choose the correct answer: what is the relationship between dielectric loss and the transparency of a material? among the listed options.,2569521156
+1615,Choose the correct answer: What is the role of CYCLOIDEA genes in the evolution of bilateral symmetry? carefully.,CYCLOIDEA genes are responsible for the selection of symmetry in the evolution of animals.,"CYCLOIDEA genes are responsible for the evolution of specialized pollinators in plants, which in turn led to the transition of radially symmetrical flowers to bilaterally symmetrical flowers.","CYCLOIDEA genes are responsible for the expression of dorsal petals in Antirrhinum majus, which control their size and shape.","CYCLOIDEA genes are responsible for the expression of transcription factors that control the expression of other genes, allowing their expression to influence developmental pathways relating to symmetry.",CYCLOIDEA genes are responsible for mutations that cause a reversion to radial symmetry.,D,"The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.
+
+In many of his writings, Mayr rejected reductionism in evolutionary biology, arguing that evolutionary pressures act on the whole organism, not on single genes, and that genes can have different effects depending on the other genes present. He advocated a study of the whole genome, rather than of only isolated genes. After articulating the biological species concept in 1942, Mayr played a central role in the species problem debate over what was the best species concept. He staunchly defended the biological species concept against the many definitions of ""species"" that others proposed.
+
+Although the semi-localized textbook σ-π separation model describes the bonding of allene using a pair of localized orthogonal π orbitals, the full molecular orbital description of the bonding is more subtle.  The symmetry-correct doubly-degenerate HOMOs of allene (adapted to the D2d point group) can either be represented by a pair of orthogonal MOs or as twisted helical linear combinations of these orthogonal MOs.  The symmetry of the system and the degeneracy of these orbitals imply that both descriptions are correct (in the same way that there are infinitely many ways to depict the doubly-degenerate HOMOs and LUMOs of benzene that correspond to different choices of eigenfunctions in a two-dimensional eigenspace).  However, this degeneracy is lifted in substituted allenes, and the helical picture becomes the only symmetry-correct description for the HOMO and HOMO–1 of the C2-symmetric . This qualitative MO description extends to higher odd-carbon cumulenes (e.g., 1,2,3,4-pentatetraene).",0.7,local,choose the correct answer: what is the role of cycloidea genes in the evolution of bilateral symmetry? carefully.,1622419003
+1616,Pick the best possible answer: What is a planetary structure? among the listed options.,A framework of planets that are all located in the same solar framework.,A structure of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star mechanism.,A mechanism of planets that are all located in the same galaxy.,A framework of planets that are all made of gas.,C,"This is a list of genres of literature and entertainment (film, television, music, and video games), excluding genres in the visual arts.
+Genre is the term for any category of creative work, which includes literature and other forms of art or entertainment (e.g. music)—whether written or spoken, audio or visual—based on some set of stylistic criteria. Genres are formed by conventions that change over time as new genres are invented and the use of old ones are discontinued. Often, works fit into multiple genres by way of borrowing and recombining these conventions.",0.0,live_api,pick the best possible answer: what is a planetary structure? among the listed options.,2002326604
+1617,Choose the correct answer: What is resistivity? among the listed options.,Resistivity is an extrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the resistance of a material to electrical current flow. It is measured in ohm-meters and is dependent on the material's shape and size.,Resistivity is an intrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohm-meters and is independent of the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohm-meters and is independent of the material's shape and size.,C,"The Internal Revenue Service (IRS) is the revenue service of the U.S. federal government. It is responsible for collecting U.S. federal taxes and for administering the Internal Revenue Code, the main body of U.S. federal statutory tax law. It is an agency of the U.S. Department of the Treasury and is led by the commissioner of internal revenue, who is appointed to a five-year term by the president of the United States. The duties of the IRS include providing tax assistance to taxpayers; pursuing and resolving instances of erroneous or fraudulent tax filings; and overseeing various benefits programs, including the Affordable Care Act.
+
+The IRS originates from the Office of Commissioner of Internal Revenue, a federal office created in 1862 to assess the nation's first income tax to fund the American Civil War. The temporary measure funded over a fifth of the Union's war expenses before being allowed to expire a decade later. In 1913, the Sixteenth Amendment to the U.S. Constitution was r",0.0,live_api,choose the correct answer: what is resistivity? among the listed options.,671180827
+1618,Identify the correct statement: What is explicit symmetry breaking in theoretical physics? from the following choices.,"Explicit symmetry breaking is the breaking of a symmetry of a framework by terms in its defining equations of motion that do not respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the framework.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that do not respect the symmetry, usually in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a framework by terms in its defining equations of motion that respect the symmetry, usually in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the framework.",B,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.2,live_api,identify the correct statement: what is explicit symmetry breaking in theoretical physics? from the following choices.,1528925432
+1619,Select the most accurate option: What was the aim of the Gravity Probe B (GP-B) mission? among the listed options.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"On the American late-night live television sketch comedy and variety show Saturday Night Live (SNL), a commercial advertisement parody is commonly shown after the host's opening monologue. Many of the parodies were produced by James Signorelli.  The industries, products, and ad formats targeted by the parodies have been wide-ranging, including fast food, beer, feminine hygiene products, toys, clothes, medications (both prescription and over-the-counter), financial institutions, automobiles, electronics, appliances, public-service announcements, infomercials, and movie & TV shows (including SNL itself).
+Many of SNL's ad parodies have been featured in prime-time clip shows over the years, including an April 1991 special hosted by Kevin Nealon and Victoria Jackson, as well as an early 1999 follow-up hosted by Will Ferrell that features his attempts to audition for a feminine hygiene commercial.  In late 2005 and in March 2009, the special was modernized, featuring commercials created sinc",0.07142857142857142,live_api,select the most accurate option: what was the aim of the gravity probe b (gp-b) mission? among the listed options.,132920463
+1620,Determine the correct option: What did Arthur Eddington discover about two of Einstein's types of gravitational waves?,"Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate mechanism he used, and could only be made to propagate at the speed of gravity by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of sound by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate mechanism he used, and could not be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of light by choosing appropriate coordinates.",C,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.0,live_api,determine the correct option: what did arthur eddington discover about two of einstein's types of gravitational waves?,937004284
+1621,What is linear frame dragging?,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"Near a rotating black hole, spacetime rotates similar to a vortex. The rotating spacetime will drag any matter and light into rotation around the spinning black hole. This effect of general relativity, called frame dragging, gets stronger closer to the spinning mass. The region of spacetime in which it is impossible to stay still is called the ergosphere.
+
+Fresnel's aether drag
+In 1818, Augustin Fresnel developed a modified explanation to account for the water telescope and for other aberration phenomena. He explained that the aether is generally at rest in the Sun's frame of reference, but objects partially drag the aether along with them as they move. That is, the aether in an object of index of refraction  moving at velocity  is partially dragged with a velocity  bringing the light along with it. This factor is known as ""Fresnel's dragging coefficient"". This dragging effect, along with refraction at the telescope's objective, compensates for the slower speed of light in the water telescope in Bradley's explanation.     With this modification Fresnel obtained Bradley's vacuum result even for non-vacuum telescopes, and was also able to predict many other phenomena related to the propagation of light in moving bodies. Fresnel's dragging coefficient became the dominant explanation of aberration for the next decades.",0.6666666666666666,local,what is linear frame dragging?,1238903323
+1622,Choose the correct answer: What are the four qualitative levels of crystallinity described by geologists?,"Holocrystalline, hypocrystalline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypohyaline, and holohyaline","Holocrystalline, hypohyaline, hypercrystalline, and holohyaline","Holocrystalline, hypocrystalline, hypercrystalline, and hyperhyaline","Holocrystalline, hypocrystalline, hypohyaline, and hyperhyaline",B,No match found.,0.0,live_api,choose the correct answer: what are the four qualitative levels of crystallinity described by geologists?,2911039918
+1623,What is a regular polytope?,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.
+
+The cube is a Hanner polytope, because it can be constructed by using the Cartesian product of three line segments. Its dual polyhedron, the regular octahedron, is constructed by the direct sum of three line segments.
+
+In general, the facets of a polytope's dual will be the topological duals of the polytope's vertex figures. For the polar reciprocals of the regular and uniform polytopes, the dual facets will be polar reciprocals of the original's vertex figure. For example, in four dimensions, the vertex figure of the 600-cell is the icosahedron;  the dual of the 600-cell is the 120-cell, whose facets are dodecahedra, which are the dual of the icosahedron.",1.0,local,what is a regular polytope?,1461507070
+1624,Which of the following is correct? Who was Giordano Bruno? among the listed options.,A German philosopher who supported the Keplerian framework that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic framework that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian concept that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican concept that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean principle that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""
+
+The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8
+
+Bellarmine was a professor of theology and later rector of the Roman College, and in 1602 became Archbishop of Capua. He supported the reform decrees of the Council of Trent. He is also widely remembered for his role in the Giordano Bruno affair, the Galileo affair, and the trial of Friar Fulgenzio Manfredi.",0.4444444444444444,local,which of the following is correct? who was giordano bruno? among the listed options.,2307092124
+1625,Determine the correct option: What is X-ray pulsar-based navigation (XNAV)?,X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in the Earth's atmosphere.,"X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic X-ray signals emitted from pulsars to determine the location of a vehicle in deep space, such as a spacecraft.","X-ray pulsar-based navigation (XNAV) is a navigation technique that uses the periodic radio signals emitted from satellites to determine the location of a vehicle in deep space, such as a spacecraft.",D,No match found.,0.0,live_api,determine the correct option: what is x-ray pulsar-based navigation (xnav)?,2389755337
+1626,Identify the correct statement: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680+) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680+ ultimately comes from the oxidation of water into O2 and H+ through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700+ of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700+ can vary.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.42857142857142855,local,identify the correct statement: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? from the following choices.,3737323487
+1627,What was Isaac Newton's explanation for rectilinear propagation of light?,"Isaac Newton rejected the wave theory of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave theory of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave theory of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave theory of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave theory of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,"Fresnel gave the first satisfactory explanation of diffraction by straight edges, including the first satisfactory wave-based explanation of rectilinear propagation. By further supposing that light waves are purely transverse, Fresnel explained the nature of polarization. He then worked on double refraction.
+
+Although Aristotle and other ancient scientists had already written on the nature of light and color vision, it was not until Isaac Newton that light was identified as the source of the color sensation. In 1810, Johann Wolfgang von Goethe published his comprehensive Theory of Colors in which he provided a rational description of color experience, which ""tells us how it originates, not what it is"".Schopenhauer, On Vision and Colours —  Introduction (1816)",0.875,local,what was isaac newton's explanation for rectilinear propagation of light?,1074716383
+1628,Which of the following is correct? Who published the first framework that was able to encompass previously separate field theories to provide a unifying framework of electromagnetism? based on the given context.,Maxwell,Einstein,Galileo,Faraday,Newton,A,"A scientific theory is an explanation of an aspect of the natural world that can be or that has been repeatedly tested and has corroborating evidence in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment. In circumstances not amenable to experimental testing, theories are evaluated through principles of abductive reasoning. Established scientific theories have withstood rigorous scrutiny and embody scientific knowledge.
+A scientific theory differs from a scientific fact: a fact is an observation, while a theory connects and explains multiple observations. Furthermore, a theory is expected to make predictions which could be confirmed or refuted with additional observations. Stephen Jay Gould wrote that: ""...facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are st",0.15,live_api,which of the following is correct? who published the first framework that was able to encompass previously separate field theories to provide a unifying framework of electromagnetism? based on the given context.,426885672
+1629,Pick the best possible answer: What is the role of CYCLOIDEA genes in the evolution of bilateral symmetry? carefully.,CYCLOIDEA genes are responsible for the selection of symmetry in the evolution of animals.,"CYCLOIDEA genes are responsible for the evolution of specialized pollinators in plants, which in turn led to the transition of radially symmetrical flowers to bilaterally symmetrical flowers.","CYCLOIDEA genes are responsible for the expression of dorsal petals in Antirrhinum majus, which control their size and shape.","CYCLOIDEA genes are responsible for the expression of transcription factors that control the expression of other genes, allowing their expression to influence developmental pathways relating to symmetry.",CYCLOIDEA genes are responsible for mutations that cause a reversion to radial symmetry.,D,"In many of his writings, Mayr rejected reductionism in evolutionary biology, arguing that evolutionary pressures act on the whole organism, not on single genes, and that genes can have different effects depending on the other genes present. He advocated a study of the whole genome, rather than of only isolated genes. After articulating the biological species concept in 1942, Mayr played a central role in the species problem debate over what was the best species concept. He staunchly defended the biological species concept against the many definitions of ""species"" that others proposed.
+
+An area of current investigation in evolutionary developmental biology is the developmental basis of adaptations and exaptations. This research addresses the origin and evolution of embryonic development and how modifications of development and developmental processes produce novel features.  These studies have shown that evolution can alter development to produce new structures, such as embryonic bone structures that develop into the jaw in other animals instead forming part of the middle ear in mammals. It is also possible for structures that have been lost in evolution to reappear due to changes in developmental genes, such as a mutation in chickens causing embryos to grow teeth similar to those of crocodiles. It is now becoming clear that most alterations in the form of organisms are due to changes in a small set of conserved genes.
+
+It also is often quite difficult to assign the L, L, L, L, symbols to the physical variables involved in the problem of interest. He invokes a procedure that involves the ""symmetry"" of the physical problem. This is often very difficult to apply reliably: It is unclear as to what parts of the problem that the notion of ""symmetry"" is being invoked. Is it the symmetry of the physical body that forces are acting upon, or to the points, lines or areas at which forces are being applied? What if more than one body is involved with different symmetries?",0.5454545454545454,local,pick the best possible answer: what is the role of cycloidea genes in the evolution of bilateral symmetry? carefully.,1859055426
+1630,Which of the following is correct? What is a magnetic monopole in particle physics? from the following choices.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.
+
+The prevailing view among cosmologists remains that dark matter is composed primarily of some type of not-yet-characterized subatomic particle. While this remains the majority opinion, the lack of particle detection has led to a divergence in consensus, with macroscopic candidates such as primordial black holes seeing renewed interest following observations by LIGO and JWST. The search for such particles, by a variety of means, is one of the major efforts in particle physics.
+
+External magnetic fields
+In experimental condensed matter physics, external magnetic fields act as thermodynamic variables that control the state, phase transitions and properties of material systems.  Nuclear magnetic resonance (NMR) is a method by which external magnetic fields are used to find resonance modes of individual nuclei, thus giving information about the atomic, molecular, and bond structure of their environment. NMR experiments can be made in magnetic fields with strengths up to 60 tesla.  Higher magnetic fields can improve the quality of NMR measurement data. Quantum oscillations is another experimental method where high magnetic fields are used to study material properties such as the geometry of the Fermi surface.  High magnetic fields will be useful in experimental testing of the various theoretical predictions such as the quantized magnetoelectric effect, image magnetic monopole, and the half-integer quantum Hall effect.",0.75,local,which of the following is correct? what is a magnetic monopole in particle physics? from the following choices.,4249269086
+1631,Identify the correct statement: What is the application of Memristor? among the listed options.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control frameworks, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.25,local,identify the correct statement: what is the application of memristor? among the listed options.,1717628622
+1632,Which of the following is correct? What did Newton adopt after his correspondence with Hooke in 1679-1680? based on the given context.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,"Sir Isaac Newton ( ; (1643-01-04)4 January 1643 [O.S. 25 December 1642] – 31 March [O.S. 20 March] 1727) was an English polymath who was a mathematician, physicist, astronomer, alchemist, theologian, author and inventor. He was a key figure in the Scientific Revolution and the Enlightenment that followed. His book Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687, achieved the first great unification in physics and established classical mechanics. Newton also made seminal contributions to optics, and shares credit with the German mathematician Gottfried Wilhelm Leibniz for formulating infinitesimal calculus, although he developed calculus years before Leibniz. Newton contributed to and refined the scientific method, and his work is considered the most influential in bringing forth modern science.
+In the Principia, Newton formulated the laws of motion and universal gravitation that formed the dominant scientific viewpoin",0.13333333333333333,live_api,which of the following is correct? what did newton adopt after his correspondence with hooke in 1679-1680? based on the given context.,532849696
+1633,Identify the correct statement: What did Newton's manuscripts of the 1660s show? from the following choices.,Newton learned about tangential motion and radially directed force or endeavour from Hooke's work.,Newton's manuscripts did not show any evidence of combining tangential motion with the effects of radially directed force or endeavour.,Newton combined tangential motion with the effects of radially directed force or endeavour and expressed the concept of linear inertia.,Newton's manuscripts showed that he learned about the inverse square law from Hooke's private papers.,"Newton's manuscripts showed that he was indebted to Descartes' work, published in 1644, for the concept of linear inertia.",C,"Sir Isaac Newton ( ; (1643-01-04)4 January 1643 [O.S. 25 December 1642] – 31 March [O.S. 20 March] 1727) was an English polymath who was a mathematician, physicist, astronomer, alchemist, theologian, author and inventor. He was a key figure in the Scientific Revolution and the Enlightenment that followed. His book Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687, achieved the first great unification in physics and established classical mechanics. Newton also made seminal contributions to optics, and shares credit with the German mathematician Gottfried Wilhelm Leibniz for formulating infinitesimal calculus, although he developed calculus years before Leibniz. Newton contributed to and refined the scientific method, and his work is considered the most influential in bringing forth modern science.
+In the Principia, Newton formulated the laws of motion and universal gravitation that formed the dominant scientific viewpoin",0.18181818181818182,live_api,identify the correct statement: what did newton's manuscripts of the 1660s show? from the following choices.,967820158
+1634,Which of the following is correct? What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? carefully.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's concept of general relativity.",C,No match found.,0.0,live_api,which of the following is correct? what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? carefully.,301922922
+1635,Identify the correct statement: What is the Landau-Lifshitz-Gilbert equation used for in physics? carefully.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,"Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. These laws, which provide the basis for Newtonian mechanics, can be paraphrased as follows:
+
+A body remains at rest, or in motion at a constant speed in a straight line, unless it is acted upon by a force.
+At any instant of time, the net force on a body is equal to the body's acceleration multiplied by its mass or, equivalently, the rate at which the body's momentum is changing with time.
+If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.
+The three laws of motion were first stated by Isaac Newton in his Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), originally published in 1687. Newton used them to investigate and explain the motion of many physical objects and systems. In the time since Newton, new insights, especially around the concept of energy, b",0.1,live_api,identify the correct statement: what is the landau-lifshitz-gilbert equation used for in physics? carefully.,168459593
+1636,Identify the correct statement: What is the application of Memristor? carefully.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control mechanisms, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",0.3333333333333333,local,identify the correct statement: what is the application of memristor? carefully.,3899802988
+1637,Identify the correct statement: What is a regular polytope? from the following choices.,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.
+
+The cube is a Hanner polytope, because it can be constructed by using the Cartesian product of three line segments. Its dual polyhedron, the regular octahedron, is constructed by the direct sum of three line segments.
+
+In general, the facets of a polytope's dual will be the topological duals of the polytope's vertex figures. For the polar reciprocals of the regular and uniform polytopes, the dual facets will be polar reciprocals of the original's vertex figure. For example, in four dimensions, the vertex figure of the 600-cell is the icosahedron;  the dual of the 600-cell is the 120-cell, whose facets are dodecahedra, which are the dual of the icosahedron.",0.2857142857142857,local,identify the correct statement: what is a regular polytope? from the following choices.,2927296052
+1638,Which of the following is correct? What is the role of the Higgs boson in the Standard Model? carefully.,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.5555555555555556,local,which of the following is correct? what is the role of the higgs boson in the standard model? carefully.,1968204463
+1639,Pick the best possible answer: What is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+UC HII regions 
+Ultra-compact HII regions are among the best tracers of high-mass star formation. The dense material surrounding UCHII regions is likely primarily molecular. Since a complete study of massive star formation necessarily involves the cloud from which the star formed, ammonia is an invaluable tool in understanding this surrounding molecular material. Since this molecular material can be spatially resolved, it is possible to constrain the heating/ionising sources, temperatures, masses, and sizes of the regions. Doppler-shifted velocity components allow for the separation of distinct regions of molecular gas that can trace outflows and hot cores originating from forming stars.
+
+The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .",0.5384615384615384,local,pick the best possible answer: what is the reason for the formation of stars exclusively within molecular clouds? from the following choices.,1604297374
+1640,Choose the correct answer: What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? based on the given context.,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,choose the correct answer: what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? based on the given context.,1532465262
+1641,Choose the correct answer: What is the significance of the speed of light in vacuum? from the following choices.,The speed of light in vacuum is only relevant when measuring the one-way speed of light.,The speed of light in vacuum is only relevant when measuring the two-way speed of light.,The speed of light in vacuum is independent of the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is dependent on the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is only relevant when c appears explicitly in the units of measurement.,C,"This is the speed of light in vacuum. Thus Maxwell's equations connect the vacuum permittivity , the vacuum permeability , and the speed of light, c0, via the above equation. This relationship had been discovered by Wilhelm Eduard Weber and Rudolf Kohlrausch prior to the development of Maxwell's electrodynamics, however Maxwell was the first to produce a field theory consistent with waves traveling at the speed of light.
+
+where
+ m0 is the rest mass of the body,
+ c is the speed of light in vacuum,
+  is the rest energy.
+
+Cosmological models employing a variable speed of light have been proposed to resolve the horizon problem of and provide an alternative to cosmic inflation. In the VSL models, the fundamental constant c, denoting the speed of light in vacuum, is greater in the early universe than its present value, effectively increasing the particle horizon at the time of decoupling sufficiently to account for the observed isotropy of the CMB.",0.3333333333333333,local,choose the correct answer: what is the significance of the speed of light in vacuum? from the following choices.,4266428700
+1642,Choose the correct answer: What is the application of Memristor? among the listed options.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control structures, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.25,local,choose the correct answer: what is the application of memristor? among the listed options.,4452081
+1643,Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,"Fans and compressors 
+Older belt-driven engine cooling fans often use a heat-activated clutch, in the form of a bimetallic strip. When the temperature is low, the spring winds and closes the valve, which lets the fan spin at about 20% to 30% of the crankshaft speed. As the temperature of the spring rises, it unwinds and opens the valve, allowing fluid past the valve, making the fan spin at about 60% to 90% of crankshaft speed.
+
+Magnons, electron spin waves, can be controlled by a magnetic field. Densities from the limit of a dilute gas to a strongly interacting Bose liquid are possible. Magnetic ordering is the analog of superfluidity. In 1999 condensation was demonstrated in antiferromagnetic , at temperatures as great as 14 K. The high transition temperature (relative to atomic gases) is due to the magnons' small mass (near that of an electron) and greater achievable density. In 2006, condensation in a ferromagnetic yttrium-iron-garnet thin film was seen even at room temperature,Magnon Bose Einstein Condensation made simple . Website of the ""Westfählische Wilhelms Universität Münster"" Prof. Demokritov. Retrieved 25 June 2012. with optical pumping.
+
+Dysprosium and holmium have the highest magnetic strengths of the elements, especially at low temperatures. Dysprosium has a simple ferromagnetic ordering at temperatures below its Curie temperature of , at which point it undergoes a first-order phase transition from the orthorhombic crystal structure to hexagonal close-packed (hcp). It then has a helical antiferromagnetic state, in which all of the atomic magnetic moments in a particular basal plane layer are parallel and oriented at a fixed angle to the moments of adjacent layers. This unusual antiferromagnetism transforms into a disordered (paramagnetic) state at . It transforms from the hcp phase to the body-centered cubic phase at .",0.5454545454545454,local,which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve?,576138823
+1644,Pick the best possible answer: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy?,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+where  is the mass of the background stars. The gravitational force from the massive object causes nearby stars to move faster than they otherwise would, increasing both  and . The Brownian velocity of Sgr A*, the supermassive black hole at the center of the Milky Way galaxy, is predicted from this formula to be less than 1 km s−1.",0.5384615384615384,local,pick the best possible answer: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy?,1121726189
+1645,Select the most accurate option: What is the main advantage of ferroelectric memristors? from the following choices.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,No match found.,0.0,live_api,select the most accurate option: what is the main advantage of ferroelectric memristors? from the following choices.,1173965323
+1646,Choose the correct answer: What is the main focus of the Environmental Science Center at Qatar University? from the following choices.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Cloning Fact Sheet  from Human Genome Project Information website.
+ 'Cloning' Freeview video by the Vega Science Trust and the BBC/OU
+ Cloning in Focus, an accessible and comprehensive look at cloning research from the University of Utah's Genetic Science Learning Center
+ Click and Clone. Try it yourself in the virtual mouse cloning laboratory, from the University of Utah's Genetic Science Learning Center
+ ""Cloning Addendum: A statement on the cloning report issues by the President's Council on Bioethics"" . National Review, 15 July 2002 8:45 am",0.3333333333333333,local,choose the correct answer: what is the main focus of the environmental science center at qatar university? from the following choices.,647721932
+1647,Choose the correct answer: What is the main sequence in astronomy? among the listed options.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar framework.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"The cutaway does not necessarily contribute any dramatic content of its own, but is used to help the editor assemble a longer sequence. For that reason, editors choose cutaways related to the main action, such as another action or object in the same location.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.",0.5555555555555556,local,choose the correct answer: what is the main sequence in astronomy? among the listed options.,3340838752
+1648,Pick the best possible answer: What is the reason for heating metals to a temperature just above the upper critical temperature? from the following choices.,"To prevent the grains of solution from growing too large, which reduces mechanical properties such as toughness, shear strength, and tensile strength.","To enhance the size of the grains of solution, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too large, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To prevent the grains of solution from growing too small, which enhances mechanical properties such as toughness, shear strength, and tensile strength.","To boost the size of the grains of solution, which minimizes mechanical properties such as toughness, shear strength, and tensile strength.",C,"At the transition temperature, the material's dielectric response becomes theoretically infinite. While a lack of temperature control would rule out any practical use of the material near its critical temperature, the dielectric effect remains exceptionally strong even at much higher temperatures. Titanates with critical temperatures far below room temperature have become synonymous with ""ceramic"" in the context of ceramic capacitors for just this reason.",0.2857142857142857,local,pick the best possible answer: what is the reason for heating metals to a temperature just above the upper critical temperature? from the following choices.,321550849
+1649,Choose the correct answer: What is the Kutta condition?,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem.  Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution.  Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+During the time of the first flights, Frederick W. Lanchester, Martin Kutta, and Nikolai Zhukovsky independently created theories that connected circulation of a fluid flow to lift. Kutta and Zhukovsky went on to develop a two-dimensional wing theory. Expanding upon the work of Lanchester, Ludwig Prandtl is credited with developing the mathematics behind thin-airfoil and lifting-line theories as well as work with boundary layers.",0.8,local,choose the correct answer: what is the kutta condition?,3404333233
+1650,"Which of the following is correct? Who proposed the principle of ""complexity from noise"" and when was it first introduced? from the following choices.",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.
+
+From 1796 to 1818 the Church began operating in Sri Lanka (formerly Ceylon), following the 1796 start of British colonisation, when the first services were held for the British civil and military personnel. In 1799, the first Colonial Chaplain was appointed, following which CMS and SPG missionaries began their work, in 1818 and 1844 respectively. Subsequently, the Church of Ceylon was established: in 1845 the diocese of Colombo was inaugurated, with the appointment of James Chapman as Bishop of Colombo. It served as an extra-provincial jurisdiction of the archbishop of Canterbury, who served as its metropolitan.
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.75,local,"which of the following is correct? who proposed the principle of ""complexity from noise"" and when was it first introduced? from the following choices.",1983414371
+1651,Determine the correct option: What is a magnetic monopole in particle physics? based on the given context.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.
+
+Any configuration of charges or currents has a 'dipole moment', which describes the dipole whose field is the best approximation, at large distances, to that of the given configuration.  This is simply one term in the multipole expansion when the total charge (""monopole moment"") is 0—as it always is for the magnetic case, since there are no magnetic monopoles.  The dipole term is the dominant one at large distances:  Its field falls off in proportion to , as compared to  for the next (quadrupole) term and higher powers of  for higher terms, or  for the monopole term.",0.5,local,determine the correct option: what is a magnetic monopole in particle physics? based on the given context.,818079262
+1652,Pick the best possible answer: What is a virtual particle? among the listed options.,A particle that is not affected by the strong force.,A particle that is not affected by the weak force.,A particle that is created in a laboratory for experimental purposes.,A particle that is not directly observable but is inferred from its effects on measurable particles.,A particle that is directly observable and can be measured in experiments.,D,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.1111111111111111,live_api,pick the best possible answer: what is a virtual particle? among the listed options.,1631206510
+1653,Choose the correct answer: What is the metallicity of Kapteyn's star estimated to be?,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.",0.4444444444444444,local,choose the correct answer: what is the metallicity of kapteyn's star estimated to be?,1091340745
+1654,Identify the correct statement: What is the definition of an improper rotation? based on the given context.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Substitution is replacing the terms in an expression to create a new expression. Substituting 3 for  in the expression  makes a new expression  with meaning . Substituting the terms of a statement makes a new statement. When the original statement is true independently of the values of the terms, the statement created by substitutions is also true. Hence, definitions can be made in symbolic terms and interpreted through substitution: if  is meant as the definition of  as the product of  with itself, substituting  for  informs the reader of this statement that  means . Often it's not known whether the statement is true independently of the values of the terms. And, substitution allows one to derive restrictions on the possible values, or show what conditions the statement holds under. For example, taking the statement , if  is substituted with , this implies , which is false, which implies that if  then  cannot be .
+
+One standard definition is that an angle is a figure consisting of two rays which lie in a plane and share a common endpoint. Alternatively, given such a figure, an angle might be defined as: the opening between the rays; the area of the plane that lies between the rays; or the amount of rotation about the vertex of one ray to the other.",0.5555555555555556,local,identify the correct statement: what is the definition of an improper rotation? based on the given context.,3526169407
+1655,What is the main focus of the Environmental Science Center at Qatar University?,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Cloning Fact Sheet  from Human Genome Project Information website.
+ 'Cloning' Freeview video by the Vega Science Trust and the BBC/OU
+ Cloning in Focus, an accessible and comprehensive look at cloning research from the University of Utah's Genetic Science Learning Center
+ Click and Clone. Try it yourself in the virtual mouse cloning laboratory, from the University of Utah's Genetic Science Learning Center
+ ""Cloning Addendum: A statement on the cloning report issues by the President's Council on Bioethics"" . National Review, 15 July 2002 8:45 am
+
+Education
+Damascus is the main center of education in Syria. It is home to Damascus University, which is the oldest and largest university in Syria. After the enactment of legislation allowing private higher institutions, several new universities were established in the city and the surrounding area, including:
+ Syrian Virtual University
+ International University for Science and Technology
+ Syrian Private University
+ Arab International University
+ University of Kalamoon
+ Yarmouk Private University
+ Wadi International University
+ Al-Jazeera University
+ European University Damascus
+
+Cologne is a major cultural center for the Rhineland; it hosts more than 30 museums and hundreds of galleries. There are many institutions of higher education, most notably the University of Cologne, one of Europe's oldest and largest universities; the Technical University of Cologne, Germany's largest university of applied sciences; and the German Sport University Cologne. It hosts three Max Planck science institutes and is a major research hub for the aerospace industry, with the German Aerospace Center and the European Astronaut Centre headquarters. Lufthansa, Europe's largest airline, have their main corporate headquarters in Cologne. It also has a significant chemical and automobile industry. Cologne Bonn Airport is a regional hub, the main airport for the region being Düsseldorf Airport. The Cologne Trade Fair hosts a number of trade shows.",0.7142857142857143,local,what is the main focus of the environmental science center at qatar university?,2296183184
+1656,Select the most accurate option: Which of the following statements accurately describes the characteristics of gravitational waves? based on the given context.,"Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.","Gravitational waves have an amplitude denoted by λ, which represents the distance between points of maximum stretch or squeeze. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by f, which is the frequency of the wave's oscillation.","Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.",C,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Gravitational waves
+Gravitational waves are ripples in the curvature of spacetime that propagate as waves at the speed of light, generated in certain gravitational interactions that propagate outward from their source. Gravitational-wave astronomy is an emerging branch of observational astronomy which aims to use gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs, neutron stars, and black holes; and events such as supernovae, and the formation of the early universe shortly after the Big Bang.
+
+The changing rates of clocks allowed Einstein to conclude that light waves change frequency as they move, and the frequency/energy relationship for photons allowed him to see that this was best interpreted as the effect of the gravitational field on the mass–energy of the photon. To calculate the changes in frequency in a nearly static gravitational field, only the time component of the metric tensor is important, and the lowest order approximation is accurate enough for ordinary stars and planets, which are much bigger than their Schwarzschild radius.",0.26666666666666666,local,select the most accurate option: which of the following statements accurately describes the characteristics of gravitational waves? based on the given context.,3615745184
+1657,Determine the correct option: What is a light-year? among the listed options.,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+Common derivative contract
+Some of the common variants of derivative contracts are as follows:
+ Forwards: tailored contract between two parties, where payment takes place at a specific time in the future at today's pre-determined price.
+ Futures: contracts to buy or sell an asset on a future date at a price specified today. A futures contract differs from a forward contract in that the futures contract is a standardized contract written by a clearing house that operates an exchange where the contract can be bought and sold; the forward contract is a non-standardized contract written by the parties themselves.
+ Options: contracts that give the owner the right, but not the obligation, to buy (in the case of a call option) or sell (in the case of a put option) an asset. The price at which the sale takes place is known as the strike price, and is specified at the time the parties enter into the option. The option contract also specifies a maturity date. In the case of a European option, the owner has the right to require the sale to take place on (but not before) the maturity date; in the case of an American option, the owner can require the sale to take place at any time up to the maturity date. If the owner of the contract exercises this right, the counter-party has the obligation to carry out the transaction. Options are of two types: call option and put option.
+ Binary options: contracts that provide the owner with an all-or-nothing profit profile.
+ Warrants: apart from the commonly used short-dated options which have a maximum maturity period of one year, there exist certain long-dated options as well, known as warrants. These are generally traded over the counter.
+ Swaps: contracts to exchange cash (flows) on or before a specified future date based on the underlying value of currencies exchange rates, bonds/interest rates, commodities exchange, stocks or other assets.
+Swaps can basically be categorized into Interest rate swap and currency swap.
+Some common examples of these derivatives are the following:
+
+The CIE color rendering index (CRI) is a method to determine how well a light source's illumination of eight sample patches compares to the illumination provided by a reference source. Cited together, the CRI and CCT give a numerical estimate of what reference (ideal) light source best approximates a particular artificial light, and what the difference is.",0.625,local,determine the correct option: what is a light-year? among the listed options.,3448633220
+1658,Determine the correct option: What is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.4166666666666667,local,determine the correct option: what is the relationship between the amplitude of a sound wave and its loudness? from the following choices.,720583426
+1659,Select the most accurate option: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? among the listed options.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,select the most accurate option: what is the 'reactive leidenfrost effect' observed in non-volatile materials? among the listed options.,293236001
+1660,"Determine the correct option: Which of the following statements accurately describes the impact of Modified Newtonian Dynamics (MOND) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? among the listed options.","MOND is a concept that reduces the observed missing baryonic mass in galaxy clusters by postulating the existence of a new form of matter called ""fuzzy dark matter.""",MOND is a framework that boosts the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 20.,MOND is a framework that explains the missing baryonic mass in galaxy clusters that was previously considered dark matter by demonstrating that the mass is in the form of neutrinos and axions.,MOND is a principle that reduces the discrepancy between the observed missing baryonic mass in galaxy clusters and the measured velocity dispersions from a factor of around 10 to a factor of about 2.,MOND is a principle that eliminates the observed missing baryonic mass in galaxy clusters by imposing a new mathematical formulation of gravity that does not require the existence of dark matter.,D,No match found.,0.0,live_api,"determine the correct option: which of the following statements accurately describes the impact of modified newtonian dynamics (mond) on the observed ""missing baryonic mass"" discrepancy in galaxy clusters? among the listed options.",3953138510
+1661,"Select the most accurate option: Who proposed the concept of ""maximal acceleration""?",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.0,live_api,"select the most accurate option: who proposed the concept of ""maximal acceleration""?",3219895945
+1662,Determine the correct option: What is the reason that Newton's second law cannot be used to calculate the development of a physical framework in quantum mechanics? based on the given context.,"The existence of particle spin, which is linear momentum that can be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that is always equal to zero.","The existence of particle spin, which is linear momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that can be described by the cumulative effect of point-like motions in space.",D,"While angular momentum total conservation can be understood separately from Newton's laws of motion as stemming from Noether's theorem in systems symmetric under rotations, it can also be understood simply as an efficient method of calculation of results that can also be otherwise arrived at directly from Newton's second law, together with laws governing the forces of nature (such as Newton's third law, Maxwell's equations and Lorentz force). Indeed, given initial conditions of position and velocity for every point, and the forces at such a condition, one may use Newton's second law to calculate the second derivative of position, and solving for this gives full information on the development of the physical system with time.Tenenbaum, M., & Pollard, H. (1985). Ordinary differential equations en elementary textbook for students of mathematics. Engineering and the Sciences. Note, however, that this is no longer true in quantum mechanics, due to the existence of particle spin, which is an angular momentum that cannot be described by the cumulative effect of point-like motions in space.
+
+Molecular dynamics (MD) use either quantum mechanics, molecular mechanics or a mixture of both to calculate forces which are then used to solve Newton's laws of motion to examine the time-dependent behavior of systems. The result of a molecular dynamics simulation is a trajectory that describes how the position and velocity of particles varies with time. The phase point of a system described by the positions and momenta of all its particles on a previous time point will determine the next phase point in time by integrating over Newton's laws of motion.",0.7142857142857143,local,determine the correct option: what is the reason that newton's second law cannot be used to calculate the development of a physical framework in quantum mechanics? based on the given context.,3754068530
+1663,Determine the correct option: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? based on the given context.,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's concept of general relativity.",C,No match found.,0.0,live_api,determine the correct option: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter? based on the given context.,2090598853
+1664,Choose the correct answer: What can be inferred about the electronic entropy of insulators and metals based on their densities of states at the Fermi level? based on the given context.,"Insulators and metals have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero.","Insulators have zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is essentially zero. Metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.","Insulators have non-zero density of states at the Fermi level, and therefore, their density of states-based electronic entropy is proportional to the temperature and density of states at the Fermi level. Metals have zero density of states at the Fermi level, and thus, their electronic entropy is essentially zero.","Insulators and metals have varying densities of states at the Fermi level, and thus, their electronic entropy may or may not be proportional to the temperature and density of states at the Fermi level.","Insulators and metals have non-zero density of states at the Fermi level, and thus, their electronic entropy should be proportional to the temperature and density of states at the Fermi level.",B,No match found.,0.0,live_api,choose the correct answer: what can be inferred about the electronic entropy of insulators and metals based on their densities of states at the fermi level? based on the given context.,3957920711
+1665,Identify the correct statement: What is the main factor that determines the occurrence of each type of supernova? from the following choices.,The star's distance from Earth,The star's age,The star's temperature,The star's luminosity,The progenitor star's metallicity,E,"Fixing or choosing the x-axis determines the y-axis up to direction. Namely, the y-axis is necessarily the perpendicular to the x-axis through the point marked 0 on the x-axis. But there is a choice of which of the two half lines on the perpendicular to designate as positive and which as negative. Each of these two choices determines a different orientation (also called handedness) of the Cartesian plane.
+
+Supernova 1987A was the closest supernova to occur since the invention of the telescope. SNR 0509-67.5 is the remnant of an unusually energetic Type Ia supernova from about 400 years ago.
+
+In April 2003, the Supernova Legacy Survey observed a type Ia supernova, designated SNLS-03D3bb, in a galaxy approximately 4 billion light years away. According to astronomers at the University of Toronto and elsewhere, the observations of this supernova are best explained by assuming that it arose from a white dwarf that had grown to twice the mass of the Sun before exploding.",0.46153846153846156,local,identify the correct statement: what is the main factor that determines the occurrence of each type of supernova? from the following choices.,760207749
+1666,Pick the best possible answer: What is the main focus of the Environmental Science Center at Qatar University? from the following choices.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party, he served as the 45th president from 2017 to 2021.
+Born into a wealthy New York City family, Trump graduated from the University of Pennsylvania in 1968 with a bachelor's degree in economics. He became the president of his family's real estate business in 1971, renamed it the Trump Organization, and began acquiring and building skyscrapers, hotels, casinos, and golf courses. He launched side ventures, many licensing the Trump name, and filed for six business bankruptcies in the 1990s and 2000s. From 2004 to 2015, he hosted the reality television show The Apprentice, bolstering his fame as a billionaire. Presenting himself as a political outsider, Trump won the 2016 presidential election against Democratic Party nominee Hillary Clinton.
+During his first presidency, Trump imposed a travel ban on seven Muslim",0.07692307692307693,live_api,pick the best possible answer: what is the main focus of the environmental science center at qatar university? from the following choices.,1975324216
+1667,Choose the correct answer: Which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? among the listed options.,"The angular spacing of features in the diffraction pattern is indirectly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is directly proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be narrower.","The angular spacing of features in the diffraction pattern is independent of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be the same as if it were big.","The angular spacing of features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be wider.","The angular spacing of features in the diffraction pattern is directly proportional to the square root of the dimensions of the object causing the diffraction. Therefore, if the diffracting object is smaller, the resulting diffraction pattern will be slightly narrower.",D,"Patterns 
+Several qualitative observations can be made of diffraction in general:
+ The angular spacing of the features in the diffraction pattern is inversely proportional to the dimensions of the object causing the diffraction. In other words: The smaller the diffracting object, the 'wider' the resulting diffraction pattern, and vice versa. (More precisely, this is true of the sines of the angles.)
+ The diffraction angles are invariant under scaling; that is, they depend only on the ratio of the wavelength to the size of the diffracting object.
+ When the diffracting object has a periodic structure, for example in a diffraction grating, the features generally become sharper. The third figure, for example, shows a comparison of a double-slit pattern with a pattern formed by five slits, both sets of slits having the same spacing, between the center of one slit and the next.",0.42857142857142855,local,choose the correct answer: which of the following statements accurately describes the relationship between the dimensions of a diffracting object and the angular spacing of features in the diffraction pattern? among the listed options.,3984093255
+1668,Which of the following is correct? What is the variation between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza?,"Myrmecophytes coevolve with ants, providing them with a home and sometimes food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with ants, providing them with food, while the ants defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and fungi, where the fungi help the plants gain water and mineral nutrients from the soil, while the plant gives the fungi water and mineral nutrients.","Myrmecophytes coevolve with butterflies, providing them with a home and sometimes food, while the butterflies defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and birds, where the birds help the plants gain water and mineral nutrients from the soil, while the plant gives the birds carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with birds, providing them with a home and sometimes food, while the birds defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and bacteria, where the bacteria help the plants gain water and mineral nutrients from the soil, while the plant gives the bacteria carbohydrates manufactured in photosynthesis.","Myrmecophytes coevolve with bees, providing them with a home and sometimes food, while the bees defend the plant from herbivores and competing plants. On the other hand, mycorrhiza is a mutualistic symbiosis between plants and insects, where the insects help the plants gain water and mineral nutrients from the soil, while the plant gives the insects carbohydrates manufactured in photosynthesis.",A,"Analysis of variance (ANOVA) is a family of statistical methods used to compare the means of two or more groups by analyzing variance. Specifically, ANOVA compares the amount of variation between the group means to the amount of variation within each group. If the between-group variation is substantially larger than the within-group variation, it suggests that the group means are likely different. This comparison is done using an F-test. The underlying principle of ANOVA is based on the law of total variance, which states that the total variance in a dataset can be broken down into components attributable to different sources. In the case of ANOVA, these sources are the variation between groups and the variation within groups.
+
+At least two views of design activity are consistent with the action-centric perspective. Both involve these three basic activities:
+ In the reflection-in-action paradigm, designers alternate between ""framing"", ""making moves"", and ""evaluating moves"". ""Framing"" refers to conceptualizing the problem, i.e., defining goals and objectives. A ""move"" is a tentative design decision. The evaluation process may lead to further moves in the design.
+ In the sensemaking–coevolution–implementation framework, designers alternate between its three titular activities. Sensemaking includes both framing and evaluating moves. Implementation is the process of constructing the design object. Coevolution is ""the process where the design agent simultaneously refines its mental picture of the design object based on its mental picture of the context, and vice versa"".
+
+Although the replication and transcription of DNA is highly standardized in eukaryotes, the same cannot be said for their karyotypes, which are often highly variable. There may be variation between species in chromosome number and in detailed organization.
+In some cases, there is significant variation within species. Often there is:
+1. variation between the two sexes
+2. variation between the germline and soma (between gametes and the rest of the body)
+3. variation between members of a population, due to balanced genetic polymorphism
+4. geographical variation between races
+5. mosaics or otherwise abnormal individuals.
+Also, variation in karyotype may occur during development from the fertilized egg.",0.4,local,which of the following is correct? what is the variation between the coevolution of myrmecophytes and the mutualistic symbiosis of mycorrhiza?,1648895261
+1669,Which of the following is correct? What is the proper distance for a redshift of 8.2? among the listed options.,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.5454545454545454,local,which of the following is correct? what is the proper distance for a redshift of 8.2? among the listed options.,3985176916
+1670,Determine the correct option: Which mathematical function is commonly used to characterize linear time-invariant mechanisms? carefully.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,No match found.,0.0,live_api,determine the correct option: which mathematical function is commonly used to characterize linear time-invariant mechanisms? carefully.,2555890794
+1671,Determine the correct option: What is the main focus of the Environmental Science Center at Qatar University? from the following choices.,"Environmental studies, with a main focus on marine science, atmospheric and political sciences.","Environmental studies, with a main focus on marine science, atmospheric and physical sciences.","Environmental studies, with a main focus on marine science, atmospheric and social sciences.","Environmental studies, with a main focus on marine science, atmospheric and biological sciences.","Environmental studies, with a main focus on space science, atmospheric and biological sciences.",D,"Cloning Fact Sheet  from Human Genome Project Information website.
+ 'Cloning' Freeview video by the Vega Science Trust and the BBC/OU
+ Cloning in Focus, an accessible and comprehensive look at cloning research from the University of Utah's Genetic Science Learning Center
+ Click and Clone. Try it yourself in the virtual mouse cloning laboratory, from the University of Utah's Genetic Science Learning Center
+ ""Cloning Addendum: A statement on the cloning report issues by the President's Council on Bioethics"" . National Review, 15 July 2002 8:45 am",0.3333333333333333,local,determine the correct option: what is the main focus of the environmental science center at qatar university? from the following choices.,3416976730
+1672,What is radiosity in radiometry?,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,"Computing
+Enlightenment (window manager), an X Window System window manager
+Enlighten (radiosity engine), code to do real-time calculation of indirect lighting (""radiosity"") in video
+Enlightenment Foundation Libraries, a set of graphics libraries
+
+In the original radiosity method (first proposed in 1984) now called classical radiosity, surfaces and lights in the scene are split into pieces called patches, a process called meshing (this step makes it a finite element method). The rendering code must then determine what fraction of the light being emitted or diffusely reflected (scattered) by each patch is received by each other patch. These fractions are called form factors or view factors (first used in engineering to model radiative heat transfer). The form factors are multiplied by the albedo of the receiving surface and put in a matrix. The lighting in the scene can then be expressed as a matrix equation (or equivalently a system of linear equations) that can be solved by methods from linear algebra.
+
+Alternative and extended versions of the radiosity method support non-Lambertian surfaces, such as glossy surfaces and mirrors, and sometimes use volumes or ""clusters"" of objects as well as surface patches. Stochastic or Monte Carlo radiosity uses random sampling in various ways, e.g. taking samples of incident light instead of integrating over all patches, which can improve performance but adds noise (this noise can be reduced by using deterministic iterations as a final step, unlike path tracing noise). Simplified and partially precomputed versions of radiosity are widely used for real-time rendering, combined with techniques such as octree radiosity that store approximations of the light field.",0.5,local,what is radiosity in radiometry?,3014634854
+1673,Identify the correct statement: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? among the listed options.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is significant for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is key for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,identify the correct statement: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? among the listed options.,2081580054
+1674,Choose the correct answer: What are the constituents of cold dark matter? from the following choices.,"They are unknown, but possibilities include large objects like MACHOs or new particles such as WIMPs and axions.",They are known to be black holes and Preon stars.,They are only MACHOs.,They are clusters of brown dwarfs.,They are new particles such as RAMBOs.,A,"Dark matter can be divided into cold, warm, and hot categories. These categories refer to velocity rather than an actual temperature, and indicate how far corresponding objects moved due to random motions in the early universe, before they slowed due to cosmic expansion. This distance is called the free streaming length. The categories of dark matter are set with respect to the size of the collection of mass prior to structure formation that later collapses to form a dwarf galaxy. This collection of mass is sometimes called a protogalaxy. Dark matter particles are classified as cold, warm, or hot if their free streaming length is much smaller (cold), similar to (warm), or much larger (hot) than the protogalaxy of a dwarf galaxy. Mixtures of the above are also possible: a theory of mixed dark matter was popular in the mid-1990s, but was rejected following the discovery of dark energy.
+
+After the recombination epoch, the slightly denser regions of the uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today. The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter. The best measurements available, from the Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold. This CDM is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about 4.6%. (See Table 8.)
+
+In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form of energy known as dark energy. Thus, dark matter constitutes 85% of the total mass, while dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy, its local density in the Solar System is much less than normal matter. The total of all the dark matter out to the orbit of Neptune would add up about 1017 kg, the same as a large asteroid. Dark matter is classified as ""cold"", ""warm"", or ""hot"" according to velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.",0.4444444444444444,local,choose the correct answer: what are the constituents of cold dark matter? from the following choices.,2991831568
+1675,Choose the correct answer: What is the relationship between dielectric loss and the transparency of a material? carefully.,"Dielectric loss in a material can cause refraction, which can minimize the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can raise the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can enhance the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.
+
+The Deseret alphabet was an outgrowth of the Restorationist idealism and utopianism of Young and the early LDS Church. The ""New Alphabet"" was intended to correct ""the corruptions and perversions of language which was originally pure"", and to meet the urgent need for a language to ""answer the demands of a constant intercommunication between several thousand languages"". One ""fitted to meet the great emergency of the great gathering and great work of teaching the law of the Lord to all people.""",0.6,local,choose the correct answer: what is the relationship between dielectric loss and the transparency of a material? carefully.,1162094277
+1676,Determine the correct option: What is the definition of anatomy? based on the given context.,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+In legal systems based on legal moralism, the predominant moral beliefs of society determine the legal definition as well as the social definition of crime. This system is less prominent in liberal democratic societies that prioritize individualism and multiculturalism over other moral beliefs.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.75,local,determine the correct option: what is the definition of anatomy? based on the given context.,3158785839
+1677,Determine the correct option: What did Newton adopt after his correspondence with Hooke in 1679-1680? from the following choices.,The language of inward or centripetal force.,The language of gravitational force.,The language of outward or centrifugal force.,The language of tangential and radial displacements.,The language of electromagnetic force.,A,No match found.,0.0,live_api,determine the correct option: what did newton adopt after his correspondence with hooke in 1679-1680? from the following choices.,3492254086
+1678,Which of the following is correct? What is radiosity in radiometry? among the listed options.,"Radiosity is the radiant flux entering a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux entering a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including absorbed, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit area, including emitted, reflected, and transmitted radiation.","Radiosity is the radiant flux leaving a surface per unit volume, including emitted, reflected, and transmitted radiation.",D,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.375,local,which of the following is correct? what is radiosity in radiometry? among the listed options.,1251143134
+1679,Pick the best possible answer: What is the definition of an improper rotation? among the listed options.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"In American television in 2019, notable events included television show debuts, finales, and cancellations; channel launches, closures, and re-brandings; stations changing or adding their network affiliations; and information about controversies and carriage disputes.",0.0,live_api,pick the best possible answer: what is the definition of an improper rotation? among the listed options.,66533177
+1680,Identify the correct statement: What is the most popular explanation for the shower-curtain effect? among the listed options.,The pressure differential between the inside and outside of the shower,The reduce in velocity resulting in an boost in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,identify the correct statement: what is the most popular explanation for the shower-curtain effect? among the listed options.,3891821697
+1681,Choose the correct answer: What is the cause of the observed change in the periods of moons orbiting a distant planet when measured from Earth? from the following choices.,"The contrast in the size of the planet's moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The distinction in the speed of light when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the distinction in distance being the diameter of the Earth's orbit around the Sun.","The contrast in distance travelled by light from the planet (or its moon) to Earth when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The contrast in the atmospheric conditions of the planet when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the contrast in distance being the diameter of the Earth's orbit around the Sun.","The variation in the gravitational pull of the planet on its moons when the Earth is at the point in its orbit that is closest to its planet than when the Earth is at the farthest point in its orbit, the variation in distance being the diameter of the Earth's orbit around the Sun.",C,"The Moon is a relatively large, terrestrial, planet-like natural satellite, with a diameter about one-quarter of Earth's. It is the largest moon in the Solar System relative to the size of its planet, although Charon is larger relative to the dwarf planet Pluto. The natural satellites of other planets are also referred to as ""moons"", after Earth's. The Moon and Earth orbit a common barycenter every 27.32 days relative to the background stars. When combined with the Earth–Moon system's common orbit around the Sun, the period of the synodic month, from new moon to new moon, is 29.53 days.
+
+Indirect methods 
+ Transit method
+ Radial velocity or Doppler method
+ As a planet orbits a star, the star also moves in its own small orbit around the system's center of mass. Variations in the star's radial velocity—that is, the speed with which it moves towards or away from Earth—can be detected from displacements in the star's spectral lines due to the Doppler effect. Extremely small radial-velocity variations can be observed, of 1 m/s or even somewhat less.
+ Transit timing variation (TTV)
+When multiple planets are present, each one slightly perturbs the others' orbits. Small variations in the times of transit for one planet can thus indicate the presence of another planet, which itself may or may not transit. For example, variations in the transits of the planet Kepler-19b suggest the existence of a second planet in the system, the non-transiting Kepler-19c.Planet Hunting: Finding Earth-like Planets . Scientific Computing. 19 July 2010
+ Transit duration variation (TDV)
+ Gravitational microlensing
+Microlensing occurs when the gravitational field of a star acts like a lens, magnifying the light of a distant background star. Planets orbiting the lensing star can cause detectable anomalies in magnification as it varies over time. Unlike most other methods which have a detection bias towards planets with small (or for resolved imaging, large) orbits, the microlensing method is most sensitive to detecting planets around 1–10 AU away from Sun-like stars.
+ Astrometry
+alt=|thumb|A planet is able to gravitationally pull its host star Astrometry consists of precisely measuring a star's position in the sky and observing the changes in that position over time. The motion of a star due to the gravitational influence of a planet may be observable. Because the motion is so small, however, this method was not very productive until the 2020s. It has produced only a few confirmed discoveries, though it has been successfully used to investigate the properties of planets found in other ways.
+ Pulsar timing
+A pulsar, a small, dense remnant of a star that has exploded as a supernova, emits radio waves regularly as it rotates. If planets orbit the pulsar, the motion of the pulsar around the system's center of mass alters the pulsar's distance to Earth over time. As a result, the radio pulses from the pulsar arrive on Earth at a later or earlier time. This light travel delay due to the pulsar being physically closer or farther from Earth is known as a Roemer time delay. The first confirmed discovery of an extrasolar planet was made using this method. But as of 2011, it has not been very productive; five planets have been detected in this way, around three different pulsars.
+ Variable star timing (pulsation frequency)
+Like pulsars, there are some other types of stars which exhibit periodic activity. Deviations from periodicity can sometimes be caused by a planet orbiting it. As of 2013, a few planets have been discovered with this method.
+ Reflection/emission modulations
+When a planet orbits very close to a star, it catches a considerable amount of starlight. As the planet orbits the star, the amount of light changes due to planets having phases from Earth's viewpoint or planets glowing more from one side than the other due to temperature differences.
+ Relativistic beaming
+Relativistic beaming measures the observed flux from the star due to its motion. The brightness of the star changes as the planet moves closer or further away from its host star.
+ Ellipsoidal variations
+Massive planets close to their host stars can slightly deform the shape of the star. This causes the brightness of the star to slightly deviate depending on how it is rotated relative to Earth.
+ Polarimetry
+With the polarimetry method, a polarized light reflected off the planet is separated from unpolarized light emitted from the star. No new planets have been discovered with this method, although a few already discovered planets have been detected with this method.
+ Circumstellar disks
+Disks of space dust surround many stars, thought to originate from collisions among asteroids and comets. The dust can be detected because it absorbs starlight and re-emits it as infrared radiation. Features on the disks may suggest the presence of planets, though this is not considered a definitive detection method.
+
+In addition to scientific advances, the designers speculated on the future development of human society.Reynolds (June 4, 1998), p3. The designers allow the player to decide on a whole series of value choices and choose a ""ruthless"", ""moderate"", or ""idealistic"" stance. Reynolds said the designers don't promote a single ""right"" answer, instead giving each value choice positive and negative consequences. This design was intended to force the player to ""think"" and make the game ""addictive"". He also commented that Alpha Centauris fictional nature allowed them to draw their characters ""a lot more sharply and distinctly than the natural blurring and greyness of history"".
+Chiron, the name of the planet, is the name of the only non-barbaric centaur in Greek mythology and an important loregiver and teacher for humanity. The name also pays homage to James P. Hogan's 1982 space opera novel Voyage from Yesteryear, in which a human colony is artificially planted by an automatic probe on a planet later named by colonists as Chiron. In the game, Chiron has two moons, named after the centaurs Nessus and Pholus, with the combined tidal force of Earth's Moon, and is the second planet out from Alpha Centauri A, the innermost planet being the Mercury-like planet named after the centaur Eurytion. Alpha Centauri B is also dubbed Hercules, a reference to him killing several centaurs in mythology, and the second star preventing the formation of larger planets. The arrival on Chiron is referred to as ""Planetfall"", which is a term used in many science fiction novels, including Robert A. Heinlein's Future History series, and Infocom's celebrated comic interactive fiction adventure Planetfall. Vernor Vinge's concept of technological singularity is the origin of the Transcendence concept. The game's cutscenes use montages of live-action video, CGI, or both; most of the former is from the 1992 experimental documentary Baraka.",0.6875,local,choose the correct answer: what is the cause of the observed change in the periods of moons orbiting a distant planet when measured from earth? from the following choices.,256740186
+1682,Which of the following is correct? What are coherent turbulent structures? carefully.,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the procedures of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the procedures of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the techniques of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the techniques of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.",C,"Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to analyze and solve problems that involve flows.  Computers are used to perform the calculations required to simulate the free-stream flow of the fluid, and the interaction of the fluid (liquids and gases) with surfaces defined by boundary conditions. With high-speed supercomputers, better solutions can be achieved, and are often required to solve the largest and most complex problems. Ongoing research yields software that improves the accuracy and speed of complex simulation scenarios such as transonic or turbulent flows. Initial validation of such software is typically performed using experimental apparatus such as wind tunnels.  In addition, previously performed analytical or empirical analysis of a particular problem can be used for comparison.  A final validation is often performed using full-scale testing, such as flight tests.
+CFD is applied to a range of research",0.2857142857142857,local,which of the following is correct? what are coherent turbulent structures? carefully.,3719771134
+1683,Choose the correct answer: What is the function of the fibrous cardiac skeleton? carefully.,The fibrous cardiac skeleton is a framework of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+Mechanism of action 
+Cardiac glycosides affect the sodium-potassium ATPase pump in cardiac muscle cells to alter their function. Normally, these sodium-potassium pumps move potassium ions in and sodium ions out. Cardiac glycosides, however, inhibit this pump by stabilizing it in the E2-P transition state, so that sodium cannot be extruded: intracellular sodium concentration therefore increases. With regard to potassium ion movement, because both cardiac glycosides and potassium compete for binding to the ATPase pump, changes in extracellular potassium concentration can potentially lead to altered drug efficacy. Nevertheless, by carefully controlling the dosage, such adverse effects can be avoided. Continuing on with the mechanism, raised intracellular sodium levels inhibit the function of a second membrane ion exchanger, NCX, which is responsible for pumping calcium ions out of the cell and sodium ions in at a ratio of . Thus, calcium ions are also not extruded and will begin to build up inside the cell as well.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.75,local,choose the correct answer: what is the function of the fibrous cardiac skeleton? carefully.,3712360498
+1684,Pick the best possible answer: What is the decay energy for the free neutron decay process?,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+Bound-state β decay 
+A very small minority of free neutron decays (about four per million) are ""two-body decays"": the proton, electron and antineutrino are produced, but the electron fails to gain the 13.6 eV energy necessary to escape the proton, and therefore simply remains bound to it, as a neutral hydrogen atom.An Overview Of Neutron Decay  J. Byrne in Quark-Mixing, CKM Unitarity (H. Abele and D. Mund, 2002), see p.XV In this type of beta decay, in essence all of the neutron decay energy is carried off by the antineutrino.
+
+One curiosity is why alpha particles, helium nuclei, should be preferentially emitted as opposed to other particles like a single proton or neutron or other atomic nuclei.These other decay modes, while possible, are extremely rare compared to alpha decay. Part of the reason is the high binding energy of the alpha particle, which means that its mass is less than the sum of the masses of two free protons and two free neutrons. This increases the disintegration energy. Computing the total disintegration energy given by the equation",0.6666666666666666,local,pick the best possible answer: what is the decay energy for the free neutron decay process?,4109839684
+1685,"Pick the best possible answer: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"Healthcare in the United States is largely provided by private sector healthcare facilities, and paid for by a combination of public programs, county indigent health care programs, private insurance, and out-of-pocket payments. The U.S. is the only developed country without a system of universal healthcare, with around 92% of the population covered under some kind of health insurance for some, or all of the year. The United States spends more on healthcare than any other country, both in absolute terms and as a percentage of GDP; however, this expenditure does not necessarily translate into better overall health outcomes compared to other developed nations. In 2022, the United States spent approximately 17.8% of its Gross Domestic Product (GDP) on healthcare, significantly higher than the average of 11.5% among other high-income countries. Coverage varies across the population with certain groups. This includes the elderly, disabled, and low-income individuals receiving more comprehens",0.0625,live_api,"pick the best possible answer: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.",859782177
+1686,Select the most accurate option: What are coherent turbulent structures? based on the given context.,"Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for long enough periods that the techniques of time-averaged statistics can be applied.","Coherent turbulent structures are the most elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for very short periods that the approachs of time-averaged statistics cannot be applied.","Coherent turbulent structures are more elementary components of complex multi-scale and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the approachs of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which have temporal coherence and persist in their form for long enough periods that the procedures of time-averaged statistics can be applied.","Coherent turbulent structures are the most complex and chaotic motions in turbulent flows, which do not have temporal coherence and persist in their form for very short periods that the techniques of time-averaged statistics cannot be applied.",C,"Development communication refers to the use of communication to facilitate social development. Development communication engages stakeholders and policy makers, establishes conducive environments, assesses risks and opportunities and promotes information exchange to create positive social change via sustainable development. Development communication techniques include information dissemination and education, behavior change, social marketing, social mobilization, media advocacy, communication for social change, and community participation.
+
+Development communication has been labeled as the ""Fifth Theory of the Press"", with ""social transformation and development"", and ""the fulfillment of basic needs"" as its primary purposes. Jamias articulated the philosophy of development communication which is anchored on three main ideas. Their three main ideas are: purposive, value-laden, and pragmatic. Nora C. Quebral expanded the definition, calling it ""the art and science of human communication a",0.0,live_api,select the most accurate option: what are coherent turbulent structures? based on the given context.,1566449492
+1687,Which of the following is correct? What is the gravitomagnetic interaction? among the listed options.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general principle of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+Tanaju is also listed in an inscription at the Mortuary Temple of Amenhotep III. Amenhotep III ruled Egypt in –1344 BC. A list of the cities and regions of the Tanaju is mentioned in this inscription. Among the cities listed are Mycenae, Nauplion, Kythera, Messenia and the Thebaid (region of Thebes).; .",0.5,local,which of the following is correct? what is the gravitomagnetic interaction? among the listed options.,99527067
+1688,Which of the following is correct? What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth? from the following choices.,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,which of the following is correct? what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth? from the following choices.,1280033010
+1689,"Which of the following is correct? What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? among the listed options.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)
+
+In Newtonian mechanics, the acceleration of a mass arises from forces acting on it, with its net acceleration being a result of the net force acting on it. By Newton's second law, the magnitude of the net acceleration will be proportional to the magnitude of the net force acting on the object and inversely proportional to the mass of the object, while the direction of the net acceleration will be the same as the direction of the net force.",0.3888888888888889,local,"which of the following is correct? what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? among the listed options.",1523907272
+1690,Pick the best possible answer: Which of the following statements is true about the categorization of planetary structures according to their orbital dynamics? from the following choices.,Planetary frameworks cannot be categorized based on their orbital dynamics.,"Planetary structures can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the structure.",Planetary structures can only be categorized as resonant or non-resonant-interacting.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary structures can only be categorized as hierarchical or non-hierarchical.,D,No match found.,0.0,live_api,pick the best possible answer: which of the following statements is true about the categorization of planetary structures according to their orbital dynamics? from the following choices.,4108766653
+1691,Choose the correct answer: What is accelerator-based light-ion fusion? carefully.,"Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This approach is relatively difficult to implement and requires a complex framework of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 10 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fusion reactions. This procedure is relatively difficult to implement and requires a complex framework of vacuum tubes, electrodes, and transformers. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce heavy-ion fusion reactions. This approach is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fusion can be observed with as little as 100 kV between the electrodes.","Accelerator-based light-ion fusion is a technique that uses particle accelerators to achieve particle kinetic energies sufficient to induce light-ion fission reactions. This technique is relatively easy to implement and can be done in an efficient manner, requiring only a vacuum tube, a pair of electrodes, and a high-voltage transformer. Fission can be observed with as little as 10 kV between the electrodes.",A,The following scientific events occurred in 2023.,0.0,live_api,choose the correct answer: what is accelerator-based light-ion fusion? carefully.,1335033420
+1692,Select the most accurate option: What is Martin Heidegger's view on the relationship between time and human existence? from the following choices.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Simone Adolphine Weil (; French: [simɔn adɔlfin vɛj]; 3 February 1909 – 24 August 1943) was a French philosopher, mystic and political activist. Despite her short life, her ideas concerning religion, spirituality and politics have remained widely influential in contemporary philosophy.
+She was born in Paris to an Alsatian Jewish family. Her elder brother, André, would later become a renowned mathematician. After her graduation from formal education, Weil became a teacher. She taught intermittently throughout the 1930s, taking several breaks because of poor health and in order to devote herself to political activism. She assisted in the trade union movement, taking the side of the anarchists known as the Durruti Column in the Spanish Civil War. During a twelve-month period she worked as a labourer, mostly in car factories, so that she could better understand the working class.
+Weil was very attracted to the ascetic egalitarian elements of Christianity, and became increasingly religious",0.0,live_api,select the most accurate option: what is martin heidegger's view on the relationship between time and human existence? from the following choices.,2841493753
+1693,Identify the correct statement: What is the proper distance for a redshift of 8.2?,"The proper distance for a redshift of 8.2 is about 6.2 Gpc, or about 24 billion light-years.","The proper distance for a redshift of 8.2 is about 7.2 Gpc, or about 26 billion light-years.","The proper distance for a redshift of 8.2 is about 9.2 Gpc, or about 30 billion light-years.","The proper distance for a redshift of 8.2 is about 8.2 Gpc, or about 28 billion light-years.","The proper distance for a redshift of 8.2 is about 10.2 Gpc, or about 32 billion light-years.",C,"Today, the ""apparent velocities"" in question are usually thought of as an increase in proper distance that occurs due to the expansion of the universe. Light traveling through an expanding metric will experience a Hubble-type redshift, a mechanism somewhat different from the Doppler effect, although the two mechanisms become equivalent descriptions related by a coordinate transformation for nearby galaxies.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.",0.75,local,identify the correct statement: what is the proper distance for a redshift of 8.2?,2248456594
+1694,"Choose the correct answer: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? based on the given context.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The principle of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical structure can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals
+
+In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).",0.5714285714285714,local,"choose the correct answer: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? based on the given context.",4207270432
+1695,Which of the following is correct? What is resistivity? carefully.,Resistivity is an extrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the resistance of a material to electrical current flow. It is measured in ohm-meters and is dependent on the material's shape and size.,Resistivity is an intrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohm-meters and is independent of the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohm-meters and is independent of the material's shape and size.,C,"In accordance with magnetic data, electrical resistivity of curium increases with temperature – about twice between 4 and 60 K – and then is nearly constant up to room temperature. There is a significant increase in resistivity over time (~) due to self-damage of the crystal lattice by alpha decay. This makes uncertain the true resistivity of curium (~). Curium's resistivity is similar to that of gadolinium, and the actinides plutonium and neptunium, but significantly higher than that of americium, uranium, polonium and thorium.
+
+As with many other actinides, self-damage of the crystal structure due to alpha-particle irradiation is intrinsic to americium. It is especially noticeable at low temperatures, where the mobility of the produced structure defects is relatively low, by broadening of X-ray diffraction peaks. This effect makes somewhat uncertain the temperature of americium and some of its properties, such as electrical resistivity. So for americium-241, the resistivity at 4.2 K increases with time from about 2 μOhm·cm to 10 μOhm·cm after 40 hours, and saturates at about 16 μOhm·cm after 140 hours. This effect is less pronounced at room temperature, due to annihilation of radiation defects; also heating to room temperature the sample which was kept for hours at low temperatures restores its resistivity. In fresh samples, the resistivity gradually increases with temperature from about 2 μOhm·cm at liquid helium to 69 μOhm·cm at room temperature; this behavior is similar to that of neptunium, uranium, thorium and protactinium, but is different from plutonium and curium which show a rapid rise up to 60 K followed by saturation. The room temperature value for americium is lower than that of neptunium, plutonium and curium, but higher than for uranium, thorium and protactinium.
+
+TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.",0.8,local,which of the following is correct? what is resistivity? carefully.,434113136
+1696,Select the most accurate option: What is a magnetic monopole in particle physics? based on the given context.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.",0.36363636363636365,local,select the most accurate option: what is a magnetic monopole in particle physics? based on the given context.,543256395
+1697,Pick the best possible answer: Who was the first person to describe the pulmonary circulation mechanism?,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.
+
+The aortic arch loops over the left pulmonary artery and the bifurcation of the pulmonary trunk, to which it remains connected by the ligamentum arteriosum, a remnant of the fetal circulation that is obliterated a few days after birth. In addition to these blood vessels, the aortic arch crosses the left main bronchus. Between the aortic arch and the pulmonary trunk is a network of autonomic nerve fibers, the cardiac plexus or aortic plexus. The left vagus nerve, which passes anterior to the aortic arch, gives off a major branch, the recurrent laryngeal nerve, which loops under the aortic arch just lateral to the ligamentum arteriosum. It then runs back to the neck.",0.36363636363636365,local,pick the best possible answer: who was the first person to describe the pulmonary circulation mechanism?,2779064071
+1698,Identify the correct statement: What is reciprocal length or inverse length? from the following choices.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.4444444444444444,local,identify the correct statement: what is reciprocal length or inverse length? from the following choices.,903317320
+1699,"Pick the best possible answer: What is a transient condensation cloud, also known as a Wilson cloud? based on the given context.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Amphetamine is a central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy; it is also used to treat binge eating disorder in the form of lisdexamfetamine. Historically, it has been used to treat nasal congestion and depression. Amphetamine is also used as an athletic performance enhancer and cognitive enhancer, and recreationally as an aphrodisiac and euphoriant. It is a prescription drug in many countries, and unauthorized possession and distribution of amphetamine are often tightly controlled due to the significant health risks associated with recreational use.
+Amphetamine was discovered as a chemical in 1887 by Lazăr Edeleanu, and then as a drug in the late 1920s. It exists as two enantiomers: levoamphetamine and dextroamphetamine. The first amphetamine pharmaceutical was Benzedrine. Pharmaceutical amphetamine is prescribed as racemic amphetamine, Adderall, dextroamphetamine, or lisdexamfetamine. Amphetami",0.07692307692307693,live_api,"pick the best possible answer: what is a transient condensation cloud, also known as a wilson cloud? based on the given context.",1578560265
+1700,Which of the following is correct? What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? based on the given context.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.",0.5384615384615384,local,which of the following is correct? what is the relationship between the cauchy momentum equation and the navier-stokes equation? based on the given context.,600767837
+1701,Determine the correct option: What is the formalism that angular momentum is associated with in rotational invariance? based on the given context.,Angular momentum is the 1-form Noether charge associated with rotational invariance.,Angular momentum is the 3-form Noether charge associated with rotational invariance.,Angular momentum is the 5-form Noether charge associated with rotational invariance.,Angular momentum is the 2-form Noether charge associated with rotational invariance.,Angular momentum is the 4-form Noether charge associated with rotational invariance.,D,"Angular momentum in general relativity 
+In modern (20th century) theoretical physics, angular momentum (not including any intrinsic angular momentum – see below) is described using a different formalism, instead of a classical pseudovector. In this formalism, angular momentum is the 2-form Noether charge associated with rotational invariance. As a result, angular momentum is generally not conserved locally for general curved spacetimes, unless they have rotational symmetry; whereas globally the notion of angular momentum itself only makes sense if the spacetime is asymptotically flat. If the spacetime is only axially symmetric like for the Kerr metric, the total angular momentum is not conserved but  is conserved which is related to the invariance of rotating around the symmetry-axis, where note that  where  is the metric,  is the rest mass,  is the four-velocity, and  is the four-position in spherical coordinates.
+
+Noether's theorem states that every conservation law is associated with a symmetry (invariant) of the underlying physics. The symmetry associated with conservation of angular momentum is rotational invariance. The fact that the physics of a system is unchanged if it is rotated by any angle about an axis implies that angular momentum is conserved.
+
+Lagrangian formalism 
+In Lagrangian mechanics, angular momentum for rotation around a given axis, is the conjugate momentum of the generalized coordinate of the angle around the same axis. For example, , the angular momentum around the z axis, is:",0.6153846153846154,local,determine the correct option: what is the formalism that angular momentum is associated with in rotational invariance? based on the given context.,2533479545
+1702,"Which of the following is correct? What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? from the following choices.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The concept of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.5833333333333334,local,"which of the following is correct? what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? from the following choices.",2318971265
+1703,What is a crossover experiment?,An experiment that involves crossing over two different types of materials to create a new material.,"A type of experiment used to distinguish between different mechanisms proposed for a chemical reaction, such as intermolecular vs. intramolecular mechanisms.",An experiment that involves crossing over two different types of organisms to create a hybrid.,An experiment that involves crossing over two different types of cells to create a new cell.,An experiment that involves crossing over two different chemicals to create a new substance.,B,"The Prototype perspective is proposed as an alternative view to the Classical approach. While the Classical theory requires an all-or-nothing membership in a group, prototypes allow for more fuzzy boundaries and are characterized by attributes. Lakoff stresses that experience and cognition are critical to the function of language, and Labov's experiment found that the function that an artifact contributed to what people categorized it as. For example, a container holding mashed potatoes versus tea swayed people toward classifying them as a bowl and a cup, respectively. This experiment also illuminated the optimal dimensions of what the prototype for ""cup"" is.
+
+Multifactorial experiments
+Use of multifactorial experiments instead of the one-factor-at-a-time method.  These are efficient at evaluating the effects and possible interactions of several factors (independent variables). Analysis of experiment design is built on the foundation of the analysis of variance, a collection of models that partition the observed variance into components, according to what factors the experiment must estimate or test.
+
+ALSEP 
+The Apollo Lunar Surface Experiments Package was a suite of nuclear-powered experiments, flown on each landing mission after Apollo 11. This equipment was to be emplaced by the astronauts to continue functioning after the astronauts returned to Earth. For Apollo 17, the ALSEP experiments were a Heat Flow Experiment (HFE), to measure the rate of heat flow from the interior of the Moon, a Lunar Surface Gravimeter (LSG), to measure alterations in the lunar gravity field at the site, a Lunar Atmospheric Composition Experiment (LACE), to investigate what the lunar atmosphere is made up of, a Lunar Seismic Profiling Experiment (LSPE), to detect nearby seismic activity, and a Lunar Ejecta and Meteorites Experiment (LEME), to measure the velocity and energy of dust particles. Of these, only the HFE had been flown before; the others were new.",0.5,local,what is a crossover experiment?,1035791584
+1704,Select the most accurate option: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? among the listed options.,The atmosphere is a structure that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized frameworks and time-varying forcing from recurrent seasons.",The atmosphere is a framework that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic structure with no order or organization.,The atmosphere is a completely ordered framework with no chaos or randomness.,B,No match found.,0.0,live_api,select the most accurate option: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? among the listed options.,2452855239
+1705,Which of the following is correct? What is the Landau-Lifshitz-Gilbert equation used for in physics?,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,"Quantum ideal gas law 
+Since for atomic and molecular gases, the classical ideal gas law is well suited in most cases, let us describe the equation of state for elementary particles with mass  and spin  that takes into account quantum effects. In the following, the upper sign will always correspond to Fermi–Dirac statistics and the lower sign to Bose–Einstein statistics. The equation of state of such gases with  particles occupying a volume  with temperature  and pressure  is given byLandau, L. D., Lifshitz, E. M. (1980). Statistical physics: Part I (Vol. 5). page 162-166.
+
+The Landau–Stanyukovich–Zeldovich–Kompaneets equation of state (often abbreviated LSZK EOS) is a thermodynamic model used to describe the pressure–energy relationship of detonation products and high‑pressure reactive gases in computational hydrodynamics and explosive physics. It is named after prominent Soviet physicists Lev Landau & K. P. Stanyukovich (1945),[1] and Yakov Zeldovich & Alexander Kompaneyets (1960).[2] The LSZK EOS is primarily used to model detonation products rather than the unreacted solid explosive itself. It provides a smooth pressure–energy relationship suitable for numerical simulations of blast waves and shock propagation.
+
+Applications 
+ Composites of more than two functions 
+The chain rule can be applied to composites of more than two functions. To take the derivative of a composite of more than two functions, notice that the composite of , , and  (in that order) is the composite of  with . The chain rule states that to compute the derivative of , it is sufficient to compute the derivative of  and the derivative of . The derivative of  can be calculated directly, and the derivative of  can be calculated by applying the chain rule again.Landau, L. D., and E. M. Lifshitz. Mechanics. Course of Theoretical Physics, Vol. 1. Pergamon Press, 1960, §12.",0.6666666666666666,local,which of the following is correct? what is the landau-lifshitz-gilbert equation used for in physics?,1449352911
+1706,Pick the best possible answer: What is the variation between active and passive transport in cells?,Active transport and passive transport both require energy input from the cell to function.,"Passive transport is powered by the arithmetic sum of osmosis and an electric field, while active transport requires energy input from the cell.","Passive transport requires energy input from the cell, while active transport is powered by the arithmetic sum of osmosis and an electric field.",Active transport and passive transport are both powered by the arithmetic sum of osmosis and an electric field.,"Active transport is powered by the arithmetic sum of osmosis and an electric field, while passive transport requires energy input from the cell.",B,"CSF is produced by the choroid plexus in two steps. Firstly, a filtered form of plasma moves from fenestrated capillaries in the choroid plexus into an interstitial space, with movement guided by a difference in pressure between the blood in the capillaries and the interstitial fluid. This fluid then needs to pass through the epithelium cells lining the choroid plexus into the ventricles, an active process requiring the transport of sodium, potassium and chloride that draws water into CSF by creating osmotic pressure. Unlike blood passing from the capillaries into the choroid plexus, the epithelial cells lining the choroid plexus contain tight junctions between cells, which act to prevent most substances flowing freely into CSF. Cilia on the apical surfaces of the ependymal cells beat to help transport the CSF.",0.4,local,pick the best possible answer: what is the variation between active and passive transport in cells?,529437219
+1707,Which of the following is correct? Who was the first person to describe the pulmonary circulation structure? from the following choices.,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.
+
+It has been proposed that the text is composed of three distinct voices. The first belongs to Qohelet-as-prophet, the ""true voice of wisdom"", which speaks in the first person, recounting wisdom through his own experience. The second voice is of Qoheleth-the-king (of Jerusalem), who is more didactic and thus speaks primarily in second-person imperative statements. The third voice is that of the epilogist (i.e., the writer of the epilogue), who speaks proverbially in the third person. The epilogist is most identified in the book's first and final verses. Kyle R. Greenwood suggests that Ecclesiastes should be read as a dialogue between these voices following this structure.",0.7272727272727273,local,which of the following is correct? who was the first person to describe the pulmonary circulation structure? from the following choices.,3908894677
+1708,"Which of the following is correct? What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"The IEC Standard 60027-3:2002 defines the following quantities. The decibel (dB) is one-tenth of a bel: 1 dB = 0.1 B. The bel (B) is  ln(10) nepers: 1 B =  ln(10) Np. The neper is the change in the level of a root-power quantity when the root-power quantity changes by a factor of e, that is , thereby relating all of the units as nondimensional natural log of root-power-quantity ratios,  =  = .  Finally, the level of a quantity is the logarithm of the ratio of the value of that quantity to a reference value of the same kind of quantity.
+
+As it originated from a need to express power ratios, two principal types of scaling of the decibel are used to provide consistency depending on whether the scaling refers to ratios of power quantities or root-power quantities. When expressing a power ratio, the corresponding change in decibels is defined as ten times the logarithm with base 10 of that ratio. That is, a change in power by a factor of 10 corresponds to a 10 dB change in level. When expressing root-power ratios, a change in amplitude by a factor of 10 corresponds to a 20 dB change in level. The decibel scales differ by a factor of two, so that the related power and root-power levels change by the same value in linear systems, where power is proportional to the square of amplitude.
+
+Reporting large ratios 
+The logarithmic scale nature of the decibel means that a very large range of ratios can be represented by a convenient number. For example, 50 dB is easier to say than ""the two powers bear a 100,000 to 1 ratio"" or that ""one power is 10 the other"". Decibels express huge changes of a quantity with few digits of dB.",0.5,local,"which of the following is correct? what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.",2290726555
+1709,Pick the best possible answer: What is the relationship between the Hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,"For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with the same energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a higher energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different spin.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a different energy.","For every eigenstate of one Hamiltonian, its partner Hamiltonian has a corresponding eigenstate with a lower energy.",A,No match found.,0.0,live_api,pick the best possible answer: what is the relationship between the hamiltonians and eigenstates in supersymmetric quantum mechanics? carefully.,2862505631
+1710,Pick the best possible answer: What is the decay energy for the free neutron decay process?,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+Bound-state β decay 
+A very small minority of free neutron decays (about four per million) are ""two-body decays"": the proton, electron and antineutrino are produced, but the electron fails to gain the 13.6 eV energy necessary to escape the proton, and therefore simply remains bound to it, as a neutral hydrogen atom.An Overview Of Neutron Decay  J. Byrne in Quark-Mixing, CKM Unitarity (H. Abele and D. Mund, 2002), see p.XV In this type of beta decay, in essence all of the neutron decay energy is carried off by the antineutrino.
+
+One curiosity is why alpha particles, helium nuclei, should be preferentially emitted as opposed to other particles like a single proton or neutron or other atomic nuclei.These other decay modes, while possible, are extremely rare compared to alpha decay. Part of the reason is the high binding energy of the alpha particle, which means that its mass is less than the sum of the masses of two free protons and two free neutrons. This increases the disintegration energy. Computing the total disintegration energy given by the equation",0.6666666666666666,local,pick the best possible answer: what is the decay energy for the free neutron decay process?,4109839684
+1711,Determine the correct option: What is the relationship between the amplitude of a sound wave and its loudness? carefully.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.45454545454545453,local,determine the correct option: what is the relationship between the amplitude of a sound wave and its loudness? carefully.,692410289
+1712,"Determine the correct option: What is the throttling process, and why is it essential? from the following choices.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure raise in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is significant because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure drop in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature boost in domestic refrigerators. This process is significant because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is not essential because it is not used in the refrigeration cycle.",B,"Net neutrality, sometimes referred to as network neutrality, is the principle that Internet service providers (ISPs) must treat all Internet communications equally, offering users and online content providers consistent transfer rates regardless of content, website, platform, application, type of equipment, source address, destination address, or method of communication (i.e., without price discrimination). Net neutrality was advocated for in the 1990s by the presidential administration of Bill Clinton in the United States. Clinton signed the Telecommunications Act of 1996, an amendment to the Communications Act of 1934. In 2025, an American court ruled that Internet companies should not be regulated like utilities, which weakened net neutrality regulation and put the decision in the hands of the United States Congress and state legislatures.
+Supporters of net neutrality argue that it prevents ISPs from filtering Internet content without a court order, fosters freedom of speech and dem",0.0,live_api,"determine the correct option: what is the throttling process, and why is it essential? from the following choices.",617053706
+1713,Select the most accurate option: What are the Navier-Stokes equations? among the listed options.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.4,local,select the most accurate option: what are the navier-stokes equations? among the listed options.,2876109269
+1714,Which of the following is correct? What is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another? carefully.,Intrinsic semiconductors,Electrical impedance tomography,Quantum conduction,Carrier mobility,Variable range hopping,E,No match found.,0.0,live_api,which of the following is correct? what is the term used to describe the conduction that occurs in non-crystalline semiconductors by charges quantum tunnelling from one localised site to another? carefully.,2246658022
+1715,"Who proposed the concept of ""maximal acceleration""?",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Induced concept lattice 
+Binary relations have been described through their induced concept lattices:
+A concept  satisfies two properties:
+ The logical matrix of  is the outer product of logical vectors  logical vectors.
+  is maximal, not contained in any other outer product. Thus  is described as a non-enlargeable rectangle.
+
+The tangential acceleration of an object is the component of the acceleration which is in the same direction as the motion (or tangential velocity) of the object. When the velocity of the object does not change direction, this is called linear acceleration. Deceleration or retardation is the, on the other hand, is the component of the acceleration in the opposite (or antiparallel) direction to the tangential velocity. Radial acceleration or normal acceleration (or centripetal acceleration during circular motions) is that component of the acceleration which changes the direction of the object's velocity.
+
+The fact that A is Artinian simplifies the notion of a Jacobson radical; for an Artinian ring, the Jacobson radical of A is the intersection of all (two-sided) maximal ideals (in contrast, in general, a Jacobson radical is the intersection of all left maximal ideals or the intersection of all right maximal ideals.)",0.75,local,"who proposed the concept of ""maximal acceleration""?",782998424
+1716,Pick the best possible answer: What is explicit symmetry breaking in theoretical physics? from the following choices.,"Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that do not respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that do not respect the symmetry, usually in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the concept.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a concept by terms in its defining equations of motion that respect the symmetry, usually in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the concept.",B,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.18181818181818182,live_api,pick the best possible answer: what is explicit symmetry breaking in theoretical physics? from the following choices.,2798921254
+1717,Identify the correct statement: What is a regular polytope?,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.
+
+The cube is a Hanner polytope, because it can be constructed by using the Cartesian product of three line segments. Its dual polyhedron, the regular octahedron, is constructed by the direct sum of three line segments.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.8,local,identify the correct statement: what is a regular polytope?,3240438532
+1718,Choose the correct answer: What is the distinction between illuminance and luminance? among the listed options.,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,No match found.,0.0,live_api,choose the correct answer: what is the distinction between illuminance and luminance? among the listed options.,3571878829
+1719,Determine the correct option: What is the relationship between interstellar and cometary chemistry? based on the given context.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.45454545454545453,local,determine the correct option: what is the relationship between interstellar and cometary chemistry? based on the given context.,1110166456
+1720,Which of the following is correct? What is the origin of the radio emission observed from supernova remnants? among the listed options.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,"Antlia is home to the huge Antlia Supernova Remnant, one of the largest supernova remnants in the sky.
+
+On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+In April 2003, the Supernova Legacy Survey observed a type Ia supernova, designated SNLS-03D3bb, in a galaxy approximately 4 billion light years away. According to astronomers at the University of Toronto and elsewhere, the observations of this supernova are best explained by assuming that it arose from a white dwarf that had grown to twice the mass of the Sun before exploding.",0.3333333333333333,local,which of the following is correct? what is the origin of the radio emission observed from supernova remnants? among the listed options.,1633920061
+1721,Select the most accurate option: What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,No match found.,0.0,live_api,select the most accurate option: what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,624205747
+1722,Determine the correct option: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs? from the following choices.,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is significant for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is essential for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,No match found.,0.0,live_api,determine the correct option: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs? from the following choices.,2640484791
+1723,Select the most accurate option: What is a planetary structure? carefully.,A mechanism of planets that are all located in the same solar mechanism.,A mechanism of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star structure.,A structure of planets that are all located in the same galaxy.,A structure of planets that are all made of gas.,C,"The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy. The Hubble Space Telescope is named after astronomer Edwin Hubble and is one of NASA's Great Observatories. The Space Telescope Science Institute (STScI) selects Hubble's targets and processes the resulting data, while the Goddard Space Flight Center (GSFC) controls the spacecraft.
+Hubble features a 2.4 m (7 ft 10 in) mirror, and its five main instruments observe in the ultraviolet, visible, and near-infrared regions of the electromagnetic spectrum. Hubble's orbit outside the distortion of Earth's atmosphere allows it to capture extremely high-resolution images with substantially lower background light than ground-based telescopes. It has recorded some of the most detailed visible light",0.14285714285714285,live_api,select the most accurate option: what is a planetary structure? carefully.,1861863524
+1724,Select the most accurate option: What is bollard pull primarily used for measuring? based on the given context.,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,"Concrete is a composite material composed of aggregate bound together with a fluid cement that cures to a solid. It is the second-most-used substance (after water), the most widely used building material, and the most-manufactured material in the world.
+When aggregate is mixed with dry Portland cement and water, the mixture forms a fluid slurry that can be poured and molded into shape. The cement reacts with the water through a process called hydration, which hardens it after several hours to form a solid matrix that binds the materials together into a durable stone-like material with various uses. This time allows concrete to not only be cast in forms, but also to have a variety of tooled processes performed. The hydration process is exothermic, which means that ambient temperature plays a significant role in how long it takes concrete to set. Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical properties of the wet mix, delay",0.16666666666666666,live_api,select the most accurate option: what is bollard pull primarily used for measuring? based on the given context.,1563786222
+1725,Determine the correct option: What are the two main factors that cause resistance in a metal?,"The amount of resistance in a metal is mainly caused by the temperature and the pressure applied to the metal. Higher temperatures cause bigger vibrations, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the temperature and the purity of the metal. Higher temperatures cause bigger vibrations, and a mixture of different ions acts as an irregularity.","The amount of resistance in a metal is mainly caused by the temperature and the thickness of the metal. Higher temperatures cause bigger vibrations, and thicker metals have more irregularities, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the amount of pressure applied to the metal. A mixture of different ions acts as an irregularity, and pressure causes the metal to become more compact, leading to more resistance.","The amount of resistance in a metal is mainly caused by the purity of the metal and the thickness of the metal. A mixture of different ions acts as an irregularity, and thicker metals have more irregularities, leading to more resistance.",B,"The third mode is parapatric speciation. This is similar to peripatric speciation in that a small population enters a new habitat, but differs in that there is no physical separation between these two populations. Instead, speciation results from the evolution of mechanisms that reduce gene flow between the two populations. Generally this occurs when there has been a drastic change in the environment within the parental species' habitat. One example is the grass Anthoxanthum odoratum, which can undergo parapatric speciation in response to localised metal pollution from mines. Here, plants evolve that have resistance to high levels of metals in the soil. Selection against interbreeding with the metal-sensitive parental population produced a gradual change in the flowering time of the metal-resistant plants, which eventually produced complete reproductive isolation. Selection against hybrids between the two populations may cause reinforcement, which is the evolution of traits that promote mating within a species, as well as character displacement, which is when two species become more distinct in appearance.
+
+In medicine, the etiology of an illness or condition refers to the frequent studies to determine one or more factors that come together to cause it. Relatedly, when disease is widespread, epidemiological studies investigate what associated factors, such as location, sex, exposure to chemicals, and many others, make a population more or less likely to have an illness, condition, or disease, thus helping determine its etiology. Sometimes determining etiology is an imprecise process. In the past, the etiology of a common sailor's disease, scurvy, was long unknown. When large, ocean-going ships were built, sailors began to put to sea for long periods of time, and often lacked fresh fruit and vegetables. Without knowing the precise cause, Captain James Cook suspected scurvy was caused by the lack of vegetables in the diet. Based on his suspicion, he forced his crew to eat sauerkraut, a cabbage preparation, every day, and based upon the positive outcomes, he inferred that it prevented scurvy, even though he did not know precisely why. It took about another two hundred years to discover the precise etiology: the lack of vitamin C in a sailor's diet.
+
+In the original radiosity method (first proposed in 1984) now called classical radiosity, surfaces and lights in the scene are split into pieces called patches, a process called meshing (this step makes it a finite element method). The rendering code must then determine what fraction of the light being emitted or diffusely reflected (scattered) by each patch is received by each other patch. These fractions are called form factors or view factors (first used in engineering to model radiative heat transfer). The form factors are multiplied by the albedo of the receiving surface and put in a matrix. The lighting in the scene can then be expressed as a matrix equation (or equivalently a system of linear equations) that can be solved by methods from linear algebra.",0.7,local,determine the correct option: what are the two main factors that cause resistance in a metal?,3409446667
+1726,What is the fate of a carbocation formed in crystalline naphthalene?,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,"BPM 37093 is a white dwarf star whose carbon atoms are thought to have formed a crystalline structure. Since diamond also consists of carbon arranged in a crystalline lattice (though of a different configuration), scientists have nicknamed this star ""Lucy"" after the Beatles song ""Lucy in the Sky with Diamonds.""
+
+Estonia is located on the northwestern part of the East European Platform, bordering the Fennoscandian Shield. Estonia's bedrock consists of two main layers: the crystalline basement and the sedimentary cover. These are further classified into three distinct geological complexes. The crystalline basement, composed of granites, gneisses, and other crystalline rocks, formed during the Proterozoic. This is overlain by a sedimentary cover of Paleozoic rocks, including limestones and sandstones. Above this, a quaternary surface layer is mainly composed of unconsolidated sediments such as gravels, sands, and clays, which formed in the Cenozoic.
+Fauna
+
+The counterpart of elimination is an addition where double or triple bonds are converted into single bonds. Similar to substitution reactions, there are several types of additions distinguished by the type of the attacking particle. For example, in the electrophilic addition of hydrogen bromide, an electrophile (proton) attacks the double bond forming a carbocation, which then reacts with the nucleophile (bromine). The carbocation can be formed on either side of the double bond depending on the groups attached to its ends, and the preferred configuration can be predicted with the Markovnikov's rule.Wiberg, pp. 950, 1602 This rule states that ""In the heterolytic addition of a polar molecule to an alkene or alkyne, the more electronegative (nucleophilic) atom (or part) of the polar molecule becomes attached to the carbon atom bearing the smaller number of hydrogen atoms.""",0.6,local,what is the fate of a carbocation formed in crystalline naphthalene?,1012907015
+1727,Determine the correct option: What happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation? from the following choices.,It will change its internal state only if it is composed of a single substructure and has internal walls.,It will change its internal state only if it is composed of several substructures separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single substructure.,D,No match found.,0.0,live_api,determine the correct option: what happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation? from the following choices.,3862882018
+1728,Pick the best possible answer: What is the interstellar medium (ISM)?,"The matter and radiation that exist in the space between the star structures in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.","The matter and radiation that exist in the space between stars in a galaxy, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding interplanetary space.","The matter and radiation that exist in the space between galaxies, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills intergalactic space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist in the space between planets in a solar mechanism, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interplanetary space and blends smoothly into the surrounding interstellar space.","The matter and radiation that exist within a star, including gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills the star and blends smoothly into the surrounding interstellar space.",A,"Origin and current state 
+Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m3 (mostly protons and electrons). Within a galaxy such as the Milky Way, particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 105 to 109 atoms/m3. The Sun is believed to be inside the Local Bubble, so the density in the solar neighborhood is only about 103 atoms/m3. Stars form from dense clouds in the ISM, and the evolutionary processes of stars result in the steady enrichment of the ISM with elements more massive than hydrogen and helium.
+
+Interstellar medium
+The cyanide radical •CN has been identified in interstellar space. Cyanogen, , is used to measure the temperature of interstellar gas clouds.",0.42857142857142855,local,pick the best possible answer: what is the interstellar medium (ism)?,4043691652
+1729,Determine the correct option: What is the role of the Higgs boson in the Standard Model? from the following choices.,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.4,local,determine the correct option: what is the role of the higgs boson in the standard model? from the following choices.,2371745835
+1730,"Determine the correct option: What is the relationship between mass, force, and acceleration, according to Sir Isaac Newton's laws of motion? among the listed options.","Mass is a property that determines the weight of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of one newton.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at ten meters per second per second when acted upon by a force of ten newtons.","Mass is an inertial property that determines an object's tendency to remain at constant velocity unless acted upon by an outside force. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of one newton.","Mass is a property that determines the size of an object. According to Newton's laws of motion and the formula F = ma, an object with a mass of one kilogram accelerates at one meter per second per second when acted upon by a force of ten newtons.",D,"Other forms
+An object moving in a circular motion—such as a satellite orbiting the Earth—is accelerating due to the change of direction of motion, although its speed may be constant. In this case it is said to be undergoing centripetal (directed towards the center) acceleration.
+Proper acceleration, the acceleration of a body relative to a free-fall condition, is measured by an instrument called an accelerometer. Newton's second law is normally applied in an inertial reference frame. In a reference frame accelerating with acceleration  (in one dimension), Newton's laws can still be used by introducing an inertial force (fictitious force)  on a mass , opposite the acceleration of the frame. This accounts for the tendency of the mass to maintain its inertial motion—to stay ""as is,"" at rest or moving at constant velocity—while the frame accelerates. One example is that a person in an elevator feels heavier or lighter as the elevator accelerates or decelerates. If  is known, measurement of the supporting force on the mass can be used to infer the acceleration; this is the principle of a mechanical accelerometer. In general relativity, gravity and inertial acceleration may be locally indistinguishable (see General relativity).
+
+By Newton's second law of motion, the average acceleration is related to the average force  on a particle of mass  by,
+This means that a measurement of the average acceleration is also a measurement of the average force (also known as impulse .)
+
+This acceleration and the mass of the particle determine the necessary centripetal force, directed toward the centre of the circle, as the net force acting on this particle to keep it in this uniform circular motion. The so-called 'centrifugal force', appearing to act outward on the body, is a so-called pseudo force experienced in the frame of reference of the body in circular motion, due to the body's linear momentum, a vector tangent to the circle of motion.",0.4444444444444444,local,"determine the correct option: what is the relationship between mass, force, and acceleration, according to sir isaac newton's laws of motion? among the listed options.",697477474
+1731,What is the Liouville density?,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"In 1842, Joseph Liouville began studying Galois's unpublished papers and acknowledged their value in 1843. It is not clear what happened in the ten years between 1832 and 1842 nor what eventually inspired Liouville to begin reading Galois's papers. Jesper Lützen explores this subject at some length in Chapter XIV Galois Theory of his book about Joseph Liouville without reaching any definitive conclusions.
+
+Completely multiplicative functions 
+ λ(n) – Liouville function 
+λ(n), the Liouville function, is  defined by
+
+where λ is the Liouville function.
+       Hardy & Wright, Thm. 296
+         Möbius inversion",0.5,local,what is the liouville density?,2287222852
+1732,Which of the following is correct? Which of the following is an accurate definition of dynamic scaling in self-similar frameworks? carefully.,"Dynamic scaling refers to the evolution of self-similar structures, where data obtained from snapshots at fixed times exhibits similarity to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the non-evolution of self-similar structures, where data obtained from snapshots at fixed times is similar to the respective data taken from snapshots of any earlier or later time. This similarity is tested by a certain time-dependent stochastic variable x.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the non-evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is dissimilar to the respective data taken from snapshots of any earlier or later time. This dissimilarity is tested by a certain time-independent stochastic variable y.","Dynamic scaling refers to the evolution of self-similar mechanisms, where data obtained from snapshots at fixed times is independent of the respective data taken from snapshots of any earlier or later time. This independence is tested by a certain time-dependent stochastic variable z.",A,"Weierstrass and Jordan definitions (epsilon–delta) of continuous functions
+Explicitly including the definition of the limit of a function, we obtain a self-contained definition: Given a function  as above and an element  of the domain ,  is said to be continuous at the point  when the following holds: For any positive real number  however small, there exists some positive real number  such that for all  in the domain of  with  the value of  satisfies
+
+Continuity at a point 
+The translation in the language of neighborhoods of the -definition of continuity leads to the following definition of the continuity at a point:
+
+In The Rise of the Cults, Martin gave the following definition of a cult:",0.2727272727272727,local,which of the following is correct? which of the following is an accurate definition of dynamic scaling in self-similar frameworks? carefully.,3967166648
+1733,Pick the best possible answer: What is the Evans balance? from the following choices.,"The Evans balance is a structure used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a structure used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a structure used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a mechanism used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a mechanism used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"Non-deterministic computation
+In a non-deterministic model of computation, such as non-deterministic Turing machines, some choices may be made at some steps of the computation. In complexity theory, one considers all possible choices simultaneously, and the non-deterministic time complexity is the time needed, when the best choices are always made. In other words, one considers that the computation is done simultaneously on as many (identical) processors as needed, and the non-deterministic computation time is the time spent by the first processor that finishes the computation. This parallelism is partly amenable to quantum computing via superposed entangled states in running specific quantum algorithms, like e.g. Shor's algorithm for finding the prime factors of an integer.",0.375,local,pick the best possible answer: what is the evans balance? from the following choices.,2184795100
+1734,Select the most accurate option: What is the butterfly effect? carefully.,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the distinction between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.
+
+Differentiating types of butterfly effects 
+The concept of the butterfly effect encompasses several phenomena. The two kinds of butterfly effects, including the sensitive dependence on initial conditions, and the ability of a tiny perturbation to create an organized circulation at large distances, are not exactly the same. In Palmer et al., a new type of butterfly effect is introduced, highlighting the potential impact of small-scale processes on finite predictability within the Lorenz 1969 model. Additionally, the identification of ill-conditioned aspects of the Lorenz 1969 model points to a practical form of finite predictability. These two distinct mechanisms suggesting finite predictability in the Lorenz 1969 model are collectively referred to as the third kind of butterfly effect. The authors in  have considered Palmer et al.'s suggestions and have aimed to present their perspective without raising specific contentions.",0.2857142857142857,local,select the most accurate option: what is the butterfly effect? carefully.,973251782
+1735,Select the most accurate option: What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth? carefully.,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,select the most accurate option: what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth? carefully.,3175701549
+1736,Which of the following is correct? What is the metallicity of Kapteyn's star estimated to be?,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.
+
+Planets in the habitable zones of stars with low metallicity are more habitable for complex life on land than high metallicity stars because the stellar spectrum of high metallicity stars is less likely to cause the formation of ozone thus enabling more ultraviolet rays to reach the planet's surface.",0.4444444444444444,local,which of the following is correct? what is the metallicity of kapteyn's star estimated to be?,3641373238
+1737,Determine the correct option: What is the main advantage of ferroelectric memristors? from the following choices.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:",0.3333333333333333,local,determine the correct option: what is the main advantage of ferroelectric memristors? from the following choices.,1776470277
+1738,"Pick the best possible answer: What is the throttling process, and why is it significant? carefully.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure boost in domestic refrigerators. This process is key because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is essential because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the pressure drop in domestic refrigerators. This process is essential because it is at the heart of the refrigeration cycle.","The throttling process is a steady flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature raise in domestic refrigerators. This process is essential because it is at the heart of the refrigeration cycle.","The throttling process is a steady adiabatic flow of a fluid through a flow resistance, such as a valve or porous plug, and is responsible for the temperature drop in domestic refrigerators. This process is not key because it is not used in the refrigeration cycle.",B,"Net neutrality, sometimes referred to as network neutrality, is the principle that Internet service providers (ISPs) must treat all Internet communications equally, offering users and online content providers consistent transfer rates regardless of content, website, platform, application, type of equipment, source address, destination address, or method of communication (i.e., without price discrimination). Net neutrality was advocated for in the 1990s by the presidential administration of Bill Clinton in the United States. Clinton signed the Telecommunications Act of 1996, an amendment to the Communications Act of 1934. In 2025, an American court ruled that Internet companies should not be regulated like utilities, which weakened net neutrality regulation and put the decision in the hands of the United States Congress and state legislatures.
+Supporters of net neutrality argue that it prevents ISPs from filtering Internet content without a court order, fosters freedom of speech and dem",0.0,live_api,"pick the best possible answer: what is the throttling process, and why is it significant? carefully.",2789077911
+1739,"Choose the correct answer: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"choose the correct answer: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? based on the given context.",2637726454
+1740,Choose the correct answer: What is the SI base unit of time and how is it defined? among the listed options.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.",0.45454545454545453,local,choose the correct answer: what is the si base unit of time and how is it defined? among the listed options.,547061499
+1741,Which of the following is correct? Which mathematical function is commonly used to characterize linear time-invariant frameworks? among the listed options.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,"This glossary of computer science is a list of definitions of terms and concepts used in computer science, its sub-disciplines, and related fields, including terms relevant to software, data science, and computer programming.",0.06666666666666667,live_api,which of the following is correct? which mathematical function is commonly used to characterize linear time-invariant frameworks? among the listed options.,3398184220
+1742,What is the difference between redshift due to the expansion of the universe and Doppler redshift?,"Redshift due to the expansion of the universe depends on the rate of change of a(t) at the times of emission or absorption, while Doppler redshift depends on the increase of a(t) in the whole period from emission to absorption.","Redshift due to the expansion of the universe depends on the local velocity of the object emitting the light, while Doppler redshift depends on the cosmological model chosen to describe the expansion of the universe.",There is no difference between redshift due to the expansion of the universe and Doppler redshift.,"Redshift due to the expansion of the universe depends on the cosmological model chosen to describe the expansion of the universe, while Doppler redshift depends on the local velocity of the object emitting the light.","Redshift due to the expansion of the universe depends on the increase of a(t) in the whole period from emission to absorption, while Doppler redshift depends on the rate of change of a(t) at the times of emission or absorption.",D,"The relationship between the expansion of the universe and the Doppler effect is not simply caused by the source moving away from the observer. In cosmology, the redshift of expansion is considered separate from redshifts due to gravity or Doppler motion.
+
+The region of the spectrum where electromagnetic radiation is observed may differ from the region it was emitted in due to relative velocity of the source and observer, (the Doppler shift), relative gravitational potential (gravitational redshift), or expansion of the universe (cosmological redshift). For example, the cosmic microwave background, relic blackbody radiation  from the era of recombination, started out at energies around 1eV, but as has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers on Earth.
+
+The theory requires the relation  to hold at all times, where  is the proper distance,  is the recessional velocity, and , , and  vary as the universe expands (hence we write  to denote the present-day Hubble ""constant""). For distances much smaller than the size of the observable universe, the Hubble redshift can be thought of as the Doppler shift corresponding to the recession velocity . For distances comparable to the size of the observable universe, the attribution of the cosmological redshift becomes more ambiguous, although its interpretation as a kinematic Doppler shift remains the most natural one.",0.8571428571428571,local,what is the difference between redshift due to the expansion of the universe and doppler redshift?,3221480920
+1743,Which of the following is correct? What is the SI unit of the physical quantity m/Q?,Meter per second,Pascal per second,Kilogram per coulomb,Newton per meter,Joule per second,C,"The SI unit of quantity of electric charge is the coulomb (symbol: C). The coulomb is defined as the quantity of charge that passes through the cross section of an electrical conductor carrying one ampere for one second. This unit was proposed in 1946 and ratified in 1948. The lowercase symbol q is often used to denote a quantity of electric charge. The quantity of electric charge can be directly measured with an electrometer, or indirectly measured with a ballistic galvanometer.
+
+where
+  is the cross section of a two-particle collision (SI unit: m2),
+  is the mean free path between collisions (SI unit: m),
+  is the number density of the target particles (SI unit: m−3).
+
+Here  is the finite angular size of the detector (SI unit: sr),  is the number density of the target particles (SI unit: m−3), and  is the thickness of the stationary target (SI unit: m). This formula assumes that the target is thin enough that each beam particle will interact with at most one target particle.",0.5555555555555556,local,which of the following is correct? what is the si unit of the physical quantity m/q?,950440461
+1744,Which of the following is correct? What is the SI base unit of time and how is it defined? from the following choices.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols: 
+ time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
+The symbols are by convention usually written in roman sans serif typeface. Mathematically, the dimension of the quantity  is given by",0.7777777777777778,local,which of the following is correct? what is the si base unit of time and how is it defined? from the following choices.,4082994722
+1745,Choose the correct answer: What is indirect photophoresis? among the listed options.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,choose the correct answer: what is indirect photophoresis? among the listed options.,2392168694
+1746,What is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or Copernican principles that can be used to address specific issues in the Lambda-CDM model and distinguish between current models and other possible models?,"The Copernican principle, which proposes that Earth, the Solar System, and the Milky Way are not at the centre of the universe, but instead, the universe is expanding equally in all directions. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","Inhomogeneous cosmology, which states that the universe is entirely homogeneous and isotropic, directly proportional to the density of matter and radiation. This model proposes that everything in the universe is completely uniform, but it does not match observations.","Inhomogeneous cosmology, which models the universe as an extremely large, low-density void, instead of using the concept of dark energy. According to the model, this theory can match the observed accelerating universe and cosmological constant, but it contradicts the Copernican principle.","The cosmological principle, which proposes that Earth, the Solar System, and the Milky Way are at the centre of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","The principle of dark energy, which proposes that a new form of energy, not previously detected, is responsible for the acceleration of the expansion of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.",C,"Physics without the principle
+The standard model of cosmology, the Lambda-CDM model, assumes the Copernican principle and the more general cosmological principle. Some cosmologists and theoretical physicists have created models without the cosmological or Copernican principles to constrain the values of observational results, to address specific known issues in the Lambda-CDM model, and to propose tests to distinguish between current models and other possible models.
+
+Tests of the principle
+The Copernican principle has never been proven, and in the most general sense cannot be proven, but it is implicit in many modern theories of physics. Cosmological models are often derived with reference to the cosmological principle, slightly more general than the Copernican principle, and many tests of these models can be considered tests of the Copernican principle.",0.8148148148148148,local,what is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or copernican principles that can be used to address specific issues in the lambda-cdm model and distinguish between current models and other possible models?,326851472
+1747,Identify the correct statement: What is reciprocal length or inverse length? from the following choices.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.4444444444444444,local,identify the correct statement: what is reciprocal length or inverse length? from the following choices.,903317320
+1748,Pick the best possible answer: What is the metallicity of Kapteyn's star estimated to be?,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.",0.4,local,pick the best possible answer: what is the metallicity of kapteyn's star estimated to be?,365407927
+1749,What is the second law of thermodynamics?,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic system is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated systems left to spontaneous evolution can decrease, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic system and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"External links 
+ Chemical Thermodynamics - University of North Carolina
+ Chemical energetics (Introduction to thermodynamics and the First Law)
+ Thermodynamics of chemical equilibrium (Entropy, Second Law and free energy)
+
+Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.
+
+Entropy is central to the second law of thermodynamics, which states that the entropy of an isolated system left to spontaneous evolution cannot decrease with time. As a result, isolated systems evolve toward thermodynamic equilibrium, where the entropy is highest. ""High"" entropy means that energy is more disordered or dispersed, while ""low"" entropy means that energy is more ordered or concentrated. A consequence of the second law of thermodynamics is that certain processes are irreversible.",1.0,local,what is the second law of thermodynamics?,64700381
+1750,What is an order parameter?,An order parameter is a measure of the temperature of a physical system.,An order parameter is a measure of the gravitational force in a physical system.,An order parameter is a measure of the magnetic field strength in a physical system.,An order parameter is a measure of the degree of symmetry breaking in a physical system.,An order parameter is a measure of the rotational symmetry in a physical system.,D,"Where  is the first order virial parameter and it depends on the temperature,  is the second order virial parameter of Morse oscillator and it depends on the  parameters of Morse oscillator in addition to the absolute temperature.  is the fractional volume of the system.
+
+In 1963 R. Creighton Buck based an intuitive two-variable with parameter order reversed variant  on the hyperoperation sequence:
+
+There is no need for higher order derivatives in the equation, nor for the parameter t in v(t,x), because these can be eliminated by considering systems of higher dimensions.",1.0,local,what is an order parameter?,3576586163
+1751,Which of the following is correct? What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? carefully.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+Membranes
+Cholesterol is present in varying degrees in all animal cell membranes but is absent in prokaryotes. It is required to build and maintain membranes and modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group of each cholesterol molecule interacts with water molecules surrounding the membrane, as do the polar heads of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty-acid chain of the other lipids. Through the interaction with the phospholipid fatty-acid chains, cholesterol increases membrane packing, which both alters membrane fluidity and maintains membrane integrity so that animal cells do not need to build cell walls (like plants and most bacteria). The membrane remains stable and durable without being rigid, allowing animal cells to change shape and animals to move.
+
+All chloroplasts have at least three membrane systems—the outer chloroplast membrane, the inner chloroplast membrane, and the thylakoid system. The two innermost lipid-bilayer membranes that surround all chloroplasts correspond to the outer and inner membranes of the ancestral cyanobacterium's gram negative cell wall, and not the phagosomal membrane from the host, which was probably lost. Chloroplasts that are the product of secondary endosymbiosis may have additional membranes surrounding these three. Inside the outer and inner chloroplast membranes is the chloroplast stroma, a semi-gel-like fluid that makes up much of a chloroplast's volume, and in which the thylakoid system floats.",0.46153846153846156,local,which of the following is correct? what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? carefully.,1114660550
+1752,Select the most accurate option: What is the relevant type of coherence for the Young's double-slit interferometer? among the listed options.,Visibility,Coherence time,Spatial coherence,Coherence length,Diameter of the coherence area (Ac),E,"If waves are emitted from an extended source, this can lead to incoherence in the transversal direction. When looking at a cross section of a beam of light, the length over which the phase is correlated is called the transverse coherence length. In the case of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting pattern on a screen would look like two single-slit diffraction patterns.",0.3333333333333333,local,select the most accurate option: what is the relevant type of coherence for the young's double-slit interferometer? among the listed options.,1178404160
+1753,Select the most accurate option: What is the Carnot engine?,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is an ideal heat engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real heat engine that operates in the limiting mode of extreme speed known as dynamic. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a theoretical engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical minimum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,The Carnot engine is a real engine that operates in the limiting mode of extreme slowness known as quasi-static. It represents the theoretical maximum efficiency of a heat engine operating between any two given thermal or heat reservoirs at different temperatures.,B,"A Carnot heat engineIn French, Carnot uses machine à feu, which Thurston translates as heat-engine or steam-engine. In a footnote, Carnot distinguishes the steam-engine (machine à vapeur) from the heat-engine in general. (Carnot, 1824, p. 5 and Carnot, 1890, p. 43) is a theoretical heat engine that operates on the Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded by Benoît Paul Émile Clapeyron in 1834 and mathematically explored by Rudolf Clausius in 1857, work that led to the fundamental thermodynamic concept of entropy. The Carnot engine is the most efficient heat engine which is theoretically possible. The efficiency depends only upon the absolute temperatures of the hot and cold heat reservoirs between which it operates.
+
+where  is the efficiency of the real engine, and  is the efficiency of the Carnot engine working between the same two reservoirs at the temperatures  and . For the Carnot engine, the entire process is 'reversible', and Equation () is an equality. Hence, the efficiency of the real engine is always less than the ideal Carnot engine.
+
+Carnot cycle 
+The concept of entropy arose from Rudolf Clausius's study of the Carnot cycle which is a thermodynamic cycle performed by a Carnot heat engine as a reversible heat engine. In a Carnot cycle, the heat  is transferred from a hot reservoir to a working gas at the constant temperature  during isothermal expansion stage and the heat  is transferred from a working gas to a cold reservoir at the constant temperature  during isothermal compression stage. According to Carnot's theorem, a heat engine with two thermal reservoirs can produce a work  if and only if there is a temperature difference between reservoirs. Originally, Carnot did not distinguish between heats  and , as he assumed caloric theory to be valid and hence that the total heat in the system was conserved. But in fact, the magnitude of heat  is greater than the magnitude of heat . Through the efforts of Clausius and Kelvin, the work  done by a reversible heat engine was found to be the product of the Carnot efficiency (i.e., the efficiency of all reversible heat engines with the same pair of thermal reservoirs) and the heat  absorbed by a working body of the engine during isothermal expansion:To derive the Carnot efficiency Kelvin had to evaluate the ratio of the work output to the heat absorbed during the isothermal expansion with the help of the Carnot–Clapeyron equation, which contained an unknown function called the Carnot function. The possibility that the Carnot function could be the temperature as measured from a zero point of temperature was suggested by Joule in a letter to Kelvin. This allowed Kelvin to establish his absolute temperature scale.",0.5,local,select the most accurate option: what is the carnot engine?,3767716829
+1754,Which of the following is correct? What is the metallicity of Kapteyn's star estimated to be? carefully.,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.
+
+Planets in the habitable zones of stars with low metallicity are more habitable for complex life on land than high metallicity stars because the stellar spectrum of high metallicity stars is less likely to cause the formation of ozone thus enabling more ultraviolet rays to reach the planet's surface.",0.4,local,which of the following is correct? what is the metallicity of kapteyn's star estimated to be? carefully.,668069360
+1755,Select the most accurate option: What is the American Petroleum Institute (API) gravity? among the listed options.,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,"Western Canadian Select (WCS)  is a heavy sour blend of crude oil that is one of North America's largest heavy crude oil streams  and, historically, its cheapest. It was established in December 2004 as a new heavy oil stream by EnCana (now Cenovus), Canadian Natural Resources, Petro-Canada (now Suncor) and Talisman Energy (now Repsol Oil & Gas Canada).  It is composed mostly of bitumen blended with sweet synthetic and condensate diluents and 21 existing streams of both conventional and unconventional Alberta heavy crude oils at the large Husky Midstream General Partnership terminal in Hardisty, Alberta. Western Canadian Select—the benchmark for heavy, acidic (TAN <1.1) crudes—is one of many petroleum products from the Western Canadian Sedimentary Basin oil sands. Calgary-based Husky Energy, now a subsidiary of Cenovus, had joined the initial four founders in 2015.
+Western Canadian Select (WCS) is the benchmark price for western Canadian crude blends. The price of other Canadian crude b",0.16666666666666666,live_api,select the most accurate option: what is the american petroleum institute (api) gravity? among the listed options.,1268267836
+1756,Select the most accurate option: What is the definition of an improper rotation? based on the given context.,"An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both, and a third plane.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane perpendicular to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or neither.","An improper rotation is the combination of a rotation about an axis and reflection in a plane parallel to that axis, or inversion about a point on the axis. The order of the rotation and reflection does not matter, and the symmetry elements for improper rotation are the rotation axis, and either the mirror plane, the inversion point, or both.",B,"An arithmetic calendar is one that is based on a strict set of rules; an example is the current Jewish calendar. Such a calendar is also referred to as a rule-based calendar. The advantage of such a calendar is the ease of calculating when a particular date occurs. The disadvantage is imperfect accuracy. Furthermore, even if the calendar is very accurate, its accuracy diminishes slowly over time, owing to changes in Earth's rotation. This limits the lifetime of an accurate arithmetic calendar to a few thousand years. After then, the rules would need to be modified from observations made since the invention of the calendar.
+
+One standard definition is that an angle is a figure consisting of two rays which lie in a plane and share a common endpoint. Alternatively, given such a figure, an angle might be defined as: the opening between the rays; the area of the plane that lies between the rays; or the amount of rotation about the vertex of one ray to the other.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6,local,select the most accurate option: what is the definition of an improper rotation? based on the given context.,3875944839
+1757,What is a planetary system?,A system of planets that are all located in the same solar system.,A system of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star system.,A system of planets that are all located in the same galaxy.,A system of planets that are all made of gas.,C,"In astronomy, a double planet (also binary planet) is a binary satellite system where both objects are planets, or planetary-mass objects, and whose barycenter is external to both planetary bodies.
+
+Planetary Nebulae 
+ The Stingray Nebula (Hen 3–1357), the youngest known planetary nebula as of 2010, formed in Ara; the light from its formation was first observable around 1987.
+ NGC 6326.  A planetary nebula that might have a binary system at its center.
+
+Multiple claims have been made that 61 Cygni might have a planetary system. Kaj Strand of the Sproul Observatory in 1942 observed tiny but systematic variations in the orbital motions of 61 Cygni A and B, suggesting that a third body of about 16 Jupiter masses must be orbiting 61 Cygni A. Multiple further claims were made, but more recent observations have yet to find confirmation. More information at 61 Cygni:Claims of a planetary system.",1.0,local,what is a planetary system?,365387466
+1758,Identify the correct statement: What is the propagation constant in sinusoidal waves? from the following choices.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"In the absence of obstacles, the Huygens's principle alone predicts wavefront propagation. When some of the secondary waves are blocked by an obstacle, the remainder will create both wavefront propagation in the unblocked direction and waves behind the obstacle which form the diffraction pattern.
+
+The central stage in the acoustical process is wave propagation. This falls within the domain of physical acoustics. In fluids, sound propagates primarily as a pressure wave. In solids, mechanical waves can take many forms including longitudinal waves, transverse waves and surface waves.
+
+If the permittivity and permeability of the medium is constant for different frequency EM waves, this is called a non-dispersive medium. In this case all EM wave frequencies would travel at the same velocity, and the waveshape stays constant as it travels. However in real matter  and  typically vary with frequency, this is called a dispersive medium. In dispersive media different spectral bands have different propagation characteristics, and an arbitrary wave changes shape as it travels through the medium.",0.3333333333333333,local,identify the correct statement: what is the propagation constant in sinusoidal waves? from the following choices.,1121748601
+1759,Pick the best possible answer: What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching?,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,pick the best possible answer: what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching?,4133738496
+1760,Identify the correct statement: What is the interpretation of supersymmetry in stochastic supersymmetric principle? among the listed options.,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,No match found.,0.0,live_api,identify the correct statement: what is the interpretation of supersymmetry in stochastic supersymmetric principle? among the listed options.,4276491212
+1761,Identify the correct statement: What are permutation-inversion groups? from the following choices.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of identical nuclei or rotation with respect to the center of mass, or a combination of both.",Permutation-inversion groups are groups of symmetry operations that are energetically feasible rotations of the entire molecule about the C3 axis.,Permutation-inversion groups are groups of symmetry operations that are energetically feasible inversions of the entire molecule about the C3 axis.,"Permutation-inversion groups are groups of symmetry operations that are energetically feasible permutations of identical nuclei or inversion with respect to the center of mass, or a combination of both.",E,This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.,0.0,live_api,identify the correct statement: what are permutation-inversion groups? from the following choices.,3944561002
+1762,Identify the correct statement: What does Earnshaw's theorem state? carefully.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,No clear summary context available.,0.0,live_api,identify the correct statement: what does earnshaw's theorem state? carefully.,2987179437
+1763,Which of the following is correct? What is the American Petroleum Institute (API) gravity? from the following choices.,API gravity is a measure of how heavy or light a petroleum liquid is compared to water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the viscosity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the temperature at which a petroleum liquid freezes. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of how much petroleum liquid is present in a given volume of water. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,API gravity is a measure of the acidity or alkalinity of a petroleum liquid. It is an inverse measure of a petroleum liquid's density relative to that of water and is graduated in degrees on a hydrometer instrument.,A,"Unlike the trumpet, which has a cylindrical bore up to the bell section, the tubing of the cornet has a mostly conical bore, starting very narrow at the mouthpiece and gradually widening towards the bell. Cornets following the 1913 patent of E. A. Couturier can have a continuously conical bore. This shape is primarily responsible for the instrument's characteristic warm, mellow tone, which can be distinguished from the more penetrating sound of the trumpet. The conical bore of the cornet also makes it more agile than the trumpet when playing fast passages, but correct pitching is often less assured. The cornet is often preferred for young beginners as it is easier to hold, with its centre of gravity much closer to the player.
+
+In 1996, the production of Alpha chips was licensed to Samsung Electronics Company. Following the purchase of Digital by Compaq the majority of the Alpha products were placed with API NetWorks, Inc. (formerly Alpha Processor Inc.), a private company funded by Samsung and Compaq. In October 2001, Microway became the exclusive sales and service provider of API NetWorks' Alpha-based product line.
+
+Prior to 1918, these five founding engineering societies:
+ American Institute of Electrical Engineers (AIEE, now IEEE)
+ American Society of Mechanical Engineers (ASME)
+ American Society of Civil Engineers (ASCE)
+ American Institute of Mining Engineers (AIME, now American Institute of Mining, Metallurgical, and Petroleum Engineers)
+ American Society for Testing and Materials (now ASTM International)
+had been members of the United Engineering Society (UES). At the behest of the AIEE, they invited the U.S. government Departments of War, Navy (combined in 1947 to become the Department of Defense or DOD) and CommerceANSI history- Retrieved 2011-09-27 to join in founding a national standards organization.",0.8888888888888888,local,which of the following is correct? what is the american petroleum institute (api) gravity? from the following choices.,2528652988
+1764,Determine the correct option: What is a phageome? among the listed options.,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"Pricing concepts:
+ Basis of futures, the value differential between a future and the spot price
+ Basis (options), the value differential between a call option and a put option
+
+Options
+In finance, an option is a contract which gives the buyer (the owner) the right, but not the obligation, to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date. The seller has the corresponding obligation to fulfill the transactionthat is to sell or buyif the buyer (owner) ""exercises"" the option. The buyer pays a premium to the seller for this right. An option that conveys to the owner the right to buy something at a certain price is a ""call option""; an option that conveys the right of the owner to sell something at a certain price is a ""put option"". Both are commonly traded, but for clarity, the call option is more frequently discussed.
+Options valuation is a topic of ongoing research in academic and practical finance. In basic terms, the value of an option is commonly decomposed into two parts:
+ The first part is the ""intrinsic value"", defined as the difference between the market value of the underlying and the strike price of the given option.
+ The second part is the ""time value"", which depends on a set of other factors which, through a multivariable, non-linear interrelationship, reflect the discounted expected value of that difference at expiration.
+
+In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.",0.42857142857142855,local,determine the correct option: what is a phageome? among the listed options.,453037923
+1765,Determine the correct option: What is the result of the collapse of a cavitation bubble? from the following choices.,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a lower in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp boost in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+Cavitation in fluid mechanics and engineering normally is the phenomenon in which the static pressure of a liquid reduces to below the liquid's vapor pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, called ""bubbles"" or ""voids"", collapse and can generate shock waves that may damage machinery. As a concrete propeller example: The pressure on the suction side of the propeller blades can be very low and when the pressure falls to that of the vapour pressure of the working liquid, cavities filled with gas vapour can form. The process of the formation of these cavities is referred to as cavitation. If the cavities move into the regions of higher pressure (lower velocity), they will implode or collapse. These shock waves are strong when they are very close to the imploded bubble, but rapidly weaken as they propagate away from the implosion. Cavitation collapse is therefore a significant cause of wear in some engineering contexts. Collapsing voids that implode near to a hard surface cause cyclic stress through repeated implosion. This results in surface fatigue of the material, causing a type of damage also called ""cavitation damage"" or ""cavitation erosion"". The most common examples of this kind of wear are to pump impellers, and pipe bends where a sudden change in the direction of fast moving liquid occurs.",0.4444444444444444,local,determine the correct option: what is the result of the collapse of a cavitation bubble? from the following choices.,3622790644
+1766,Determine the correct option: What was Isaac Newton's explanation for rectilinear propagation of light? among the listed options.,"Isaac Newton rejected the wave framework of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave concept of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave framework of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave concept of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave framework of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,"Fresnel gave the first satisfactory explanation of diffraction by straight edges, including the first satisfactory wave-based explanation of rectilinear propagation. By further supposing that light waves are purely transverse, Fresnel explained the nature of polarization. He then worked on double refraction.",0.2857142857142857,local,determine the correct option: what was isaac newton's explanation for rectilinear propagation of light? among the listed options.,1023793297
+1767,Identify the correct statement: What is Martin Heidegger's view on the relationship between time and human existence?,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Martin Heidegger is the best known of Husserl's students, the one whom Husserl chose as his successor at Freiburg. Heidegger's magnum opus Being and Time was dedicated to Husserl. They shared their thoughts and worked alongside each other for over a decade at the University of Freiburg, Heidegger being Husserl's assistant during 1920–1923.Kockelmans, ""Introduction [Martin Heidegger]"" 267–276, 273, in Kockelmans, editor, Phenomenology (1967). Heidegger's early work followed his teacher, but with time he began to develop new insights distinctively variant. Husserl became increasingly critical of Heidegger's work, especially in 1929, and included pointed criticism of Heidegger in lectures he gave during 1931.See above subsection ""Heidegger and the Nazi era"". Heidegger, while acknowledging his debt to Husserl, followed a political position offensive and harmful to Husserl after the Nazis came to power in 1933, Husserl being of Jewish origin and Heidegger infamously being then a Nazi proponent.The multivalent, including the ""horrifying"", aspects of Heidegger in a parallel context are recounted in Peter Eli Gordon, Rosensweig and Heidegger: Between Judaism and German Philosophy (University of California 2003) at 13–14 (Heidegger and Rosensweig's early ""kinship"" with him). ""In 1929, however, one could still read Heidegger's philosophy without being drawn into a controversy concerning its relationship to National Socialism, antisemitism, and the like. The German philosophical world as a whole still cloaked itself in a mantle of relative innocence."" Gordon (2003) at 303–304. ""Rosensweig's work represents the culmination of what is often called the German Jewish Tradition."" Gordon, ""Preface"" (2003) at xix. Academic discussion of Husserl and Heidegger is extensive.
+
+Sartre's definition of existentialism was based on Heidegger's magnum opus Being and Time (1927). In the correspondence with Jean Beaufret later published as the Letter on Humanism, Heidegger implied that Sartre misunderstood him for his own purposes of subjectivism, and that he did not mean that actions take precedence over being so long as those actions were not reflected upon. Heidegger commented that ""the reversal of a metaphysical statement remains a metaphysical statement"", meaning that he thought Sartre had simply switched the roles traditionally attributed to essence and existence without interrogating these concepts and their history.
+
+Ayer was a strong critic of the German philosopher Martin Heidegger. As a logical positivist, Ayer was in conflict with Heidegger's vast, overarching theories of existence. Ayer considered them completely unverifiable through empirical demonstration and logical analysis, and this sort of philosophy an unfortunate strain in modern thought. He considered Heidegger the worst example of such philosophy, which Ayer believed entirely useless. In Philosophy in the Twentieth Century, Ayer accuses Heidegger of ""surprising ignorance"" or ""unscrupulous distortion"" and ""what can fairly be described as charlatanism"".",0.6666666666666666,local,identify the correct statement: what is martin heidegger's view on the relationship between time and human existence?,2422555168
+1768,Which of the following is correct? Who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism?,Maxwell,Einstein,Galileo,Faraday,Newton,A,"In physics, the special theory of relativity, or simply special relativity, is a scientific theory of the relationship between space and time. In Albert Einstein's 1905 paper, 
+""On the Electrodynamics of Moving Bodies"", the theory is presented as being based on just two postulates:
+
+The laws of physics are invariant (identical) in all inertial frames of reference (that is, frames of reference with no acceleration). This is known as the principle of relativity.
+The speed of light in vacuum is the same for all observers, regardless of the motion of light source or observer. This is known as the principle of light constancy, or the principle of light speed invariance.
+The first postulate was first formulated by Galileo Galilei (see Galilean invariance).",0.23529411764705882,live_api,which of the following is correct? who published the first principle that was able to encompass previously separate field theories to provide a unifying principle of electromagnetism?,3362053154
+1769,Select the most accurate option: What is the Maxwell's Demon thought experiment? carefully.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an boost in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an raise in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an raise in temperature in one part and a lower in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"Arthur Schopenhauer (22 February 1788 – 21 September 1860) was a German philosopher and writer. He is known for his 1818 work The World as Will and Representation (expanded in 1844), which characterizes the phenomenal world as the manifestation of a blind and irrational noumenal will. Building on the transcendental idealism of Immanuel Kant, Schopenhauer developed an atheistic metaphysical and ethical system that rejected the contemporaneous ideas of German idealism.
+Schopenhauer was among the first philosophers in the Western tradition to share and affirm significant tenets of Indian philosophy, such as asceticism, denial of the self, and the notion of the world-as-appearance. His work has been described as an exemplary manifestation of philosophical pessimism. Though his work failed to garner substantial attention during his lifetime, he had a posthumous impact across various disciplines, including philosophy, literature, and science. His writing on aesthetics, morality and psycholog",0.0,local,select the most accurate option: what is the maxwell's demon thought experiment? carefully.,3533005168
+1770,What is the Peierls bracket in canonical quantization?,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization method.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization method.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization method that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization method.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization method.,C,"Quantization (in British English quantisation) is the  systematic transition procedure from a classical understanding of physical phenomena to a newer understanding known as quantum mechanics.  It is a procedure for constructing  quantum mechanics from classical mechanics.  A generalization involving infinite degrees of freedom  is field quantization, as in the ""quantization of the electromagnetic field"", referring to photons as field ""quanta"" (for instance as light quanta). This procedure is basic to theories of atomic physics, chemistry, particle physics, nuclear physics, condensed matter physics, and quantum optics.",0.25,local,what is the peierls bracket in canonical quantization?,777349696
+1771,Determine the correct option: What is the decay energy for the free neutron decay process? carefully.,0.013343 MeV,0.013 MeV,"1,000 MeV",0.782 MeV,0.782343 MeV,E,"In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in what is called positron emission. Neither the beta particle nor its associated (anti-)neutrino exist within the nucleus prior to beta decay, but are created in the decay process. By this process, unstable atoms obtain a more stable ratio of protons to neutrons. The probability of a nuclide decaying due to beta and other forms of decay is determined by its nuclear binding energy. The binding energies of all existing nuclides form what is called the nuclear band or valley of stability. For either electron or positron emission to be energetically possible, the energy release or Q value must be positive.
+
+Bound-state β decay 
+A very small minority of free neutron decays (about four per million) are ""two-body decays"": the proton, electron and antineutrino are produced, but the electron fails to gain the 13.6 eV energy necessary to escape the proton, and therefore simply remains bound to it, as a neutral hydrogen atom.An Overview Of Neutron Decay  J. Byrne in Quark-Mixing, CKM Unitarity (H. Abele and D. Mund, 2002), see p.XV In this type of beta decay, in essence all of the neutron decay energy is carried off by the antineutrino.
+
+The most common forms of radioactive decay are:
+ Alpha decay: this process is caused when the nucleus emits an alpha particle, which is a helium nucleus consisting of two protons and two neutrons. The result of the emission is a new element with a lower atomic number.
+ Beta decay (and electron capture): these processes are regulated by the weak force, and result from a transformation of a neutron into a proton, or a proton into a neutron. The neutron to proton transition is accompanied by the emission of an electron and an antineutrino, while proton to neutron transition (except in electron capture) causes the emission of a positron and a neutrino. The electron or positron emissions are called beta particles. Beta decay either increases or decreases the atomic number of the nucleus by one. Electron capture is more common than positron emission, because it requires less energy. In this type of decay, an electron is absorbed by the nucleus, rather than a positron emitted from the nucleus. A neutrino is still emitted in this process, and a proton changes to a neutron.
+ Gamma decay: this process results from a change in the energy level of the nucleus to a lower state, resulting in the emission of electromagnetic radiation. The excited state of a nucleus which results in gamma emission usually occurs following the emission of an alpha or a beta particle. Thus, gamma decay usually follows alpha or beta decay.",0.5555555555555556,local,determine the correct option: what is the decay energy for the free neutron decay process? carefully.,1180389663
+1772,Determine the correct option: What is the main advantage of ferroelectric memristors? based on the given context.,"Ferroelectric memristors have a higher resistance than other types of memristors, making them more suitable for high-power applications.","Ferroelectric domain dynamics can be tuned, allowing for the engineering of memristor response, and resistance variations are due to purely electronic phenomena, making the device more reliable.","Ferroelectric memristors have a more complex structure than other types of memristors, allowing for a wider range of applications.",Ferroelectric memristors have a unique piezoelectric field that allows for the creation of non-uniform elastic strain and a more stable structure.,"Ferroelectric memristors are based on vertically aligned carbon nanotubes, which offer a more efficient and faster switching mechanism than other materials.",B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.5,local,determine the correct option: what is the main advantage of ferroelectric memristors? based on the given context.,555276202
+1773,Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions?,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+In 1956, Tsung-Dao Lee and Chen Ning Yang noticed that there was no evidence that parity was conserved in weak interactions, and so they postulated that this symmetry may not be preserved by the weak force. They sketched the design for an experiment for testing conservation of parity in the laboratory. Later that year, Chien-Shiung Wu and coworkers showed experimentally that an asymmetrical beta emission from  proved that parity is not conserved in beta decay. This surprising result overturned long-held assumptions about parity and the weak force. In recognition of their theoretical work, Lee and Yang were awarded the Nobel Prize for Physics in 1957. However Wu, who was female, was not awarded the Nobel prize.
+
+Wigner was awarded the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"". The prize was shared that year, with the other half of the award divided between Maria Goeppert-Mayer and J. Hans D. Jensen. Wigner professed that he had never considered the possibility that this might occur, and added: ""I never expected to get my name in the newspapers without doing something wicked."" He also won the Franklin Medal in 1950, the Enrico Fermi award in 1958, the Atoms for Peace Award in 1959, the Max Planck Medal in 1961, the National Medal of Science in 1969, the Albert Einstein Award in 1972, the Golden Plate Award of the American Academy of Achievement in 1974, the eponymous Wigner Medal in 1978, and the Herzl Prize in 1982. In 1968 he gave the Josiah Willard Gibbs lecture.",0.6,local,who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions?,3747497573
+1774,Select the most accurate option: What is the function of the fibrous cardiac skeleton? from the following choices.,The fibrous cardiac skeleton is a mechanism of blood vessels that supplies oxygen and nutrients to the heart muscle.,"The fibrous cardiac skeleton is responsible for the pumping action of the heart, regulating the flow of blood through the atria and ventricles.","The fibrous cardiac skeleton provides structure to the heart, forming the atrioventricular septum that separates the atria from the ventricles, and the fibrous rings that serve as bases for the four heart valves.",The fibrous cardiac skeleton is a network of nerves that controls the heartbeat and rhythm of the heart.,"The fibrous cardiac skeleton is a protective layer that surrounds the heart, shielding it from external damage.",C,"In humans
+Cardiac
+The collagenous cardiac skeleton, which includes the four heart valve rings, is histologically, elastically and uniquely bound to cardiac muscle. The cardiac skeleton also includes the separating septa of the heart chambers – the interventricular septum and the atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous torsional force opposed to the fluid mechanics of blood pressure emitted from the heart. The collagenous structure that divides the upper chambers of the heart from the lower chambers is an impermeable membrane that excludes both blood and electrical impulses through typical physiological means. With support from collagen, atrial fibrillation never deteriorates to ventricular fibrillation. Collagen is layered in variable densities with smooth muscle mass. The mass, distribution, age, and density of collagen all contribute to the compliance required to move blood back and forth. Individual cardiac valvular leaflets are folded into shape by specialized collagen under variable pressure. Gradual calcium deposition within collagen occurs as a natural function of aging. Calcified points within collagen matrices show contrast in a moving display of blood and muscle, enabling methods of cardiac imaging technology to arrive at ratios essentially stating blood in (cardiac input) and blood out (cardiac output). Pathology of the collagen underpinning of the heart is understood within the category of connective tissue disease.
+
+An echocardiogram can, within certain limits, produce an accurate assessment of the direction of blood flow and the velocity of blood and cardiac tissue at any arbitrary point using the Doppler effect. One of the limitations is that the ultrasound beam should be as parallel to the blood flow as possible. Velocity measurements allow assessment of cardiac valve areas and function, abnormal communications between the left and right side of the heart, leaking of blood through the valves (valvular regurgitation), and calculation of the cardiac output. Contrast-enhanced ultrasound using gas-filled microbubble contrast media can be used to improve velocity or other flow-related medical measurements.
+
+The cardiac electrophysiology study typically measures the response of the injured or cardiomyopathic myocardium to PES on specific pharmacological regimens in order to assess the likelihood that the regimen will successfully prevent potentially fatal sustained ventricular tachycardia (VT) or ventricular fibrillation (VF) in the future. Sometimes a series of electrophysiology-study drug trials must be conducted to enable the cardiologist to select the one regimen for long-term treatment that best prevents or slows the development of VT or VF following PES. Such studies may also be conducted in the presence of a newly implanted or newly replaced cardiac pacemaker or AICD.",0.6,local,select the most accurate option: what is the function of the fibrous cardiac skeleton? from the following choices.,2804265993
+1775,Choose the correct answer: What is the explanation for the effective supersymmetry in quark-diquark models? from the following choices.,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,choose the correct answer: what is the explanation for the effective supersymmetry in quark-diquark models? from the following choices.,2114690611
+1776,Identify the correct statement: What is the significance of Baryon Acoustic Oscillations (BAOs) in the study of the universe? based on the given context.,"BAOs establish a preferred length scale for baryons, which can be used to detect a subtle preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130-160 Mpc.",BAOs help to determine the average temperature of the Universe by measuring the temperature of the cosmic microwave background radiation.,BAOs provide a way to measure the time it takes for a signal to reach its destination compared to the time it takes for background noise to dissipate.,BAOs can be used to make a two-dimensional map of the galaxy distribution in the Universe.,BAOs are used to measure the speed of light in the Universe.,A,"Baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe on large scales. These are predicted to arise in the Lambda-CDM model due to acoustic oscillations in the photon–baryon fluid of the early universe and can be observed in the cosmic microwave background angular power spectrum. BAOs set up a preferred length scale for baryons. As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1%) preference for pairs of galaxies to be separated by 147 Mpc, compared to those separated by 130–160 Mpc. This feature was predicted theoretically in the 1990s and then discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations with BAO measurements from galaxy redshift surveys provides a precise estimate of the Hubble constant and the average matter density in the Universe. The results support the Lambda-CDM model.
+
+The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping (also called collisionless damping or Silk damping). The acoustic oscillations arise because of a conflict in the photon–baryon plasma in the early universe. The pressure of the photons tends to erase anisotropies, whereas the gravitational attraction of the baryons, moving at speeds much slower than light, makes them tend to collapse to form overdensities. These two effects compete to create acoustic oscillations, which give the microwave background its characteristic peak structure. The peaks correspond, roughly, to resonances in which the photons decouple when a particular mode is at its peak amplitude.
+
+Dark energy, though speculative, solves numerous problems. Measurements of the cosmic microwave background indicate that the universe is very nearly spatially flat, and therefore according to general relativity the universe must have almost exactly the critical density of mass/energy. But the mass density of the universe can be measured from its gravitational clustering, and is found to have only about 30% of the critical density. Since theory suggests that dark energy does not cluster in the usual way it is the best explanation for the ""missing"" energy density. Dark energy also helps to explain two geometrical measures of the overall curvature of the universe, one using the frequency of gravitational lenses, and the other using the characteristic pattern of the large-scale structure--baryon acoustic oscillations--as a cosmic ruler.",0.38461538461538464,local,identify the correct statement: what is the significance of baryon acoustic oscillations (baos) in the study of the universe? based on the given context.,14573203
+1777,Who published the first theory that was able to encompass previously separate field theories to provide a unifying theory of electromagnetism?,Maxwell,Einstein,Galileo,Faraday,Newton,A,"In addition, relativity theory implies that in moving frames of reference, a magnetic field transforms to a field with a nonzero electric component and conversely, a moving electric field transforms to a nonzero magnetic component, thus firmly showing that the phenomena are two sides of the same coin. Hence the term ""electromagnetism"". (For more information, see Classical electromagnetism and special relativity and Covariant formulation of classical electromagnetism.)
+
+Encouraged by his success with general relativity, Einstein sought an even more ambitious geometrical theory that would treat gravitation and electromagnetism as aspects of a single entity. In 1950, he described his unified field theory in a Scientific American article titled ""On the Generalized Theory of Gravitation"".Einstein (1950). His attempt to find the most fundamental laws of nature won him praise but not success: a particularly conspicuous blemish of his model was that it did not accommodate the strong and weak nuclear forces, neither of which was well understood until many years after his death. Although most researchers now believe that Einstein's approach to unifying physics was mistaken, his goal of a theory of everything is one to which his successors still aspire.
+
+In physics, three dimensions of space and one of time is the accepted norm. However, there are theories that attempt to unify the four fundamental forces by introducing extra dimensions/hyperspace. Most notably, superstring theory requires 10 spacetime dimensions, and originates from a more fundamental 11-dimensional theory tentatively called M-theory which subsumes five previously distinct superstring theories. Supergravity theory also promotes 11D spacetime = 7D hyperspace + 4 common dimensions. To date, no direct experimental or observational evidence is available to support the existence of these extra dimensions. If hyperspace exists, it must be hidden from us by some physical mechanism. One well-studied possibility is that the extra dimensions may be ""curled up"" (compactified) at such tiny scales as to be effectively invisible to current experiments.
+In 1921, Kaluza–Klein theory presented 5D including an extra dimension of space. At the level of quantum field theory, Kaluza–Klein theory unifies gravity with gauge interactions, based on the realization that gravity propagating in small, compact extra dimensions is equivalent to gauge interactions at long distances. In particular when the geometry of the extra dimensions is trivial, it reproduces electromagnetism. However, at sufficiently high energies or short distances, this setup still suffers from the same pathologies that famously obstruct direct attempts to describe quantum gravity. Therefore, these models still require a UV completion, of the kind that string theory is intended to provide. In particular, superstring theory requires six compact dimensions (6D hyperspace) forming a Calabi–Yau manifold. Thus Kaluza-Klein theory may be considered either as an incomplete description on its own, or as a subset of string theory model building.",0.6428571428571429,local,who published the first theory that was able to encompass previously separate field theories to provide a unifying theory of electromagnetism?,1828043420
+1778,Pick the best possible answer: What is the Ozma Problem?,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.
+
+The graph isomorphism problem is the computational problem of determining whether two finite graphs are isomorphic. An important unsolved problem in complexity theory is whether the graph isomorphism problem is in P, NP-complete, or NP-intermediate. The answer is not known, but it is believed that the problem is at least not NP-complete. If graph isomorphism is NP-complete, the polynomial time hierarchy collapses to its second level. Since it is widely believed that the polynomial hierarchy does not collapse to any finite level, it is believed that graph isomorphism is not NP-complete. The best algorithm for this problem, due to László Babai, runs in quasi-polynomial time.
+
+A decision problem is decidable or effectively solvable if the set of inputs for which the answer is YES is a recursive set.
+ A decision problem is partially decidable, semidecidable, solvable, or provable if the set of inputs for which the answer is YES is a recursively enumerable set.",0.5,local,pick the best possible answer: what is the ozma problem?,950994429
+1779,Determine the correct option: What is the reason for recycling rare metals according to the United Nations? among the listed options.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will reduce in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials. The recyclability of a material depends on its ability to reacquire the properties it had in its original state. It is an alternative to ""conventional"" waste disposal that can save material and help lower greenhouse gas emissions. It can also prevent the waste of potentially useful materials and reduce the consumption of fresh raw materials, reducing energy use, air pollution (from incineration) and water pollution (from landfilling).
+Recycling is a key component of modern waste reduction and represents the third step in the ""Reduce, Reuse, and Recycle"" waste hierarchy, contributing to environmental sustainability and resource conservation. It promotes environmental sustainability by removing raw material input and redirecting waste output in the economic system. There are some ISO standards related to recycling, such as ISO 152",0.07692307692307693,live_api,determine the correct option: what is the reason for recycling rare metals according to the united nations? among the listed options.,2198851789
+1780,Identify the correct statement: What is the relationship between the amplitude of a sound wave and its loudness? among the listed options.,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.38461538461538464,local,identify the correct statement: what is the relationship between the amplitude of a sound wave and its loudness? among the listed options.,1207005381
+1781,Select the most accurate option: What is the main factor that determines the occurrence of each type of supernova? based on the given context.,The star's distance from Earth,The star's age,The star's temperature,The star's luminosity,The progenitor star's metallicity,E,"The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Protoscience, early sciences, and natural philosophies such as alchemy and astrology that existed during the Bronze Age, Iron Age, classical antiquity and the Middle Ages, declined after the emergence of modern sciences during the Scientific Revolution.
+The earliest roots of scientific thinking and practice can be traced to Ancient Egypt and Mesopotamia during the 3rd and 2nd millennia BCE. These civilizations' contributions to mathematics, astronomy, and medicine influenced later Greek natural philosophy of classical antiquity, wherein formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Latin-speaking Western Europe during the early centuries (400 to 1000 CE)",0.13333333333333333,live_api,select the most accurate option: what is the main factor that determines the occurrence of each type of supernova? based on the given context.,3746796761
+1782,Determine the correct option: What are the Navier-Stokes equations? among the listed options.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.3333333333333333,local,determine the correct option: what are the navier-stokes equations? among the listed options.,4086905985
+1783,Choose the correct answer: What are the two main interpretations for the disparity between the presence of matter and antimatter in the observable universe?,"The universe began with a small preference for matter, or it was originally perfectly asymmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with a small preference for antimatter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with equal amounts of matter and antimatter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of antimatter over time.","The universe began with a small preference for matter, or it was originally perfectly symmetric, but a set of phenomena contributed to a small imbalance in favor of matter over time.","The universe began with equal amounts of matter and antimatter, or it was originally perfectly asymmetric, but a set of phenomena contributed to a small imbalance in favor of matter over time.",D,"There is strong evidence that the observable universe is composed almost entirely of ordinary matter, as opposed to an equal mixture of matter and antimatter. This asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics. The process by which this inequality between matter and antimatter particles is hypothesised to have occurred is called baryogenesis.
+
+Most things observable from the Earth seem to be made of matter rather than antimatter. If antimatter-dominated regions of space existed, the gamma rays produced in annihilation reactions along the boundary between matter and antimatter regions would be detectable.
+
+Another major problem in cosmology is what caused the universe to contain far more matter than antimatter. Cosmologists can observationally deduce that the universe is not split into regions of matter and antimatter. If it were, there would be X-rays and gamma rays produced as a result of annihilation, but this is not observed. Therefore, some process in the early universe must have created a small excess of matter over antimatter, and this (currently not understood) process is called baryogenesis. Three required conditions for baryogenesis were derived by Andrei Sakharov in 1967, and requires a violation of the particle physics symmetry, called CP-symmetry, between matter and antimatter. However, particle accelerators measure too small a violation of CP-symmetry to account for the baryon asymmetry. Cosmologists and particle physicists look for additional violations of the CP-symmetry in the early universe that might account for the baryon asymmetry.",0.38461538461538464,local,choose the correct answer: what are the two main interpretations for the disparity between the presence of matter and antimatter in the observable universe?,3135994963
+1784,Determine the correct option: What is the reason for the sun appearing slightly yellowish when viewed from Earth? carefully.,The sun appears yellowish due to a reflection of the Earth's atmosphere.,"The longer wavelengths of light, such as red and yellow, are not scattered away and are directly visible when looking towards the sun.","The sun appears yellowish due to the scattering of all colors of light, mainly blue and green, in the Earth's atmosphere.","The sun emits a yellow light due to its own spectrum, which is visible when viewed from Earth.","The atmosphere absorbs the shorter wavelengths of light, such as blue and red, leaving only the longer wavelengths of light, such as green and yellow, visible when looking towards the sun.",B,No match found.,0.0,live_api,determine the correct option: what is the reason for the sun appearing slightly yellowish when viewed from earth? carefully.,2653700420
+1785,Determine the correct option: What is Modified Newtonian Dynamics (MOND)? from the following choices.,MOND is a concept that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's concept of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a principle that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,"Although the astrophysics community generally accepts the existence of dark matter, a minority of astrophysicists, intrigued by specific observations that are not well explained by ordinary dark matter, argue for various modifications of the standard laws of general relativity. These include modified Newtonian dynamics (MOND), tensor–vector–scalar gravity, and entropic gravity. So far none of the proposed modified gravity theories can describe every piece of observational evidence at the same time, suggesting that even if gravity has to be modified, some form of dark matter will still be required.",0.4444444444444444,local,determine the correct option: what is modified newtonian dynamics (mond)? from the following choices.,226299136
+1786,Determine the correct option: What is linear frame dragging? among the listed options.,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.0,live_api,determine the correct option: what is linear frame dragging? among the listed options.,744487273
+1787,Pick the best possible answer: What is the identity operation in symmetry groups? from the following choices.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"A crossword is a word game consisting of a grid of black and white squares with numbers on the corners, into which solvers enter words or phrases (""entries"") crossing each other horizontally (""across"") and vertically (""down"") according to a set of clues. Each white square is typically filled with one letter, while the black squares are used to separate entries. The first white square in each entry is typically numbered to correspond to its clue. 
+Crosswords commonly appear in newspapers and magazines. The earliest crosswords that resemble their modern form were popularized by the New York World in the 1910s. Many variants of crosswords are popular around the world, including cryptic crosswords and many language-specific variants.
+Crossword construction in modern times usually involves the use of software.  Constructors choose a theme (except for themeless puzzles), place the theme answers in a grid which is usually rotationally symmetric, fill in the rest of the grid, and then write cl",0.0,live_api,pick the best possible answer: what is the identity operation in symmetry groups? from the following choices.,800448798
+1788,Choose the correct answer: What is a light-year?,A unit of time used to express astronomical distances that is equivalent to the time that an object moving at the speed of light in vacuum would take to travel in one Julian year: approximately 9.46 trillion seconds (9.46×1012 s) or 5.88 trillion minutes (5.88×1012 min).,A unit of length used to express astronomical distances that is equivalent to the distance that an object moving at the speed of light in vacuum would travel in one Julian year: approximately 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).,A unit of temperature used to express astronomical distances that is equivalent to the temperature of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion Kelvin (9.46×1012 K) or 5.88 trillion Celsius (5.88×1012 °.,A unit of energy used to express astronomical distances that is equivalent to the energy of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion joules (9.46×1012 J) or 5.88 trillion watt-hours (5.88×1012 Wh).,A unit of mass used to express astronomical distances that is equivalent to the mass of an object moving at the speed of light in vacuum in one Julian year: approximately 9.46 trillion kilograms (9.46×1012 kg) or 5.88 trillion pounds (5.88×1012 lb).,B,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.
+
+Filters on a camera lens, or color gels over the light source(s) may be used to correct color balance. When shooting with a bluish light (high color temperature) source such as on an overcast day, in the shade, in window light, or if using tungsten film with white or blue light, a yellowish-orange filter will correct this. For shooting with daylight film (calibrated to 5600 K) under warmer (low color temperature) light sources such as sunsets, candlelight or tungsten lighting, a bluish (e.g. #80A) filter may be used. More-subtle filters are needed to correct for the difference between, say 3200 K and 3400 K tungsten lamps or to correct for the slightly blue cast of some flash tubes, which may be 6000 K.",0.6,local,choose the correct answer: what is a light-year?,934749145
+1789,Determine the correct option: What is the role of axioms in a formal principle? from the following choices.,"Basis statements called axioms form the foundation of a formal principle and, together with the deducing rules, help in deriving a set of statements called theorems using proof principle.",Axioms are supplementary statements added to a formal concept that break down otherwise complex statements into more simple ones.,"Axioms are redundant statements that can be derived from other statements in a formal concept, providing additional perspective to theorems derived from the concept.",The axioms in a concept are used for experimental validation of the theorems derived from the statements in the concept.,"The axioms in a formal principle are added to prove that the statements derived from the principle are true, irrespective of their validity in the real world.",A,"In addition to familiar number systems such as the rationals, there are other, less immediate examples of fields. The following example is a field consisting of four elements called , , , and . The notation is chosen such that  plays the role of the additive identity element (denoted 0 in the axioms above), and  is the multiplicative identity (denoted  in the axioms above). The field axioms can be verified by using some more field theory, or by direct computation. For example,
+ , which equals , as required by the distributivity.
+
+In the modern understanding, a set of axioms is any collection of formally stated assertions from which other formally stated assertions follow – by the application of certain well-defined rules. In this view, logic becomes just another formal system. A set of axioms should be consistent; it should be impossible to derive a contradiction from the axioms. A set of axioms should also be non-redundant; an assertion that can be deduced from other axioms need not be regarded as an axiom.
+
+An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:",0.6666666666666666,local,determine the correct option: what is the role of axioms in a formal principle? from the following choices.,1378025001
+1790,"Who proposed the principle of ""complexity from noise"" and when was it first introduced?",Ilya Prigogine in 1979,Henri Atlan in 1972,Democritus and Lucretius in ancient times,None of the above.,René Descartes in 1637,B,"It is common to put compression, wah and overdrive pedals at the start of the chain; modulation (chorus, flanger, phase shifter) in the middle; and time-based units (delay/echo, reverb at the end. When using many effects, unwanted noise and hum can be introduced into the sound. Some performers use a noise gate pedal at the end of a chain to reduce unwanted noise and hum introduced by overdrive units or vintage gear.
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.
+
+Positive, appropriate and negative complexity 
+The application in project management of the Law of Requisite Complexity, as proposed by Stefan Morcov, is the analysis of positive, appropriate and negative complexity.Morcov, S. (2021). Managing Positive and Negative Complexity: Design and Validation of an IT Project Complexity Management Framework. KU Leuven University. Available at https://lirias.kuleuven.be/retrieve/637007",0.625,local,"who proposed the principle of ""complexity from noise"" and when was it first introduced?",727209701
+1791,Pick the best possible answer: Which of the following statements is true about the categorization of planetary mechanisms according to their orbital dynamics? from the following choices.,Planetary mechanisms cannot be categorized based on their orbital dynamics.,"Planetary frameworks can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these, but only based on the number of planets in the framework.",Planetary mechanisms can only be categorized as resonant or non-resonant-interacting.,"Planetary mechanisms can be categorized as resonant, non-resonant-interacting, hierarchical, or some combination of these.",Planetary frameworks can only be categorized as hierarchical or non-hierarchical.,D,No match found.,0.0,live_api,pick the best possible answer: which of the following statements is true about the categorization of planetary mechanisms according to their orbital dynamics? from the following choices.,849592414
+1792,Which of the following is correct? Who was the first person to describe the pulmonary circulation framework? from the following choices.,Galen,Avicenna,Hippocrates,Aristotle,Ibn al-Nafis,E,"Bradykinin is rapidly inactivated in the circulating blood, and it disappears completely in a single pass through the pulmonary circulation. Angiotensin I also disappears in the pulmonary circulation because of its conversion to angiotensin II. Furthermore, angiotensin II passes through the lungs without any loss. The inactivation of bradykinin and the conversion of angiotensin I to angiotensin II in the lungs was thought to be caused by the same enzyme. In 1970, Ng and Vane, using BPF provided by Ferreira, showed the conversion is inhibited during its passage through the pulmonary circulation.
+
+The primary responsibility of the heart is to pump blood throughout the body.
+It pumps blood from the body — called the systemic circulation — through the lungs — called the pulmonary circulation — and then back out to the body. This means that the heart is connected to and affects the entirety of the body. Simplified, the heart is a circuit of the circulation. While plenty is known about the healthy heart, the bulk of study in cardiology is in disorders of the heart and restoration, and where possible, of function.
+
+The aortic arch loops over the left pulmonary artery and the bifurcation of the pulmonary trunk, to which it remains connected by the ligamentum arteriosum, a remnant of the fetal circulation that is obliterated a few days after birth. In addition to these blood vessels, the aortic arch crosses the left main bronchus. Between the aortic arch and the pulmonary trunk is a network of autonomic nerve fibers, the cardiac plexus or aortic plexus. The left vagus nerve, which passes anterior to the aortic arch, gives off a major branch, the recurrent laryngeal nerve, which loops under the aortic arch just lateral to the ligamentum arteriosum. It then runs back to the neck.",0.36363636363636365,local,which of the following is correct? who was the first person to describe the pulmonary circulation framework? from the following choices.,2881182338
+1793,Which of the following is correct? What is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the low fluidity of membrane lipid fatty-acyl chains in the gel phase.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants is responsible for the exposure of chloroplast thylakoid membranes to cold environmental temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for innate fluidity even at relatively low temperatures.,The high degree of fatty-acyl disorder in the thylakoid membranes of plants allows for a gel-to-liquid crystalline phase transition temperature to be determined by many techniques.,"The high degree of fatty-acyl disorder in the thylakoid membranes of plants restricts the movement of membrane proteins, thus hindering their physiological role.",C,"The biosynthesis of fatty acids from acetyl-CoA primarily requires two enzymes. Acetyl-CoA carboxylase creates malonyl-CoA, used in both the first step and the extension steps of synthesis. Fatty acid synthase (FAS) is a large complex of enzymes and cofactors including acyl carrier protein (ACP) which holds the acyl chain as it is synthesized. The initiation of synthesis begins with the condensation of malonyl-ACP with acetyl-CoA to produce ketobutyryl-ACP. 2 reductions involving the use of NADPH and one dehydration creates butyryl-ACP. Extension of the fatty acid comes from repeated cycles of malonyl-ACP condensation, reduction, and dehydration.
+
+Membranes
+Cholesterol is present in varying degrees in all animal cell membranes but is absent in prokaryotes. It is required to build and maintain membranes and modulates membrane fluidity over the range of physiological temperatures. The hydroxyl group of each cholesterol molecule interacts with water molecules surrounding the membrane, as do the polar heads of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty-acid chain of the other lipids. Through the interaction with the phospholipid fatty-acid chains, cholesterol increases membrane packing, which both alters membrane fluidity and maintains membrane integrity so that animal cells do not need to build cell walls (like plants and most bacteria). The membrane remains stable and durable without being rigid, allowing animal cells to change shape and animals to move.
+
+The three-dimensional structure of the thylakoid membrane system has been disputed. Many models have been proposed, the most prevalent being the helical model, in which granum stacks of thylakoids are wrapped by helical stromal thylakoids. Another model known as the 'bifurcation model', which was based on the first electron tomography study of plant thylakoid membranes, depicts the stromal membranes as wide lamellar sheets perpendicular to the grana columns which bifurcates into multiple parallel discs forming the granum-stroma assembly. The helical model was supported by several additional works, but ultimately it was determined in 2019 that features from both the helical and bifurcation models are consolidated by newly discovered left-handed helical membrane junctions. Likely for ease, the thylakoid system is still commonly depicted by older ""hub and spoke"" models where the grana are connected to each other by tubes of stromal thylakoids.",0.4666666666666667,local,which of the following is correct? what is the significance of the high degree of fatty-acyl disorder in the thylakoid membranes of plants? based on the given context.,3209120590
+1794,Determine the correct option: What is the role of the Higgs boson in the Standard Model? carefully.,The Higgs boson is responsible for giving mass to the photon and gluon in the Standard Model.,The Higgs boson has no role in the Standard Model.,The Higgs boson is responsible for giving mass to all the elementary particles in the Standard Model.,"The Higgs boson is responsible for giving mass to all the elementary particles, except the photon and gluon, in the Standard Model.",The Higgs boson is responsible for giving mass to all the composite particles in the Standard Model.,D,"In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.
+
+The electric charge arises as the particular linear combination (nontrivial) of  (weak hypercharge) and the  component of weak isospin () that does not couple to the Higgs boson. That is to say: the Higgs and the electromagnetic field have no effect on each other, at the level of the fundamental forces (""tree level""), while any other combination of the hypercharge and the weak isospin must interact with the Higgs. This causes an apparent separation between the weak force, which interacts with the Higgs, and electromagnetism, which does not. Mathematically, the electric charge is a specific combination of the hypercharge and  outlined in the figure.
+
+After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).",0.4444444444444444,local,determine the correct option: what is the role of the higgs boson in the standard model? carefully.,2158264341
+1795,Identify the correct statement: What is a Schwarzschild black hole? from the following choices.,"A black hole that has mass but neither electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass but neither electric charge nor angular momentum, and is spherically symmetric, according to Birkhoff's theorem.","A black hole that has neither mass nor electric charge nor angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.","A black hole that has mass, electric charge, and angular momentum, and is not spherically symmetric, according to Birkhoff's theorem.",C,"The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole.
+For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations. The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge.
+
+Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a  black hole is comparable to that of water.
+
+For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole.",0.375,local,identify the correct statement: what is a schwarzschild black hole? from the following choices.,1968249399
+1796,Identify the correct statement: What is the relationship between interstellar and cometary chemistry? among the listed options.,"Cometary chemistry is responsible for the formation of interstellar molecules, but there is no direct connection between the two.","Interstellar and cometary chemistry are the same thing, just with different names.","There is a possible connection between interstellar and cometary chemistry, as indicated by the similarity between interstellar and cometary ices and the analysis of organics from comet samples returned by the Stardust mission.","There is no relationship between interstellar and cometary chemistry, as they are two completely different phenomena.","Interstellar chemistry is responsible for the formation of comets, but there is no direct connection between the two.",C,No match found.,0.0,live_api,identify the correct statement: what is the relationship between interstellar and cometary chemistry? among the listed options.,3754447953
+1797,"Select the most accurate option: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"Healthcare in the United States is largely provided by private sector healthcare facilities, and paid for by a combination of public programs, county indigent health care programs, private insurance, and out-of-pocket payments. The U.S. is the only developed country without a system of universal healthcare, with around 92% of the population covered under some kind of health insurance for some, or all of the year. The United States spends more on healthcare than any other country, both in absolute terms and as a percentage of GDP; however, this expenditure does not necessarily translate into better overall health outcomes compared to other developed nations. In 2022, the United States spent approximately 17.8% of its Gross Domestic Product (GDP) on healthcare, significantly higher than the average of 11.5% among other high-income countries. Coverage varies across the population with certain groups. This includes the elderly, disabled, and low-income individuals receiving more comprehens",0.0625,live_api,"select the most accurate option: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.",3771446676
+1798,Select the most accurate option: What did Arthur Eddington discover about two of Einstein's types of gravitational waves? carefully.,"Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could only be made to propagate at the speed of gravity by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could only be made to propagate at the speed of sound by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate framework he used, and could be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate mechanism he used, and could not be made to propagate at any speed by choosing appropriate coordinates.","Arthur Eddington showed that two of Einstein's types of waves were artifacts of the coordinate structure he used, and could only be made to propagate at the speed of light by choosing appropriate coordinates.",C,No match found.,0.0,live_api,select the most accurate option: what did arthur eddington discover about two of einstein's types of gravitational waves? carefully.,3671334952
+1799,Pick the best possible answer: What does Earnshaw's theorem state? based on the given context.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,No match found.,0.0,live_api,pick the best possible answer: what does earnshaw's theorem state? based on the given context.,3866507503
+1800,Select the most accurate option: What is spontaneous symmetry breaking? from the following choices.,"Spontaneous symmetry breaking occurs when the action of a framework has no symmetry, but the vacuum state has a symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a principle has a symmetry, and the vacuum state also has the same symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a framework has no symmetry, and the vacuum state also has no symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a principle has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is invariant under the symmetry, giving it a zero vacuum expectation value.","Spontaneous symmetry breaking occurs when the action of a concept has a symmetry, but the vacuum state violates this symmetry. In that case, there will exist a local operator that is non-invariant under the symmetry, giving it a nonzero vacuum expectation value.",E,"The above spontaneous symmetry breaking makes the  and  bosons coalesce into two different physical bosons with different masses – the  boson, and the photon (),
+
+In the Standard Model, the observed physical particles, the  and  bosons, and the photon, are produced through the spontaneous symmetry breaking of the electroweak symmetry SU(2) × U(1) to U(1), effected by the Higgs mechanism (see also Higgs boson), an elaborate quantum-field-theoretic phenomenon that ""spontaneously"" alters the realization of the symmetry and rearranges degrees of freedom.",0.3333333333333333,local,select the most accurate option: what is spontaneous symmetry breaking? from the following choices.,631652177
+1801,Pick the best possible answer: What is Minkowski space? among the listed options.,Minkowski space is a physical space where objects move in a straight line unless acted upon by a force.,Minkowski space is a mathematical model that combines inertial space and time manifolds with a non-inertial reference frame of space and time into a four-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a two-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a three-dimensional model relating a position to the field.,Minkowski space is a physical space where objects move in a curved line unless acted upon by a force.,B,"The history of autism encompasses various conceptual and treatment approaches, with the understanding of autism having been shaped by cultural, scientific, and societal factors. Pathologized or viewed as beneficial as part of neurodiversity, autism has been subject to various treatments. Progress in scientific understanding of autism has contributed to both treatment and perceptions of autism.
+The term autism was first introduced by Eugen Bleuler in his description of schizophrenia in 1911. The diagnosis of schizophrenia was broader than its modern equivalent; autistic children were often diagnosed with childhood schizophrenia. The earliest research that focused on children who would today be considered autistic was conducted by Grunya Sukhareva starting in the 1920s. In the 1930s and 1940s, Hans Asperger and Leo Kanner described two related syndromes, later termed Asperger syndrome and infantile autism. Kanner thought that the condition he had described might be distinct from schizoph",0.0,live_api,pick the best possible answer: what is minkowski space? among the listed options.,2442069185
+1802,Pick the best possible answer: What is the butterfly effect? carefully.,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the variation between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"The phrase refers to the effect of a butterfly's wings creating tiny changes in the atmosphere that may ultimately alter the path of a tornado or delay, accelerate, or even prevent the occurrence of a tornado in another location. The butterfly does not power or directly create the tornado, but the term is intended to imply that the flap of the butterfly's wings can cause the tornado: in the sense that the flap of the wings is a part of the initial conditions of an interconnected complex web; one set of conditions leads to a tornado, while the other set of conditions doesn't. The flapping wing creates a small change in the initial condition of the system, which cascades to large-scale alterations of events (compare: domino effect). Had the butterfly not flapped its wings, the trajectory of the system might have been vastly different—but it's also equally possible that the set of conditions without the butterfly flapping its wings is the set that leads to a tornado.
+
+Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Recent debates on butterfly effects 
+The first kind of butterfly effect (BE1), known as SDIC (Sensitive Dependence on Initial Conditions), is widely recognized and demonstrated through idealized chaotic models. However, opinions differ regarding the second kind of butterfly effect, specifically the impact of a butterfly flapping its wings on tornado formation, as indicated in two 2024 articles. In more recent discussions published by Physics Today, it is acknowledged that the second kind of butterfly effect (BE2) has never been rigorously verified using a realistic weather model. While the studies suggest that BE2 is unlikely in the real atmosphere, its invalidity in this context does not negate the applicability of BE1 in other areas, such as pandemics or historical events.",0.42857142857142855,local,pick the best possible answer: what is the butterfly effect? carefully.,271739
+1803,"Identify the correct statement: What is the concept of simultaneity in Einstein's book, Relativity?","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.
+
+Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Other important motivations for Einstein's development of relativity were the moving magnet and conductor problem and (indirectly) the negative aether drift experiments, already mentioned by him in the introduction of his first relativity paper. Einstein wrote in a note in 1952:",0.5555555555555556,local,"identify the correct statement: what is the concept of simultaneity in einstein's book, relativity?",3916322428
+1804,Choose the correct answer: What is the result of the collapse of a cavitation bubble? from the following choices.,"The collapse of a cavitation bubble causes the surrounding liquid to expand, resulting in the formation of a low-pressure vapor bubble.","The collapse of a cavitation bubble causes a minimize in pressure and temperature of the vapor within, releasing a small amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes a sharp boost in pressure and temperature of the vapor within, releasing a significant amount of energy in the form of an acoustic shock wave and visible light.","The collapse of a cavitation bubble causes the surrounding liquid to implode, resulting in the formation of a vacuum.",The collapse of a cavitation bubble has no effect on the surrounding liquid or vapor.,C,"Hydrodynamic cavitation
+Hydrodynamic cavitation is the process of vaporisation, bubble generation and bubble implosion which occurs in a flowing liquid as a result of a decrease and subsequent increase in local pressure. Cavitation will only occur if the local pressure declines to some point below the saturated vapor pressure of the liquid and subsequent recovery above the vapor pressure. If the recovery pressure is not above the vapor pressure then flashing is said to have occurred. In pipe systems, cavitation typically occurs either as the result of an increase in the kinetic energy (through an area constriction) or an increase in the pipe elevation.
+
+Non-inertial cavitation is the process in which small bubbles in a liquid are forced to oscillate in the presence of an acoustic field, when the intensity of the acoustic field is insufficient to cause total bubble collapse. This form of cavitation causes significantly less erosion than inertial cavitation, and is often used for the cleaning of delicate materials, such as silicon wafers.
+
+Cavitation in fluid mechanics and engineering normally is the phenomenon in which the static pressure of a liquid reduces to below the liquid's vapor pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, called ""bubbles"" or ""voids"", collapse and can generate shock waves that may damage machinery. As a concrete propeller example: The pressure on the suction side of the propeller blades can be very low and when the pressure falls to that of the vapour pressure of the working liquid, cavities filled with gas vapour can form. The process of the formation of these cavities is referred to as cavitation. If the cavities move into the regions of higher pressure (lower velocity), they will implode or collapse. These shock waves are strong when they are very close to the imploded bubble, but rapidly weaken as they propagate away from the implosion. Cavitation collapse is therefore a significant cause of wear in some engineering contexts. Collapsing voids that implode near to a hard surface cause cyclic stress through repeated implosion. This results in surface fatigue of the material, causing a type of damage also called ""cavitation damage"" or ""cavitation erosion"". The most common examples of this kind of wear are to pump impellers, and pipe bends where a sudden change in the direction of fast moving liquid occurs.",0.4444444444444444,local,choose the correct answer: what is the result of the collapse of a cavitation bubble? from the following choices.,2082183632
+1805,Pick the best possible answer: What is the Optical Signal-to-Noise Ratio (OSNR)? among the listed options.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in mechanisms where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in mechanisms where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.3333333333333333,local,pick the best possible answer: what is the optical signal-to-noise ratio (osnr)? among the listed options.,3600788092
+1806,Which of the following is correct? What is the Liouville density? among the listed options.,The Liouville density is a probability distribution that specifies the probability of finding a particle at a certain position in phase space for a collection of particles.,The Liouville density is a quasiprobability distribution that plays an analogous role to the probability distribution for a quantum particle.,The Liouville density is a bounded probability distribution that is a convenient indicator of quantum-mechanical interference.,The Liouville density is a probability distribution that takes on negative values for states which have no classical model.,The Liouville density is a probability distribution that satisfies all the properties of a conventional probability distribution for a quantum particle.,A,"The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.
+
+Einstein returned to the problem of thermodynamic fluctuations, giving a treatment of the density variations in a fluid at its critical point. Ordinarily, the density fluctuations are controlled by the second derivative of the free energy with respect to the density. At the critical point, this derivative is zero, leading to large fluctuations. The effect of density fluctuations is that light of all wavelengths is scattered, making the fluid look milky white. Einstein relates this to Rayleigh scattering, which is what happens when the fluctuation size is much smaller than the wavelength, and which explains why the sky is blue. Einstein quantitatively derived critical opalescence from a treatment of density fluctuations, and demonstrated how both the effect and Rayleigh scattering originate from the atomistic constitution of matter.
+
+Nonuniform chains
+If the density of the chain is variable then the analysis above can be adapted to produce equations for the curve given the density, or given the curve to find the density.Following Routh Art. 450",0.625,local,which of the following is correct? what is the liouville density? among the listed options.,3988463462
+1807,Pick the best possible answer: What was the aim of the Gravity Probe B (GP-B) mission?,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"On the American late-night live television sketch comedy and variety show Saturday Night Live (SNL), a commercial advertisement parody is commonly shown after the host's opening monologue. Many of the parodies were produced by James Signorelli.  The industries, products, and ad formats targeted by the parodies have been wide-ranging, including fast food, beer, feminine hygiene products, toys, clothes, medications (both prescription and over-the-counter), financial institutions, automobiles, electronics, appliances, public-service announcements, infomercials, and movie & TV shows (including SNL itself).
+Many of SNL's ad parodies have been featured in prime-time clip shows over the years, including an April 1991 special hosted by Kevin Nealon and Victoria Jackson, as well as an early 1999 follow-up hosted by Will Ferrell that features his attempts to audition for a feminine hygiene commercial.  In late 2005 and in March 2009, the special was modernized, featuring commercials created sinc",0.09090909090909091,live_api,pick the best possible answer: what was the aim of the gravity probe b (gp-b) mission?,2871629058
+1808,Choose the correct answer: What is indirect photophoresis? carefully.,"Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a random direction.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in the same direction as the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light only on the irradiated side, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.","Indirect photophoresis is a phenomenon that occurs when particles absorb incident light uniformly, creating a temperature gradient within the particle, and causing a migration of particles in a direction opposite to the surface temperature gradient.",D,No match found.,0.0,live_api,choose the correct answer: what is indirect photophoresis? carefully.,1252077687
+1809,Identify the correct statement: What is the reason that it is nearly impossible to see light emitted at the Lyman-alpha transition wavelength from a star farther than a few hundred light years from Earth? among the listed options.,"Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the charged components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic helium, which has a typical absorption wavelength of about 121.5 nanometers, the Lyman-alpha transition.","Far ultraviolet light is absorbed effectively by the neutral components of the ISM, including atomic hydrogen, which has a typical absorption wavelength of about 212.5 nanometers, the Lyman-alpha transition.",B,No match found.,0.0,live_api,identify the correct statement: what is the reason that it is nearly impossible to see light emitted at the lyman-alpha transition wavelength from a star farther than a few hundred light years from earth? among the listed options.,800173388
+1810,What did Fresnel predict and verify with regards to total internal reflections?,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.125,live_api,what did fresnel predict and verify with regards to total internal reflections?,1970580709
+1811,Choose the correct answer: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? among the listed options.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,choose the correct answer: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? among the listed options.,699951023
+1812,Select the most accurate option: What is the interpretation of supersymmetry in stochastic supersymmetric principle?,Supersymmetry is a type of hydromagnetic dynamo that arises when the magnetic field becomes strong enough to affect the fluid motions.,Supersymmetry is a measure of the amplitude of the dynamo in the induction equation of the kinematic approximation.,Supersymmetry is a measure of the strength of the magnetic field in the induction equation of the kinematic dynamo.,Supersymmetry is a property of deterministic chaos that arises from the continuity of the flow in the model's phase space.,"Supersymmetry is an intrinsic property of all stochastic differential equations, and it preserves continuity in the model's phase space via continuous time flows.",E,No match found.,0.0,live_api,select the most accurate option: what is the interpretation of supersymmetry in stochastic supersymmetric principle?,3761908889
+1813,Choose the correct answer: What is the purpose of the proximity-focusing design in a RICH detector?,"To emit a cone of Askaryan radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a large distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Cherenkov light that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.","To emit a cone of Bremsstrahlung radiation that traverses a small distance and is detected on the photon detector plane, creating a ring of light whose radius is defined by the Cherenkov emission angle and the proximity gap.",D,"The audio signal goes to a 4.5 MHz amplifier. This amplifier prepares the signal for the 4.5 MHz detector. It then goes through a 4.5 MHz IF transformer to the detector. In television, there are 2 ways of detecting FM signals. One way is by the ratio detector. This is simple but very hard to align. The next is a relatively simple detector. This is the quadrature detector. It was invented in 1954. The first tube designed for this purpose was the 6BN6 type. It is easy to align and simple in circuitry. It was such a good design that it is still being used today in the Integrated circuit form. After the detector, it goes to the audio amplifier.
+
+Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.
+
+The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.",0.7777777777777778,local,choose the correct answer: what is the purpose of the proximity-focusing design in a rich detector?,1142810488
+1814,Select the most accurate option: What is the Peierls bracket in canonical quantization? among the listed options.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization procedure.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization approach.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization technique that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization procedure.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization approach.,C,No match found.,0.0,live_api,select the most accurate option: what is the peierls bracket in canonical quantization? among the listed options.,1331948397
+1815,"Identify the correct statement: What is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? carefully.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have similar power density, which means that the same amount of power can be obtained from power plants occupying similar areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have high power density, which means large power can be drawn from power plants occupying relatively small areas. Renewable energy sources have power density at least three orders of magnitude smaller and, for the same energy output, they need to occupy accordingly larger areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy structure, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Renewable energy sources have higher power density than non-renewable energy sources, which means that they can produce more power from power plants occupying smaller areas.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Fossil fuels and nuclear power have low power density, which means that they need to occupy larger areas to produce the same amount of power as renewable energy sources.","Power density is a measure of the amount of power obtained per unit of Earth surface area used by a specific energy mechanism, including all supporting infrastructure, manufacturing, mining of fuel (if applicable) and decommissioning. Both renewable and non-renewable energy sources have low power density, which means that they need to occupy larger areas to produce the same amount of power.",B,"China is the world's leading investor in renewable energy and its commercialization, with $546 billion invested in 2022; it the world's leading manufacturer and innovator of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years. In 2024, 58.2% of China's electricity came from coal (largest producer in the world), 13.5% from hydroelectric power (largest), 9.8% from wind (largest), 8.3% from solar energy (largest), 4.4% from nuclear energy (second-largest), 3% from natural gas (fifth-largest), and 2.1% from bioenergy (largest); in total, 38% of China's energy came from clean energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been the largest importer of Russian crude oil in 2022.
+
+Following a Greenpeace protest, Apple released a statement on April 17, 2012, committing to ending its use of coal and shifting to 100% renewable clean energy. By 2013, Apple was using 100% renewable energy to power their data centers. Overall, 75% of the company's power came from clean renewable sources.
+
+In terms of power infrastructure in Botswana, the country produces coal for electricity and imports oil. Recently, the country has taken a large interest in renewable energy sources and has designed a comprehensive strategy to attract investors in the wind, solar and biomass renewable energy industries. Botswana's power stations include Morupule B Power Station (600 MW), Morupule A Power Station (132 MW), Orapa Power Station (90 MW), Phakalane Power Station (1.3 MW) and Mmamabula Power Station (300 MW), which is expected to be online in the near future. A 200-MW solar power plant is in the planning and design stage at the Ministry of Mineral Resources, Green Technology and Energy Security..",0.4,local,"identify the correct statement: what is power density in the context of energy structures, and how does it differ between renewable and non-renewable energy sources? carefully.",3395327329
+1816,Determine the correct option: What is a magnetic monopole in particle physics? carefully.,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.",0.5,local,determine the correct option: what is a magnetic monopole in particle physics? carefully.,829063450
+1817,Pick the best possible answer: What is an order parameter?,An order parameter is a measure of the temperature of a physical framework.,An order parameter is a measure of the gravitational force in a physical framework.,An order parameter is a measure of the magnetic field strength in a physical structure.,An order parameter is a measure of the degree of symmetry breaking in a physical mechanism.,An order parameter is a measure of the rotational symmetry in a physical framework.,D,"Where  is the first order virial parameter and it depends on the temperature,  is the second order virial parameter of Morse oscillator and it depends on the  parameters of Morse oscillator in addition to the absolute temperature.  is the fractional volume of the system.",0.3333333333333333,local,pick the best possible answer: what is an order parameter?,2816680070
+1818,Determine the correct option: What is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,No match found.,0.0,live_api,determine the correct option: what is the fate of a carbocation formed in crystalline naphthalene? based on the given context.,2198182969
+1819,Pick the best possible answer: What is the Optical Signal-to-Noise Ratio (OSNR)? among the listed options.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in mechanisms where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.3333333333333333,local,pick the best possible answer: what is the optical signal-to-noise ratio (osnr)? among the listed options.,3600788092
+1820,Identify the correct statement: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? from the following choices.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.
+
+Although supermassive black holes are expected to be found in most AGN, only some galaxies' nuclei have been more carefully studied in attempts to both identify and measure the actual masses of the central supermassive black hole candidates. Some of the most notable galaxies with supermassive black hole candidates include the Andromeda Galaxy, Messier 32, Messier 87, the Sombrero Galaxy, and the Milky Way itself.",0.6428571428571429,local,identify the correct statement: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? from the following choices.,1543988576
+1821,"Pick the best possible answer: What is the estimated redshift of CEERS-93316, a candidate high-redshift galaxy observed by the James Webb Space Telescope? carefully.","Approximately z = 6.0, corresponding to 1 billion years after the Big Bang.","Approximately z = 16.7, corresponding to 235.8 million years after the Big Bang.","Approximately z = 3.0, corresponding to 5 billion years after the Big Bang.","Approximately z = 10.0, corresponding to 13 billion years after the Big Bang.","Approximately z = 13.0, corresponding to 30 billion light-years away from Earth.",B,"Further support for the PBH hypothesis has emerged from James Webb Space Telescope (JWST) observations of the high-redshift universe (z > 7). JWST discovered unexpected populations of ""Little Red Dots"" (LRDs, compact very high redshift objects) and ""overmassive black hole galaxies"" such as UHZ1 and GHZ2, which contain supermassive black holes appearing less than 500 million years after the Big Bang and outweighing their galaxy's stars. These active galactic nuclei challenge standard models of accretion from ""light"" stellar black hole seeds, and suggest ""heavy seeds"" formed via direct collapse or PBHs, which could account for a significant fraction of dark matter halos.",0.4117647058823529,local,"pick the best possible answer: what is the estimated redshift of ceers-93316, a candidate high-redshift galaxy observed by the james webb space telescope? carefully.",165517500
+1822,Identify the correct statement: What was the aim of the Gravity Probe B (GP-B) mission? carefully.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,"Jarnail Singh Bhindranwale (Punjabi: [d͡ʒəɾnɛːlə̆ sɪ́ŋɡə̆ pɪ̀ɳɖrãːʋaːɭe]; born Jarnail Singh Brar; 2 June 1947– 6 June 1984) was a Sikh militant. After Operation Bluestar, he posthumously became the leading figure for the Khalistan movement, although he did not personally advocate for a separate Sikh nation.
+He was the fourteenth jathedar or leader, of the prominent orthodox Sikh religious institution Damdami Taksal. An advocate of the Anandpur Sahib Resolution, he gained significant attention after his involvement in the 1978 Sikh-Nirankari clash. In the summer of 1982, Bhindranwale and the Akali Dal launched the Dharam Yudh Morcha (""righteous campaign""), with its stated aim being the fulfilment of a list of demands based on the Anandpur Sahib Resolution to create a largely autonomous state within India. Thousands of people joined the movement in the hope of retaining a larger share of irrigation water and the return of Chandigarh to Punjab. There was dissatisfaction in some sections",0.18181818181818182,live_api,identify the correct statement: what was the aim of the gravity probe b (gp-b) mission? carefully.,561220492
+1823,Select the most accurate option: What is the relationship between the Wigner function and the density matrix operator?,"The Wigner function W(x, p) is the Wigner transform of the density matrix operator ρ̂, and the trace of an operator with the density matrix Wigner-transforms to the equivalent phase-space integral overlap of g(x,p) with the Wigner function.","The Wigner function W(x, p) is a source function used for the density matrix operator ρ̂ and the product of these two functions creates the phase space wave function g(x, p).","The Wigner function W(x, p) is the derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.","The Wigner function W(x, p) represents the Hamiltonian H(x,p) of the density matrix operator ρ̂, while the Moyal bracket {{⋅, ⋅}} represents the Poisson bracket in the phase space.","The Wigner function W(x, p) is the time derivative of the density matrix operator ρ̂ with respect to the phase space coordinate.",A,"In quantum statistical mechanics, the concept of entropy was developed by John von Neumann and is generally referred to as ""von Neumann entropy"":where  is the density matrix,  is the trace operator and  is the Boltzmann constant.
+
+The relationship between the angular momentum operator and the rotation operators is the same as the relationship between Lie algebras and Lie groups in mathematics. The close relationship between angular momentum and rotations is reflected in Noether's theorem that proves that angular momentum is conserved whenever the laws of physics are rotationally invariant.
+
+Wigner received a request from Arnold Sommerfeld to work at the University of Göttingen as an assistant to the great mathematician David Hilbert. This proved a disappointment, as the aged Hilbert's abilities were failing, and his interests had shifted to logic. Wigner nonetheless studied independently. He laid the foundation for the theory of symmetries in quantum mechanics and in 1927 introduced what is now known as the Wigner D-matrix. Wigner and Hermann Weyl were responsible for introducing group theory into quantum mechanics. The latter had written a standard text, Group Theory and Quantum Mechanics (1928), but it was not easy to understand, especially for younger physicists. Wigner's Group Theory and Its Application to the Quantum Mechanics of Atomic Spectra (1931) made group theory accessible to a wider audience.",0.5454545454545454,local,select the most accurate option: what is the relationship between the wigner function and the density matrix operator?,422950492
+1824,Pick the best possible answer: What is Martin Heidegger's view on the relationship between time and human existence? among the listed options.,"Martin Heidegger believes that humans exist within a time continuum that is infinite and does not have a defined beginning or end. The relationship to the past involves acknowledging it as a historical era, and the relationship to the future involves creating a world that will endure beyond one's own time.","Martin Heidegger believes that humans do not exist inside time, but that they are time. The relationship to the past is a present awareness of having been, and the relationship to the future involves anticipating a potential possibility, task, or engagement.","Martin Heidegger does not believe in the existence of time or that it has any effect on human consciousness. The relationship to the past and the future is insignificant, and human existence is solely based on the present.",Martin Heidegger believes that the relationship between time and human existence is cyclical. The past and present are interconnected and the future is predetermined. Human beings do not have free will.,"Martin Heidegger believes that time is an illusion, and the past, present, and future are all happening simultaneously. Humans exist outside of this illusion and are guided by a higher power.",B,"Rationality is the quality of being guided by or based on reason. In this regard, a person acts rationally if they have a good reason for what they do, or a belief is rational if it is based on strong evidence. This quality can apply to an ability, as in a rational animal, to a psychological process, like reasoning, to mental states, such as beliefs and intentions, or to persons who possess these other forms of rationality. A thing that lacks rationality is either arational, if it is outside the domain of rational evaluation, or irrational, if it belongs to this domain but does not fulfill its standards.
+There are many discussions about the essential features shared by all forms, or accounts, of rationality. According to reason-responsiveness accounts, to be rational is to be responsive to reasons. For example, dark clouds are a reason for taking an umbrella, which is why it is rational for an agent to do so in response. An important rival to this approach are coherence-based accounts,",0.0,live_api,pick the best possible answer: what is martin heidegger's view on the relationship between time and human existence? among the listed options.,1627777360
+1825,"Choose the correct answer: Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields?","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.
+
+The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.",0.5,local,"choose the correct answer: which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields?",1538233110
+1826,Which of the following is correct? What is the Evans balance?,"The Evans balance is a mechanism used to measure the change in weight of a sample when an electromagnet is turned on, which is proportional to the susceptibility.",The Evans balance is a framework used to measure the dependence of the NMR frequency of a liquid sample on its shape or orientation to determine its susceptibility.,The Evans balance is a structure used to measure the magnetic field distortion around a sample immersed in water inside an MR scanner to determine its susceptibility.,The Evans balance is a framework used to measure the susceptibility of a sample by measuring the force change on a strong compact magnet upon insertion of the sample.,"The Evans balance is a framework used to measure the magnetic susceptibility of most crystals, which is not a scalar quantity.",D,"The person in an organisation who is employed to perform bookkeeping functions is usually called the bookkeeper (or book-keeper). They usually write the daybooks (which contain records of sales, purchases, receipts, and payments), and document each financial transaction, whether cash or credit, into the correct daybook—that is, petty cash book, suppliers ledger, customer ledger, etc.—and the general ledger. Thereafter, an accountant can create financial reports from the information recorded by the bookkeeper. The bookkeeper brings the books to the trial balance stage, from which an accountant may prepare financial reports  for the organisation, such as the income statement and balance sheet.
+
+Solo activities 
+While Cernan and Schmitt were on the lunar surface, Evans remained alone in the CSM in lunar orbit and was assigned a number of observational and scientific tasks to perform while awaiting the return of his crewmates. In addition to the operation of the various orbital science equipment contained in the CSM's SIM bay, Evans conducted both visual and photographic observation of surface features from his aerial vantage point. The orbit of the CSM having been modified to an elliptical orbit in preparation for the LM's departure and eventual descent, one of Evans' solo tasks in the CSM was to circularize its orbit such that the CSM would remain at approximately the same distance above the surface throughout its orbit. Evans observed geological features visible to him and used handheld cameras to record certain visual targets. Evans also observed and sketched the solar corona at ""sunrise"", or the period of time during which the CSM would pass from the darkened portion of the Moon to the illuminated portion when the Moon itself mostly obscured the sun. To photograph portions of the surface that were not illuminated by the sun while Evans passed over them, Evans relied in conjunction on exposure and Earthlight. Evans photographed such features as the craters Eratosthenes and Copernicus, as well as the vicinity of Mare Orientale, using this technique. According to the Apollo 17 Mission Report, Evans was able to capture all scientific photographic targets, as well as some other targets of interest.
+
+While the conflicts in the three kingdoms of England, Scotland and Ireland had similarities, each had its own specific issues and objectives. The First English Civil War was fought primarily over the correct balance of power between Parliament and Charles I. It ended in June 1646 with Royalist defeat and the king in custody.",0.8,local,which of the following is correct? what is the evans balance?,4221340512
+1827,"Identify the correct statement: Who proposed the concept of ""maximal acceleration""? from the following choices.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"Loop quantum gravity (LQG) is a theory of quantum gravity that incorporates matter of the Standard Model into the framework established for the intrinsic quantum gravity case.
+It is an attempt to develop a quantum theory of gravity based directly on Albert Einstein's geometric formulation, general relativity. As a theory, LQG postulates that the structure of space and time is composed of finite loops woven into an extremely fine fabric or network. These networks of loops are called spin networks. The evolution of a spin network, or spin foam, has a scale on the order of a Planck length, approximately 10−35 meters, and smaller scales are meaningless. Consequently, not just matter, but space itself, prefers an atomic structure.
+The areas of research, which involve about 30 research groups worldwide, share the basic physical assumptions and the mathematical description of quantum space. Research has evolved in two directions: the more traditional canonical loop quantum gravity, and the ne",0.0,live_api,"identify the correct statement: who proposed the concept of ""maximal acceleration""? from the following choices.",1450779353
+1828,Which of the following is correct? What are the constituents of cold dark matter? among the listed options.,"They are unknown, but possibilities include large objects like MACHOs or new particles such as WIMPs and axions.",They are known to be black holes and Preon stars.,They are only MACHOs.,They are clusters of brown dwarfs.,They are new particles such as RAMBOs.,A,"In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter, 26.8% dark matter, and 68.2% a form of energy known as dark energy. Thus, dark matter constitutes 85% of the total mass, while dark energy and dark matter constitute 95% of the total mass–energy content. While the density of dark matter is significant in the halo around a galaxy, its local density in the Solar System is much less than normal matter. The total of all the dark matter out to the orbit of Neptune would add up about 1017 kg, the same as a large asteroid. Dark matter is classified as ""cold"", ""warm"", or ""hot"" according to velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.
+
+Dark matter can be divided into cold, warm, and hot categories. These categories refer to velocity rather than an actual temperature, and indicate how far corresponding objects moved due to random motions in the early universe, before they slowed due to cosmic expansion. This distance is called the free streaming length. The categories of dark matter are set with respect to the size of the collection of mass prior to structure formation that later collapses to form a dwarf galaxy. This collection of mass is sometimes called a protogalaxy. Dark matter particles are classified as cold, warm, or hot if their free streaming length is much smaller (cold), similar to (warm), or much larger (hot) than the protogalaxy of a dwarf galaxy. Mixtures of the above are also possible: a theory of mixed dark matter was popular in the mid-1990s, but was rejected following the discovery of dark energy.
+
+After the recombination epoch, the slightly denser regions of the uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today. The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter (CDM), warm dark matter, hot dark matter, and baryonic matter. The best measurements available, from the Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold. This CDM is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about 4.6%. (See Table 8.)",0.5,local,which of the following is correct? what are the constituents of cold dark matter? among the listed options.,3517413597
+1829,Identify the correct statement: What is a magnetic monopole in particle physics?,A hypothetical elementary particle that is an isolated electric charge with both positive and negative poles.,A hypothetical elementary particle that is an isolated magnet with no magnetic poles.,"A hypothetical elementary particle that is an isolated electric charge with only one electric pole, either a positive pole or a negative pole.",A hypothetical elementary particle that is an isolated magnet with both north and south poles.,"A hypothetical elementary particle that is an isolated magnet with only one magnetic pole, either a north pole or a south pole.",E,"Monopole problem
+In 1978, Zeldovich noted the magnetic monopole problem, which was an unambiguous quantitative version of the horizon problem, this time in a subfield of particle physics, which led to several speculative attempts to resolve it. In 1980, Alan Guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose a scalar-driven inflation. Starobinsky's and Guth's scenarios both predicted an initial de Sitter phase, differing only in mechanistic details.
+
+External magnetic fields
+In experimental condensed matter physics, external magnetic fields act as thermodynamic variables that control the state, phase transitions and properties of material systems.  Nuclear magnetic resonance (NMR) is a method by which external magnetic fields are used to find resonance modes of individual nuclei, thus giving information about the atomic, molecular, and bond structure of their environment. NMR experiments can be made in magnetic fields with strengths up to 60 tesla.  Higher magnetic fields can improve the quality of NMR measurement data. Quantum oscillations is another experimental method where high magnetic fields are used to study material properties such as the geometry of the Fermi surface.  High magnetic fields will be useful in experimental testing of the various theoretical predictions such as the quantized magnetoelectric effect, image magnetic monopole, and the half-integer quantum Hall effect.
+
+Stable magnetic monopoles are a problem for Grand Unified Theories, which propose that at high temperatures (such as in the early universe), the electromagnetic force, strong, and weak nuclear forces are not actually fundamental forces but arise due to spontaneous symmetry breaking from a single gauge theory. These theories predict a number of heavy, stable particles that have not been observed in nature. The most notorious is the magnetic monopole, a kind of stable, heavy ""charge"" of magnetic field.",0.5714285714285714,local,identify the correct statement: what is a magnetic monopole in particle physics?,3226817033
+1830,Identify the correct statement: What is the main sequence in astronomy? carefully.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar structure.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+The main use of diacritics in Latin script is to change the sound-values of the letters to which they are added. Historically, English has used the diaeresis diacritic to indicate the correct pronunciation of ambiguous words, such as ""coöperate"", without which the <oo> letter sequence could be misinterpreted to be pronounced . Other examples are the acute and grave accents, which can indicate that a vowel is to be pronounced differently from what is  normal in that position, for example not reduced to /ə/ or silent as in the case of the two uses of the letter e in the noun résumé (as opposed to the verb resume) and the help sometimes provided in the pronunciation of some words such as doggèd, learnèd, blessèd, and especially words pronounced differently than normal in poetry (for example movèd, breathèd).
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.",0.7142857142857143,local,identify the correct statement: what is the main sequence in astronomy? carefully.,947740868
+1831,Identify the correct statement: What is the role of IL-10 in the formation of Tr1 cells and tolerogenic DCs?,"IL-10 inhibits the formation of Tr1 cells and tolerogenic DCs, which are dependent on TGF-β and Tregs. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce TGF-β that is essential for Tr1 formation.","IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and TGF-β, but differ from Tregs by lacking expression of Foxp3. Tr1 cells produce high levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.",IL-10 has no role in the formation of Tr1 cells and tolerogenic DCs. TGF-β and Tregs are the only factors involved in the formation of Tr1 cells and tolerogenic DCs.,"IL-10 induces the formation of Tr1 cells and tolerogenic DCs, which are dependent on IL-10 and Tregs, but differ from Tregs by expressing Foxp3. Tr1 cells produce low levels of IL-10 and TGF-β, while tolerogenic DCs produce IL-10 that is significant for Tr1 formation.","IL-10 induces the formation of Tregs, which are dependent on TGF-β and Foxp3. Tr1 cells and tolerogenic DCs are not involved in this process.",B,"The study of the primordial soup: Researchers are investigating the conditions and ingredients that were present on the early Earth that could have led to the formation of the first living organisms, such as the presence of water and organic molecules, and how these ingredients could have led to the formation of the first living organisms. This includes the role of water in the formation of the first cells and in catalysing chemical reactions.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+The fas receptor  (First apoptosis signal) – (also known as Apo-1 or CD95) is a transmembrane protein of the TNF family which binds the Fas ligand (FasL). The interaction between Fas and FasL results in the formation of the death-inducing signaling complex (DISC), which contains the FADD, caspase-8 and caspase-10. In some types of cells (type I), processed caspase-8 directly activates other members of the caspase family, and triggers the execution of apoptosis of the cell. In other types of cells (type II), the Fas-DISC starts a feedback loop that spirals into increasing release of proapoptotic factors from mitochondria and the amplified activation of caspase-8.",0.5454545454545454,local,identify the correct statement: what is the role of il-10 in the formation of tr1 cells and tolerogenic dcs?,4285387201
+1832,"Choose the correct answer: What is the reason behind the designation of Class L dwarfs, and what is their color and composition?","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"The House of Lords is the upper house of the Parliament of the United Kingdom. Like the lower house, the House of Commons, it meets in the Palace of Westminster in London, England. Its origins lie in the early 11th century and the emergence of bicameralism in the 14th century.
+Unlike the House of Commons, membership of the Lords is not acquired by election. Most members are appointed for life as peers, on either a political or non-political basis. The House of Lords also includes up to 26 archbishops and bishops of the Church of England, known as Lords Spiritual. Since 2014, membership may be voluntarily relinquished or terminated upon expulsion. 
+For much of its history, hereditary peers also were members of the House of Lords, and indeed made up the majority of the body's membership for most of that period. Between 1999 and 2026, hereditary membership was limited to 92 excepted hereditary peers, then abolished altogether in 2026.
+As the upper house of Parliament, the House of Lords h",0.0,live_api,"choose the correct answer: what is the reason behind the designation of class l dwarfs, and what is their color and composition?",2498854864
+1833,Identify the correct statement: What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors?,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.2727272727272727,local,identify the correct statement: what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors?,699096129
+1834,Pick the best possible answer: What is the propagation constant in sinusoidal waves? among the listed options.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,No match found.,0.0,live_api,pick the best possible answer: what is the propagation constant in sinusoidal waves? among the listed options.,1355330652
+1835,Choose the correct answer: What is the identity operation in symmetry groups? carefully.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"The clash between order and chaos, and the people caught in between, plays an important role in Babylon 5. The conflict between two unimaginably powerful older races, the Vorlons and the Shadows, is represented as a battle between competing ideologies, each seeking to turn the humans and the other younger races to their beliefs. The Vorlons represent an authoritarian philosophy of unquestioning obedience. Vorlon characters frequently ask, ""who are you?"" focusing on identity as a catalyst for shaping personal goals; the intention is not to solicit a correct answer, but to ""tear down the artifices we construct around ourselves until we're left facing ourselves, not our roles."" The Shadows represent another authoritarian philosophy cloaked in a disguise of evolution through fire, of fomenting conflict in order to promote evolutionary progress. Characters affiliated with the Shadows repeatedly ask, ""what do you want?"" emphasising personal desire and ambition, using it to shape identity, encouraging conflict between groups who choose to serve their own glory or profit. The representation of order and chaos was informed by the Babylonian myth that the universe was born in the conflict between both. The climax of this conflict comes with the younger races' exposing of the Vorlons' and the Shadows' ""true faces"" and the rejection of both philosophies, heralding the dawn of a new age without their interference.",0.625,local,choose the correct answer: what is the identity operation in symmetry groups? carefully.,1160469055
+1836,"Select the most accurate option: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000?","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"A topological map is a very general type of map, the kind one might sketch on a napkin. It often disregards scale and detail in the interest of clarity of communicating specific route or relational information. Beck's London Underground map is an iconic example. Although the most widely used map of ""The Tube,"" it preserves little of reality: it varies scale constantly and abruptly, it straightens curved tracks, and it contorts directions. The only topography on it is the River Thames, letting the reader know whether a station is north or south of the river. That and the topology of station order and interchanges between train lines are all that is left of the geographic space. Yet those are all a typical passenger wishes to know, so the map fulfills its purpose.
+
+Reporting large ratios 
+The logarithmic scale nature of the decibel means that a very large range of ratios can be represented by a convenient number. For example, 50 dB is easier to say than ""the two powers bear a 100,000 to 1 ratio"" or that ""one power is 10 the other"". Decibels express huge changes of a quantity with few digits of dB.
+
+As it originated from a need to express power ratios, two principal types of scaling of the decibel are used to provide consistency depending on whether the scaling refers to ratios of power quantities or root-power quantities. When expressing a power ratio, the corresponding change in decibels is defined as ten times the logarithm with base 10 of that ratio. That is, a change in power by a factor of 10 corresponds to a 10 dB change in level. When expressing root-power ratios, a change in amplitude by a factor of 10 corresponds to a 20 dB change in level. The decibel scales differ by a factor of two, so that the related power and root-power levels change by the same value in linear systems, where power is proportional to the square of amplitude.",0.7142857142857143,local,"select the most accurate option: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000?",1346175482
+1837,Determine the correct option: Who shared the other half of the Nobel Prize with Yoichiro Nambu for discovering the origin of the explicit breaking of CP symmetry in the weak interactions?,Richard Feynman and Julian Schwinger,Makoto Kobayashi and Toshihide Maskawa,Steven Weinberg and Sheldon Glashow,Peter Higgs and Francois Englert,Murray Gell-Mann and George Zweig,B,"Accolades
+Nobel Prize
+Eleven Nobel Prizes have been awarded for work completed at Bell Laboratories.
+ 1937: Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
+ 1956: John Bardeen, Walter H. Brattain, and William Shockley received the Nobel Prize in Physics for inventing the first transistors.
+ 1977: Philip W. Anderson shared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
+ 1978: Arno A. Penzias and Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovering cosmic microwave background radiation, a nearly uniform glow that fills the Universe in the microwave band of the radio spectrum.
+ 1997: Steven Chu shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
+ 1998: Horst Störmer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for discovering and explaining the fractional quantum Hall effect.
+ 2009: Willard S. Boyle, George E. Smith shared the Nobel Prize in Physics with Charles K. Kao. Boyle and Smith were cited for inventing charge-coupled device (CCD) semiconductor imaging sensors.
+ 2014: Eric Betzig shared the Nobel Prize in Chemistry for his work in super-resolved fluorescence microscopy which he began pursuing while at Bell Labs.
+ 2018: Arthur Ashkin shared the Nobel Prize in Physics for his work on ""the optical tweezers and their application to biological systems"" which was developed at Bell Labs.
+ 2023: Louis Brus shared the Nobel Prize in Chemistry for his work in ""the discovery and synthesis of quantum dots"" which he began at Bell Labs.
+ 2024: John Hopfield shared the Nobel Prize in Physics for his work in artificial networks for machine learning.
+
+In 1956, Tsung-Dao Lee and Chen Ning Yang noticed that there was no evidence that parity was conserved in weak interactions, and so they postulated that this symmetry may not be preserved by the weak force. They sketched the design for an experiment for testing conservation of parity in the laboratory. Later that year, Chien-Shiung Wu and coworkers showed experimentally that an asymmetrical beta emission from  proved that parity is not conserved in beta decay. This surprising result overturned long-held assumptions about parity and the weak force. In recognition of their theoretical work, Lee and Yang were awarded the Nobel Prize for Physics in 1957. However Wu, who was female, was not awarded the Nobel prize.
+
+Wigner was awarded the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"". The prize was shared that year, with the other half of the award divided between Maria Goeppert-Mayer and J. Hans D. Jensen. Wigner professed that he had never considered the possibility that this might occur, and added: ""I never expected to get my name in the newspapers without doing something wicked."" He also won the Franklin Medal in 1950, the Enrico Fermi award in 1958, the Atoms for Peace Award in 1959, the Max Planck Medal in 1961, the National Medal of Science in 1969, the Albert Einstein Award in 1972, the Golden Plate Award of the American Academy of Achievement in 1974, the eponymous Wigner Medal in 1978, and the Herzl Prize in 1982. In 1968 he gave the Josiah Willard Gibbs lecture.",0.5,local,determine the correct option: who shared the other half of the nobel prize with yoichiro nambu for discovering the origin of the explicit breaking of cp symmetry in the weak interactions?,2651017857
+1838,Which of the following is correct? What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? among the listed options.,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,which of the following is correct? what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? among the listed options.,1547526064
+1839,Select the most accurate option: What is the Ozma Problem? based on the given context.,The Ozma Problem is a chapter in a book that discusses the versatility of carbon and chirality in biochemistry.,"The Ozma Problem is a discussion about time invariance and reversal in particle physics, theoretical physics, and cosmology.","The Ozma Problem is a conundrum that examines whether there is any fundamental asymmetry to the universe. It concerns various aspects of atomic and subatomic physics and how they relate to mirror asymmetry and the related concepts of chirality, antimatter, magnetic and electrical polarity, parity, charge and spin.",The Ozma Problem is a measure of how symmetry and asymmetry have evolved from the beginning of life on Earth.,The Ozma Problem is a comparison between the level of a desired signal and the level of background noise used in science and engineering.,C,"Context
+The relation between the complexity classes P and NP is studied in computational complexity theory, the part of the theory of computation dealing with the resources required during computation to solve a given problem. The most common resources are time (how many steps it takes to solve a problem) and space (how much memory it takes to solve a problem).
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Computational problems 
+The decision problem that asks whether a certain string s belongs to the language of a given context-sensitive grammar G, is PSPACE-complete. Moreover, there are context-sensitive grammars whose languages are PSPACE-complete. In other words, there is a context-sensitive grammar G such that deciding whether a certain string s belongs to the language of G is PSPACE-complete (so G is fixed and only s is part of the input of the problem).An example of such a grammar, designed to solve the QSAT problem, is given in",0.5555555555555556,local,select the most accurate option: what is the ozma problem? based on the given context.,933305865
+1840,"Choose the correct answer: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? carefully.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The principle of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical mechanism can cause significant variations in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.5833333333333334,local,"choose the correct answer: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? carefully.",1562612068
+1841,Identify the correct statement: What is the Erlangen program? based on the given context.,"The Erlangen program is a technique of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on group principle and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:",0.75,local,identify the correct statement: what is the erlangen program? based on the given context.,453928292
+1842,Choose the correct answer: What is a pycnometer?,A device used to measure the density of a gas.,A device used to measure the mass of a liquid.,A device used to measure the volume of a gas.,A device used to determine the density of a liquid.,A device used to determine the volume of a liquid.,D,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.
+
+Measurement 
+A number of techniques as well as standards exist for the measurement of density of materials. Such techniques include the use of a hydrometer (a buoyancy method for liquids), hydrostatic weighing (a buoyancy method for liquids and solids), immersed body method (a buoyancy method for liquids), pycnometer (liquids and solids), air comparison pycnometer (solids), oscillating U-tube (liquids), as well as pour and tap (solids). However, each individual method or technique measures different types of density (e.g. bulk density, skeletal density, etc.), and therefore it is necessary to have an understanding of the type of density  being measured as well as the type of material in question.",0.75,local,choose the correct answer: what is a pycnometer?,4276129167
+1843,Which of the following is correct? What is the distinction between illuminance and luminance?,"Illuminance is the amount of light absorbed by a surface per unit area, while luminance is the amount of light reflected by a surface per unit area.","Illuminance is the amount of light falling on a surface per unit area, while luminance is the amount of light emitted by a source per unit area.","Illuminance is the amount of light concentrated into a smaller area, while luminance is the amount of light filling a larger solid angle.","Illuminance is the amount of light emitted by a source per unit area, while luminance is the amount of light falling on a surface per unit area.","Illuminance is the amount of light reflected by a surface per unit area, while luminance is the amount of light absorbed by a surface per unit area.",B,"Instead, the RGB signals are converted into YUV form, where the Y signal represents the luminance of the colors in the image. Because the rendering of colors in this way is the goal of both monochrome film and television systems, the Y signal is ideal for transmission as the luminance signal. This ensures a monochrome receiver will display a correct picture in black and white, where a given color is reproduced by a shade of gray that correctly reflects how light or dark the original color is.
+
+The definition depends on the distinction between simulating a mind and actually having one. Searle writes that ""according to Strong AI, the correct simulation really is a mind. According to Weak AI, the correct simulation is a model of the mind.""
+
+For the purpose of measuring illumination, the candela is not a practical unit, as it only applies to idealised point light sources, each approximated by a source small compared to the distance from which its luminous radiation is measured, also assuming that it is done so in the absence of other light sources. What gets directly measured by a light meter is incident light on a sensor of finite area, i.e. illuminance in lm/m2 (lux). However, if designing illumination from many point light sources, like light bulbs, of known approximate omnidirectionally uniform intensities, the contributions to illuminance from incoherent light being additive, it is mathematically estimated as follows. If  is the position of the ith source of uniform intensity , and  is the unit vector normal to the illuminated elemental opaque area  being measured, and provided that all light sources lie in the same half-space divided by the plane of this area,",0.8571428571428571,local,which of the following is correct? what is the distinction between illuminance and luminance?,2115158396
+1844,Determine the correct option: What is the second law of thermodynamics? among the listed options.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated structures left to spontaneous evolution can lower, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic mechanism and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"Options
+Options are octet strings of varying length. This is called Type–length–value encoding. The first octet is the option code, the second octet is the number of following octets and the remaining octets are code dependent.
+For example, the DHCP message-type option for an offer would appear as 0x35, 0x01, 0x02, where 0x35 is code 53 for ""DHCP message type"", 0x01 means one octet follows and 0x02 is the value of ""offer"".
+
+The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.",0.6666666666666666,local,determine the correct option: what is the second law of thermodynamics? among the listed options.,2097233723
+1845,Select the most accurate option: What is the Peierls bracket in canonical quantization? among the listed options.,The Peierls bracket is a mathematical symbol used to represent the Poisson algebra in the canonical quantization technique.,The Peierls bracket is a mathematical tool used to generate the Hamiltonian in the canonical quantization technique.,The Peierls bracket is a Poisson bracket derived from the action in the canonical quantization technique that converts the quotient algebra into a Poisson algebra.,The Peierls bracket is a mathematical symbol used to represent the quotient algebra in the canonical quantization procedure.,The Peierls bracket is a mathematical tool used to generate the Euler-Lagrange equations in the canonical quantization procedure.,C,No match found.,0.0,live_api,select the most accurate option: what is the peierls bracket in canonical quantization? among the listed options.,1331948397
+1846,What is Modified Newtonian Dynamics (MOND)?,MOND is a theory that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's theory of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a theory that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,"Although the astrophysics community generally accepts the existence of dark matter, a minority of astrophysicists, intrigued by specific observations that are not well explained by ordinary dark matter, argue for various modifications of the standard laws of general relativity. These include modified Newtonian dynamics (MOND), tensor–vector–scalar gravity, and entropic gravity. So far none of the proposed modified gravity theories can describe every piece of observational evidence at the same time, suggesting that even if gravity has to be modified, some form of dark matter will still be required.
+
+The last major possibility is that general relativity, the theory underpinning modern cosmology, is incorrect. General relativity is well-tested on Solar System scales, but its validity on galactic or cosmological scales has not been well proven. A suitable modification to general relativity can conceivably eliminate the need for dark matter. The best-known theories of this class are modified Newtonian dynamics (MOND) and its relativistic generalization tensor–vector–scalar gravity (TeVeS),For a review, see:  f(R) gravity,For a review, see:  negative mass, dark fluid, entropic gravity, conformal gravity, and massive gravity. Alternative theories abound.
+
+The CMB anisotropy was first discovered by COBE in 1992, though this had too coarse resolution to detect the acoustic peaks.
+After the discovery of the first acoustic peak by the balloon-borne BOOMERanG experiment in 2000, the power spectrum was precisely observed by WMAP in 2003–2012, and even more precisely by the Planck spacecraft in 2013–2015. The results support the Lambda-CDM model. The observed CMB angular power spectrum provides powerful evidence in support of dark matter, as its precise structure is well fitted by the Lambda-CDM model, but difficult to reproduce with any competing model such as modified Newtonian dynamics (MOND).",1.0,local,what is modified newtonian dynamics (mond)?,1294017003
+1847,Determine the correct option: What happens to an initially inhomogeneous physical mechanism that is isolated by a thermodynamic operation?,It will change its internal state only if it is composed of a single submechanism and has internal walls.,It will change its internal state only if it is composed of several substructures separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single substructure.,D,No match found.,0.0,live_api,determine the correct option: what happens to an initially inhomogeneous physical mechanism that is isolated by a thermodynamic operation?,760198484
+1848,Choose the correct answer: What is the purpose of measuring the Larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (SQUIDs) in ultra-low field MRI?,To measure the magnetization in the same direction as the static magnetic field in T1 relaxation.,"To create a T1-weighted image that is useful for assessing the cerebral cortex, identifying fatty tissue, and characterizing focal liver lesions.","To obtain sufficient signal quality in the microtesla-to-millitesla range, where MRI has been demonstrated recently.",To measure the independent relaxation processes of T1 and T2 in each tissue after excitation.,To change the repetition time (TR) and obtain morphological information in post-contrast imaging.,C,"Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate  pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to form images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy.
+MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long, confining tube, although ""open"" MRI designs mostly",0.13636363636363635,live_api,choose the correct answer: what is the purpose of measuring the larmor precession fields at about 100 microtesla with highly sensitive superconducting quantum interference devices (squids) in ultra-low field mri?,1390821369
+1849,What is the Josephson effect?,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.
+
+In quantum computation, information is represented by quantum bits, or qubits. The qubits may decohere quickly before useful computation is completed. This serious problem must be solved before quantum computing may be realized. To solve this problem, several promising approaches are proposed in condensed matter physics, including Josephson junction qubits, spintronic qubits using the spin orientation of magnetic materials, and the topological non-Abelian anyons from fractional quantum Hall effect states.
+
+Dynamical Casimir effect 
+The dynamical Casimir effect is the production of particles and energy from an accelerated moving mirror. This reaction was predicted by certain numerical solutions to quantum mechanics equations made in the 1970s. In May 2011 an announcement was made by researchers at the Chalmers University of Technology, in Gothenburg, Sweden, of the detection of the dynamical Casimir effect. In their experiment, microwave photons were generated out of the vacuum in a superconducting microwave resonator. These researchers used a modified SQUID to change the effective length of the resonator in time, mimicking a mirror moving at the required relativistic velocity. If confirmed this would be the first experimental verification of the dynamical Casimir effect. In March 2013 an article appeared on the PNAS scientific journal describing an experiment that demonstrated the dynamical Casimir effect in a Josephson metamaterial. In July 2019 an article was published describing an experiment providing evidence of optical dynamical Casimir effect in a dispersion-oscillating fibre. In 2020, Frank Wilczek et al., proposed a resolution to the information loss paradox associated with the moving mirror model of the dynamical Casimir effect. Constructed within the framework of quantum field theory in curved spacetime, the dynamical Casimir effect (moving mirror) has been used to help understand the Unruh effect.",1.0,local,what is the josephson effect?,3933518088
+1850,"Select the most accurate option: What is a ""coffee ring"" in physics? carefully.",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"In the field of artificial intelligence (AI), alignment aims to steer AI systems toward a person's or group's intended goals, preferences, or ethical principles. An AI system is considered aligned if it advances the intended objectives. A misaligned AI system pursues unintended objectives.
+It is often difficult for AI designers to specify the full range of desired and undesired behaviors. Therefore, the designers often use simpler proxy goals, such as gaining human approval. But proxy goals can overlook necessary constraints or reward the AI system for merely appearing aligned. AI systems may also find loopholes that allow them to accomplish their proxy goals efficiently but in unintended, sometimes harmful, ways (reward hacking).
+Advanced AI systems may develop unwanted instrumental strategies, such as seeking power or self-preservation because such strategies help them achieve their assigned final goals. Furthermore, they might develop undesirable emergent goals that could be hard to",0.0,live_api,"select the most accurate option: what is a ""coffee ring"" in physics? carefully.",2318635645
+1851,What is the relationship between the amplitude of a sound wave and its loudness?,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.7142857142857143,local,what is the relationship between the amplitude of a sound wave and its loudness?,1672815837
+1852,Identify the correct statement: What is organography? among the listed options.,Organography is the study of the stem and root of plants.,Organography is the scientific description of the structure and function of the organs of living things.,"Organography is the study of the development of organs from the ""growing points"" or apical meristems.",Organography is the study of the commonality of development between foliage leaves and floral leaves.,Organography is the study of the relationship between different organs and different functions in plants.,B,"In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+The first word of a command line is known as the ""command position"".
+Under UNIX coventionality, the first word of the command line is always some kind of command, and the rest of the words in the command line string are either options for the command, arguments for the options, or some kind of input upon which the command will operate. ""Options"" are also called ""flags"", ""switches"", or, more formally, ""operators"". When Bash attempts to locate a command for execution, the directories it searches are those listed in the  variable and the current working directory.",0.7142857142857143,local,identify the correct statement: what is organography? among the listed options.,2312402078
+1853,Select the most accurate option: What is the definition of dimension in mathematics? carefully.,"The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of degrees of freedom of a point that moves on this object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of independent parameters or coordinates needed to define the position of a point constrained to be on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an extrinsic property of the object, dependent on the dimension of the space in which it is embedded.","The dimension of an object is the number of directions in which a point can move on the object, and is an intrinsic property of the object, independent of the dimension of the space in which it is embedded.",C,"The dimension of an algebraic variety may be defined in various equivalent ways. The most intuitive way is probably the dimension of the tangent space at any Regular point of an algebraic variety. Another intuitive way is to define the dimension as the number of hyperplanes that are needed in order to have an intersection with the variety that is reduced to a finite number of points (dimension zero). This definition is based on the fact that the intersection of a variety with a hyperplane reduces the dimension by one unless if the hyperplane contains the variety.
+
+In mathematics, the dimension of an object is, roughly speaking, the number of degrees of freedom of a point that moves on this object. In other words, the dimension is the number of independent parameters or coordinates that are needed for defining the position of a point that is constrained to be on the object. For example, the dimension of a point is zero; the dimension of a line is one, as a point can move on a line in only one direction (or its opposite); the dimension of a plane is two, etc.
+
+A tesseract is an example of a four-dimensional object. Whereas outside mathematics the use of the term ""dimension"" is as in: ""A tesseract has four dimensions"", mathematicians usually express this as: ""The tesseract has dimension 4"", or: ""The dimension of the tesseract is 4"".",0.5,local,select the most accurate option: what is the definition of dimension in mathematics? carefully.,2079883049
+1854,Which of the following is correct? What is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? carefully.,Inflaton,Quanta,Scalar,Metric,Conformal cyclic cosmology,A,"In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. This enormous expansion supercooled the universe and ended when the energy content of the field driving inflation condensed into hot, dense particles, a process called reheating. Following the inflationary period, the universe continued to expand, but at a slower rate.
+
+In hybrid inflation, one scalar field is responsible for most of the energy density (thus determining the rate of expansion), while another is responsible for the slow roll (thus determining the period of inflation and its termination). Thus fluctuations in the former inflaton would not affect inflation termination, while fluctuations in the latter would not affect the rate of expansion. Therefore, hybrid inflation is not eternal. When the second (slow-rolling) inflaton reaches the bottom of its potential, it changes the location of the minimum of the first inflaton's potential, which leads to a fast roll of the inflaton down its potential, leading to termination of inflation.
+
+Motivations
+Inflation resolves several problems in Big Bang cosmology that were discovered in the 1970s.Much of the historical context is explained in . The Big Bang model successfully explained the cosmic microwave background and synthesis of primordial elements. However these successes relied on assuming initial conditions that were difficult to justify. For example, the model has no mechanism to create density fluctuation which could explain the formation of galaxies. When particle physicists took up the problem of the very early universe they immediately found additional problems. Inflation was first proposed by particle physicist Alan Guth in 1979 while investigating the problem of why no magnetic monopoles are seen today; he found that a positive-energy false vacuum would, according to general relativity, generate an exponential expansion of space. The expansion also resolves other long-standing problems including the flatness problem and the horizon problem as discussed below.",0.7142857142857143,local,which of the following is correct? what is the proposed name for the field that is responsible for cosmic inflation and the metric expansion of space? carefully.,506102242
+1855,"Pick the best possible answer: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? carefully.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"A hand axe (or handaxe or  Acheulean hand axe) is a prehistoric stone tool with two faces that is the longest-used tool in human history. It is made from stone, usually flint or chert that has been ""reduced"" and shaped from a larger piece by knapping, or hitting against another stone. They are characteristic of the lower Acheulean and middle Palaeolithic (Mousterian) periods, roughly 1.6 million years ago to about 100,000 years ago, and used by Homo erectus and other early humans, but rarely by Homo sapiens.
+Their technical name (biface) comes from the fact that the archetypical model is a generally bifacial (with two wide sides or faces) and almond-shaped (amygdaloid) lithic flake. Hand axes tend to be symmetrical along their longitudinal axis and formed by pressure or percussion. The most common hand axes have a pointed end and rounded base, which gives them their characteristic almond shape, and both faces have been knapped to remove the natural cortex, at least partially. Hand axes",0.13333333333333333,live_api,"pick the best possible answer: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? carefully.",1177282743
+1856,Pick the best possible answer: What is emissivity?,Emissivity is a measure of how well a surface resists deformation under stress.,Emissivity is a measure of how well a surface conducts heat.,Emissivity is a measure of how well a surface absorbs and emits thermal radiation.,Emissivity is a measure of how well a surface reflects visible light.,Emissivity is a measure of how well a surface absorbs and emits sound waves.,C,"The Kardashev scale (Russian: шкала Кардашёва, romanized: shkala Kardashova) is a method of measuring a civilization's level of technological advancement based on the amount of energy it is capable of harnessing and using. The measure was proposed by Soviet astronomer Nikolai Kardashev in 1964, and was named after him.
+Kardashev first outlined his scale in a paper presented at the 1964 conference that communicated findings on BS-29-76, Byurakan Conference in the Armenian SSR, which he initiated, a scientific meeting that reviewed the Soviet radio astronomy space listening program. The paper was titled ""Передача информации внеземными цивилизациями"" (""Transmission of Information by Extraterrestrial Civilizations""). Starting from a functional definition of civilization, based on the immutability of physical laws and using human civilization as a model for extrapolation, Kardashev's initial model was developed. He proposed a classification of civilizations into three types, based on the ax",0.0,live_api,pick the best possible answer: what is emissivity?,418636052
+1857,What is the origin of the radio emission observed from supernova remnants?,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,"Antlia is home to the huge Antlia Supernova Remnant, one of the largest supernova remnants in the sky.
+
+On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+In April 2003, the Supernova Legacy Survey observed a type Ia supernova, designated SNLS-03D3bb, in a galaxy approximately 4 billion light years away. According to astronomers at the University of Toronto and elsewhere, the observations of this supernova are best explained by assuming that it arose from a white dwarf that had grown to twice the mass of the Sun before exploding.",0.6666666666666666,local,what is the origin of the radio emission observed from supernova remnants?,263521476
+1858,Pick the best possible answer: What is reciprocal length or inverse length?,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.5,local,pick the best possible answer: what is reciprocal length or inverse length?,3259390484
+1859,What is the Penrose process?,"The Penrose process is a mechanism through which objects can emerge from the ergosphere with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with the same energy as they entered with, taking energy from the rotational energy of the black hole and maintaining its rotation.","The Penrose process is a mechanism through which objects can emerge from the ergosphere with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with less energy than they entered with, taking energy from the rotational energy of the black hole and speeding up its rotation.","The Penrose process is a mechanism through which objects can emerge from the event horizon with more energy than they entered with, taking extra energy from the rotational energy of the black hole and slowing down its rotation.",C,"Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole. A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei.
+
+Orchestrated objective reduction 
+Orchestrated objective reduction (Orch-OR), or the quantum theory of mind, was proposed by scientists Roger Penrose and Stuart Hameroff, and states that consciousness originates at the quantum level inside neurons. The mechanism is held to be a quantum process called objective reduction that is orchestrated by cellular structures called microtubules, which form the cytoskeleton around which the brain is built. The duo proposed that these quantum processes accounted for creativity, innovation, and problem-solving abilities. Penrose published his views in the book The Emperor's New Mind. In 2014, the discovery of quantum vibrations inside microtubules gave new life to the argument.
+
+The mechanism of formation of jets is not yet known, but several options have been proposed. One method proposed to fuel these jets is the Blandford-Znajek process, which suggests that the dragging of magnetic field lines by a black hole's rotation could launch jets of matter into space. The Penrose process, which involves extraction of a black hole's rotational energy, has also been proposed as a potential mechanism of jet propulsion.",1.0,local,what is the penrose process?,1300613590
+1860,Pick the best possible answer: What is the Kelvin-Helmholtz instability and how does it affect Earth's magnetosphere? from the following choices.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere, causing the plasma to slip past. This results in magnetic reconnection, and as the magnetic field lines break and reconnect, solar wind particles are able to enter the magnetosphere.",The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compared to a sieve because it allows solar wind particles to enter.,"The Kelvin-Helmholtz instability is a phenomenon that occurs when Earth's bow shock is about 17 kilometers (11 mi) thick and located about 90,000 kilometers (56,000 mi) from Earth.","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetic field extends in the magnetotail on Earth's nightside, which lengthwise exceeds 6,300,000 kilometers (3,900,000 mi).","The Kelvin-Helmholtz instability is a phenomenon that occurs when the magnetosphere is compressed by the solar wind to a distance of approximately 65,000 kilometers (40,000 mi) on the dayside of Earth. This results in the magnetopause existing at a distance of several hundred kilometers above Earth's surface.",A,No match found.,0.0,live_api,pick the best possible answer: what is the kelvin-helmholtz instability and how does it affect earth's magnetosphere? from the following choices.,1567922493
+1861,Select the most accurate option: What is the propagation constant in sinusoidal waves? carefully.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.0,live_api,select the most accurate option: what is the propagation constant in sinusoidal waves? carefully.,1521672358
+1862,Determine the correct option: What is the relationship between dielectric loss and the transparency of a material? carefully.,"Dielectric loss in a material can cause refraction, which can minimize the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can raise the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can boost the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.
+
+Liability for payment of an award of damages is established when the claimant proves, on the balance of probabilities, that a defendant's wrongful act caused a tangible, harm, loss or injury to the plaintiff. Once that threshold is met, the plaintiff is entitled to some amount of recovery for that loss or injury. No recovery is not an option. The court must then assess the amount of compensation attributable to the harmful acts of the defendant.See, e.g., the U.S. Supreme Court cases of  and  The amount of damages a plaintiff would recover is usually measured on a ""loss of bargain"" basis, also known as expectation loss,airSlate Legal Forms, Inc. d/b/a USLegal, Loss of Bargain Law and Legal Definition, accessed 10 December 2022 or ""economic loss"". This concept reflects the difference between ""the value of what has been received and its value as represented"".Supreme Court of Texas, Nobility Homes of Texas Inc. v. Shivers, Casetext, published 5 October 1977, accessed 10 December 2022
+
+One economist's analysis calculates that despite increased overall spending, Christmas is a deadweight loss under orthodox microeconomic theory, because of the effect of gift-giving. This loss is calculated as the difference between what the gift giver spent on the item and what the gift receiver would have paid for the item. It is estimated that in 2001, Christmas resulted in a $4billion deadweight loss in the US alone.Joel Waldfogel ""The Deadweight Loss of Christmas"" (PDF), American Economic Review, December 1993, 83 (5). Retrieved December 25, 2023.""Is Santa a deadweight loss?"" (). The Economist December 20, 2001. Because of complicating factors, this analysis is sometimes used to discuss possible flaws in current microeconomic theory. Other deadweight losses include the effects of Christmas on the environment and the fact that material gifts are often perceived as white elephants, imposing cost for upkeep and storage and contributing to clutter.Reuters. ""Christmas is Damaging the Environment, Report Says"" , December 16, 2005.",0.5,local,determine the correct option: what is the relationship between dielectric loss and the transparency of a material? carefully.,2500203937
+1863,Which of the following is correct? What is a planetary mechanism? from the following choices.,A framework of planets that are all located in the same solar framework.,A structure of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star structure.,A mechanism of planets that are all located in the same galaxy.,A structure of planets that are all made of gas.,C,"Relationship to surface bulk density
+In the event that most of the echo is from first surface reflections ( or so), the OC radar albedo is a first-order approximation of the Fresnel reflection coefficient (aka reflectivity) and can be used to estimate the bulk density of a planetary surface to a depth of a meter or so (a few wavelengths of the radar wavelength which is typically at the decimeter scale) using the following empirical relationships:
+
+On Earth, the recognition of impact craters is a branch of geology, and is related to planetary geology in the study of other worlds. Out of many proposed craters, relatively few are confirmed. The following twenty are a sample of articles of confirmed and well-documented impact sites.
+
+In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics.",0.8333333333333334,local,which of the following is correct? what is a planetary mechanism? from the following choices.,3282004651
+1864,Which of the following is correct? What is explicit symmetry breaking in theoretical physics? carefully.,"Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that do not respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that do not respect the symmetry, usually in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a principle by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are small, so that the symmetry is approximately respected by the principle.","Explicit symmetry breaking is the breaking of a symmetry of a framework by terms in its defining equations of motion that respect the symmetry, always in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the framework.","Explicit symmetry breaking is the breaking of a symmetry of a framework by terms in its defining equations of motion that respect the symmetry, usually in situations where these symmetry-breaking terms are large, so that the symmetry is not respected by the framework.",B,"After electroweak symmetry breaking 
+The Lagrangian reorganizes itself as the Higgs field acquires a non-vanishing vacuum expectation value dictated by the potential of the previous section. As a result of this rewriting, the symmetry breaking becomes manifest. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature 
+(assuming the Standard Model of particle physics).
+
+Some states of matter exhibit symmetry breaking, where the relevant laws of physics possess some form of symmetry that is broken. A common example is crystalline solids, which break continuous translational symmetry. Other examples include magnetized ferromagnets, which break rotational symmetry, and more exotic states such as the ground state of a BCS superconductor, that breaks U(1) phase rotational symmetry.
+
+Eugene Paul Wigner (, ; November 17, 1902 – January 1, 1995) was a Hungarian-American theoretical physicist who also contributed to mathematical physics. He received the Nobel Prize in Physics in 1963 ""for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles"".",0.5555555555555556,local,which of the following is correct? what is explicit symmetry breaking in theoretical physics? carefully.,1540493814
+1865,"What is a transient condensation cloud, also known as a Wilson cloud?","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the burning of materials in the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of microscopic water droplets that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to a temporary cooling of the air caused by a rarefaction of the air surrounding the explosion.","A visible cloud of gas that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in humid air, due to the release of gases from the explosion.","A visible cloud of smoke that forms when a nuclear weapon or a large amount of a conventional explosive is detonated in dry air, due to the burning of materials in the explosion.",B,"Around the beginning of the twentieth century, it was found that under certain conditions a fast-moving charged particle caused a condensation of supersaturated water vapor along its path. In 1911, Charles Wilson used this principle to devise his cloud chamber so he could photograph the tracks of charged particles, such as fast-moving electrons.
+
+A cloud storage gateway is a hybrid cloud storage device that connects a local network to one or more cloud storage services, typically object storage services such as Amazon S3. It provides a cache for frequently accessed data, providing high speed local access to frequently accessed data in the cloud storage service. Cloud storage gateways also provide additional benefits such as accessing cloud object storage through traditional file serving protocols as well as continued access to cached data during connectivity outages.
+
+Private clouds, for example, are used in cloud security to mitigate the increased attack surface area of outsourcing data storage. A private cloud is cloud infrastructure operated solely for a single organization, whether managed internally or by a third party, or hosted internally or externally.
+ Hybrid cloud storage are another cloud security solution, involving storage infrastructure that uses a combination of on-premises storage resources with cloud storage. The on-premises storage is usually managed by the organization, while the public cloud storage provider is responsible for the management and security of the data stored in the cloud. Using a hybrid model allows data to be ingested in an encrypted format where the key is held within the on-premise infrastructure and can limit access to the use of on-premise cloud storage gateways, which may have options to encrypt the data prior to transfer.
+ Cloud services are considered ""public"" when they are delivered over the public Internet.
+ A virtual private cloud (VPC) is a pool of shared resources within a public cloud that provides a certain level of isolation between the different users using the resources. VPCs achieve user isolation through the allocation of a private IP subnet and a virtual communication construct (such as a VLAN or a set of encrypted communication channels) between users as well as the use of a virtual private network (VPN) per VPC user, securing, by means of authentication and encryption, the remote access of the organization to its VPC resources.",0.6666666666666666,local,"what is a transient condensation cloud, also known as a wilson cloud?",212985231
+1866,What is magnetic susceptibility?,"Magnetic susceptibility is a measure of how much a material will absorb magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will resist magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will conduct magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will reflect magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.",B,"Diamagnetic materials, like water, or water-based materials, have a relative magnetic permeability that is less than or equal to 1, and therefore a magnetic susceptibility less than or equal to 0, since susceptibility is defined as . This means that diamagnetic materials are repelled by magnetic fields. However, since diamagnetism is such a weak property, its effects are not observable in everyday life. For example, the magnetic susceptibility of diamagnets such as water is . The most strongly diamagnetic material is bismuth, , although pyrolytic carbon may have a susceptibility of  in one plane. Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets. Because χv is derived from the ratio of the internal magnetic field to the applied field, it is a dimensionless value.
+
+In rare cases, the diamagnetic contribution can be stronger than paramagnetic contribution. This is the case for gold, which has a magnetic susceptibility less than 0 (and is thus by definition a diamagnetic material), but when measured carefully with X-ray magnetic circular dichroism, has an extremely weak paramagnetic contribution that is overcome by a stronger diamagnetic contribution.
+
+Mathematics, science, and technology
+ Charge (physics), the susceptibility (state of being affected) of a body to one of the fundamental forces
+ Color charge, a property of quarks and gluons, related to their strong interactions
+ Electric charge, a property which determines the electromagnetic interaction of subatomic particles
+ Magnetic charge, a property of theoretical magnetic monopoles
+ Charge, the air and fuel mixture fed into an internal combustion engine
+ CHARGE syndrome, a specific set of birth defects in children
+ Explosive charge, a measured quantity of explosive material
+ Signed, finitely additive measure in mathematics",1.0,local,what is magnetic susceptibility?,4028425643
+1867,Identify the correct statement: What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? based on the given context.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.21428571428571427,live_api,identify the correct statement: what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? based on the given context.,1524346568
+1868,"Identify the correct statement: What is a ""coffee ring"" in physics? among the listed options.",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"In the field of artificial intelligence (AI), alignment aims to steer AI systems toward a person's or group's intended goals, preferences, or ethical principles. An AI system is considered aligned if it advances the intended objectives. A misaligned AI system pursues unintended objectives.
+It is often difficult for AI designers to specify the full range of desired and undesired behaviors. Therefore, the designers often use simpler proxy goals, such as gaining human approval. But proxy goals can overlook necessary constraints or reward the AI system for merely appearing aligned. AI systems may also find loopholes that allow them to accomplish their proxy goals efficiently but in unintended, sometimes harmful, ways (reward hacking).
+Advanced AI systems may develop unwanted instrumental strategies, such as seeking power or self-preservation because such strategies help them achieve their assigned final goals. Furthermore, they might develop undesirable emergent goals that could be hard to",0.0,live_api,"identify the correct statement: what is a ""coffee ring"" in physics? among the listed options.",3004114893
+1869,Select the most accurate option: What is the relationship between dielectric loss and the transparency of a material? carefully.,"Dielectric loss in a material can cause refraction, which can minimize the material's transparency at higher frequencies.","Dielectric loss in a material can cause absorption, which can reduce the material's transparency at higher frequencies.","Dielectric loss in a material can cause reflection, which can enhance the material's transparency at higher frequencies.",Dielectric loss in a material has no effect on the material's transparency at any frequency.,"Dielectric loss in a material can cause scattering, which can enhance the material's transparency at higher frequencies.",B,"Because of collisions between electrons and atoms, the drift velocity of electrons in a conductor is on the order of millimeters per second. However, the speed at which a change of current at one point in the material causes changes in currents in other parts of the material, the velocity of propagation, is typically about 75% of light speed. This occurs because electrical signals propagate as a wave, with the velocity dependent on the dielectric constant of the material.",0.2727272727272727,local,select the most accurate option: what is the relationship between dielectric loss and the transparency of a material? carefully.,1572491118
+1870,Choose the correct answer: What is the SI base unit of time and how is it defined? among the listed options.,"The SI base unit of time is the week, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the second, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the hour, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the day, which is defined by measuring the electronic transition frequency of caesium atoms.","The SI base unit of time is the minute, which is defined by measuring the electronic transition frequency of caesium atoms.",B,"The arbitrary (1/683) term was chosen so that the new definition would precisely match the old definition. Although the candela is now defined in terms of the second (an SI base unit) and the watt (a derived SI unit), the candela remains a base unit of the SI system, by definition.
+
+Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
+ 1 unit of pressure = 1 unit of force / (1 unit of length)2 = 1 unit of mass / (1 unit of length × (1 unit of time)2)
+ 1 Ba = 1 g/(cm⋅s2)
+ 1 Pa = 1 kg/(m⋅s2).
+
+In the International System of Units (SI), a day not an official unit, but is accepted for use with SI. A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units. In 1967–68, during the 13th CGPM (Resolution 1), the International Bureau of Weights and Measures (BIPM) redefined a second as ""the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom"". This makes the SI-based day last exactly 794,243,384,928,000 of those periods.",0.45454545454545453,local,choose the correct answer: what is the si base unit of time and how is it defined? among the listed options.,547061499
+1871,Choose the correct answer: What is radiometric dating? among the listed options.,"Radiometric dating is a approach of measuring geological time using geological sedimentation, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using radioactive decay, discovered in the early 20th century.","Radiometric dating is a procedure of measuring geological time using the position of rocks, discovered in the early 20th century.","Radiometric dating is a technique of measuring geological time using the age of fossils, discovered in the early 20th century.","Radiometric dating is a approach of measuring geological time using the cooling of the earth, discovered in the early 20th century.",B,"The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which landed the first humans on the Moon in 1969. Apollo was conceived in 1960 in the Dwight D. Eisenhower presidency during Project Mercury and executed after Project Gemini. Apollo was later dedicated to President John F. Kennedy's national goal, ""before this decade is out, of landing a man on the Moon and returning him safely to the Earth"" in his address to the U.S. Congress on May 25, 1961.
+Kennedy's goal was accomplished on the Apollo 11 mission, when astronauts Neil Armstrong and Buzz Aldrin landed their Apollo Lunar Module (LM) on July 20, 1969, and walked on the lunar surface, while Michael Collins remained in lunar orbit in the command and service module (CSM), and all three landed safely on Earth in the Pacific Ocean on July 24. Approximately 650 million people worldwide watched this first landing on television. Five subsequent Apollo missions also landed astronauts",0.0,live_api,choose the correct answer: what is radiometric dating? among the listed options.,89852182
+1872,Which of the following is correct? What is the reason for the formation of stars exclusively within molecular clouds? among the listed options.,The formation of stars occurs exclusively outside of molecular clouds.,"The low temperatures and high densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The low temperatures and low densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and low densities of molecular clouds cause the gravitational force to exceed the internal pressures that are acting ""outward"" to prevent a collapse.","The high temperatures and high densities of molecular clouds cause the gravitational force to be less than the internal pressures that are acting ""outward"" to prevent a collapse.",B,"The rate constant, k, of this reaction depends on the temperature of the environment, with a value of  at 10 K. The rate constant was calculated from the formula . For the primary formation reaction,  and . Assuming an  abundance of and an electron abundance of 10−7 typical of molecular clouds, the formation will proceed at a rate of  in a molecular cloud of total density .
+
+Extragalactic detection 
+Ammonia has been detected in external galaxies, and by simultaneously measuring several lines, it is possible to directly measure the gas temperature in these galaxies. Line ratios imply that gas temperatures are warm (≈50 K), originating from dense clouds with sizes of tens of parsecs. This picture is consistent with the picture within our Milky Way galaxyhot dense molecular cores form around newly forming stars embedded in larger clouds of molecular material on the scale of several hundred parsecs (giant molecular clouds; GMCs).
+
+UC HII regions 
+Ultra-compact HII regions are among the best tracers of high-mass star formation. The dense material surrounding UCHII regions is likely primarily molecular. Since a complete study of massive star formation necessarily involves the cloud from which the star formed, ammonia is an invaluable tool in understanding this surrounding molecular material. Since this molecular material can be spatially resolved, it is possible to constrain the heating/ionising sources, temperatures, masses, and sizes of the regions. Doppler-shifted velocity components allow for the separation of distinct regions of molecular gas that can trace outflows and hot cores originating from forming stars.",0.5384615384615384,local,which of the following is correct? what is the reason for the formation of stars exclusively within molecular clouds? among the listed options.,1337424047
+1873,Select the most accurate option: Which mathematical function is commonly used to characterize linear time-invariant structures? among the listed options.,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,This is a glossary of logic. Logic is the study of the principles of valid reasoning and argumentation.,0.0,live_api,select the most accurate option: which mathematical function is commonly used to characterize linear time-invariant structures? among the listed options.,2716112645
+1874,Select the most accurate option: What is Modified Newtonian Dynamics (MOND)? based on the given context.,MOND is a framework that explains the behavior of light in the presence of strong gravitational fields. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Einstein's framework of general relativity to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a hypothesis that proposes a modification of Coulomb's law to account for observed properties of galaxies. It is an alternative to the hypothesis of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics.,MOND is a framework that explains the behavior of subatomic particles in the presence of strong magnetic fields. It is an alternative to the hypothesis of dark energy in terms of explaining why subatomic particles do not appear to obey the currently understood laws of physics.,C,No match found.,0.0,live_api,select the most accurate option: what is modified newtonian dynamics (mond)? based on the given context.,2403357666
+1875,Choose the correct answer: What is the relationship between Coordinated Universal Time (UTC) and Universal Time (UT1)? based on the given context.,UTC and Universal Time (UT1) are identical time scales that are used interchangeably in science and engineering.,"UTC is a time scale that is completely independent of Universal Time (UT1). UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by a non-integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".","UTC is an atomic time scale designed to approximate Universal Time (UT1), but it differs from UT1 by an integral number of seconds. UTC is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the ""leap second"".",UTC is a time scale that is based on the irregularities in Earth's rotation and is completely independent of Universal Time (UT1).,D,"The BIPM has an important role in maintaining accurate worldwide time of day. It combines, analyses, and averages the official atomic time standards of member nations around the world to create a single, official Coordinated Universal Time (UTC).
+
+Relation to UTC 
+Contrary to TAI, UTC is a discontinuous time scale. It is occasionally adjusted by leap seconds. Between these adjustments, it is composed of segments that are mapped to atomic time by a constant offset. From its beginning in 1961 through December 1971, the adjustments were made regularly in fractional leap seconds so that UTC approximated UT2.  Afterwards, these adjustments were made only in whole seconds to approximate UT1. This was a compromise arrangement in order to enable a publicly broadcast time scale. The less frequent whole-second adjustments meant that the time scale would be more stable and easier to synchronize internationally. The fact that it continues to approximate UT1 means that tasks, such as navigation, which require a source of Universal Time continue to be well served by the public broadcast of UTC.",0.46153846153846156,local,choose the correct answer: what is the relationship between coordinated universal time (utc) and universal time (ut1)? based on the given context.,2144973897
+1876,Determine the correct option: What is the second law of thermodynamics? from the following choices.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic mechanism is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated structures left to spontaneous evolution can minimize, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic mechanism and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"It follows from the second law of thermodynamics that the entropy of a system that is not isolated may decrease. An air conditioner, for example, may cool the air in a room, thus reducing the entropy of the air of that system. The heat expelled from the room (the system), which the air conditioner transports and discharges to the outside air, always makes a bigger contribution to the entropy of the environment than the decrease of the entropy of the air of that system. Thus, the total of entropy of the room plus the entropy of the environment increases, in agreement with the second law of thermodynamics.
+
+Most identities in chemical thermodynamics arise from application of the first and second laws of thermodynamics, particularly the law of conservation of energy, to these state functions.
+
+Governing equations
+Continuum mechanics deals with the behavior of materials that can be approximated as continuous for certain length and time scales.  The equations that govern the mechanics of such materials include the balance laws for mass, momentum, and energy. Kinematic relations and constitutive equations are needed to complete the system of governing equations.  Physical restrictions on the form of the constitutive relations can be applied by requiring that the second law of thermodynamics be satisfied under all conditions.  In the continuum mechanics of solids, the second law of thermodynamics is satisfied if the Clausius–Duhem form of the entropy inequality is satisfied.",0.375,local,determine the correct option: what is the second law of thermodynamics? from the following choices.,2753666245
+1877,What is the significance of the speed of light in vacuum?,The speed of light in vacuum is only relevant when measuring the one-way speed of light.,The speed of light in vacuum is only relevant when measuring the two-way speed of light.,The speed of light in vacuum is independent of the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is dependent on the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is only relevant when c appears explicitly in the units of measurement.,C,"This is the speed of light in vacuum. Thus Maxwell's equations connect the vacuum permittivity , the vacuum permeability , and the speed of light, c0, via the above equation. This relationship had been discovered by Wilhelm Eduard Weber and Rudolf Kohlrausch prior to the development of Maxwell's electrodynamics, however Maxwell was the first to produce a field theory consistent with waves traveling at the speed of light.
+
+where
+ m0 is the rest mass of the body,
+ c is the speed of light in vacuum,
+  is the rest energy.
+
+Cosmological models employing a variable speed of light have been proposed to resolve the horizon problem of and provide an alternative to cosmic inflation. In the VSL models, the fundamental constant c, denoting the speed of light in vacuum, is greater in the early universe than its present value, effectively increasing the particle horizon at the time of decoupling sufficiently to account for the observed isotropy of the CMB.",0.75,local,what is the significance of the speed of light in vacuum?,3117537285
+1878,What is the main focus of cryogenic and noble liquid detectors in dark matter experiments?,Distinguishing background particles from dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with electrons of dark matter particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to distinguish between different types of background particles.,Detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon to determine the mass and interaction cross section with nucleons of dark matter particles.,Detecting the mass and interaction cross section with nucleons of dark matter particles by detecting the heat produced when a particle hits an atom in a crystal absorber or the scintillation produced by a particle collision in liquid xenon or argon.,A,"Annual modulation and directionality 
+Despite the null results from major noble liquid and cryogenic experiments, the DAMA/NaI and DAMA/LIBRA collaborations have famously observed an annual modulation in their event rate, which they claim is due to the Earth's motion through the dark matter halo. This claim remains in tension with the negative results from the more sensitive experiments (LZ, XENON, SuperCDMS) described above.
+
+WIMP searches mostly use either cryogenic or noble liquid detector technologies. Cryogenic detectors, operating at temperatures below 100 mK, detect the heat produced when a particle hits an atom in a crystal absorber such as germanium. Experiments using this technology include SuperCDMS and EDELWEISS.
+
+Scientific research
+Liquid argon is used as the target for neutrino experiments and direct dark matter searches. The interaction between the hypothetical WIMPs and an argon nucleus produces scintillation light that is detected by photomultiplier tubes. Two-phase detectors containing argon gas are used to detect the ionized electrons produced during the WIMP–nucleus scattering. As with most other liquefied noble gases, argon has a high scintillation light yield (about 51 photons/keV), is transparent to its own scintillation light, and is relatively easy to purify. Compared to xenon, argon is cheaper and has a distinct scintillation time profile, which allows the separation of electronic recoils from nuclear recoils. On the other hand, its intrinsic beta-ray background is larger due to  contamination, unless one uses argon from underground sources, which has much less  contamination. Most of the argon in Earth's atmosphere was produced by electron capture of long-lived  ( + e− →  + ν) present in natural potassium within Earth. The  activity in the atmosphere is maintained by cosmogenic production through the knockout reaction (n,2n) and similar reactions. The half-life of  is only 269 years. As a result, the underground Ar, shielded by rock and water, has much less  contamination. Dark-matter detectors currently operating with liquid argon include DarkSide, WArP, ArDM, microCLEAN and DEAP. Neutrino experiments include ICARUS and MicroBooNE, both of which use high-purity liquid argon in a time projection chamber for fine grained three-dimensional imaging of neutrino interactions.",0.7777777777777778,local,what is the main focus of cryogenic and noble liquid detectors in dark matter experiments?,4227844097
+1879,Choose the correct answer: What is the Kutta condition? based on the given context.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem.  Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution.  Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.75,local,choose the correct answer: what is the kutta condition? based on the given context.,3417616619
+1880,Pick the best possible answer: What is linear frame dragging? carefully.,Linear frame dragging is the effect of the general principle of relativity applied to the mass of a body when other masses are placed nearby. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.,"Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to rotational momentum, which is similarly inevitable to the linear effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is similarly inevitable to the rotational effect. It is a tiny effect that is difficult to confirm experimentally and often omitted from articles on frame-dragging.","Linear frame dragging is the effect of the general principle of relativity applied to linear momentum, which is a large effect that is easily confirmed experimentally and often discussed in articles on frame-dragging.",D,"Condemned: Criminal Origins (released as simply Condemned in Europe and Australia) is a 2005 first-person action and survival horror video game for Xbox 360 and Windows. Developed by Monolith Productions and jointly published by Sega and Warner Bros. Interactive Entertainment, it was an  Xbox 360 launch title and was released in North America in November 2005, in Europe in December, and in Australia in March 2006. The Windows version was released worldwide in April 2006. Monolith also released an online episodic flash game prequel, and there were plans for a film to expand the Condemned universe, with at least three additional games already mapped out by 2005. However, the film was never made, and the only addition to the franchise was Condemned 2: Bloodshot, which was released in 2008 for Xbox 360 and PlayStation 3.
+The game tells the story of Ethan Thomas, an agent with the FBI's Serial Crime Unit (SCU). In the fictional city of Metro, there has been a surge in both serial killings a",0.0,live_api,pick the best possible answer: what is linear frame dragging? carefully.,2445711534
+1881,Identify the correct statement: What is the Droste effect? among the listed options.,The Droste effect is a type of optical illusion that creates the appearance of a three-dimensional image within a two-dimensional picture.,"The Droste effect is a type of packaging design used by a variety of products, named after a Dutch brand of cocoa, with an image designed by Jan Misset in 1904.","The Droste effect is a type of painting technique used by Dutch artist M. C. Escher in his 1956 lithograph Print Gallery, which portrays a gallery that depicts itself.","The Droste effect is a recursive image effect in which a picture appears within itself in a place where a similar picture would realistically be expected to appear. This creates a loop that can continue as far as the image's resolution allows, and is named after a Dutch brand of cocoa.",The Droste effect is a type of recursive algorithm used in computer programming to create self-referential images.,D,"Christian mysticism refers to the traditions of mysticism, mystical practices and mystical theology within Christianity which ""concerns the preparation [of the person] for, the consciousness of, and the effect of [...] a direct and transformative presence of God"" or divine love. Until the sixth century the practice of what is now called mysticism was referred to by the term contemplatio, c.q. theoria, from contemplatio (Latin; Greek θεωρία, theoria), ""looking at"", ""gazing at"", ""being aware of"" God or the divine. Christianity took up the use of both the Greek (theoria) and Latin (contemplatio, contemplation) terminology to describe various forms of prayer and the process of coming to know God.
+Contemplative practices range from simple prayerful meditation of holy scripture (i.e. Lectio Divina) to contemplation on the presence of God, resulting in theosis (spiritual union with God) and ecstatic visions of the soul's mystical union with God. Three stages are discerned in contemplative pra",0.125,live_api,identify the correct statement: what is the droste effect? among the listed options.,4263589531
+1882,Which of the following is correct? What is the definition of anatomy?,Anatomy is the rarely used term that refers to the superstructure of polymers such as fiber formation or to larger composite assemblies.,Anatomy is a branch of morphology that deals with the structure of organisms.,"Anatomy is the study of the effects of external factors upon the morphology of organisms under experimental conditions, such as the effect of genetic mutation.","Anatomy is the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.",Anatomy is the study of the relationship between the structure and function of morphological features.,B,"where the second equality is by definition of . The integral in the first term is equal to one by the definition of probability, and the second and other even terms (i.e. first and other odd moments) vanish because of space symmetry. What is left gives rise to the following relation:
+
+The thesis as a definition 
+The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. ""the correct definition of mechanical computability was established beyond any doubt by Turing"". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.
+
+The next step is to use the definition of differentiability of f at g(a). This requires a term of the form  for some k. In the above equation, the correct k varies with h. Set  and the right hand side becomes . Applying the definition of the derivative gives:",0.6,local,which of the following is correct? what is the definition of anatomy?,3019453835
+1883,Choose the correct answer: What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? carefully.,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,No match found.,0.0,live_api,choose the correct answer: what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam? carefully.,532622533
+1884,Choose the correct answer: What is a trophic level in an ecological pyramid? carefully.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecoframework.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""",0.5,local,choose the correct answer: what is a trophic level in an ecological pyramid? carefully.,4240073112
+1885,Determine the correct option: What is the metallicity of Kapteyn's star estimated to be? from the following choices.,8 times more than the Sun,8 times less than the Sun,13 light years away from Earth,Unknown,Equal to the Sun,B,"Barnard's Star has 10–32% of the solar metallicity. Metallicity is the proportion of stellar mass made up of elements heavier than helium and helps classify stars relative to the galactic population. Barnard's Star seems to be typical of the old, red dwarf population II stars, yet these are also generally metal-poor halo stars. While sub-solar, Barnard's Star's metallicity is higher than that of a halo star and is in keeping with the low end of the metal-rich disk star range; this, plus its high space motion, have led to the designation ""intermediate population II star"", between a halo and disk star. However, some recently published scientific papers have given much higher estimates for the metallicity of the star, very close to the Sun's level, between 75 and 125% of the solar metallicity.
+
+Using data from Kepler, a correlation has been found between the metallicity of a star and the probability that the star hosts a giant planet, similar to the size of Jupiter. Stars with higher metallicity are more likely to have planets, especially giant planets, than stars with lower metallicity.
+
+For most applications in astronomy (e.g., to place a star on the HR diagram or to determine the temperature of a model flux fitting an observed spectrum) the effective temperature is the quantity of interest. Various color-effective temperature relations exist in the literature. There relations also have smaller dependencies on other stellar parameters, such as the stellar metallicity and surface gravity",0.45454545454545453,local,determine the correct option: what is the metallicity of kapteyn's star estimated to be? from the following choices.,2250817656
+1886,Which of the following is correct? What is water hammer?,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing structures.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to enhance the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"Hammer  
+The last rock in an end is called the hammer, and throwing the hammer gives a team a tactical advantage. Before the game, teams typically decide who gets the hammer in the first end either by chance (such as a coin toss), by a ""draw-to-the-button"" contest, where a representative of each team shoots to see who gets closer to the centre of the rings, or, particularly in tournament settings like the Winter Olympics, by a comparison of each team's win–loss record. In all subsequent ends, the team that did not score in the preceding end gets to throw second, thus having the hammer. In the event that neither team scores, called a blanked end, the hammer remains with the same team. Naturally, it is easier to score points with the hammer than without; the team with the hammer generally tries to score two or more points. If only one point is possible, the skip may try to avoid scoring at all in order to retain the hammer the next end, giving the team another chance to use the hammer advantage to try to score two points. Scoring without the hammer is commonly referred to as stealing, or a steal, and is much more difficult.
+
+As early as 1805, Gay-Lussac and von Humboldt showed that water is formed of two volumes of hydrogen and one volume of oxygen, and by 1811 Amedeo Avogadro had arrived at the correct interpretation of water's composition, based on what is now called Avogadro's law and the assumption of diatomic elemental molecules. However, these results were mostly ignored until 1860, partly due to the belief that atoms of one element would have no chemical affinity toward atoms of the same element, and also partly due to apparent exceptions to Avogadro's law that were not explained until later in terms of dissociating molecules.
+
+Olav Hammer suggests that anthroposophy carries scientism ""to lengths unparalleled in any other Esoteric position"" due to its dependence upon claims of clairvoyant experience, its subsuming natural science under ""spiritual science"". Hammer also asserts that the development of what he calls ""fringe"" sciences such as anthroposophic medicine and biodynamic agriculture are justified partly on the basis of the ethical and ecological values they promote, rather than purely on a scientific basis.",0.6,local,which of the following is correct? what is water hammer?,3865917858
+1887,Determine the correct option: What is the 'reactive Leidenfrost effect' observed in non-volatile materials? based on the given context.,"The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above hot surfaces and move erratically, observed in volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into hot surfaces and move slowly, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles float above cold surfaces and move erratically, observed in non-volatile materials.","The 'reactive Leidenfrost effect' is a phenomenon where solid particles sink into cold surfaces and move slowly, observed in non-volatile materials.",A,No match found.,0.0,live_api,determine the correct option: what is the 'reactive leidenfrost effect' observed in non-volatile materials? based on the given context.,3749749358
+1888,Determine the correct option: What happens to an initially inhomogeneous physical mechanism that is isolated by a thermodynamic operation? based on the given context.,It will change its internal state only if it is composed of a single subframework and has internal walls.,It will change its internal state only if it is composed of several submechanisms separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single substructure.,D,No match found.,0.0,live_api,determine the correct option: what happens to an initially inhomogeneous physical mechanism that is isolated by a thermodynamic operation? based on the given context.,3005428560
+1889,Pick the best possible answer: What are the Navier-Stokes equations? among the listed options.,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.3,local,pick the best possible answer: what are the navier-stokes equations? among the listed options.,4057735004
+1890,Choose the correct answer: What is the evidence for the existence of a supermassive black hole at the center of the Milky Way galaxy? carefully.,"The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because the star S14 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S14, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S14 would collide with it. Observations of the star S2 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.","The Milky Way galaxy has a supermassive black hole at its center because of the bright flare activity observed near Sagittarius A*. The radius of the central object must be less than 6.25 light-hours, about the diameter of Uranus' orbit. Observations of the star S2 indicate that the radius is no more than 17 light-hours, because otherwise S2 would collide with it. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",The Milky Way galaxy has a supermassive black hole at its center because it is the only explanation for the bright flare activity observed near Sagittarius A* at a separation of six to ten times the gravitational radius of the candidate SMBH.,"The star S2 follows an elliptical orbit with a period of 15.2 years and a pericenter of 17 light-hours from the center of the central object. From the motion of star S2, the object's mass can be estimated as 4.0 million M☉, or about 7.96×1036 kg. The radius of the central object must be less than 17 light-hours, because otherwise S2 would collide with it. Observations of the star S14 indicate that the radius is no more than 6.25 light-hours, about the diameter of Uranus' orbit. No known astronomical object other than a black hole can contain 4.0 million M☉ in this volume of space.",E,"In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A*, was likely a supermassive black hole.
+
+Although supermassive black holes are expected to be found in most AGN, only some galaxies' nuclei have been more carefully studied in attempts to both identify and measure the actual masses of the central supermassive black hole candidates. Some of the most notable galaxies with supermassive black hole candidates include the Andromeda Galaxy, Messier 32, Messier 87, the Sombrero Galaxy, and the Milky Way itself.
+
+On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A*; The data had been collected in 2017.",0.6153846153846154,local,choose the correct answer: what is the evidence for the existence of a supermassive black hole at the center of the milky way galaxy? carefully.,2162452045
+1891,"Choose the correct answer: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? among the listed options.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The concept of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical structure can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.5,local,"choose the correct answer: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? among the listed options.",3393194155
+1892,Determine the correct option: What is the Optical Signal-to-Noise Ratio (OSNR)? among the listed options.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.36363636363636365,local,determine the correct option: what is the optical signal-to-noise ratio (osnr)? among the listed options.,2165384586
+1893,"Determine the correct option: What is the concept of simultaneity in Einstein's book, Relativity? from the following choices.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame need not be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is relative, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.","Simultaneity is absolute, meaning that two events that appear simultaneous to an observer in a particular inertial reference frame will always be judged as simultaneous by a second observer in a different inertial frame of reference.",Simultaneity is a concept that applies only to Newtonian theories and not to relativistic theories.,Simultaneity is a concept that applies only to relativistic theories and not to Newtonian theories.,A,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+Other areas of inquiry
+Cosmologists also study:
+ Whether primordial black holes were formed in our universe, and what happened to them.
+ Detection of cosmic rays with energies above the GZK cutoff, and whether it signals a failure of special relativity at high energies.
+ The equivalence principle, whether or not Einstein's general theory of relativity is the correct theory of gravitation, and if the fundamental laws of physics are the same everywhere in the universe.
+Biophysical cosmology: a type of physical cosmology that studies and understands life as part or an inherent part of physical cosmology. It stresses that life is inherent to the universe and therefore frequent.
+
+Einstein resigned from the Prussian Academy in March 1933. His accomplishments in Berlin had included the completion of the general theory of relativity, proving the Einstein–de Haas effect, contributing to the quantum theory of radiation, and the development of Bose–Einstein statistics.",0.45454545454545453,local,"determine the correct option: what is the concept of simultaneity in einstein's book, relativity? from the following choices.",506896391
+1894,Identify the correct statement: What is the mechanism of FTIR? from the following choices.,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"A  statement somewhat resembles a procedure call in a newer languages in the sense that execution returns to the code following the  statement at the end of the called code; however, it does not provide a mechanism for parameter passing or for returning a result value. If a subroutine is invoked using a simple statement like , then control returns at the end of the called procedure. However,  is unusual in that it may be used to call a range spanning a sequence of several adjacent procedures. This is done with the  construct:
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Historically a barrister might use the honorific, Esquire. Even though the term barrister-at-law is sometimes seen, and was once very common, it has never been formally correct in England and Wales. Barrister is the only correct nomenclature.This was confirmed by the Professional Conduct Committee of the Bar Council when it changed its rules on the usage of the description by individuals in 1970, Annual Statement of the Bar Council, 1969/70.",0.7142857142857143,local,identify the correct statement: what is the mechanism of ftir? from the following choices.,1682907764
+1895,Identify the correct statement: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? from the following choices.,The atmosphere is a framework that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized frameworks and time-varying forcing from recurrent seasons.",The atmosphere is a framework that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic framework with no order or organization.,The atmosphere is a completely ordered framework with no chaos or randomness.,B,No match found.,0.0,live_api,identify the correct statement: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? from the following choices.,2554677561
+1896,Which mathematical function is commonly used to characterize linear time-invariant systems?,Trigonometric function,Quadratic function,Exponential function,Logarithmic function,Transfer function,E,"Linear filters process time-varying input signals to produce output signals, subject to the constraint of linearity. In most cases these linear filters are also time invariant (or shift invariant) in which case they can be analyzed exactly using LTI (""linear time-invariant"") system theory revealing their transfer functions in the frequency domain and their impulse responses in the time domain. Real-time implementations of such linear signal processing filters in the time domain are inevitably causal, an additional constraint on their transfer functions. An analog electronic circuit consisting only of linear components (resistors, capacitors, inductors, and linear amplifiers) will necessarily fall in this category, as will comparable mechanical systems or digital signal processing systems containing only linear elements. Since linear time-invariant filters can be completely characterized by their response to sinusoids of different frequencies (their frequency response), they are sometimes known as frequency filters.
+
+Linear and nonlinear control theory
+The field of control theory can be divided into two branches:
+ Linear control theory – This applies to systems made of devices which obey the superposition principle, which means roughly that the output is proportional to the input.  They are governed by linear differential equations.  A major subclass is systems which in addition have parameters which do not change with time, called linear time invariant (LTI) systems.   These systems are amenable to powerful frequency domain mathematical techniques of great generality, such as the Laplace transform, Fourier transform, Z transform, Bode plot, root locus, and Nyquist stability criterion.  These lead to a description of the system using terms like bandwidth, frequency response, eigenvalues, gain, resonant frequencies, zeros and poles, which give solutions for system response and design techniques for most systems of interest. 
+ Nonlinear control theory – This covers a wider class of systems that do not obey the superposition principle, and applies to more real-world systems because all real control systems are nonlinear.  These systems are often governed by nonlinear differential equations.  The few mathematical techniques which have been developed to handle them are more difficult and much less general, often applying only to narrow categories of systems.  These include limit cycle theory, Poincaré maps, Lyapunov stability theorem, and describing functions.  Nonlinear systems are often analyzed using numerical methods on computers, for example by simulating their operation using a simulation language.  If only solutions near a stable point are of interest, nonlinear systems can often be linearized by approximating them by a linear system using perturbation theory, and linear techniques can be used.
+
+The bilinear transform is a special case of a conformal mapping (namely, a Möbius transformation), often used for converting a transfer function  of a linear, time-invariant (LTI) filter in the continuous-time domain (often named an analog filter) to a transfer function  of a linear, shift-invariant filter in the discrete-time domain (often named a digital filter although there are analog filters constructed with switched capacitors that are discrete-time filters). It maps positions on the  axis, , in the s-plane to the unit circle, , in the z-plane.  Other bilinear transforms can be used for warping the frequency response of any discrete-time linear system (for example to approximate the non-linear frequency resolution of the human auditory system) and are implementable in the discrete domain by replacing a system's unit delays  with first order all-pass filters.",0.8,local,which mathematical function is commonly used to characterize linear time-invariant systems?,1574791059
+1897,Which of the following is correct? What is the fate of a carbocation formed in crystalline naphthalene?,"The carbocation remains positively charged, trapped in the solid.","The carbocation undergoes spontaneous bond breaking, yielding a carbon-helium ion.","The carbocation forms a bond with helium, becoming a stable compound.","The carbocation undergoes decay, forming a negatively charged ion.","The carbocation gains an electron from surrounding molecules, becoming an electrically neutral radical.",E,"Estonia is located on the northwestern part of the East European Platform, bordering the Fennoscandian Shield. Estonia's bedrock consists of two main layers: the crystalline basement and the sedimentary cover. These are further classified into three distinct geological complexes. The crystalline basement, composed of granites, gneisses, and other crystalline rocks, formed during the Proterozoic. This is overlain by a sedimentary cover of Paleozoic rocks, including limestones and sandstones. Above this, a quaternary surface layer is mainly composed of unconsolidated sediments such as gravels, sands, and clays, which formed in the Cenozoic.
+Fauna
+
+The counterpart of elimination is an addition where double or triple bonds are converted into single bonds. Similar to substitution reactions, there are several types of additions distinguished by the type of the attacking particle. For example, in the electrophilic addition of hydrogen bromide, an electrophile (proton) attacks the double bond forming a carbocation, which then reacts with the nucleophile (bromine). The carbocation can be formed on either side of the double bond depending on the groups attached to its ends, and the preferred configuration can be predicted with the Markovnikov's rule.Wiberg, pp. 950, 1602 This rule states that ""In the heterolytic addition of a polar molecule to an alkene or alkyne, the more electronegative (nucleophilic) atom (or part) of the polar molecule becomes attached to the carbon atom bearing the smaller number of hydrogen atoms.""
+
+BPM 37093 is a white dwarf star whose carbon atoms are thought to have formed a crystalline structure. Since diamond also consists of carbon arranged in a crystalline lattice (though of a different configuration), scientists have nicknamed this star ""Lucy"" after the Beatles song ""Lucy in the Sky with Diamonds.""",0.5,local,which of the following is correct? what is the fate of a carbocation formed in crystalline naphthalene?,3297463162
+1898,What is classical mechanics?,"Classical mechanics is the branch of physics that describes the motion of macroscopic objects using concepts such as mass, acceleration, and force. It is based on a three-dimensional Euclidean space with fixed axes, and utilises many equations and mathematical concepts to relate physical quantities to one another.","Classical mechanics is the branch of physics that describes the motion of microscopic objects using concepts such as energy, momentum, and wave-particle duality. It is based on a four-dimensional space-time continuum and utilises many equations and mathematical concepts to relate physical quantities to one another.",Classical mechanics is the branch of physics that studies the behaviour of subatomic particles such as electrons and protons. It is based on the principles of quantum mechanics and utilises many equations and mathematical concepts to describe the properties of these particles.,Classical mechanics is the branch of physics that studies the behaviour of light and electromagnetic radiation. It is based on the principles of wave-particle duality and utilises many equations and mathematical concepts to describe the properties of light.,Classical mechanics is the branch of physics that studies the behaviour of fluids and gases. It is based on the principles of thermodynamics and utilises many equations and mathematical concepts to describe the properties of these substances.,A,"This article lists equations from Newtonian mechanics, see analytical mechanics for the more general formulation of classical mechanics (which includes Lagrangian and Hamiltonian mechanics).
+
+Analytical mechanics
+ Applied mechanics
+ Classical mechanics
+ Earth's rotation
+ Equatorial Rossby wave
+ Frenet–Serret formulas
+ Gyroscope
+ Kinetics (physics)
+ Reactive centrifugal force
+ Secondary flow
+ Statics
+ Uniform circular motion
+ Whirlpool
+
+There is some dispute within the field whether or not the latter methods are sufficient to describe complex chemical reactions, such as those in biochemistry. Large molecules can be studied by semi-empirical approximate methods. Even larger molecules are treated by classical mechanics methods that use what are called molecular mechanics (MM).In QM-MM methods, small parts of large complexes are treated quantum mechanically (QM), and the remainder is treated approximately (MM).",1.0,local,what is classical mechanics?,3338794325
+1899,Pick the best possible answer: What is the information loss paradox in black holes? carefully.,"Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have an infinite number of internal parameters, so all the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is lost temporarily but reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is lost forever.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is lost. Regardless of the type of matter which goes into a black hole, it appears that only information concerning the total mass, charge, and angular momentum are conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.","Black holes have only a few internal parameters, so most of the information about the matter that went into forming the black hole is preserved. Regardless of the type of matter which goes into a black hole, it appears that all the information is conserved. As black holes evaporate by emitting Hawking radiation, the information is preserved and reappears once the black hole has fully evaporated.",C,"According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analysing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.",0.5,local,pick the best possible answer: what is the information loss paradox in black holes? carefully.,3278888609
+1900,Identify the correct statement: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? among the listed options.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,identify the correct statement: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? among the listed options.,318334833
+1901,Determine the correct option: What is Lorentz symmetry or Lorentz invariance in relativistic physics? among the listed options.,Lorentz symmetry or Lorentz invariance is a property of the underlying spacetime manifold that describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.,"Lorentz symmetry or Lorentz invariance is a measure of the curvature of spacetime caused by the presence of massive objects, which describes the feature of nature that says experimental results are independent of the orientation or the boost velocity of the laboratory through space.","Lorentz symmetry or Lorentz invariance is a physical quantity that transforms under a given representation of the Lorentz group, built out of scalars, four-vectors, four-tensors, and spinors.","Lorentz symmetry or Lorentz invariance is a measure of the time dilation and length contraction effects predicted by special relativity, which states that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.",Lorentz symmetry or Lorentz invariance is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.,E,"In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events occur.
+Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.
+In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of re",0.25,local,determine the correct option: what is lorentz symmetry or lorentz invariance in relativistic physics? among the listed options.,3268013571
+1902,Select the most accurate option: What is the reason for recycling rare metals according to the United Nations? among the listed options.,"The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will minimize in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production higher than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, but recycling rare metals with a worldwide production lower than 100 000 t/year is not a good way to conserve natural resources and energy.","The demand for rare metals will quickly exceed the consumed tonnage in 2013, and recycling rare metals with a worldwide production lower than 100 000 t/year is urgent and priority should be placed on it in order to conserve natural resources and energy.",E,"Deep sea mining is the extraction of minerals from the seabed of the deep sea. The main ores of commercial interest are polymetallic nodules, which are found at depths of 4–6 km (2.5–3.7 mi) primarily on the abyssal plain. The Clarion–Clipperton zone (CCZ) alone contains over 21 billion metric tons of these nodules, with minerals such as copper, nickel, cobalt and manganese making up roughly 30% of their weight. It is estimated that the global ocean floor holds more than 120 million tons of cobalt, five times the amount found in terrestrial reserves.
+Studies have shown that midwater mining techniques causing plumes can trigger bottom-up ecosystems impacts with severe consequences to marine life, extending beyond the initial mining area.
+As of July 2024, only exploratory licenses have been issued, with no commercial-scale deep sea mining operations yet. The International Seabed Authority (ISA) regulates all mineral-related activities in international waters and has granted 31 exploratio",0.0,live_api,select the most accurate option: what is the reason for recycling rare metals according to the united nations? among the listed options.,1912762961
+1903,Choose the correct answer: What is a phageome? from the following choices.,"A community of viruses and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteria and their metagenomes localized in a particular environment, similar to a microbiome.","A community of bacteriophages and their metagenomes localized in a particular environment, similar to a microbiome.","A community of fungi and their metagenomes localized in a particular environment, similar to a microbiome.","A community of archaea and their metagenomes localized in a particular environment, similar to a microbiome.",C,"In humans 
+Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the ""healthy gut phageome"" (HGP) and the ""diseased human phageome"" (DHP). The active phageome of a healthy human (i.e., actively replicating as opposed to nonreplicating, integrated prophage) has been estimated to comprise dozens to thousands of different viruses.
+There is evidence that bacteriophages and bacteria interact in the human gut microbiome both antagonistically and beneficially.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.5,local,choose the correct answer: what is a phageome? from the following choices.,331426409
+1904,Determine the correct option: What is the relationship between the amplitude of a sound wave and its loudness?,The amplitude of a sound wave is related to its loudness.,The amplitude of a sound wave is directly proportional to its frequency.,The amplitude of a sound wave is not related to its loudness.,The amplitude of a sound wave is not related to its frequency.,The amplitude of a sound wave is inversely related to its loudness.,A,"A(t) represents the time-varying amplitude of the sinusoidal carrier wave and the cosine-term is the carrier at its angular frequency , and the instantaneous phase deviation . This description directly provides the two major groups of modulation, amplitude modulation and angle modulation. In angle modulation, the term A(t) is constant and the second term of the equation has a functional relationship to the modulating message signal. Angle modulation provides two methods of modulation, frequency modulation and phase modulation.
+
+Since the output of the amplifier can no longer increase with increasing input, further increases in amplitude cause the equivalent gain of the amplifier and thus the loop gain to decrease.  The amplitude of the sine wave, and the resulting clipping, continues to grow until the loop gain is reduced to unity, , satisfying the Barkhausen criterion, at which point the amplitude levels off and steady state operation is achieved, with the output a slightly distorted sine wave with peak amplitude determined by the supply voltage.  This is a stable equilibrium; if the amplitude of the sine wave increases for some reason, increased clipping of the output causes the loop gain  to drop below one temporarily, reducing the sine wave's amplitude back to its unity-gain value.  Similarly if the amplitude of the wave decreases, the decreased clipping will cause the loop gain to increase above one, increasing the amplitude.
+
+Radio demodulation
+The first use for the diode was the demodulation of amplitude modulated (AM) radio broadcasts. An AM signal consists of alternating positive and negative peaks of a radio carrier wave, whose amplitude or envelope is proportional to the original audio signal. The diode rectifies the AM radio frequency signal, leaving only the positive peaks of the carrier wave. The audio is then extracted from the rectified carrier wave using a simple filter and fed into an audio amplifier or transducer, which generates sound waves via audio speaker.",0.5,local,determine the correct option: what is the relationship between the amplitude of a sound wave and its loudness?,40933458
+1905,Determine the correct option: What is geometric quantization in mathematical physics? among the listed options.,Geometric quantization is a mathematical approach to defining a classical principle corresponding to a given quantum principle. It attempts to carry out quantization in such a way that certain analogies between the quantum principle and the classical principle are lost.,Geometric quantization is a mathematical approach to defining a quantum principle corresponding to a given classical principle. It attempts to carry out quantization in such a way that certain analogies between the classical principle and the quantum principle are lost.,Geometric quantization is a mathematical approach to defining a classical principle corresponding to a given quantum principle. It attempts to carry out quantization in such a way that certain analogies between the quantum principle and the classical principle remain manifest.,Geometric quantization is a mathematical approach to defining a quantum framework corresponding to a given classical framework. It attempts to carry out quantization in such a way that certain analogies between the classical framework and the quantum framework are not key.,Geometric quantization is a mathematical approach to defining a quantum framework corresponding to a given classical framework. It attempts to carry out quantization in such a way that certain analogies between the classical framework and the quantum framework remain manifest.,E,"In mathematics, the Fourier transform (FT) is an integral transform that takes a function as input and outputs another function that describes the extent to which various frequencies are present in the original function. The output of the transform is a complex valued function of frequency. The term Fourier transform refers to both the mathematical operation and to this complex-valued function. When a distinction needs to be made, the output of the operation is sometimes called the frequency domain representation of the original function. The Fourier transform is analogous to decomposing the sound of a musical chord into the intensities of its constituent pitches.
+
+Functions that are localized in the time domain have Fourier transforms that are spread out across the frequency domain and vice versa, a phenomenon known as the uncertainty principle. The critical case for this principle is the Gaussian function, of substantial importance in probability theory and statistics as well as in t",0.1,live_api,determine the correct option: what is geometric quantization in mathematical physics? among the listed options.,2777510329
+1906,Select the most accurate option: What was Isaac Newton's explanation for rectilinear propagation of light? from the following choices.,"Isaac Newton rejected the wave framework of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave principle of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave framework of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,"Fresnel gave the first satisfactory explanation of diffraction by straight edges, including the first satisfactory wave-based explanation of rectilinear propagation. By further supposing that light waves are purely transverse, Fresnel explained the nature of polarization. He then worked on double refraction.",0.2857142857142857,local,select the most accurate option: what was isaac newton's explanation for rectilinear propagation of light? from the following choices.,1800502754
+1907,"Pick the best possible answer: What is the butterfly effect, as defined by Lorenz in his book ""The Essence of Chaos""? from the following choices.","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical framework can cause subsequent states to differ greatly from the states that would have followed without the alteration, as defined by Einstein in his book ""The framework of Relativity.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical structure can cause significant distinctions in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a small change in the initial conditions of a dynamical mechanism has no effect on subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""","The butterfly effect is the phenomenon that a large change in the initial conditions of a dynamical framework can cause significant contrasts in subsequent states, as defined by Lorenz in his book ""The Essence of Chaos.""",C,"In the book entitled The Essence of Chaos published in 1993, Lorenz defined butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" This feature is the same as sensitive dependence of solutions on initial conditions (SDIC) in . In the same book, Lorenz applied the activity of skiing and developed an idealized skiing model for revealing the sensitivity of time-varying paths to initial positions. A predictability horizon is determined before the onset of SDIC.
+
+As suggested in Lorenz's book entitled The Essence of Chaos, published in 1993, ""sensitive dependence can serve as an acceptable definition of chaos"". In the same book, Lorenz defined the butterfly effect as: ""The phenomenon that a small alteration in the state of a dynamical system will cause subsequent states to differ greatly from the states that would have followed without the alteration."" The above definition is consistent with the sensitive dependence of solutions on initial conditions (SDIC). An idealized skiing model was developed to illustrate the sensitivity of time-varying paths to initial positions. A predictability horizon can be determined before the onset of SDIC (i.e., prior to significant separations of initial nearby trajectories).
+
+Weather and Chaos: The Work of Edward N. Lorenz. A short documentary that explains the ""butterfly effect"" in context of Lorenz's work.
+ The Chaos Hypertextbook. An introductory primer on chaos and fractals",0.5,local,"pick the best possible answer: what is the butterfly effect, as defined by lorenz in his book ""the essence of chaos""? from the following choices.",1162286747
+1908,Determine the correct option: What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics?,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a mechanism of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the mechanism. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a framework of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.",0.6666666666666666,local,determine the correct option: what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics?,2704321844
+1909,Choose the correct answer: What was Pierre de Fermat's solution to the problem of refraction?,"Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as directly proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered the same resistance. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more quickly in the optically denser medium.","Fermat supposed that light took the path of least resistance, and that different media offered different resistances. His eventual solution, described in a letter to La Chambre dated 1 January 1662, construed ""resistance"" as inversely proportional to speed, so that light took the path of least time. That premise yielded the ordinary law of refraction, provided that light traveled more slowly in the optically denser medium.",E,"He began to discuss the problem in the famous series of letters to Pierre de Fermat. Soon enough, they both independently came up with a solution. They solved the problem in different computational ways, but their results were identical because their computations were based on the same fundamental principle. The principle is that the value of a future gain should be directly proportional to the chance of getting it. This principle seemed to have come naturally to both of them. They were very pleased by the fact that they had found essentially the same solution, and this in turn made them absolutely convinced that they had solved the problem conclusively; however, they did not publish their findings. They only informed a small circle of mutual scientific friends in Paris about it.
+
+Fermat
+The Latin translation of Arithmetica by Bachet in 1621 became the first Latin edition that was widely available. Pierre de Fermat owned a copy, studied it and made notes in the margins. The 1621 edition of Arithmetica by Bachet gained fame after Pierre de Fermat wrote his famous ""Last Theorem"" in the margins of his copy: If an integer  is greater than 2, then  has no solutions in non-zero integers , , and . I have a truly marvelous proof of this proposition which this margin is too narrow to contain.Fermat's proof was never found, and the problem of finding a proof for the theorem went unsolved for centuries. A proof was finally found in 1994 by Andrew Wiles after working on it for seven years.  It is believed that Fermat did not actually have the proof he claimed to have. Although the original copy in which Fermat wrote this is lost today, Fermat's son edited the next edition of Diophantus, published in 1670. Even though the text is otherwise inferior to the 1621 edition, Fermat's annotations—including the ""Last Theorem""—were printed in this version.
+
+Pierre de Fermat also pioneered the development of analytic geometry. Although not published in his lifetime, a manuscript form of Ad locos planos et solidos isagoge (Introduction to Plane and Solid Loci) was circulating in Paris in 1637, just prior to the publication of Descartes' Discourse.Pierre de Fermat, Varia Opera Mathematica d. Petri de Fermat, Senatoris Tolosani (Toulouse, France:  Jean Pech, 1679), ""Ad locos planos et solidos isagoge,"" pp. 91–103. ""Eloge de Monsieur de Fermat""  (Eulogy of Mr. de Fermat), Le Journal des Scavans, 9 February 1665, pp. 69–72.  From p. 70:  ""Une introduction aux lieux, plans & solides; qui est un traité analytique concernant la solution des problemes plans & solides, qui avoit esté veu devant que M. des Cartes eut rien publié sur ce sujet.""  (An introduction to loci, plane and solid; which is an analytical treatise concerning the solution of plane and solid problems, which was seen before Mr. des Cartes had published anything on this subject.) Clearly written and well received, the Introduction also laid the groundwork for analytical geometry. The key difference between Fermat's and Descartes' treatments is a matter of viewpoint: Fermat always started with an algebraic equation and then described the geometric curve that satisfied it, whereas Descartes started with geometric curves and produced their equations as one of several properties of the curves. As a consequence of this approach, Descartes had to deal with more complicated equations and he had to develop the methods to work with polynomial equations of higher degree. It was Leonhard Euler who first applied the coordinate method in a systematic study of space curves and surfaces.",0.6363636363636364,local,choose the correct answer: what was pierre de fermat's solution to the problem of refraction?,1371726990
+1910,Choose the correct answer: What is the significance of the speed of light in vacuum? carefully.,The speed of light in vacuum is only relevant when measuring the one-way speed of light.,The speed of light in vacuum is only relevant when measuring the two-way speed of light.,The speed of light in vacuum is independent of the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is dependent on the motion of the wave source and the observer's inertial frame of reference.,The speed of light in vacuum is only relevant when c appears explicitly in the units of measurement.,C,"This is the speed of light in vacuum. Thus Maxwell's equations connect the vacuum permittivity , the vacuum permeability , and the speed of light, c0, via the above equation. This relationship had been discovered by Wilhelm Eduard Weber and Rudolf Kohlrausch prior to the development of Maxwell's electrodynamics, however Maxwell was the first to produce a field theory consistent with waves traveling at the speed of light.
+
+where
+ m0 is the rest mass of the body,
+ c is the speed of light in vacuum,
+  is the rest energy.
+
+Cosmological models employing a variable speed of light have been proposed to resolve the horizon problem of and provide an alternative to cosmic inflation. In the VSL models, the fundamental constant c, denoting the speed of light in vacuum, is greater in the early universe than its present value, effectively increasing the particle horizon at the time of decoupling sufficiently to account for the observed isotropy of the CMB.",0.375,local,choose the correct answer: what is the significance of the speed of light in vacuum? carefully.,2297858873
+1911,Choose the correct answer: What is Minkowski space? based on the given context.,Minkowski space is a physical space where objects move in a straight line unless acted upon by a force.,Minkowski space is a mathematical model that combines inertial space and time manifolds with a non-inertial reference frame of space and time into a four-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a two-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a three-dimensional model relating a position to the field.,Minkowski space is a physical space where objects move in a curved line unless acted upon by a force.,B,"Let  be subsets of a real vector-space, the convex hull of their Minkowski sum is the Minkowski sum of their convex hulls
+
+The dimension of Euclidean -space is . When trying to generalize to other types of spaces, one is faced with the question ""what makes  -dimensional?"" One answer is that to cover a fixed ball in  by small balls of radius , one needs on the order of  such small balls. This observation leads to the definition of the Minkowski dimension and its more sophisticated variant, the Hausdorff dimension, but there are also other answers to that question. For example, the boundary of a ball in  looks locally like  and this leads to the notion of the inductive dimension. While these notions agree on , they turn out to be different when one looks at more general spaces.
+
+in algebraic terminology,  is the identity element of Minkowski addition (on the collection of non-empty sets).The empty set is important in Minkowski addition, because the empty set annihilates every other subset: For every subset  of a vector space, its sum with the empty set is empty: .",0.375,local,choose the correct answer: what is minkowski space? based on the given context.,1605681062
+1912,Identify the correct statement: What is the most popular explanation for the shower-curtain effect? based on the given context.,The pressure differential between the inside and outside of the shower,The minimize in velocity resulting in an boost in pressure,The movement of air across the outside surface of the shower curtain,The use of cold water,Bernoulli's principle,E,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.0,live_api,identify the correct statement: what is the most popular explanation for the shower-curtain effect? based on the given context.,2991572686
+1913,Determine the correct option: What is the Ramsauer-Townsend effect? among the listed options.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a non-noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of low-energy electrons by atoms of a noble gas. It requires the wave principle of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a noble gas. It can be explained by classical mechanics.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of high-energy electrons by atoms of a non-noble gas. It requires the wave framework of quantum mechanics to be explained.,The Ramsauer-Townsend effect is a physical phenomenon that involves the scattering of electrons by atoms of any gas. It can be explained by classical mechanics.,B,No match found.,0.0,live_api,determine the correct option: what is the ramsauer-townsend effect? among the listed options.,4082154851
+1914,"Pick the best possible answer: What is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"Healthcare in the United States is largely provided by private sector healthcare facilities, and paid for by a combination of public programs, county indigent health care programs, private insurance, and out-of-pocket payments. The U.S. is the only developed country without a system of universal healthcare, with around 92% of the population covered under some kind of health insurance for some, or all of the year. The United States spends more on healthcare than any other country, both in absolute terms and as a percentage of GDP; however, this expenditure does not necessarily translate into better overall health outcomes compared to other developed nations. In 2022, the United States spent approximately 17.8% of its Gross Domestic Product (GDP) on healthcare, significantly higher than the average of 11.5% among other high-income countries. Coverage varies across the population with certain groups. This includes the elderly, disabled, and low-income individuals receiving more comprehens",0.0625,live_api,"pick the best possible answer: what is the purpose of expressing a map's scale as a ratio, such as 1:10,000? from the following choices.",859782177
+1915,Identify the correct statement: What is Minkowski space? based on the given context.,Minkowski space is a physical space where objects move in a straight line unless acted upon by a force.,Minkowski space is a mathematical model that combines inertial space and time manifolds with a non-inertial reference frame of space and time into a four-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a two-dimensional model relating a position to the field.,Minkowski space is a mathematical model that combines space and time into a three-dimensional model relating a position to the field.,Minkowski space is a physical space where objects move in a curved line unless acted upon by a force.,B,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Let  be subsets of a real vector-space, the convex hull of their Minkowski sum is the Minkowski sum of their convex hulls
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:",0.75,local,identify the correct statement: what is minkowski space? based on the given context.,682561781
+1916,Select the most accurate option: What is the Heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? among the listed options.,"The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that quantum particles possess a type of non-orbital angular momentum called ""spin"". This is because angular momentum, like other quantities in quantum mechanics, is expressed as a tensorial operator in relativistic quantum mechanics.","The Heisenberg uncertainty principle states that the total angular momentum of a framework of particles is equal to the sum of the individual particle angular momenta, and that the centre of mass is for the framework. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that the total angular momentum of a mechanism of particles is subject to quantization, and that the individual particle angular momenta are expressed as operators. This is because angular momentum, like other quantities in quantum mechanics, is subject to the Heisenberg uncertainty principle.","The Heisenberg uncertainty principle states that the axis of rotation of a quantum particle is undefined, and that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is subject to quantization and expressed as an operator with quantized eigenvalues.","The Heisenberg uncertainty principle states that at any given time, only one projection of angular momentum can be measured with definite precision, while the other two remain uncertain. This is because angular momentum, like other quantities in quantum mechanics, is expressed as an operator with quantized eigenvalues.",E,"In quantum mechanics, angular momentum (like other quantities) is expressed as an operator, and its one-dimensional projections have quantized eigenvalues. Angular momentum is subject to the Heisenberg uncertainty principle, implying that at any time, only one projection (also called ""component"") can be measured with definite precision; the other two then remain uncertain. Because of this, the axis of rotation of a quantum particle is undefined. Quantum particles do possess a type of non-orbital angular momentum called ""spin"", but this angular momentum does not correspond to a spinning motion. In relativistic quantum mechanics the above relativistic definition becomes a tensorial operator.
+
+Uncertainty 
+In the definition , six operators are involved: The position operators , , , and the momentum operators , , . However, the Heisenberg uncertainty principle tells us that it is not possible for all six of these quantities to be known simultaneously with arbitrary precision. Therefore, there are limits to what can be known or measured about a particle's angular momentum. It turns out that the best that one can do is to simultaneously measure both the angular momentum vector's magnitude and its component along one axis.
+
+Modern conceptions and connections to the Heisenberg uncertainty principle 
+Immediately after Heisenberg discovered his uncertainty principle, Bohr noted that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself. In quantum mechanics, where all particle momenta are associated with waves, it is the formation of such a wave packet which localizes the wave, and thus the particle, in space. In states where a quantum mechanical particle is bound, it must be localized as a wave packet, and the existence of the packet and its minimum size implies a spread and minimal value in particle wavelength, and thus also momentum and energy. In quantum mechanics, as a particle is localized to a smaller region in space, the associated compressed wave packet requires a larger and larger range of momenta, and thus larger kinetic energy. Thus the binding energy to contain or trap a particle in a smaller region of space increases without bound as the region of space grows smaller. Particles cannot be restricted to a geometric point in space, since this would require infinite particle momentum.",0.5,local,select the most accurate option: what is the heisenberg uncertainty principle and how does it relate to angular momentum in quantum mechanics? among the listed options.,1757556442
+1917,Select the most accurate option: What happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation?,It will change its internal state only if it is composed of a single submechanism and has internal walls.,It will change its internal state only if it is composed of several substructures separated from each other by walls.,It will remain in its initial state indefinitely.,It will generally change its internal state over time.,It will change its internal state only if it is composed of a single substructure.,D,No match found.,0.0,live_api,select the most accurate option: what happens to an initially inhomogeneous physical framework that is isolated by a thermodynamic operation?,3849499550
+1918,Which of the following is correct? What is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? carefully.,"The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the temperature between the surfaces.","The surface charge on a conductor depends on the magnitude of the magnetic field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the angle between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the distance between the surfaces.","The surface charge on a conductor depends on the magnitude of the electric field, which in turn depends on the pressure between the surfaces.",D,No match found.,0.0,live_api,which of the following is correct? what is the reason behind the largest externally observed electrical effects when two conductors are separated by the smallest distance without touching? carefully.,1011456225
+1919,Select the most accurate option: What is geometric quantization in mathematical physics?,Geometric quantization is a mathematical approach to defining a classical framework corresponding to a given quantum framework. It attempts to carry out quantization in such a way that certain analogies between the quantum framework and the classical framework are lost.,Geometric quantization is a mathematical approach to defining a quantum concept corresponding to a given classical concept. It attempts to carry out quantization in such a way that certain analogies between the classical concept and the quantum concept are lost.,Geometric quantization is a mathematical approach to defining a classical concept corresponding to a given quantum concept. It attempts to carry out quantization in such a way that certain analogies between the quantum concept and the classical concept remain manifest.,Geometric quantization is a mathematical approach to defining a quantum concept corresponding to a given classical concept. It attempts to carry out quantization in such a way that certain analogies between the classical concept and the quantum concept are not significant.,Geometric quantization is a mathematical approach to defining a quantum principle corresponding to a given classical principle. It attempts to carry out quantization in such a way that certain analogies between the classical principle and the quantum principle remain manifest.,E,This glossary of engineering terms is a list of definitions about the major concepts of engineering. Please see the bottom of the page for glossaries of specific fields of engineering.,0.0,live_api,select the most accurate option: what is geometric quantization in mathematical physics?,2392665518
+1920,Which of the following is correct? What is the Minkowski diagram used for?,The Minkowski diagram is used to define concepts and demonstrate properties of Newtonian mechanics and to provide geometrical interpretation to the generalization of Lorentz transformations to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of general relativity and to provide geometrical interpretation to the generalization of special relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of quantum mechanics to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of special relativity and to provide geometrical interpretation to the generalization of general relativity to relativistic mechanics.,The Minkowski diagram is used to define concepts and demonstrate properties of Lorentz transformations and to provide geometrical interpretation to the generalization of Newtonian mechanics to relativistic mechanics.,E,"Convex hulls of Minkowski sums 
+Minkowski addition behaves well with respect to the operation of taking convex hulls, as shown by the following proposition:
+
+Glasses' Abbe numbers, along with their mean refractive indices, are used in the calculation of the required refractive powers of the elements of achromatic lenses in order to cancel chromatic aberration to first order. These two parameters, which enter into the equations for the design of achromatic doublets, are exactly what is plotted on an Abbe diagram.
+
+By calculation one can confirm the following properties of the pole-polar relation of the ellipse:
+ For a point (pole) on the ellipse, the polar is the tangent at this point (see diagram: 
+ For a pole  outside the ellipse, the intersection points of its polar with the ellipse are the tangency points of the two tangents passing  (see diagram: 
+ For a point within the ellipse, the polar has no point with the ellipse in common (see diagram:",0.8333333333333334,local,which of the following is correct? what is the minkowski diagram used for?,1177594413
+1921,Choose the correct answer: What is the gravitomagnetic interaction? based on the given context.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general principle of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Sociologists representing symbolic interactionism argue that social rules are created through the interaction between the members of a society. The focus on active interaction highlights the fluid, shifting character of social rules. These are specific to the social context, a context that varies through time and place. That means a social rule changes over time within the same society. What was acceptable in the past may no longer be the case. Similarly, rules differ across space: what is acceptable in one society may not be so in another.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)",0.75,local,choose the correct answer: what is the gravitomagnetic interaction? based on the given context.,755720106
+1922,Pick the best possible answer: What is the relationship between the Cauchy momentum equation and the Navier-Stokes equation? carefully.,"The Navier-Stokes equation can be derived from the Cauchy momentum equation by specifying the stress tensor through a constitutive relation, expressing the shear tensor in terms of viscosity and fluid velocity, and assuming constant density and viscosity.",The Navier-Stokes equation is a simplified version of the Cauchy momentum equation that only applies to situations with constant density and viscosity.,"The Navier-Stokes equation is a special case of the Cauchy momentum equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",The Cauchy momentum equation and the Navier-Stokes equation are completely unrelated and cannot be used interchangeably in any situation.,"The Cauchy momentum equation is a special case of the Navier-Stokes equation, which is a more general equation that applies to all non-relativistic momentum conservation situations.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",0.3333333333333333,local,pick the best possible answer: what is the relationship between the cauchy momentum equation and the navier-stokes equation? carefully.,1389155644
+1923,Identify the correct statement: How many crystallographic point groups are there in three-dimensional space? from the following choices.,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.",0.3076923076923077,local,identify the correct statement: how many crystallographic point groups are there in three-dimensional space? from the following choices.,3188552355
+1924,Select the most accurate option: What is the Josephson effect? among the listed options.,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.
+
+This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.",0.6666666666666666,local,select the most accurate option: what is the josephson effect? among the listed options.,349149984
+1925,Which of the following is correct? What is the Einstein@Home project? based on the given context.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+Einstein never fully accepted quantum mechanics. While he recognized that it made correct predictions, he believed a more fundamental description of nature must be possible. Over the years he presented multiple arguments to this effect, but the one he preferred most dated to a debate with Bohr in 1930. Einstein suggested a thought experiment in which two objects are allowed to interact and then moved apart a great distance from each other. The quantum-mechanical description of the two objects is a mathematical entity known as a wavefunction. If the wavefunction that describes the two objects before their interaction is given, then the Schrödinger equation provides the wavefunction that describes them after their interaction. But because of what would later be called quantum entanglement, measuring one object would lead to an instantaneous change of the wavefunction describing the other object, no matter how far away it is. Moreover, the choice of which measurement to perform upon the first object would affect what wavefunction could result for the second object. Einstein reasoned that no influence could propagate from the first object to the second instantaneously fast. Indeed, he argued, physics depends on being able to tell one thing apart from another, and such instantaneous influences would call that into question. Because the true ""physical condition"" of the second object could not be immediately altered by an action done to the first, Einstein concluded, the wavefunction could not be that true physical condition, only an incomplete description of it.
+
+Though the EPR paper has often been taken as an exact expression of Einstein's views, it was primarily authored by Podolsky, based on discussions at the Institute for Advanced Study with Einstein and Rosen. Einstein later expressed to Erwin Schrödinger that, ""it did not come out as well as I had originally wanted; rather, the essential thing was, so to speak, smothered by the formalism."" Einstein would later go on to present an individual account of his local realist ideas. English translation by Jean Piccard, pp 349–382 in the same issue, ). Shortly before the EPR paper appeared in the Physical Review, The New York Times ran a news story about it, under the headline ""Einstein Attacks Quantum Theory"". The story, which quoted Podolsky, irritated Einstein, who wrote to the Times, ""Any information upon which the article 'Einstein Attacks Quantum Theory' in your issue of May 4 is based was given to you without authority. It is my invariable practice to discuss scientific matters only in the appropriate forum and I deprecate advance publication of any announcement in regard to such matters in the secular press.""",0.6666666666666666,local,which of the following is correct? what is the einstein@home project? based on the given context.,2262620448
+1926,Identify the correct statement: What is the propagation constant in sinusoidal waves? among the listed options.,The propagation constant is a measure of the amplitude of the sinusoidal wave that varies with distance.,The propagation constant is a real number that remains constant with distance due to the phase change in the sinusoidal wave.,The propagation constant is a real number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that varies with distance due to the phase change in the sinusoidal wave.,The propagation constant is a complex number that remains constant with distance due to the phase change in the sinusoidal wave.,D,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.0,live_api,identify the correct statement: what is the propagation constant in sinusoidal waves? among the listed options.,250054720
+1927,Choose the correct answer: What is the De Haas-Van Alphen effect? based on the given context.,The measurement of the electronic properties of a material using several experimental techniques.,The complex number quantity that describes AC susceptibility and AC permeability.,"The oscillation of the differential susceptibility as a function of 1/H in metals under strong magnetic fields, which relates the period of the susceptibility with the Fermi surface of the material.",The analogue non-linear relation between magnetization and magnetic field in antiferromagnetic materials.,The measurement of magnetic susceptibility in response to an AC magnetic field.,C,"In doped semiconductors the ratio between Landau and Pauli susceptibilities may change due to the effective mass of the charge carriers differing from the electron mass in vacuum, increasing the diamagnetic contribution. The formula presented here only applies for the bulk; in confined systems like quantum dots, the description is altered due to quantum confinement. Additionally, for strong magnetic fields, the susceptibility of delocalized electrons oscillates as a function of the field strength, a phenomenon known as the De Haas–Van Alphen effect, also first described theoretically by Landau.",0.45454545454545453,local,choose the correct answer: what is the de haas-van alphen effect? based on the given context.,3456540150
+1928,Choose the correct answer: What is magnetic susceptibility? based on the given context.,"Magnetic susceptibility is a measure of how much a material will absorb magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will resist magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will conduct magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.","Magnetic susceptibility is a measure of how much a material will reflect magnetization in an applied magnetic field. It is the ratio of magnetization to the applied magnetizing field intensity, allowing for a simple classification of most materials' responses to an applied magnetic field.",B,"Diamagnetic materials, like water, or water-based materials, have a relative magnetic permeability that is less than or equal to 1, and therefore a magnetic susceptibility less than or equal to 0, since susceptibility is defined as . This means that diamagnetic materials are repelled by magnetic fields. However, since diamagnetism is such a weak property, its effects are not observable in everyday life. For example, the magnetic susceptibility of diamagnets such as water is . The most strongly diamagnetic material is bismuth, , although pyrolytic carbon may have a susceptibility of  in one plane. Nevertheless, these values are orders of magnitude smaller than the magnetism exhibited by paramagnets and ferromagnets. Because χv is derived from the ratio of the internal magnetic field to the applied field, it is a dimensionless value.",0.375,local,choose the correct answer: what is magnetic susceptibility? based on the given context.,2823179719
+1929,Pick the best possible answer: What is the origin of the radio emission observed from supernova remnants? from the following choices.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,"In April 2003, the Supernova Legacy Survey observed a type Ia supernova, designated SNLS-03D3bb, in a galaxy approximately 4 billion light years away. According to astronomers at the University of Toronto and elsewhere, the observations of this supernova are best explained by assuming that it arose from a white dwarf that had grown to twice the mass of the Sun before exploding.
+
+Antlia is home to the huge Antlia Supernova Remnant, one of the largest supernova remnants in the sky.",0.3333333333333333,local,pick the best possible answer: what is the origin of the radio emission observed from supernova remnants? from the following choices.,446111084
+1930,Pick the best possible answer: What is the reason that Newton's second law cannot be used to calculate the development of a physical framework in quantum mechanics? based on the given context.,"The existence of particle spin, which is linear momentum that can be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that is always equal to zero.","The existence of particle spin, which is linear momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that cannot be described by the cumulative effect of point-like motions in space.","The existence of particle spin, which is angular momentum that can be described by the cumulative effect of point-like motions in space.",D,"While angular momentum total conservation can be understood separately from Newton's laws of motion as stemming from Noether's theorem in systems symmetric under rotations, it can also be understood simply as an efficient method of calculation of results that can also be otherwise arrived at directly from Newton's second law, together with laws governing the forces of nature (such as Newton's third law, Maxwell's equations and Lorentz force). Indeed, given initial conditions of position and velocity for every point, and the forces at such a condition, one may use Newton's second law to calculate the second derivative of position, and solving for this gives full information on the development of the physical system with time.Tenenbaum, M., & Pollard, H. (1985). Ordinary differential equations en elementary textbook for students of mathematics. Engineering and the Sciences. Note, however, that this is no longer true in quantum mechanics, due to the existence of particle spin, which is an angular momentum that cannot be described by the cumulative effect of point-like motions in space.
+
+Molecular dynamics (MD) use either quantum mechanics, molecular mechanics or a mixture of both to calculate forces which are then used to solve Newton's laws of motion to examine the time-dependent behavior of systems. The result of a molecular dynamics simulation is a trajectory that describes how the position and velocity of particles varies with time. The phase point of a system described by the positions and momenta of all its particles on a previous time point will determine the next phase point in time by integrating over Newton's laws of motion.",0.6363636363636364,local,pick the best possible answer: what is the reason that newton's second law cannot be used to calculate the development of a physical framework in quantum mechanics? based on the given context.,1162832137
+1931,Identify the correct statement: What is the Einstein@Home project?,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect signals from supernovae or binary black holes. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a distributed computing project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from LIGO and GEO and sends it out in large pieces to thousands of volunteers for parallel analysis on their home computers.,The Einstein@Home project is a project that aims to detect simple gravitational waves with constant frequency. It takes data from SETI and GEO and sends it out in little pieces to thousands of volunteers for parallel analysis on their home computers.,C,"21st century 
+Since 2000, the Einstein Papers Project has been located at Caltech. The project was established in 1986 to assemble, preserve, translate, and publish papers selected from the literary estate of Albert Einstein and from other collections.
+
+In 1997, the ""Central and Eastern Eurobarometer"" poll included a section intending to ""discover the level of public awareness of the European Union"" in what were then candidate countries in Central and Eastern Europe. Interviewees were shown ""a sticker of the European flag"" and asked to identify it. Responses considered correct were: the European Union, the European Community, the Common Market, and ""Europe in general"". 52% of those interviewed gave one of the correct answers, 15% gave a wrong answer (naming another institution, such as NATO or the United Nations), and 35% could or would not identify it.Countries polled: Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia (joined 2004), Bulgaria and Romania (joined 2007). Central and Eastern Eurobarometer, Issue 8, European Commission, March 1998.
+
+Criticism
+Incompleteness and indeterminism
+Einstein was an early and persistent supporter of objective reality. Bohr and Heisenberg advanced the position that no physical property could be understood without an act of measurement, while Einstein refused to accept this. Abraham Pais recalled a walk with Einstein when the two discussed quantum mechanics: ""Einstein suddenly stopped, turned to me and asked whether I really believed that the moon exists only when I look at it."" While Einstein did not doubt that quantum mechanics was a correct physical theory in that it gave correct predictions, he maintained that it could not be a complete theory. The most famous product of his efforts to argue the incompleteness of quantum theory is the Einstein–Podolsky–Rosen thought experiment, which was intended to show that physical properties like position and momentum have values even if not measured. The argument of EPR was not generally persuasive to other physicists.",0.6666666666666666,local,identify the correct statement: what is the einstein@home project?,1142160383
+1932,"Choose the correct answer: What is the ""ultraviolet catastrophe""?",It is a phenomenon that occurs only in multi-mode vibration.,It is the misbehavior of a formula for higher frequencies.,It is the standing wave of a string in harmonic resonance.,It is a flaw in classical physics that results in the misallocation of energy.,It is a disproven concept about the distribution of electromagnetic radiation.,B,"(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Such questions can be answered jes (yes) or ne (no) in the European fashion of aligning with the polarity of the answer, or ĝuste (correct) or malĝuste (incorrect) in the Japanese fashion of aligning with the polarity of the question:
+
+Unlike decision problems, for which there is only one correct answer for each input, optimization problems are concerned with finding the best answer to a particular input.  Optimization problems arise naturally in many applications, such as the traveling salesman problem and many questions in linear programming.",0.4,local,"choose the correct answer: what is the ""ultraviolet catastrophe""?",3547728905
+1933,Select the most accurate option: What is the main sequence in astronomy? from the following choices.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar structure.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"An option ROM should normally return to the BIOS after completing its initialization process. Once (and if) an option ROM returns, the BIOS continues searching for more option ROMs, calling each as it is found, until the entire option ROM area in the memory space has been scanned. It is possible that an option ROM will not return to BIOS, pre-empting the BIOS's boot sequence altogether.
+
+Use in astronomy 
+While the total number of ""catalytic"" nuclei are conserved in the cycle, in stellar evolution the relative proportions of the nuclei are altered.  When the cycle is run to equilibrium, the ratio of the carbon-12/carbon-13 nuclei is driven to 3.5, and nitrogen-14 becomes the most numerous nucleus, regardless of initial composition.  During a star's evolution, convective mixing episodes moves material, within which the CNO cycle has operated, from the star's interior to the surface, altering the observed composition of the star. Red giant stars are observed to have lower carbon-12/carbon-13 and carbon-12/nitrogen-14 ratios than do main sequence stars, which is considered to be convincing evidence for the operation of the CNO cycle.",0.5555555555555556,local,select the most accurate option: what is the main sequence in astronomy? from the following choices.,894489178
+1934,Choose the correct answer: What did Fresnel predict and verify with regards to total internal reflections? based on the given context.,"Fresnel predicted and verified that three total internal reflections at 75°27' would give a precise circular polarization if two of the reflections had water as the external medium and the third had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that eight total internal reflections at 68°27' would give an accurate circular polarization if four of the reflections had water as the external medium while the other four had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 30°27' would result in circular polarization if two of the reflections had water as the external medium while the other two had air, regardless if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that two total internal reflections at 68°27' would give an accurate linear polarization if one of the reflections had water as the external medium and the other had air, but not if the reflecting surfaces were all wet or all dry.","Fresnel predicted and verified that four total internal reflections at 68°27' would give a precise circular polarization if two of the reflections had water as the external medium while the other two had air, but not if the reflecting surfaces were all wet or all dry.",E,"The French civil engineer and physicist Augustin-Jean Fresnel (1788–1827) made contributions to several areas of physical optics, including to diffraction, polarization, and double refraction.",0.07142857142857142,live_api,choose the correct answer: what did fresnel predict and verify with regards to total internal reflections? based on the given context.,3150708762
+1935,What is the mechanism of FTIR?,"The mechanism of FTIR is called ray optics, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called scattering, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called frustrated TIR, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called evanescent-wave coupling, which is a good analog to visualize quantum tunneling.","The mechanism of FTIR is called total internal reflection microscopy, which is a good analog to visualize quantum tunneling.",D,"The only pictorial evidence of Roman arcuballistas comes from sculptural reliefs in Roman Gaul depicting them in hunting scenes. These are aesthetically similar to both the Greek and Chinese crossbow but it is not clear what kind of release mechanism they used. Archaeological evidence suggests they were similar to the rolling nut mechanism of medieval Europe.
+
+Because its mechanism is primitive compared to most modern woodwinds, makers have occasionally attempted to ""reinvent"" the bassoon. In the 1960s, Giles Brindley began to develop what he called the ""logical bassoon"", which aimed to improve intonation and evenness of tone through use of an electrically activated mechanism, making possible key combinations too complex for the human hand to manage. Brindley's logical bassoon was never marketed.
+
+Mechanism of episomal retention 
+The mechanism behind episomal retention in the case of S/MAR episomes is still uncertain. As of 1985, in the case of latent Epstein-Barr virus infection, episomes seemed to be associated with nuclear proteins of the host cell through a set of viral proteins.",0.5,local,what is the mechanism of ftir?,2603440181
+1936,Identify the correct statement: What is the identity operation in symmetry groups? from the following choices.,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"Although the semi-localized textbook σ-π separation model describes the bonding of allene using a pair of localized orthogonal π orbitals, the full molecular orbital description of the bonding is more subtle.  The symmetry-correct doubly-degenerate HOMOs of allene (adapted to the D2d point group) can either be represented by a pair of orthogonal MOs or as twisted helical linear combinations of these orthogonal MOs.  The symmetry of the system and the degeneracy of these orbitals imply that both descriptions are correct (in the same way that there are infinitely many ways to depict the doubly-degenerate HOMOs and LUMOs of benzene that correspond to different choices of eigenfunctions in a two-dimensional eigenspace).  However, this degeneracy is lifted in substituted allenes, and the helical picture becomes the only symmetry-correct description for the HOMO and HOMO–1 of the C2-symmetric . This qualitative MO description extends to higher odd-carbon cumulenes (e.g., 1,2,3,4-pentatetraene).
+
+In the 1980s, increased assimilation and economic mobility motivated many to embrace Hispanic identity in an era of conservatism. The term Hispanic emerged from consultation between the U.S. government and Mexican-American political elites in the Hispanic Caucus of Congress. They used the term to identify themselves and the community with mainstream American culture, depart from Chicanismo, and distance themselves from what they perceived as the ""militant"" Black Caucus.
+
+Churchmanship
+Churchmanship can be defined as the manifestation of theology in the realms of liturgy, piety and, to some extent, spirituality. Anglican diversity in this respect has tended to reflect the diversity in the tradition's Reformed and Catholic identity. Different individuals, groups, parishes, dioceses and provinces may identify more closely with one or the other, or some mixture of the two.",0.6666666666666666,local,identify the correct statement: what is the identity operation in symmetry groups? from the following choices.,3633507447
+1937,Which of the following is correct? What is the origin of the radio emission observed from supernova remnants? from the following choices.,The radio emission from supernova remnants originates from the rebound of gas falling inward during the supernova explosion. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from high-velocity electrons oscillating within magnetic fields. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the fusion of hydrogen and helium in the core of the star. This emission is a form of non-thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the expansion of the shell of gas during the supernova explosion. This emission is a form of thermal emission called synchrotron emission.,The radio emission from supernova remnants originates from the ionized gas present in the remnants. This emission is a form of thermal emission called synchrotron emission.,B,"Antlia is home to the huge Antlia Supernova Remnant, one of the largest supernova remnants in the sky.
+
+On 9 January 1992, radio astronomers Aleksander Wolszczan and Dale Frail announced the discovery of two planets orbiting the millisecond pulsar PSR 1257+12 based on the variability of timing of the pulses. This discovery was confirmed, and is generally considered to be the first definitive detection of exoplanets. Follow-up observations solidified these results, and confirmation of a third planet in 1994 revived the topic in the popular press. These pulsar planets are thought to have formed from the unusual remnants of the supernova that produced the pulsar, in a second round of planet formation, or else to be the remaining rocky cores of gas giants that somehow survived the supernova and then decayed into their current orbits. As pulsars are aggressive stars, it was considered unlikely at the time that a planet could form in their orbit.
+
+In April 2003, the Supernova Legacy Survey observed a type Ia supernova, designated SNLS-03D3bb, in a galaxy approximately 4 billion light years away. According to astronomers at the University of Toronto and elsewhere, the observations of this supernova are best explained by assuming that it arose from a white dwarf that had grown to twice the mass of the Sun before exploding.",0.4,local,which of the following is correct? what is the origin of the radio emission observed from supernova remnants? from the following choices.,934590369
+1938,Determine the correct option: What is resistivity? from the following choices.,Resistivity is an extrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the resistance of a material to electrical current flow. It is measured in ohm-meters and is dependent on the material's shape and size.,Resistivity is an intrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohm-meters and is independent of the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohm-meters and is independent of the material's shape and size.,C,"An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:",0.5,local,determine the correct option: what is resistivity? from the following choices.,1593452570
+1939,Select the most accurate option: What is a planetary mechanism? carefully.,A mechanism of planets that are all located in the same solar mechanism.,A structure of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star mechanism.,A structure of planets that are all located in the same galaxy.,A framework of planets that are all made of gas.,C,"The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy. The Hubble Space Telescope is named after astronomer Edwin Hubble and is one of NASA's Great Observatories. The Space Telescope Science Institute (STScI) selects Hubble's targets and processes the resulting data, while the Goddard Space Flight Center (GSFC) controls the spacecraft.
+Hubble features a 2.4 m (7 ft 10 in) mirror, and its five main instruments observe in the ultraviolet, visible, and near-infrared regions of the electromagnetic spectrum. Hubble's orbit outside the distortion of Earth's atmosphere allows it to capture extremely high-resolution images with substantially lower background light than ground-based telescopes. It has recorded some of the most detailed visible light",0.14285714285714285,live_api,select the most accurate option: what is a planetary mechanism? carefully.,899574062
+1940,Pick the best possible answer: What is the butterfly effect? among the listed options.,"The butterfly effect is a physical cause that occurs when a massive sphere is caused to roll down a slope starting from a point of unstable equilibrium, and its velocity is assumed to be caused by the force of gravity accelerating it.",The butterfly effect is a distributed causality that opens up the opportunity to understand the relationship between necessary and sufficient conditions in classical (Newtonian) physics.,The butterfly effect is a proportionality between the cause and the effect of a physical phenomenon in classical (Newtonian) physics.,The butterfly effect is a small push that is needed to set a massive sphere into motion when it is caused to roll down a slope starting from a point of unstable equilibrium.,The butterfly effect is a phenomenon that highlights the contrast between the application of the notion of causality in physics and a more general use of causality as represented by Mackie's INUS conditions.,E,"The phrase refers to the effect of a butterfly's wings creating tiny changes in the atmosphere that may ultimately alter the path of a tornado or delay, accelerate, or even prevent the occurrence of a tornado in another location. The butterfly does not power or directly create the tornado, but the term is intended to imply that the flap of the butterfly's wings can cause the tornado: in the sense that the flap of the wings is a part of the initial conditions of an interconnected complex web; one set of conditions leads to a tornado, while the other set of conditions doesn't. The flapping wing creates a small change in the initial condition of the system, which cascades to large-scale alterations of events (compare: domino effect). Had the butterfly not flapped its wings, the trajectory of the system might have been vastly different—but it's also equally possible that the set of conditions without the butterfly flapping its wings is the set that leads to a tornado.
+
+Other authors suggest that the butterfly effect can be observed in quantum systems. Zbyszek P. Karkuszewski et al. consider the time evolution of quantum systems which have slightly different Hamiltonians. They investigate the level of sensitivity of quantum systems to small changes in their given Hamiltonians. David Poulin et al. presented a quantum algorithm to measure fidelity decay, which ""measures the rate at which identical initial states diverge when subjected to slightly different dynamics"". They consider fidelity decay to be ""the closest quantum analog to the (purely classical) butterfly effect"". Whereas the classical butterfly effect considers the effect of a small change in the position and/or velocity of an object in a given Hamiltonian system, the quantum butterfly effect considers the effect of a small change in the Hamiltonian system with a given initial position and velocity. This quantum butterfly effect has been demonstrated experimentally. Quantum and semiclassical treatments of system sensitivity to initial conditions are known as quantum chaos.
+
+Differentiating types of butterfly effects 
+The concept of the butterfly effect encompasses several phenomena. The two kinds of butterfly effects, including the sensitive dependence on initial conditions, and the ability of a tiny perturbation to create an organized circulation at large distances, are not exactly the same. In Palmer et al., a new type of butterfly effect is introduced, highlighting the potential impact of small-scale processes on finite predictability within the Lorenz 1969 model. Additionally, the identification of ill-conditioned aspects of the Lorenz 1969 model points to a practical form of finite predictability. These two distinct mechanisms suggesting finite predictability in the Lorenz 1969 model are collectively referred to as the third kind of butterfly effect. The authors in  have considered Palmer et al.'s suggestions and have aimed to present their perspective without raising specific contentions.",0.3333333333333333,local,pick the best possible answer: what is the butterfly effect? among the listed options.,3021791404
+1941,Which of the following is correct? What is the role of methane in Fischer-Tropsch processes? from the following choices.,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,"With regard to synthetic fuels, an old but still important process is the Fischer–Tropsch synthesis of hydrocarbons from synthesis gas, which itself is processed via water-gas shift reactions, catalyzed by iron. The Sabatier reaction produces methane from carbon dioxide and hydrogen. Biodiesel and related biofuels require processing via both inorganic and biocatalysts.
+
+Methanol is produced by the hydrogenation of carbon monoxide. In a related reaction, the hydrogenation of carbon monoxide is coupled to C−C bond formation, as in the Fischer–Tropsch process where carbon monoxide is hydrogenated to liquid hydrocarbon fuels. This technology allows coal or biomass to be converted to diesel.
+
+Additional case descriptions by Alzheimer and his colleagues continued in the following years, including older patients than the early-onset dementia of Auguste Deter. Alzheimer eventually conceived ""his"" disease as mainly characterized clinically by a severe dementia with instrumental symptoms, and pathologically by extended neurofibrillary tangles. He debated fiercely with Oskar Fischer, a German-speaking pathologist from Prague, who instead emphasized on the importance of neuritic plaques and of presbyophrenia as the phenotype. Finally, it must be highlighted that Fischer–Alzheimer's nosological considerations had less impact than Kraepelin's 1910 Textbook of Psychiatry, which distinguished between ""Alzheimer's disease"" and senile dementia, including presbyophrenia. This textbook had a strong influence on early 20th century research on senile dementia and played a significant role in the classification of dementia in the following decades.",0.6666666666666666,local,which of the following is correct? what is the role of methane in fischer-tropsch processes? from the following choices.,2570392140
+1942,Select the most accurate option: What is the relationship between the complete electromagnetic Hamiltonian of a molecule and the parity operation?,"The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is dependent on the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule is invariant to the parity operation, and its eigenvalues can be given the parity symmetry label + or - depending on whether they are even or odd, respectively.","The complete electromagnetic Hamiltonian of any molecule does not involve the parity operation, and its eigenvalues cannot be given the parity symmetry label + or -.",D,"If the universe were reflected in a mirror, most of the laws of physics would be identical—things would behave the same way regardless of what we call ""left"" and what we call ""right"". This concept of mirror reflection is called ""intrinsic parity"" or simply ""parity"" (P). Gravity, the electromagnetic force, and the strong interaction all behave in the same way regardless of whether or not the universe is reflected in a mirror, and thus are said to conserve parity (P-symmetry). However, the weak interaction does distinguish ""left"" from ""right"", a phenomenon called parity violation (P-violation).
+
+Energy levels 
+The molecular term symbol is a shorthand expression of the angular momenta that characterize the electronic quantum states of a diatomic molecule, which are also eigenstates of the electronic molecular Hamiltonian. It is also convenient, and common, to represent a diatomic molecule as two-point masses connected by a massless spring. The energies involved in the various motions of the molecule can then be broken down into three categories: the translational, rotational, and vibrational energies. The theoretical study of the rotational energy levels of the diatomic molecules can be described using the below description of the rotational energy levels. While the study of vibrational energy level of the diatomic molecules can be described using the harmonic oscillator approximation or using the quantum vibrational interaction potentials. These potentials give more accurate energy levels because they take multiple vibrational effects into account.
+
+Most commonly, the term constitution refers to a set of rules and principles that define the nature and extent of government. Most constitutions seek to regulate the relationship between institutions of the state, in a basic sense the relationship between the executive, legislature and the judiciary, but also the relationship of institutions within those branches. For example, executive branches can be divided into a head of government, government departments/ministries, executive agencies and a civil service/administration. Most constitutions also attempt to define the relationship between individuals and the state, and to establish the broad rights of individual citizens. It is thus the most basic law of a territory from which all the other laws and rules are hierarchically derived; in some territories it is in fact called ""Basic Law"".",0.6666666666666666,local,select the most accurate option: what is the relationship between the complete electromagnetic hamiltonian of a molecule and the parity operation?,2657789970
+1943,Choose the correct answer: What is the significance of probability amplitudes in quantum mechanics? among the listed options.,Probability amplitudes are used to determine the mass of particles in quantum mechanics.,Probability amplitudes have no significance in quantum mechanics.,Probability amplitudes are used to determine the velocity of particles in quantum mechanics.,"Probability amplitudes act as the equivalent of conventional probabilities in classical mechanics, with many analogous laws.","Probability amplitudes act as the equivalent of conventional probabilities in quantum mechanics, with many analogous laws.",E,"Standard quantum physics 
+The standard interpretation of the double slit experiment is that the pattern is a wave phenomenon, representing interference between two probability amplitudes, one for each slit. Low intensity experiments demonstrate that the pattern is filled in one particle detection at a time. Any change to the apparatus designed to detect a particle at a particular slit alters the probability amplitudes and the interference disappears. This interpretation is independent of any conscious observer.
+
+Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .
+
+In modern quantum mechanics, the electron in hydrogen is a spherical cloud of probability that grows denser near the nucleus. The rate-constant of probability-decay in hydrogen is equal to the inverse of the Bohr radius, but since Bohr worked with circular orbits, not zero area ellipses, the fact that these two numbers exactly agree is considered a ""coincidence"". (However, many such coincidental agreements are found between the semiclassical vs. full quantum mechanical treatment of the atom; these include identical energy levels in the hydrogen atom and the derivation of a fine-structure constant, which arises from the relativistic Bohr–Sommerfeld model (see below) and which happens to be equal to an entirely different concept, in full modern quantum mechanics).",0.45454545454545453,local,choose the correct answer: what is the significance of probability amplitudes in quantum mechanics? among the listed options.,2001937553
+1944,"Identify the correct statement: Which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? from the following choices.",One's dominant hand,The right hand,Both hands,The left hand,Either hand,B,No match found.,0.0,live_api,"identify the correct statement: which hand should be used to apply the right-hand rule when tightening or loosening nuts, screws, bolts, bottle caps, and jar lids? from the following choices.",4157605619
+1945,Choose the correct answer: What is a planetary mechanism? based on the given context.,A mechanism of planets that are all located in the same solar mechanism.,A framework of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star structure.,A framework of planets that are all located in the same galaxy.,A framework of planets that are all made of gas.,C,"In one incarnation, the machine was a box that housed a list of questions that could be viewed one at a time through a small window. (see picture.) There was also a mechanism through which the learner could respond to each question. Upon delivering a correct answer, the learner would be rewarded.
+
+Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.875,local,choose the correct answer: what is a planetary mechanism? based on the given context.,981357933
+1946,Pick the best possible answer: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory? from the following choices.,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,No match found.,0.0,live_api,pick the best possible answer: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory? from the following choices.,666612830
+1947,Which of the following is correct? What is the Erlangen program? based on the given context.,"The Erlangen program is a procedure of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on group framework and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a technique of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In 2021, the Student Council of the University of Erlangen–Nuremberg changed the name of their Süd-Campus into Rommel-Campus, emphasising that the city of Erlangen stands behind the name and the university needs to do the same. The university's branch of the Education and Science Workers' Union describes the decision as problematic considering Rommel's history of supporting the Nazi regime.",0.75,local,which of the following is correct? what is the erlangen program? based on the given context.,2711606425
+1948,Select the most accurate option: What is a planetary mechanism? based on the given context.,A mechanism of planets that are all located in the same solar mechanism.,A structure of planets that are all the same size and shape.,Any set of gravitationally bound non-stellar objects in or out of orbit around a star or star mechanism.,A mechanism of planets that are all located in the same galaxy.,A framework of planets that are all made of gas.,C,"Biology cannot state that a process or phenomenon, by being mathematically possible, has to exist forcibly in an extraterrestrial body. Biologists specify what is speculative and what is not. The discovery of extremophiles, organisms able to survive in extreme environments, became a core research element for astrobiologists, as they are important to understand four areas in the limits of life in planetary context: the potential for panspermia, forward contamination due to human exploration ventures, planetary colonization by humans, and the exploration of extinct and extant extraterrestrial life.""Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context."" N. Merino, H.S. Aronson, D. Bojanova, J. Feyhl-Buska, et al. EarthArXiv. February 2019.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.4444444444444444,local,select the most accurate option: what is a planetary mechanism? based on the given context.,1335405440
+1949,Which of the following is correct? What is resistivity? carefully.,Resistivity is an extrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the resistance of a material to electrical current flow. It is measured in ohm-meters and is dependent on the material's shape and size.,Resistivity is an intrinsic property of a material that describes how difficult it is to make electrical current flow through it. It is measured in ohm-meters and is independent of the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohms and is dependent on the material's shape and size.,Resistivity is a measure of the electrical current that can flow through a material. It is measured in ohm-meters and is independent of the material's shape and size.,C,"In accordance with magnetic data, electrical resistivity of curium increases with temperature – about twice between 4 and 60 K – and then is nearly constant up to room temperature. There is a significant increase in resistivity over time (~) due to self-damage of the crystal lattice by alpha decay. This makes uncertain the true resistivity of curium (~). Curium's resistivity is similar to that of gadolinium, and the actinides plutonium and neptunium, but significantly higher than that of americium, uranium, polonium and thorium.
+
+As with many other actinides, self-damage of the crystal structure due to alpha-particle irradiation is intrinsic to americium. It is especially noticeable at low temperatures, where the mobility of the produced structure defects is relatively low, by broadening of X-ray diffraction peaks. This effect makes somewhat uncertain the temperature of americium and some of its properties, such as electrical resistivity. So for americium-241, the resistivity at 4.2 K increases with time from about 2 μOhm·cm to 10 μOhm·cm after 40 hours, and saturates at about 16 μOhm·cm after 140 hours. This effect is less pronounced at room temperature, due to annihilation of radiation defects; also heating to room temperature the sample which was kept for hours at low temperatures restores its resistivity. In fresh samples, the resistivity gradually increases with temperature from about 2 μOhm·cm at liquid helium to 69 μOhm·cm at room temperature; this behavior is similar to that of neptunium, uranium, thorium and protactinium, but is different from plutonium and curium which show a rapid rise up to 60 K followed by saturation. The room temperature value for americium is lower than that of neptunium, plutonium and curium, but higher than for uranium, thorium and protactinium.
+
+TDMA systems must carefully synchronize the transmission times of all the users to ensure that they are received in the correct time slot and do not cause interference.  Since this cannot be perfectly controlled in a mobile environment, each time slot must have a guard time, which reduces the probability that users will interfere, but decreases the spectral efficiency.",0.8,local,which of the following is correct? what is resistivity? carefully.,434113136
+1950,Choose the correct answer: What is the reason for the stochastic nature of all observed resistance-switching processes? based on the given context.,"The free-energy barriers for the transition {i} → {j} are not high enough, and the memory device can switch without having to do anything.","The device is subjected to random thermal fluctuations, which trigger the switching event, but it is impossible to predict when it will occur.","The memory device is found to be in a distinct resistance state {j}, and there exists no physical one-to-one relationship between its present state and its foregoing voltage history.","The device is subjected to biases below the threshold value, which still allows for a finite probability of switching, but it is possible to predict when it will occur.","The external bias is set to a value above a certain threshold value, which reduces the free-energy barrier for the transition {i} → {j} to zero.",B,"Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. These laws, which provide the basis for Newtonian mechanics, can be paraphrased as follows:
+
+A body remains at rest, or in motion at a constant speed in a straight line, unless it is acted upon by a force.
+At any instant of time, the net force on a body is equal to the body's acceleration multiplied by its mass or, equivalently, the rate at which the body's momentum is changing with time.
+If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.
+The three laws of motion were first stated by Isaac Newton in his Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), originally published in 1687. Newton used them to investigate and explain the motion of many physical objects and systems. In the time since Newton, new insights, especially around the concept of energy, b",0.0,live_api,choose the correct answer: what is the reason for the stochastic nature of all observed resistance-switching processes? based on the given context.,1350889801
+1951,"Select the most accurate option: What is the meaning of the term ""horror vacui""? among the listed options.",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate mechanism.,The spatial-corporeal component of Descartes' metaphysics.,B,"The  and  two commands specify how arguments of some available commands or options are going to be listed in the readline input.As of version 5.1 completion of the command or the option is usually activated by the  keystroke after typing its name.
+This feature is available in interactive mode only.",0.2727272727272727,local,"select the most accurate option: what is the meaning of the term ""horror vacui""? among the listed options.",3706043327
+1952,"Select the most accurate option: Who proposed the concept of ""maximal acceleration""? among the listed options.",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,This article lists a number of significant events in science that have occurred in the first quarter of 2023.,0.0,live_api,"select the most accurate option: who proposed the concept of ""maximal acceleration""? among the listed options.",254519321
+1953,Pick the best possible answer: How many crystallographic point groups are there in three-dimensional space? among the listed options.,7,32,14,5,27,B,No match found.,0.0,live_api,pick the best possible answer: how many crystallographic point groups are there in three-dimensional space? among the listed options.,2619012379
+1954,Determine the correct option: What are some models that attempt to account for all observations without invoking supplemental non-baryonic matter?,"The Doppler effect, the photoelectric effect, or the Compton effect.","The Higgs boson, the W boson, or the Z boson.","Modified Newtonian dynamics, tensor–vector–scalar gravity, or entropic gravity.","The strong nuclear force, the weak nuclear force, or the electromagnetic force.","Kepler's laws, Newton's laws, or Einstein's framework of general relativity.",C,No match found.,0.0,live_api,determine the correct option: what are some models that attempt to account for all observations without invoking supplemental non-baryonic matter?,3519207012
+1955,Choose the correct answer: Which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? based on the given context.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the magnetization of the ferromagnetic layer becomes aligned with the magnetic field. The blocking temperature is typically higher than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature below which the layer loses its ability to ""pin"" the magnetization direction of an adjacent ferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer becomes completely demagnetized. The blocking temperature is typically higher than the Néel temperature.,The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at or above which the layer ceases to prevent the orientation of an adjacent ferromagnetic layer. The blocking temperature is typically lower than the Néel temperature.,"The blocking temperature of an antiferromagnetic layer in a spin valve is the temperature at which the ferromagnetic layer loses its ability to ""pin"" the magnetization direction of an adjacent antiferromagnetic layer. The blocking temperature is typically higher than the Néel temperature.",D,No match found.,0.0,live_api,choose the correct answer: which of the following statements accurately describes the blocking temperature of an antiferromagnetic layer in a spin valve? based on the given context.,2107683263
+1956,Determine the correct option: What is the gravitomagnetic interaction? based on the given context.,The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials with linear properties that enhance time-varying gravitational fields.,"The gravitomagnetic interaction is a force that acts against gravity, produced by materials that have nonlinear properties that enhance time-varying gravitational fields.","The gravitomagnetic interaction is a new force of nature generated by rotating matter, whose intensity is proportional to the rate of spin, according to the general principle of relativity.","The gravitomagnetic interaction is a force that occurs in neutron stars, producing a gravitational analogue of the Meissner effect.",The gravitomagnetic interaction is a force that is produced by the rotation of atoms in materials of different gravitational permeability.,C,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Sociologists representing symbolic interactionism argue that social rules are created through the interaction between the members of a society. The focus on active interaction highlights the fluid, shifting character of social rules. These are specific to the social context, a context that varies through time and place. That means a social rule changes over time within the same society. What was acceptable in the past may no longer be the case. Similarly, rules differ across space: what is acceptable in one society may not be so in another.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.75,local,determine the correct option: what is the gravitomagnetic interaction? based on the given context.,2777310090
+1957,What are the Navier-Stokes equations?,"The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for non-Newtonian fluids.","The Navier-Stokes equations are partial differential equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of non-viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.","The Navier-Stokes equations are algebraic equations that describe the motion of viscous fluid substances, expressing momentum balance and conservation of mass for Newtonian fluids.",A,"Together, these equations are known as the Navier–Stokes equations, although some authors define the term to only include the momentum equation(s). The Navier–Stokes equations have no known analytical solution and are solved in modern aerodynamics using computational techniques. Because computational methods using high speed computers were not historically available and the high computational cost of solving these complex equations now that they are available, simplifications of the Navier–Stokes equations have been and continue to be employed. The Euler equations are a set of similar conservation equations which neglect viscosity and may be used in cases where the effect of viscosity is expected to be small. Further simplifications lead to Laplace's equation and potential flow theory. Additionally, Bernoulli's equation is a solution in one dimension to both the momentum and energy conservation equations.
+
+In 1726, Sir Isaac Newton became the first person to develop a theory of air resistance, making him one of the first aerodynamicists. Dutch-Swiss mathematician Daniel Bernoulli followed in 1738 with Hydrodynamica in which he described a fundamental relationship between pressure, density, and flow velocity for incompressible flow known today as Bernoulli's principle, which provides one method for calculating aerodynamic lift. In 1757, Leonhard Euler published the more general Euler equations which could be applied to both compressible and incompressible flows. The Euler equations were extended to incorporate the effects of viscosity in the first half of the 1800s, resulting in the Navier–Stokes equations. The Navier–Stokes equations are the most general governing equations of fluid flow but are difficult to solve for the flow around all but the simplest of shapes.
+
+is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable  is called a nonconserved quantity, and the inhomogeneous term  is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.",1.0,local,what are the navier-stokes equations?,1660298183
+1958,"What is the meaning of the term ""horror vacui""?",The quantified extension of volume in empty space.,The commonly held view that nature abhorred a vacuum.,The medieval thought experiment into the idea of a vacuum.,The success of Descartes' namesake coordinate system.,The spatial-corporeal component of Descartes' metaphysics.,B,"For Walter Benjamin in his study of the Origin, the almost pathological-seeming (or at any rate historically aberrant and intense) elaboration of detail and tendency toward recursive involutions or even the horror vacui quality of cultural production characteristic of the era arises as a psychic defense or digressive suppression of terror and anomie in the absence of the symbolically transcendent authority so long manifest in the institutions and ritual forms of absolution projected across the continent by the Western Church in Rome in the collapse of its continental supremacy in administration and social control—a process which has sometimes been called the ‘dismemberment of Christendom,’ or more positively the birth of modernity and thus also of the hegemony of capitalism, as Max Weber and various other (including Hugh Trevor Roper’s Crisis of the Seventeenth Century and his more famous monograph on the European Witch Craze).
+
+The term ""Mitteleuropa"" conjures up negative historical associations among some people although the Germans have not played an exclusively negative role in the region. Most Central European Jews embraced the enlightened German humanistic culture of the 19th century. Jews at the turn of the 20th century became representatives of what many consider to be Central European culture at its best, but the Nazi conceptualisation of ""Mitteleuropa"" sought to destroy that culture. The term ""Mitteleuropa"" is widely used in German education and media without a negative meaning, especially since the end of communism. Many people from the new states of Germany do not identify themselves as being part of Western Europe and therefore prefer the term ""Mitteleuropa"".
+
+The name ""England"" is derived from the Old English name , which means ""land of the Angles"". The Angles were one of the Germanic tribes that settled in Great Britain during the Early Middle Ages. They came from the Angeln region of what is now the German state of Schleswig-Holstein.. The earliest recorded use of the term, as """", is in the late-ninth-century translation into Old English of Bede's Ecclesiastical History of the English People. The term was then used to mean ""the land inhabited by the English"", and it included English people in what is now south-east Scotland but was then part of the English kingdom of Northumbria. The Anglo-Saxon Chronicle recorded that the Domesday Book of 1086 covered the whole of England, meaning the English kingdom, but a few years later the Chronicle stated that King Malcolm III went ""out of Scotlande into Lothian in Englaland"", thus using it in the more ancient sense.",1.0,local,"what is the meaning of the term ""horror vacui""?",3056854616
+1959,"Select the most accurate option: Who proposed the concept of ""maximal acceleration""?",Max Planck,Niels Bohr,Eduardo R. Caianiello,Hideki Yukawa,Albert Einstein,C,"The speed of light in vacuum, often called simply the speed of light and commonly denoted c, is a universal physical constant exactly equal to 299792458 m⋅s−1. It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. The value 299,792,458 metres per second is approximately 1 billion kilometres per hour; 700 million miles per hour. For other approximations of c valid for various units and size scales see the infobox.
+All forms of electromagnetic radiation, including visible light, travel in vacuum at the speed c as do massless particles and field perturbations, such as gravitational waves. The speed of light is the same for all observers, no matter their relative velocity. As a result, massless particles and waves travel at c in a vacuum regardless of the motion of the source or the inertial reference frame of the observer. The speed of light is the upper limit for the speed a",0.0,live_api,"select the most accurate option: who proposed the concept of ""maximal acceleration""?",3219895945
+1960,Determine the correct option: What is Hesse's principle of transfer in geometry? among the listed options.,Hesse's principle of transfer is a concept in biology that explains the transfer of genetic information from one generation to another.,Hesse's principle of transfer is a concept in chemistry that explains the transfer of electrons between atoms in a chemical reaction.,Hesse's principle of transfer is a concept in physics that explains the transfer of energy from one object to another.,Hesse's principle of transfer is a concept in economics that explains the transfer of wealth from one individual to another.,"Hesse's principle of transfer is a concept in geometry that states that if the points of the projective line P1 are depicted by a rational normal curve in Pn, then the group of the projective transformations of Pn that preserve the curve is isomorphic to the group of the projective transformations of P1.",E,No match found.,0.0,live_api,determine the correct option: what is hesse's principle of transfer in geometry? among the listed options.,995295537
+1961,Determine the correct option: What is the Optical Signal-to-Noise Ratio (OSNR)? from the following choices.,"The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the modulation frequency and the carrier frequency of an optical signal, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality without taking the receiver into account.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a fixed bandwidth of 6.02m, used to describe the signal quality in structures where dynamic range is less than 6.02m.","The Optical Signal-to-Noise Ratio (OSNR) is the ratio between the signal power and the noise power in a given bandwidth, used to describe the signal quality in situations where the dynamic range is large or unpredictable.",B,"Video and digital imaging 
+In connection with video and digital image sensors, decibels generally represent ratios of video voltages or digitized light intensities, using 20 log of the ratio, even when the represented intensity (optical power) is directly proportional to the voltage generated by the sensor, not to its square, as in a CCD imager where response voltage is linear in intensity.
+Thus, a camera signal-to-noise ratio or dynamic range quoted as 40 dB represents a ratio of 100:1 between optical signal intensity and optical-equivalent dark-noise intensity, not a 10,000:1 intensity (power) ratio as 40 dB might suggest.
+Sometimes the 20 log ratio definition is applied to electron counts or photon counts directly, which are proportional to sensor signal amplitude without the need to consider whether the voltage response to intensity is linear.
+
+Signals and noise 
+One of the most important components of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise ratio (S/N or SNR).
+
+Noise 
+This is a measure of how much noise is introduced in the amplification process. Noise is an undesirable but inevitable product of the electronic devices and components; also, much noise results from intentional economies of manufacture and design time. The metric for noise performance of a circuit is noise figure or noise factor. Noise figure is a comparison between the output signal to noise ratio and the thermal noise of the input signal.",0.4,local,determine the correct option: what is the optical signal-to-noise ratio (osnr)? from the following choices.,2747615578
+1962,What is water hammer?,Water hammer is a type of water turbine used in hydroelectric generating stations to generate electricity.,Water hammer is a type of air trap or standpipe used to dampen the sound of moving water in plumbing systems.,Water hammer is a type of plumbing tool used to break pipelines and absorb the potentially damaging forces caused by moving water.,Water hammer is a type of water pump used to increase the pressure of water in pipelines.,"Water hammer is a loud banging noise resembling a hammering sound that occurs when moving water is suddenly stopped, causing a rise in pressure and resulting shock wave.",E,"In 599, an earthquake destroyed buildings throughout Yamato Province in what is now Nara Prefecture.Hammer, Joshua. (2006). Yokohama Burning: The Deadly 1923 Earthquake and Fire that Helped Forge the Path to World War II, pp. 62–63.
+
+Olav Hammer suggests that anthroposophy carries scientism ""to lengths unparalleled in any other Esoteric position"" due to its dependence upon claims of clairvoyant experience, its subsuming natural science under ""spiritual science"". Hammer also asserts that the development of what he calls ""fringe"" sciences such as anthroposophic medicine and biodynamic agriculture are justified partly on the basis of the ethical and ecological values they promote, rather than purely on a scientific basis.
+
+Hammer  
+The last rock in an end is called the hammer, and throwing the hammer gives a team a tactical advantage. Before the game, teams typically decide who gets the hammer in the first end either by chance (such as a coin toss), by a ""draw-to-the-button"" contest, where a representative of each team shoots to see who gets closer to the centre of the rings, or, particularly in tournament settings like the Winter Olympics, by a comparison of each team's win–loss record. In all subsequent ends, the team that did not score in the preceding end gets to throw second, thus having the hammer. In the event that neither team scores, called a blanked end, the hammer remains with the same team. Naturally, it is easier to score points with the hammer than without; the team with the hammer generally tries to score two or more points. If only one point is possible, the skip may try to avoid scoring at all in order to retain the hammer the next end, giving the team another chance to use the hammer advantage to try to score two points. Scoring without the hammer is commonly referred to as stealing, or a steal, and is much more difficult.",0.5,local,what is water hammer?,167127017
+1963,Choose the correct answer: What is the main sequence in astronomy? based on the given context.,The main sequence is a type of galaxy that contains a large number of stars.,The main sequence is a type of black hole that is formed from the collapse of a massive star.,The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. Stars on this band are known as main-sequence stars or dwarf stars.,The main sequence is a group of planets that orbit around a star in a solar structure.,The main sequence is a type of nebula that is formed from the explosion of a supernova.,C,"Any research in life sciences is proposed to answer a scientific question we might have. To answer this question with a high certainty, we need accurate results. The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design, data collection methods, data analysis perspectives and costs involved. It is essential to carry the study based on the three basic principles of experimental statistics: randomization, replication, and local control.
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.
+
+In many collation algorithms, the comparison is based not on the numerical codes of the characters, but with reference to the collating sequence''' – a sequence in which the characters are assumed to come for the purpose of collation – as well as other ordering rules appropriate to the given application. This can serve to apply the correct conventions used for alphabetical ordering in the language in question, dealing properly with differently cased letters, modified letters, digraphs, particular abbreviations, and so on, as mentioned above under Alphabetical order, and in detail in the Alphabetical order article. Such algorithms are potentially quite complex, possibly requiring several passes through the text.",0.7777777777777778,local,choose the correct answer: what is the main sequence in astronomy? based on the given context.,3690115528
+1964,Pick the best possible answer: What is the Maxwell's Demon thought experiment? based on the given context.,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an boost in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an raise in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a lower in temperature in one part and an enhance in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an raise in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"Professional wrestling, often referred to as pro wrestling, or simply, wrestling, is a form of athletic theater centered around mock combat, with the premise that its performers are competitive wrestlers. The legitimate sport of wrestling has never been popular enough in the United States to sustain a professional scene because the action is considered too slow-paced. In the late 19th century, wrestlers dealt with this by quietly fixing their matches so that they could display more entertaining action. Through improvisation and choreography, they could perform more spectacular moves that rarely (if ever) occurred in a real wrestling match, and thus managed to draw sustainable audiences.
+Match fixing in sports was frowned upon then as much as it is now, so the wrestlers kept the practice a secret. Wrestling promoters scripted victories for their more charismatic wrestlers to please the fans. Since charisma mattered more than skill to a wrestler's success, wrestlers adopted personae and",0.08333333333333333,live_api,pick the best possible answer: what is the maxwell's demon thought experiment? based on the given context.,109106854
+1965,Identify the correct statement: Who was Giordano Bruno?,A German philosopher who supported the Keplerian principle that planets move in elliptical orbits around the Sun and believed that fixed stars are similar to the Sun but have different designs and are not subject to the dominion of One.,An English philosopher who supported the Ptolemaic concept that Earth is the center of the universe and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,A French philosopher who supported the Aristotelian framework that Earth is at the center of the universe and believed that fixed stars are similar to the Sun but do not have planets orbiting them.,An Italian philosopher who supported the Copernican concept that Earth and other planets orbit the Sun and believed that fixed stars are similar to the Sun and have planets orbiting them.,A Spanish philosopher who supported the Galilean concept that Earth and other planets orbit the Sun and believed that fixed stars are not similar to the Sun and do not have planets orbiting them.,D,"Giordano Bruno and Spinoza 
+Schopenhauer saw Giordano Bruno and Spinoza as philosophers not bound to their age or nation. ""Both were fulfilled by the thought, that as manifold the appearances of the world may be, it is still one being, that appears in all of them. ... Consequently, there is no place for God as creator of the world in their philosophy, but God is the world itself.""
+
+The new ideas were met with resistance from the Catholic church. Galileo was tried for the heliocentric model, which was considered heretical, and forced to recant it.Bennett, p. 29 The best-known early-modern proponent of ideas of extraterrestrial life was the Italian philosopher Giordano Bruno, who argued in the 16th century for an infinite universe in which every star is surrounded by its own planetary system. Bruno wrote that other worlds ""have no less virtue nor a nature different to that of our earth"" and, like Earth, ""contain animals and inhabitants"". Bruno's belief in the plurality of worlds was one of the charges leveled against him by the Venetian Holy Inquisition, which tried and executed him.Aguilera Mochon, p. 8
+
+In the sixteenth century, the Italian philosopher Giordano Bruno, an early supporter of the Copernican theory that Earth and other planets orbit the Sun (heliocentrism), put forward the view that fixed stars are similar to the Sun and are likewise accompanied by planets.",0.5,local,identify the correct statement: who was giordano bruno?,1370735206
+1966,Determine the correct option: What was the aim of the Gravity Probe B (GP-B) mission? based on the given context.,To prove that pressure contributes equally to spacetime curvature as does mass-energy.,"To measure spacetime curvature near Earth, with particular emphasis on gravitomagnetism.",To measure the distribution of Fe and Al on the Moon's surface.,"To confirm the relatively large geodetic effect due to simple spacetime curvature, and is also known as de Sitter precession.",To measure the discrepancy between active and passive mass to about 10−12.,B,No match found.,0.0,live_api,determine the correct option: what was the aim of the gravity probe b (gp-b) mission? based on the given context.,3259604459
+1967,"Determine the correct option: What is a ""coffee ring"" in physics? from the following choices.",A type of coffee that is made by boiling coffee grounds in water.,"A pattern left by a particle-laden liquid after it is spilled, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",A type of coffee that is made by mixing instant coffee with hot water.,A type of coffee that is made by pouring hot water over coffee grounds in a filter.,"A pattern left by a particle-laden liquid after it evaporates, named for the characteristic ring-like deposit along the perimeter of a spill of coffee or red wine.",E,"An axially symmetric (for instance, harmonic) confining potential is commonly used for the study of vortices in BEC. To determine , the energy of  must be minimized, according to the constraint . This is usually done computationally, however, in a uniform medium, the following analytic form demonstrates the correct behavior, and is a good approximation:",0.375,local,"determine the correct option: what is a ""coffee ring"" in physics? from the following choices.",2474123115
+1968,Select the most accurate option: What is the explanation for the effective supersymmetry in quark-diquark models?,"Two different color charges close together appear as the corresponding anti-color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding color under coarse resolution, which makes a diquark cluster viewed with coarse resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as a quark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a baryon.","Two different color charges close together appear as the corresponding anti-color under fine resolution, which makes a diquark cluster viewed with fine resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.","Two different color charges close together appear as the corresponding anti-color under any resolution, which makes a diquark cluster viewed with any resolution effectively appear as an antiquark. Therefore, a baryon containing 3 valence quarks, of which two tend to cluster together as a diquark, behaves like a meson.",A,"Constraints on supersymmetry 
+For decades, the leading candidate for dark matter was the lightest neutralino predicted by supersymmetry. However, extensive searches through the conclusion of the LHC's run 3 (2022–2025) operations have failed to detect the superpartners (such as squarks and gluinos) predicted by supersymmetry models. By late 2025, the ATLAS and CMS collaborations had pushed exclusion limits for gluinos beyond 2.4 TeV, and limits for charginos and neutralinos (""electroweak-inos"") beyond 1 TeV in many scenarios. This persistent absence has ruled out the most favored parameter space for WIMPs, forcing theorists to consider more complex and fine-tuned models such as ""split supersymmetry,"" or to abandon supersymmetry candidates entirely.",0.3,local,select the most accurate option: what is the explanation for the effective supersymmetry in quark-diquark models?,908742306
+1969,Determine the correct option: What is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? among the listed options.,None of the above.,A thin cylindrical plastic rod.,A condensed-matter collective field ψ.,The cosmic microwave background.,A component of the Higgs field.,C,"The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Standard Model, the Higgs particle is a massive scalar boson that couples to (interacts with) particles whose mass arises from their interactions with the Higgs field, has zero spin, even (positive) parity, no electric charge, and no color charge. It is also very unstable, decaying into other particles almost immediately upon generation.
+The Higgs field is a scalar field with two neutral and two electrically charged components that form a complex doublet of the weak isospin SU(2) symmetry. Its ""sombrero potential"" leads it to take a nonzero value everywhere (including otherwise empty space), which breaks the weak isospin symmetry of the electroweak interaction and, via the Higgs mechanism, gives a rest mass to all massive elementary particles of the Standard M",0.21428571428571427,live_api,determine the correct option: what is the order parameter that breaks the electromagnetic gauge symmetry in superconductors? among the listed options.,602664587
+1970,"What is the purpose of expressing a map's scale as a ratio, such as 1:10,000?","To indicate the use of south-up orientation, as used in Ancient Africa and some maps in Brazil today.","To indicate the orientation of the map, such as whether the 0° meridian is at the top or bottom of the page.","To indicate the projection used to create the map, such as Buckminster Fuller's Dymaxion projection.","To indicate the arrangement of the map, such as the world map of Gott, Vanderbei, and Goldberg arranged as a pair of disks back-to-back.",To indicate the relationship between the size of the map and the size of the area being represented.,E,"Reporting large ratios 
+The logarithmic scale nature of the decibel means that a very large range of ratios can be represented by a convenient number. For example, 50 dB is easier to say than ""the two powers bear a 100,000 to 1 ratio"" or that ""one power is 10 the other"". Decibels express huge changes of a quantity with few digits of dB.
+
+As it originated from a need to express power ratios, two principal types of scaling of the decibel are used to provide consistency depending on whether the scaling refers to ratios of power quantities or root-power quantities. When expressing a power ratio, the corresponding change in decibels is defined as ten times the logarithm with base 10 of that ratio. That is, a change in power by a factor of 10 corresponds to a 10 dB change in level. When expressing root-power ratios, a change in amplitude by a factor of 10 corresponds to a 20 dB change in level. The decibel scales differ by a factor of two, so that the related power and root-power levels change by the same value in linear systems, where power is proportional to the square of amplitude.
+
+In understanding basic maps, the field of cartography can be divided into two general categories: general cartography and thematic cartography. General cartography involves those maps that are constructed for a general audience and thus contain a variety of features. General maps exhibit many reference and location systems and often are produced in a series. For example, the 1:24,000 scale topographic maps of the United States Geological Survey (USGS) are a standard as compared to the 1:50,000 scale Canadian maps. The government of the UK produces the classic 1:50,000 (replacing the older 1 inch to 1 mile) ""Ordnance Survey"" maps of the entire UK and with a range of correlated larger- and smaller-scale maps of great detail. Many private mapping companies have also produced thematic map series.",0.7,local,"what is the purpose of expressing a map's scale as a ratio, such as 1:10,000?",659601893
+1971,Determine the correct option: How many crystallographic point groups are there in three-dimensional space? from the following choices.,7,32,14,5,27,B,"Similarly, the position of any point in three-dimensional space can be specified by three Cartesian coordinates, which are the signed distances from the point to three mutually perpendicular planes. More generally,  Cartesian coordinates specify the point in an -dimensional Euclidean space for any dimension . These coordinates are the signed distances from the point to  mutually perpendicular fixed hyperplanes.",0.3076923076923077,local,determine the correct option: how many crystallographic point groups are there in three-dimensional space? from the following choices.,1387769834
+1972,Which of the following is correct? What is the Maxwell's Demon thought experiment?,"A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with different gases at equal temperatures. The demon selectively allows molecules to pass from one side to the other, causing an enhance in temperature in one part and a reduce in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with different gases at different temperatures. The demon selectively allows molecules to pass from one side to the other, causing a minimize in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing a reduce in temperature in one part and an enhance in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a macroscopic trapdoor in a wall separating two parts of a container filled with the same gas at equal temperatures. The demon selectively allows faster-than-average molecules to pass from one side to the other, causing an enhance in temperature in one part and a minimize in temperature in the other, contrary to the second law of thermodynamics.","A thought experiment in which a demon guards a microscopic trapdoor in a wall separating two parts of a container filled with the same gas at different temperatures. The demon selectively allows slower-than-average molecules to pass from one side to the other, causing a minimize in temperature in one part and an boost in temperature in the other, in accordance with the second law of thermodynamics.",C,"""Which-way"" experiments and the principle of complementarity 
+A well-known thought experiment predicts that if particle detectors are positioned at the slits, showing through which slit a photon goes, the interference pattern will disappear. This which-way experiment illustrates the complementarity principle that photons can behave as either particles or waves, but cannot be observed as both at the same time.
+Despite the importance of this thought experiment in the history of quantum mechanics (for example, see the discussion on Einstein's version of this experiment), technically feasible realizations of this experiment were not proposed until the 1970s. (Naive implementations of the textbook thought experiment are not possible because photons cannot be detected without absorbing the photon.) Currently, multiple experiments have been performed illustrating various aspects of complementarity.
+
+Interpretations of the experiment 
+Like the Schrödinger's cat thought experiment, the double-slit experiment is often used to highlight the differences and similarities between the various interpretations of quantum mechanics.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.",0.625,local,which of the following is correct? what is the maxwell's demon thought experiment?,4207705306
+1973,Identify the correct statement: What does Earnshaw's theorem state? from the following choices.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,No match found.,0.0,live_api,identify the correct statement: what does earnshaw's theorem state? from the following choices.,309606510
+1974,Determine the correct option: What is reciprocal length or inverse length? carefully.,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.5,local,determine the correct option: what is reciprocal length or inverse length? carefully.,3381013036
+1975,Choose the correct answer: What is a regular polytope?,A regular polytope is a geometric shape whose symmetry group is transitive on its diagonals.,A regular polytope is a geometric shape whose symmetry group is transitive on its vertices.,A regular polytope is a geometric shape whose symmetry group is transitive on its flags.,A regular polytope is a geometric shape whose symmetry group is transitive on its edges.,A regular polytope is a geometric shape whose symmetry group is transitive on its faces.,C,"Other dimensions
+A generalized -dimensional ""bipyramid"" is any -polytope constructed from an -polytope base lying in a hyperplane, with every base vertex connected by an edge to two apex vertices. If the -polytope is a regular polytope and the apices are equidistant from its center along the line perpendicular to the base hyperplane, it will have identical pyramidal facets.
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+The cube is a Hanner polytope, because it can be constructed by using the Cartesian product of three line segments. Its dual polyhedron, the regular octahedron, is constructed by the direct sum of three line segments.",0.8,local,choose the correct answer: what is a regular polytope?,2157225686
+1976,Which of the following is correct? What is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam?,The three moment theorem expresses the relation between the deflection of two points on a beam relative to the point of intersection between tangent at those two points and the vertical through the first point.,"The three moment theorem is used to calculate the maximum allowable bending moment of a beam, which is determined by the weight distribution of each segment of the beam.","The three moment theorem describes the relationship between bending moments at three successive supports of a continuous beam, subject to a loading on two adjacent spans with or without settlement of the supports.","The three moment theorem is used to calculate the weight distribution of each segment of a beam, which is required to apply Mohr's theorem.","The three moment theorem is used to derive the change in slope of a deflection curve between two points of a beam, which is equal to the area of the M/EI diagram between those two points.",C,"The measured value of the deuterium magnetic dipole moment, is , which is 97.5% of the  value obtained by simply adding moments of the proton and neutron. This suggests that the state of the deuterium is indeed to a good approximation ,  state, which occurs with both nucleons spinning in the same direction, but their magnetic moments subtracting because of the neutron's negative moment.
+
+The following example deals with a beam of light scattering off a circle with radius  and a perfectly reflecting boundary. The beam consists of a uniform density of parallel rays, and the beam-circle interaction is modeled within the framework of geometric optics. Because the problem is genuinely two-dimensional, the cross section has unit of length (e.g., metre). Let  be the angle between the light ray and the radius joining the reflection point of the ray with the center point of the mirror. Then the increase of the length element perpendicular to the beam is
+
+Consider the case of an observer and a light source moving relative to each other at constant velocity, with a light beam moving from the source to the observer. At the moment of emission, the beam in the observer's rest frame is tilted compared to the one in the source's rest frame, as understood through relativistic beaming. During the time it takes the light beam to reach the observer the light source moves in the observer's frame, and the 'true position' of the light source is displaced relative to the apparent position the observer sees, as explained by light-time correction. Finally, the beam in the observer's frame at the moment of observation is tilted compared to the beam in source's frame, which can be understood as an aberrational effect. Thus, a person in the light source's frame would describe the apparent tilting of the beam in terms of aberration, while a person in the observer's frame would describe it as a light-time effect.",0.42857142857142855,local,which of the following is correct? what is the relation between the three moment theorem and the bending moments at three successive supports of a continuous beam?,3359224427
+1977,Choose the correct answer: What is the Landau-Lifshitz-Gilbert equation used for in physics? from the following choices.,"The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in astrophysics to model the effects of a magnetic field on celestial bodies.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in micromagnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a solid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.","The Landau-Lifshitz-Gilbert equation is a differential equation used to describe the precessional motion of magnetization M in a liquid, and is commonly used in macro-magnetics to model the effects of a magnetic field on ferromagnetic materials.",C,"John Paul Wild (17 May 1923 – 10 May 2008) was a British-born Australian scientist. Following service in World War II as a radar officer in the Royal Navy, he became a radio astronomer in Australia for the Council for Scientific and Industrial Research, the fore-runner of the CSIRO. In the 1950s and 1960s he made discoveries based on radio observations of the Sun. In the late 1960s and early 1970s his team built and operated the world's first solar radio-spectrographs and subsequently the Culgoora radio-heliograph, near Narrabri, New South Wales. The Paul Wild Observatory at Culgoora is named after him.
+In 1972 Paul Wild invented Interscan, a standard microwave landing system. From 1978 to 1985 he was chairman of CSIRO, during which time he expanded the organisation's scope and directed its restructuring. He retired from CSIRO to lead (from 1986) the Very Fast Train Joint Venture, a private sector project that sought to build a high-speed railway between Australia's two most populous c",0.09090909090909091,live_api,choose the correct answer: what is the landau-lifshitz-gilbert equation used for in physics? from the following choices.,1791013469
+1978,Choose the correct answer: What is the significance of the change in slope of the pinched hysteresis curves in ReRAM and other forms of two-terminal resistance memory?,"The change in slope of the pinched hysteresis curves demonstrates switching between different resistance states, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a Type-II non-crossing curve, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves demonstrates the presence of a memristive network, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.","The change in slope of the pinched hysteresis curves indicates the presence of a linear resistor, which is a phenomenon central to ReRAM and other forms of two-terminal resistance memory.",A,"The ratio in the definition of the derivative is the slope of the line through two points on the graph of the function , specifically the points  and . As  is made smaller, these points grow closer together, and the slope of this line approaches the limiting value, the slope of the tangent to the graph of  at . In other words, the derivative is the slope of the tangent.
+
+This gives an exact value for the slope of a straight line. If the graph of the function is not a straight line, however, then the change in  divided by the change in  varies. Derivatives give an exact meaning to the notion of change in output concerning change in input. To be concrete, let  be a function, and fix a point  in the domain of .  is a point on the graph of the function. If  is a number close to zero, then  is a number close to . Therefore,  is close to . The slope between these two points is",0.25,local,choose the correct answer: what is the significance of the change in slope of the pinched hysteresis curves in reram and other forms of two-terminal resistance memory?,3858615716
+1979,"Which of the following is correct? What is the reason behind the designation of Class L dwarfs, and what is their color and composition? from the following choices.","Class L dwarfs are hotter than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright blue in color and are brightest in ultraviolet. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are hotter than M stars and are designated L because L is the next letter alphabetically after M. They are dark red in color and are brightest in infrared. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the next letter alphabetically after M. They are bright yellow in color and are brightest in visible light. Their atmosphere is hot enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.","Class L dwarfs are cooler than M stars and are designated L because L is the remaining letter alphabetically closest to M. They are bright green in color and are brightest in visible light. Their atmosphere is cool enough to allow metal hydrides and alkali metals to be prominent in their spectra. Some of these objects have masses small enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore brown dwarfs.",B,"Closure properties
+The class of context-free languages is closed under the following operations. That is, if L and P are context-free languages, the following languages are context-free as well:
+the union  of L and P
+the reversal of L
+the concatenation  of L and P
+the Kleene star  of L
+the image  of L under a homomorphism 
+the image  of L under an inverse homomorphism 
+the circular shift of L (the language )
+the prefix closure of L (the set of all prefixes of strings from L)
+the quotient L/R of L by a regular language R
+
+The following terms refer to the components or aspects of a classical western cannon (c. 1850) as illustrated here. In what follows, the words near, close, and behind will refer to those parts towards the thick, closed end of the piece, and far, front, in front of, and before to the thinner, open end.
+
+The concept of Design by Contract is central to Eiffel. The contracts assert what must be true before a routine is executed (precondition) and what must hold to be true after the routine finishes (post-condition). Class Invariant contracts define what assertions must hold true both before and after any feature of a class is accessed (both routines and attributes). Moreover, contracts codify into executable code developer and designers assumptions about the operating environment of the features of a class or the class as a whole by means of the invariant.",0.3076923076923077,local,"which of the following is correct? what is the reason behind the designation of class l dwarfs, and what is their color and composition? from the following choices.",1286046325
+1980,"Choose the correct answer: Which of the following statements accurately depicts the relationship between Gauss's law, electric flux, electric field, and symmetry in electric fields? from the following choices.","Gauss's law holds only for situations involving symmetric electric fields, like those with spherical or cylindrical symmetry, and doesn't apply to other field types. Electric flux, as an expression of the total electric field passing through a closed surface, is influenced only by charges within the surface and unaffected by distant charges located outside it. The scalar quantity electric flux is strictly measured in SI fundamental quantities as kg·m3·s−3·A.","Gauss's law holds in all cases, but it is most useful for calculations involving symmetric electric fields, like those with spherical or cylindrical symmetry, as they allow for simpler algebraic manipulations. Electric flux is not affected by distant charges outside the closed surface, whereas the net electric field, E, can be influenced by any charges positioned outside of the closed surface. In SI base units, the electric flux is expressed as kg·m3·s−3·A−1.","Gauss's law, which applies equally to all electric fields, is typically most useful when dealing with symmetric field configurations, like those with spherical or cylindrical symmetry, since it makes it easier to calculate the total electric flux. Electric flux, an expression of the total electric field through a closed surface, is unaffected by charges outside the surface, while net electric field, E, may be influenced by charges located outside the closed surface. Electric flux is expressed in SI base units as kg·m3·s−1·C.","Gauss's law only holds for electric fields with cylindrical symmetry, like those of a straight long wire; it is not applicable to fields with other types of symmetry. Electric flux, which measures the total electric field across a closed surface, is influenced by all charges within the surface as well as by those located outside it. The unit of electric flux in SI base units is kg·m2·s−2·A−1.","Gauss's law, which holds for all situations, is most beneficial when applied to electric fields that exhibit higher degrees of symmetry, like those with cylindrical and spherical symmetry. While electric flux is unaffected by charges outside of a given closed surface, the net electric field, E, may be affected by them. The unit of electric flux in SI base units is kg·m2·s−1·C.",B,"The way in which charges and currents (i.e. streams of charges) interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law. Maxwell's equations detail how the electric field converges towards or diverges away from electric charges, how the magnetic field curls around electrical currents, and how changes in the electric and magnetic fields influence each other. The Lorentz force law states that a charge subject to an electric field feels a force along the direction of the field, and a charge moving through a magnetic field feels a force that is perpendicular both to the magnetic field and to its direction of motion.
+
+An electromagnetic field (also EM field) is a physical field, varying in space and time, that represents the electric and magnetic influences generated by and acting upon electric charges. The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field. 
+Because of the interrelationship between the fields, a disturbance in the electric field can create a disturbance in the magnetic field which in turn affects the electric field, leading to an oscillation that propagates through space, known as an electromagnetic wave.
+
+James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves. Out of the four equations, two of the equations that Maxwell refined were Faraday's Law of Induction and Ampère's circuital law, which he extended by adding the displacement current term to the equations himself. Maxwell thought that the displacement current, which he viewed as the motion of bound charges, gave rise to the magnetic field. The other two equations are Gauss's law and Gauss's law for magnetism.",0.47368421052631576,local,"choose the correct answer: which of the following statements accurately depicts the relationship between gauss's law, electric flux, electric field, and symmetry in electric fields? from the following choices.",4169388260
+1981,Identify the correct statement: What is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or Copernican principles that can be used to address specific issues in the Lambda-CDM model and distinguish between current models and other possible models? based on the given context.,"The Copernican principle, which proposes that Earth, the Solar mechanism, and the Milky Way are not at the centre of the universe, but instead, the universe is expanding equally in all directions. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","Inhomogeneous cosmology, which states that the universe is entirely homogeneous and isotropic, directly proportional to the density of matter and radiation. This model proposes that everything in the universe is completely uniform, but it does not match observations.","Inhomogeneous cosmology, which models the universe as an extremely large, low-density void, instead of using the concept of dark energy. According to the model, this principle can match the observed accelerating universe and cosmological constant, but it contradicts the Copernican principle.","The cosmological principle, which proposes that Earth, the Solar framework, and the Milky Way are at the centre of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.","The principle of dark energy, which proposes that a new form of energy, not previously detected, is responsible for the acceleration of the expansion of the universe. This principle is a modification of the Lambda-CDM model and has been shown to explain several observational results.",C,"Physics without the principle
+The standard model of cosmology, the Lambda-CDM model, assumes the Copernican principle and the more general cosmological principle. Some cosmologists and theoretical physicists have created models without the cosmological or Copernican principles to constrain the values of observational results, to address specific known issues in the Lambda-CDM model, and to propose tests to distinguish between current models and other possible models.",0.6060606060606061,local,identify the correct statement: what is one of the examples of the models proposed by cosmologists and theoretical physicists without the cosmological or copernican principles that can be used to address specific issues in the lambda-cdm model and distinguish between current models and other possible models? based on the given context.,2690716522
+1982,Pick the best possible answer: What was Isaac Newton's explanation for rectilinear propagation of light? among the listed options.,"Isaac Newton rejected the wave concept of light and proposed that light consists of corpuscles that are subject to a force acting parallel to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton rejected the wave principle of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the near side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave principle of light and proposed that light consists of transverse waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.","Isaac Newton rejected the wave framework of light and proposed that light consists of corpuscles that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching corpuscle was just enough to reach the far side of the force field; at more oblique incidence, the corpuscle would be turned back.","Isaac Newton accepted the wave concept of light and proposed that light consists of longitudinal waves that are subject to a force acting perpendicular to the interface. In this model, the critical angle was the angle of incidence at which the normal velocity of the approaching wave was just enough to reach the far side of the force field; at more oblique incidence, the wave would be turned back.",D,No match found.,0.0,live_api,pick the best possible answer: what was isaac newton's explanation for rectilinear propagation of light? among the listed options.,2398711051
+1983,Pick the best possible answer: What is the function of mammary glands in mammals? based on the given context.,Mammary glands produce milk to feed the young.,Mammary glands help mammals draw air into the lungs.,Mammary glands help mammals breathe with lungs.,Mammary glands excrete nitrogenous waste as urea.,Mammary glands separate oxygenated and deoxygenated blood in the mammalian heart.,A,"Suckling 
+Like other placental mammals, cetaceans give birth to well-developed calves and nurse them with milk from their mammary glands. When suckling, the mother actively splashes milk into the mouth of the calf, using the muscles of her mammary glands, as the calf has no lips. This milk usually has a high-fat content, ranging from 16 to 46%, causing the calf to increase rapidly in size and weight.
+
+Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight. They mostly have four limbs, but some aquatic mammals have no limbs or limbs modified into fins, and the forelimbs of bats are modified into wings. The legs of most mammals are situated below the trunk, which is held well clear of the ground. The bones of mammals are well ossified and their teeth, which are usually differentiated, are coated in a layer of prismatic enamel. The teeth are shed once (milk teeth) during the animal's lifetime or not at all, as is the case in cetaceans. Mammals have three bones in the middle ear and a cochlea in the inner ear. They are clothed in hair and their skin contains glands which secrete sweat. Some of these glands are specialized as mammary glands, producing milk to feed the young. Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs. The mammalian heart has four chambers, and oxygenated and deoxygenated blood are kept entirely separate. Nitrogenous waste is excreted primarily as urea.
+
+The primary function of the breasts, as mammary glands, is the nourishing of an infant with breast milk. Milk is produced in milk-secreting cells in the alveoli. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple.",0.36363636363636365,local,pick the best possible answer: what is the function of mammary glands in mammals? based on the given context.,3174154881
+1984,Identify the correct statement: What is the role of methane in Fischer-Tropsch processes? carefully.,Methane is partially converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is used as a catalyst in Fischer-Tropsch processes.,Methane is not used in Fischer-Tropsch processes.,Methane is fully converted to carbon monoxide for utilization in Fischer-Tropsch processes.,Methane is a byproduct of Fischer-Tropsch processes.,A,No match found.,0.0,live_api,identify the correct statement: what is the role of methane in fischer-tropsch processes? carefully.,871347650
+1985,Identify the correct statement: What is geometric quantization in mathematical physics? from the following choices.,Geometric quantization is a mathematical approach to defining a classical principle corresponding to a given quantum principle. It attempts to carry out quantization in such a way that certain analogies between the quantum principle and the classical principle are lost.,Geometric quantization is a mathematical approach to defining a quantum principle corresponding to a given classical principle. It attempts to carry out quantization in such a way that certain analogies between the classical principle and the quantum principle are lost.,Geometric quantization is a mathematical approach to defining a classical framework corresponding to a given quantum framework. It attempts to carry out quantization in such a way that certain analogies between the quantum framework and the classical framework remain manifest.,Geometric quantization is a mathematical approach to defining a quantum principle corresponding to a given classical principle. It attempts to carry out quantization in such a way that certain analogies between the classical principle and the quantum principle are not significant.,Geometric quantization is a mathematical approach to defining a quantum concept corresponding to a given classical concept. It attempts to carry out quantization in such a way that certain analogies between the classical concept and the quantum concept remain manifest.,E,"The second law of thermodynamics is a physical law based on universal empirical observation concerning heat and energy interconversions. A simple statement of the law is that heat always flows spontaneously from hotter to colder regions of matter (or 'downhill' in terms of the temperature gradient). Another statement is: ""Not all heat can be converted into work in a cyclic process."" These are informal definitions, however; more formal definitions appear below.
+The second law of thermodynamics establishes the concept of entropy as a physical property of a thermodynamic system. It predicts whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics and provides necessary criteria for spontaneous processes. For example, the first law allows the process of a cup falling off a table and breaking on the floor, as well as allowing the reverse process of the cup fragments coming back together and 'jumping' back onto",0.1111111111111111,live_api,identify the correct statement: what is geometric quantization in mathematical physics? from the following choices.,1715979126
+1986,What is the identity operation in symmetry groups?,The identity operation leaves the molecule unchanged and forms the identity element in the symmetry group.,The identity operation rotates the molecule about its center of mass.,The identity operation inverts the molecule about its center of inversion.,The identity operation reflects the molecule across a plane of symmetry.,The identity operation translates the molecule in 3-D space.,A,"On the set of natural numbers , the binary operation exponentiation, , is not commutative since,  (cf. Equation xy = yx), and is also not associative since .  For instance, with , , and , , but .  By changing the set  to the set of integers , this binary operation becomes a partial binary operation since it is now undefined when  and  is any negative integer.  For either set, this operation has a right identity (which is ) since  for all  in the set, which is not an identity (two sided identity) since  in general.
+
+Examples 
+ For the integers and the operation addition , denoted , the operation + combines any two integers to form a third integer, addition is associative, zero is the additive identity, every integer  has an additive inverse, , and the addition operation is commutative since  for any two integers  and .
+ Every cyclic group  is abelian, because if ,  are in , then . Thus the integers, , form an abelian group under addition, as do the integers modulo , .
+ Every ring is an abelian group with respect to its addition operation. In a commutative ring the invertible elements, or units, form an abelian multiplicative group. In particular, the real numbers are an abelian group under addition, and the nonzero real numbers are an abelian group under multiplication.
+ Every subgroup of an abelian group is normal, so each subgroup gives rise to a quotient group. Subgroups, quotients, and direct sums of abelian groups are again abelian. The finite simple abelian groups are exactly the cyclic groups of prime order.Rose 2012, p. 32.
+ The concepts of abelian group and -module agree. More specifically, every -module is an abelian group with its operation of addition, and every abelian group is a module over the ring of integers  in a unique way.
+
+The symmetry group of a right -antiprism is  of order  known as an antiprismatic symmetry, because it could be obtained by rotation of the bottom half of a prism by  in relation to the top half. A concave polyhedron created in this way would have this symmetry group, hence prefix ""anti"" before ""prismatic"". There are two exceptions having groups different than :
+: the regular tetrahedron, which has the larger symmetry group  of order , which has three versions of  as subgroups;
+: the regular octahedron, which has the larger symmetry group  of order , which has four versions of  as subgroups.
+If a right 2- or 3-antiprism is not uniform, then its symmetry group is  or  as usual.
+The symmetry group contains inversion if and only if  is odd.",1.0,local,what is the identity operation in symmetry groups?,2973973413
+1987,Choose the correct answer: What is classical mechanics? from the following choices.,"Classical mechanics is the branch of physics that describes the motion of macroscopic objects using concepts such as mass, acceleration, and force. It is based on a three-dimensional Euclidean space with fixed axes, and utilises many equations and mathematical concepts to relate physical quantities to one another.","Classical mechanics is the branch of physics that describes the motion of microscopic objects using concepts such as energy, momentum, and wave-particle duality. It is based on a four-dimensional space-time continuum and utilises many equations and mathematical concepts to relate physical quantities to one another.",Classical mechanics is the branch of physics that studies the behaviour of subatomic particles such as electrons and protons. It is based on the principles of quantum mechanics and utilises many equations and mathematical concepts to describe the properties of these particles.,Classical mechanics is the branch of physics that studies the behaviour of light and electromagnetic radiation. It is based on the principles of wave-particle duality and utilises many equations and mathematical concepts to describe the properties of light.,Classical mechanics is the branch of physics that studies the behaviour of fluids and gases. It is based on the principles of thermodynamics and utilises many equations and mathematical concepts to describe the properties of these substances.,A,"Furthermore, it has been shown that the definitions of entropy in statistical mechanics is the only entropy that is equivalent to the classical thermodynamics entropy under the following postulates:
+
+(A more common way of showing that the person asking the question is correct is by simply saying ""right"" or ""correct"",  ; the corresponding negative answer is   .)
+
+Books 
+ Bell, John S. (1987). Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press. .
+ Fine, Arthur (1996). The Shaky Game: Einstein, Realism and the Quantum Theory. 2nd ed. Univ. of Chicago Press.
+ Gribbin, John (1984). In Search of Schrödinger's Cat. Black Swan. 
+ Lederman, Leon; Teresi, Dick (1993). The God Particle: If the Universe Is the Answer, What Is the Question? Houghton Mifflin Company, pp. 21, 187–189.
+ Selleri, Franco (1988). Quantum Mechanics Versus Local Realism: The Einstein–Podolsky–Rosen Paradox. New York: Plenum Press. .",0.7142857142857143,local,choose the correct answer: what is classical mechanics? from the following choices.,1373177891
+1988,Pick the best possible answer: What is the application of Memristor? from the following choices.,"Memristor has applications in the production of electric cars, airplanes, and ships.","Memristor has applications in the production of food, clothing, and shelter.","Memristor has applications in the production of solar panels, wind turbines, and hydroelectric power plants.","Memristor has applications in programmable logic signal processing, Super-resolution imaging, physical neural networks, control mechanisms, reconfigurable computing, in-memory computing, brain–computer interfaces and RFID.","Memristor has applications in optical fiber communication, satellite communication, and wireless communication.",D,"Non-deterministic computation
+In a non-deterministic model of computation, such as non-deterministic Turing machines, some choices may be made at some steps of the computation. In complexity theory, one considers all possible choices simultaneously, and the non-deterministic time complexity is the time needed, when the best choices are always made. In other words, one considers that the computation is done simultaneously on as many (identical) processors as needed, and the non-deterministic computation time is the time spent by the first processor that finishes the computation. This parallelism is partly amenable to quantum computing via superposed entangled states in running specific quantum algorithms, like e.g. Shor's algorithm for finding the prime factors of an integer.",0.375,local,pick the best possible answer: what is the application of memristor? from the following choices.,2911696678
+1989,Pick the best possible answer: What is bollard pull primarily used for measuring?,The weight of heavy machinery,The speed of locomotives,The distance traveled by a truck,The strength of tugboats,The height of a ballast tractor,D,"This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: ""sailor"", from naus: ""ship"".
+Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article. Terms used in other fields associated with bodies of water can be found at Glossary of fishery terms, Glossary of underwater diving terminology, Glossary of rowing terms, and Glossary of meteorology.",0.1111111111111111,live_api,pick the best possible answer: what is bollard pull primarily used for measuring?,797418025
+1990,Select the most accurate option: What is reciprocal length or inverse length?,"Reciprocal length or inverse length is a quantity or measurement used in physics and chemistry. It is the reciprocal of time, and common units used for this measurement include the reciprocal second or inverse second (symbol: s−1), the reciprocal minute or inverse minute (symbol: min−1).","Reciprocal length or inverse length is a quantity or measurement used in geography and geology. It is the reciprocal of area, and common units used for this measurement include the reciprocal square metre or inverse square metre (symbol: m−2), the reciprocal square kilometre or inverse square kilometre (symbol: km−2).","Reciprocal length or inverse length is a quantity or measurement used in biology and medicine. It is the reciprocal of mass, and common units used for this measurement include the reciprocal gram or inverse gram (symbol: g−1), the reciprocal kilogram or inverse kilogram (symbol: kg−1).","Reciprocal length or inverse length is a quantity or measurement used in economics and finance. It is the reciprocal of interest rate, and common units used for this measurement include the reciprocal percent or inverse percent (symbol: %−1), the reciprocal basis point or inverse basis point (symbol: bp−1).","Reciprocal length or inverse length is a quantity or measurement used in several branches of science and mathematics. It is the reciprocal of length, and common units used for this measurement include the reciprocal metre or inverse metre (symbol: m−1), the reciprocal centimetre or inverse centimetre (symbol: cm−1).",E,"The dimensions that can be formed from a given collection of basic physical dimensions, such as T, L, and M, form an abelian group: The identity is written as 1; , and the inverse of L is 1/L or L−1. L raised to any integer power  is a member of the group, having an inverse of L or 1/L.  The operation of the group is multiplication, having the usual rules for handling exponents (). Physically, 1/L can be interpreted as reciprocal length, and 1/T as reciprocal time (see reciprocal second).",0.5,local,select the most accurate option: what is reciprocal length or inverse length?,2387657430
+1991,Pick the best possible answer: What is the Erlangen program? from the following choices.,"The Erlangen program is a approach of characterizing geometries based on statistics and probability, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on group framework and projective geometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on algebra and trigonometry, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a approach of characterizing geometries based on geometry and topology, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.","The Erlangen program is a procedure of characterizing geometries based on calculus and differential equations, published by Felix Klein in 1872 as Vergleichende Betrachtungen über neuere geometrische Forschungen.",B,"Two different approaches have been used. Felix Klein suggested to define geometries through their symmetries. The presentation of Euclidean spaces given in this article, is essentially issued from his Erlangen program, with the emphasis given on the groups of translations and isometries.",0.25,local,pick the best possible answer: what is the erlangen program? from the following choices.,2579381296
+1992,Which of the following is correct? What is a trophic level in an ecological pyramid? from the following choices.,A group of organisms that acquire most of their energy from the level above them in the pyramid.,A group of organisms that acquire most of their energy from the abiotic sources in the ecostructure.,A group of organisms that acquire most of their energy from the level below them in the pyramid.,A group of organisms that acquire most of their energy from the same level in the pyramid.,A group of organisms that do not acquire any energy from the ecoframework.,C,"A trophic level (from Greek troph, τροφή, trophē, meaning ""food"" or ""feeding"") is ""a group of organisms acquiring a considerable majority of its energy from the lower adjacent level (according to ecological pyramids) nearer the abiotic source."" Links in food webs primarily connect feeding relations or trophism among species. Biodiversity within ecosystems can be organized into trophic pyramids, in which the vertical dimension represents feeding relations that become further removed from the base of the food chain up toward top predators, and the horizontal dimension represents the abundance or biomass at each level. When the relative abundance or biomass of each species is sorted into its respective trophic level, they naturally sort into a 'pyramid of numbers'.
+
+Trophic levels are part of the holistic or complex systems view of ecosystems. Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. While the notion of trophic levels provides insight into energy flow and top-down control within food webs, it is troubled by the prevalence of omnivory in real ecosystems. This has led some ecologists to ""reiterate that the notion that species clearly aggregate into discrete, homogeneous trophic levels is fiction."" Nonetheless, recent studies have shown that real trophic levels do exist, but ""above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores.""
+
+A keystone species is a species that is connected to a disproportionately large number of other species in the food-web. Keystone species have lower levels of biomass in the trophic pyramid relative to the importance of their role. The many connections that a keystone species holds means that it maintains the organization and structure of entire communities. The loss of a keystone species results in a range of dramatic cascading effects (termed trophic cascades) that alters trophic dynamics, other food web connections, and can cause the extinction of other species. The term keystone species was coined by Robert Paine in 1969 and is a reference to the keystone architectural feature as the removal of a keystone species can result in a community collapse just as the removal of the keystone in an arch can result in the arch's loss of stability.
+Sea otters (Enhydra lutris) are commonly cited as an example because they limit the density of sea urchins that feed on kelp. If sea otters are removed from the system, the urchins graze until the kelp beds disappear, and this has a dramatic effect on community structure.",0.625,local,which of the following is correct? what is a trophic level in an ecological pyramid? from the following choices.,1984340877
+1993,Identify the correct statement: What is the second law of thermodynamics? based on the given context.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that heat always moves from colder objects to hotter objects unless energy in some form is supplied to reverse the direction of heat flow.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that the internal energy of a thermodynamic framework is a physical property that can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes that all heat energy can be converted into work in a cyclic process.,"The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It states that the entropy of isolated frameworks left to spontaneous evolution can minimize, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.",The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. It establishes the concept of entropy as a physical property of a thermodynamic mechanism and can be used to predict whether processes are forbidden despite obeying the requirement of conservation of energy as expressed in the first law of thermodynamics.,E,"For the foundations of thermodynamics, the conceptual importance of this was emphasized by Bryan, by Carathéodory, and by Born. The reason is that calorimetry presupposes a type of temperature as already defined before the statement of the first law of thermodynamics, such as one based on empirical scales. Such a presupposition involves making the distinction between empirical temperature and absolute temperature. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis.
+
+Clausius–Duhem inequality
+The Clausius–Duhem inequality can be used to express the second law of thermodynamics for elastic-plastic materials.  This inequality is a statement concerning the irreversibility of natural processes, especially when energy dissipation is involved.
+
+The structure of chemical thermodynamics is based on the first two laws of thermodynamics.  Starting from the first and second laws of thermodynamics, four equations called the ""fundamental equations of Gibbs"" can be derived.  From these four, a multitude of equations, relating the thermodynamic properties of the thermodynamic system can be derived using relatively simple mathematics.  This outlines the mathematical framework of chemical thermodynamics.",0.5555555555555556,local,identify the correct statement: what is the second law of thermodynamics? based on the given context.,3853014259
+1994,Select the most accurate option: What is the Josephson effect? carefully.,"The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = h/(2e), where h is the magnetic constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum Φ0 = e/(2h), where h is the Planck constant.","The Josephson effect is a phenomenon exploited by magnetic devices such as SQUIDs. It is used in the most accurate available measurements of the electric flux quantum Φ0 = h/(2e), where h is the magnetic constant.",A,"This definition of the ampere was most accurately realised using a Kibble balance, but in practice the unit was maintained via Ohm's law from the units of electromotive force and resistance, the volt and the ohm, since the latter two could be tied to physical phenomena that are relatively easy to reproduce, the Josephson effect and the quantum Hall effect, respectively.",0.42857142857142855,local,select the most accurate option: what is the josephson effect? carefully.,4230319684
+1995,Select the most accurate option: What is the Kutta condition? among the listed options.,"The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the trailing edge of the airfoil.","The Kutta condition is a physical requirement that the fluid moving along the lower and upper surfaces of an airfoil meet smoothly, with no fluid moving around the leading edge of the airfoil.",The Kutta condition is a mathematical requirement that the loop used in applying the Kutta-Joukowski theorem must be chosen outside the boundary layer of the airfoil.,The Kutta condition is a mathematical requirement that the flow can be assumed inviscid in the entire region outside the airfoil provided the Reynolds number is large and the angle of attack is small.,The Kutta condition is a physical requirement that the circulation calculated using the loop corresponding to the surface of the airfoil must be zero for a viscous fluid.,A,No match found.,0.0,live_api,select the most accurate option: what is the kutta condition? among the listed options.,2097911084
+1996,What is the piezoelectric strain coefficient for AT-cut quartz crystals?,d = 1.9·10‑12 m/V,d = 3.1·10‑12 m/V,d = 4.2·10‑12 m/V,d = 2.5·10‑12 m/V,d = 5.8·10‑12 m/V,B,"A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers. The most common type of piezoelectric resonator used is a quartz crystal, so oscillator circuits incorporating them became known as crystal oscillators. However, other piezoelectric materials including polycrystalline ceramics are used in similar circuits.
+A crystal oscillator relies on the slight change in shape of a quartz crystal under an electric field, a property known as inverse piezoelectricity. A voltage applied to the electrodes on the crystal causes it to change shape; when the voltage is removed, the crystal generates a small voltage as it elastically returns to its original shape. The quartz oscillates at a stable resonant frequency",0.3333333333333333,local,what is the piezoelectric strain coefficient for at-cut quartz crystals?,1238292863
+1997,Identify the correct statement: What is the synapstor or synapse transistor? based on the given context.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term depression for learning and inactivity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows short-term potentiation for learning and activity-based forgetting.,A device used to demonstrate a neuro-inspired circuit that shows long-term potentiation for learning and inactivity-based forgetting.,E,"Ambiguity is a state in which the meaning of a phrase, statement, situation, or resolution is not explicitly defined, making for several plausible interpretations. It arises when available information lacks sufficient context or a shared frame, so people cannot reliably determine what the problem is, what matters, what causes what, or what solution would count as correct. As a result, interpretation depends heavily on prior experience, assumptions, and imagination.
+
+Statement
+The theorem has several formulations, depending on the context in which it is used and its degree of generalization. The simplest is sometimes given as follows:
+
+Another potential way to define the word ""head"", and hence the relationship between husband and wife as found in the Bible, is through the example given in the surrounding context in which the word is found. In that context the husband and wife are compared to Christ and his church. The context seems to imply an authority structure based on a man sacrificing himself for his wife, as Christ did for the church; a love-based authority structure, where submission is not required but freely given based on the care given to the wife.Wickstrom, Mark. The Gospel of Grace. Beaver Pond Press, 2008.",0.6,local,identify the correct statement: what is the synapstor or synapse transistor? based on the given context.,3663370191
+1998,Determine the correct option: What does Earnshaw's theorem state? from the following choices.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the gravitational interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,"A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges, if the magnets are hard.",A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges.,A collection of point charges can be maintained in a stable stationary equilibrium configuration solely by the magnetic interaction of the charges.,D,"This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical). The term paradox is often used to describe a counter-intuitive result.
+However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning. These paradoxes, often called antinomy, point out genuine problems in our understanding of the ideas of truth and description.",0.0,live_api,determine the correct option: what does earnshaw's theorem state? from the following choices.,3970779321
+1999,Identify the correct statement: What is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? from the following choices.,The atmosphere is a mechanism that is only influenced by large-scale processes and does not exhibit any small-scale feedback.,"The atmosphere possesses both chaos and order, including emerging organized mechanisms and time-varying forcing from recurrent seasons.",The atmosphere is a structure that is only influenced by small-scale processes and does not exhibit any large-scale modulation.,The atmosphere is a completely chaotic mechanism with no order or organization.,The atmosphere is a completely ordered structure with no chaos or randomness.,B,No match found.,0.0,live_api,identify the correct statement: what is the revised view of the atmosphere's nature based on the time-varying multistability that is associated with the modulation of large-scale processes and aggregated feedback of small-scale processes? from the following choices.,2554677561
+2000,Pick the best possible answer: Which of the following statements accurately describes the characteristics of gravitational waves? carefully.,"Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.","Gravitational waves have an amplitude denoted by λ, which represents the distance between points of maximum stretch or squeeze. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by f, which is the frequency of the wave's oscillation.","Gravitational waves have an amplitude denoted by h, which represents the size of the wave. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by f, which is the frequency of the wave's oscillation, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Einstein's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of maximum stretch or squeeze.","Gravitational waves have an amplitude denoted by f, which represents the frequency of the wave's oscillation. The amplitude varies with time according to Newton's quadrupole formula. Gravitational waves also have a frequency denoted by h, which is the size of the wave, and a wavelength denoted by λ, which is the distance between points of minimum stretch or squeeze.",C,"Gravitational waves 
+In 1916, Einstein predicted gravitational waves,Einstein (1916).Einstein (1918). ripples in the curvature of spacetime which propagate as waves, traveling outward from the source, transporting energy as gravitational radiation. The existence of gravitational waves is possible under general relativity due to its Lorentz invariance which brings the concept of a finite speed of propagation of the physical interactions of gravity with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that the physical interactions of gravity propagate at infinite speed.
+
+For waves propagating in vacuum, as is possible for electromagnetic waves or gravitational waves, only the relative velocity between the observer and the source needs to be considered. For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source are relative to the medium in which the waves are transmitted. The total Doppler effect in such cases may therefore result from motion of the source, motion of the observer, motion of the medium, or any combination thereof.
+
+Gravitational waves
+Gravitational waves are ripples in the curvature of spacetime that propagate as waves at the speed of light, generated in certain gravitational interactions that propagate outward from their source. Gravitational-wave astronomy is an emerging branch of observational astronomy which aims to use gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs, neutron stars, and black holes; and events such as supernovae, and the formation of the early universe shortly after the Big Bang.",0.3076923076923077,local,pick the best possible answer: which of the following statements accurately describes the characteristics of gravitational waves? carefully.,3313397651