College Physics Study Set 7

Physics & Astronomy

Quiz 30 :

Nuclear Energy and Elementary Particles

Quiz 30 :

Nuclear Energy and Elementary Particles

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The average mass per nucleon is greatest in which of the following elements?
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A

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If a self-sustained controlled fusion reaction is to operate, a condition which must be met is that the fuel material be subjected to which of the following condition(s)?
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D

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A capture by a target nucleus of uranium-235 is most apt to occur for which type of "bullet" particle?
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D

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The water surrounding the fuel rods in a nuclear fission reactor serves what purpose(s)?
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Assume that (i) the energy released per fission event of 235U is 208 MeV, and (ii) 30% of the nuclear energy released in a power plant is ultimately converted to usable electrical energy.Approximately how many fission events will occur in one second in order to provide the one GW electrical power output of a typical power plant? (1 eV = 1.6 * 10-19 J)
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In a nuclear reactor which uses the fission process, which of the following is the most likely result in the event of a cooling system failure followed by a nuclear accident?
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In a fission reaction, a 235U nucleus captures a neutron.This results in the creation of the products 141Ba and 92Kr along with how many neutrons?
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A plasma can be contained in a "magnetic bottle" because it has which of the following properties?
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In a nuclear fission process involving the use of 239Pu fuel, if the approximate average binding energy per nucleon in the product fragments is 8.5 MeV while that of the fuel atom is 7.7 MeV, what approximate net energy is released per fission?
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In a fission reaction, a 235U nucleus captures a neutron.What energy is released if the products are 139I, 95Y and two neutrons? (atomic masses: 235U, 235.043 9; 139I, 138.935 0; 95Y, 94.913 4; neutron, 1.008 67; and 1 u = 931.5 MeV/c2)
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In order to be useful in sustaining a reaction, the neutrons in a fission reactor must be:
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When comparing product nuclei to reactant nuclei in an exothermal nuclear fusion process, which has the greater binding energy per nucleon?
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Nuclear fission was first observed by:
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The advantage of a fusion reactor when compared to a fission reactor is which of the following?
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When uranium fissions into two medium-mass nuclei, the product nuclei tend to have an excess of neutrons when compared to stable nuclei. What type of radioactive decay would one expect from these product nuclei?
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Calculate the energy (in kWh) given off if one kg of plutonium-239 undergoes complete fission.The energy released per fission is 200 MeV.(1 MeV = 1.6 * 10-13 J)
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Which of the following can only occur if the reproduction constant, K, exceeds 1?
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Which of the following will not influence the rate at which nuclear reactions will occur in a nuclear power plant where the fuel elements are a mixture of 235U and 238U?
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What characteristic is preferred in the elements contained in moderator materials when used in a nuclear fission reactor?
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The K-ratio in a uranium fuel reactor is defined as the average number of neutrons from each fission event that will cause another event.In a well-functioning reactor, it is desired that the K-ratio have what value?
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