A nuclear fusion reactor may one day be built that can power a city. Such a reactor would generate 109 W of power. How much matter would be converted to energy over a year of continuous operation?
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A nuclear fusion reactor may one day be built that can power a city. Such a reactor would generate 109 W of power. How much matter would be converted to energy over a year of continuous operation?
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- a) Explain what is meant by the term fusion when describing a nuclear reaction. b) Calculate the energy Q in MeV released in the reaction below by fusing two helium- 3 isotopes to form a helium-4 nucleus and two protons. He He He + 2H+Q The atomic masses of Hydrogen H and Helium He are, 1.007835 and 4.00260 u respectively, the mass of the Helium-3 isotope is 3.01605 u, and 1u is equivalent to 931 MeV.q9Harnessing a small fraction of the Sun's energy could provide 3 x 1013 W of energy worldwide. How many days would be required (assuming constant 24-hr energy harnessed with zero efficiency loss) to fulfill the total world's energy needs of 4x1020J?
- The intensity of radioactivity depends on the distance of the recipient from the source of radiation and follows an inverse square law. Suppose an object receives 1230 millirem of radiation when it is 10 meters from the source, calculate the distance if the object is now exposed to 350 millirem.A Sun-like star has a power output of 3.0·1026 W with 89.5% of this energy supplied by the proton-proton chain. How many protons are consumed per second in the core of this star?Consider an object of mass 22.2 kg. Assume that it s made up of equal numbers of protons, neutrons, and electrons. How many protons does this object contain?
- Large amounts of depleted uranium (238U ) are available as a by-product of uranium processing for reactor fuel and weapons. Uranium is very dense and makes good counter weights for aircraft. Suppose you have a 4000-kg block of 238U . How many calories per day are generated by thermalization of the decay energy?Question A7 Consider the fusion reaction Calculate the kinetic energy of 4He. 15NH 12C + 4 He.43. During a particular nuclear reaction, some mass is converted to energy. If the reactants in this process have 0.00562 u more mass than the products, calculate the energy of the products that comes from the reactants and characterize the reaction as endothermic or exothermic. A. 5.2 MeV, exothermic B. 5.2 MeV, endothermic C. 1.9 MeV, exothermic D. 1.9 MeV, endothermic
- If a reactor produces an average power of 1000 MW for a year, a. How much U-235 is used up assuming 200 MeV are released per fission and the efficiency is 33.3%? b. Also, how much mass is turned into energy?A nuclear fusion reactor such as ITER is expected to use the nuclear reaction, H + H → X +Y+ 17.59 ? Write this reaction with the correct symbols in place of the question marks.Uranium-235 is used as a nuclear fuel for Canadian made CANDU nuclear power plants. During one such fission reaction, a uranium-235 atom is split by a fast moving neutron to produce krypton-92, barium-141 and an unknown number of neutrons. Determine the number of neutrons produced by this reaction, record that value in blank #1. Determine the energy released by the reaction, rounded to the nearest whole MeV, record that in blank #2. Isotope Uranium-235 Krypton-92 Barium-141 Neutron Mass (u) 235.043930 91.92345 140.91440 1.008665