EP PHYSICS F/SCI.+ENGR.W/MOD..-MOD MAST
4th Edition
ISBN: 9780133899634
Author: GIANCOLI
Publisher: PEARSON CO
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Chapter 42, Problem 30P
To determine
The initial mass of
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Chapter 42 Solutions
EP PHYSICS F/SCI.+ENGR.W/MOD..-MOD MAST
Ch. 42.1 - Prob. 1AECh. 42.3 - Prob. 1BECh. 42.4 - Return to the first Chapter-Opening Question, page...Ch. 42.4 - Prob. 1DECh. 42.6 - Prob. 1EECh. 42 - Prob. 1QCh. 42 - Prob. 2QCh. 42 - Prob. 3QCh. 42 - Why are neutrons such good projectiles for...Ch. 42 - Prob. 5Q
Ch. 42 - Prob. 6QCh. 42 - Prob. 7QCh. 42 - Prob. 8QCh. 42 - Prob. 9QCh. 42 - Prob. 10QCh. 42 - Prob. 11QCh. 42 - Why would a porous block of uranium be more likely...Ch. 42 - Prob. 13QCh. 42 - Prob. 14QCh. 42 - Prob. 15QCh. 42 - Prob. 16QCh. 42 - Prob. 17QCh. 42 - Prob. 18QCh. 42 - Prob. 19QCh. 42 - Prob. 20QCh. 42 - Prob. 21QCh. 42 - Prob. 22QCh. 42 - Prob. 23QCh. 42 - Prob. 24QCh. 42 - Prob. 25QCh. 42 - How might radioactive tracers be used to find a...Ch. 42 - Prob. 1PCh. 42 - Prob. 2PCh. 42 - Prob. 3PCh. 42 - Prob. 4PCh. 42 - Prob. 5PCh. 42 - Prob. 6PCh. 42 - Prob. 7PCh. 42 - Prob. 8PCh. 42 - Prob. 9PCh. 42 - Prob. 10PCh. 42 - Prob. 11PCh. 42 - Prob. 12PCh. 42 - Prob. 13PCh. 42 - Prob. 14PCh. 42 - Prob. 15PCh. 42 - Prob. 16PCh. 42 - Prob. 17PCh. 42 - Prob. 18PCh. 42 - (I) What is the effective cross section for the...Ch. 42 - Prob. 20PCh. 42 - Prob. 21PCh. 42 - Prob. 22PCh. 42 - Prob. 23PCh. 42 - Prob. 24PCh. 42 - Prob. 25PCh. 42 - Prob. 26PCh. 42 - Prob. 27PCh. 42 - Prob. 28PCh. 42 - Prob. 29PCh. 42 - Prob. 30PCh. 42 - Prob. 31PCh. 42 - Prob. 32PCh. 42 - Prob. 33PCh. 42 - Prob. 34PCh. 42 - Prob. 35PCh. 42 - Prob. 36PCh. 42 - Prob. 37PCh. 42 - Prob. 38PCh. 42 - Prob. 39PCh. 42 - Prob. 40PCh. 42 - Prob. 41PCh. 42 - Prob. 42PCh. 42 - Prob. 43PCh. 42 - Prob. 44PCh. 42 - Prob. 45PCh. 42 - Prob. 46PCh. 42 - Prob. 47PCh. 42 - Prob. 48PCh. 42 - Prob. 49PCh. 42 - Prob. 50PCh. 42 - Prob. 51PCh. 42 - Prob. 52PCh. 42 - Prob. 53PCh. 42 - Prob. 54PCh. 42 - Prob. 55PCh. 42 - Prob. 56PCh. 42 - Prob. 57PCh. 42 - Prob. 58PCh. 42 - Prob. 59PCh. 42 - Prob. 60PCh. 42 - Prob. 61PCh. 42 - Prob. 62PCh. 42 - Prob. 63PCh. 42 - Prob. 64PCh. 42 - Prob. 65GPCh. 42 - Prob. 66GPCh. 42 - Prob. 67GPCh. 42 - Prob. 68GPCh. 42 - Prob. 69GPCh. 42 - Prob. 70GPCh. 42 - Prob. 71GPCh. 42 - Prob. 72GPCh. 42 - Prob. 73GPCh. 42 - Prob. 74GPCh. 42 - Prob. 75GPCh. 42 - Prob. 76GPCh. 42 - Prob. 77GPCh. 42 - Prob. 78GPCh. 42 - Prob. 79GPCh. 42 - Prob. 80GPCh. 42 - Prob. 81GPCh. 42 - Prob. 82GPCh. 42 - Prob. 83GPCh. 42 - Prob. 84GPCh. 42 - Prob. 85GPCh. 42 - Prob. 86GPCh. 42 - Prob. 87GPCh. 42 - Prob. 88GP
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- The cure of a nuclear reactor generates a large amount of thermal energy from the decay of fission products, even when the power-producing fission chain reaction is turned off. Would this residual heat be greatest after the reactor has run for a long time or short time? What if the reactor has been shut down for months?arrow_forwardIt is estimated that the total explosive yield of all the nuclear bombs in existence currently is about 4.000 MT. (a) Convert this amount of energy to kilowatthours, noting that 1kWh=3.60106J. (b) What would the monetary value of this energy be if it could be converted to electricity costing 10 cents per kW.h?arrow_forwardIf 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?arrow_forward
- (a) Estimate the years that the deuterium fuel in the oceans could supply the energy needs of the world. Assume world energy consumption to be ten times that of the United States which is 8×1019 J/y and that the deuterium in the oceans could be converted to energy with an efficiency of 32%. You must estimate or look up the amount of water in the oceans and take the deuterium content to be 0.015% of natural hydrogen to find the mass of deuterium available. Note that approximate energy yield of deuterium is 3.37×1014 J/kg. (b) Comment on how much time this is by any human measure. (It is not an unreasonable result, only an impressive one.)arrow_forward(I) In order to initiate a fusion reaction, deuterons (of mass 2 u) must have a temperature of about 10° K. At this tem- perature what is (a) the average kinetic energy, and (b) the rms speed?arrow_forward33. The core of a thermal reactor consists of a sphere, 50cm in radius, that contains a homogeneous mixture of 25°U and ordinary H,O. This core is surrounded by infinite thick H2O reflector. (a) What is the reflector savings ? (b) What is the critical mass? (c) If the maximum thermal flux is 1 x 1013 neutrons/cm2-sec, at what power is the reactor operating? [ Hint: compute the M2 for core assuming the reactor is bare and of radius 50 cm. Use this value of M to estimate & and then compute new M assuming reactor is bare and of radius 50 + 6. Interate until convergence is obtained.]arrow_forward
- (a) What is the function of the moderator in a nuclear reactor?(b) What substance acts as the moderator in a pressurizedwater generator? (c) What other substances are used asa moderator in nuclear reactor designs?arrow_forward10. A nuclear reactor is 35% efficient and has a power output of 350 MW. If we consider all the fission reactions to give out the same energy, 2.78 x 1011 J how many moles of uranium-235 is needed each second by the power station? AA 5.975 x 105 B 5.935 x 105 C 5.835 x 105 D 5.739 x 105arrow_forwardAssuming that the energy released per fission of 335 U is 200 MeV, calculate the number of fission processes that should occur per second in a nuclear reactor to operate at a power level of 20,000 kW. What is the corresponding rate of consumption of 235 U. 92 [University of London 1959]arrow_forward
- An all-electric home uses approximately 2 000 kWh of electric energy per month. How much uranium-235 would be required to provide this house with its energy needs for one year? Assume 100% conversion efficiency and 208 MeV released per fissionarrow_forwardAn all - electric home uses approximately 2.00 x 103 kWh of electric energy per month. How much uranium -235 would be required to provide this house with its energy needs for one year? Assume 100% conversion efficiency and 208 MeV released per fission.arrow_forwardDo all short (I) What type of reaction is taking place in a nuclear reactor? (II) What is the average energy released per reaction in a reactor? (III) Why are the reaction products radioactive? (IV) What is the necessity of a moderator in a nuclear reactor? Are light or heavy elements preferred for moderators and why?arrow_forward
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