Fundamentals of Physics, Volume 1, Chapter 1-20
Fundamentals of Physics, Volume 1, Chapter 1-20
10th Edition
ISBN: 9781118233764
Author: David Halliday
Publisher: WILEY
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Chapter 43, Problem 11Q
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if in a nuclear power reactor with k = 1, control rods are used to reduce the power output of the reactor to 25% of its original value; will k be less than, equal to or greater than 1.

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It 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 kilowatt-hours, noting that . 1 kW .h = 3.60 x 106 J(b) What would the monetary value of this energy be if it could be converted to electricity costing 10 cents per kW·h?
A nuclear reactor is operating at a certain power level, with its multiplication factor k adjusted to unity. If the control rods are used to reduce the power output of the reactor to 25% of its former value, is the multiplication factor now a little less than unity, substantially less than unity, or still equal to unity?
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