Physics, relativity 1

Physics
Tutor: None Selected Time limit: 1 Day

The power capacity of all nuclear power plants in the United States is 1.01 × 105 MW. In one hour, what is the total change in the mass of the nuclear fuel at these power plants due to the energy being taken from the reactors? Assume 100% efficiency.
Question 1 options:
Jul 10th, 2015

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in one hour, total energy = 3600*1.01*10^11 J = 3.64x10^14 J 

E = mc^2

m = 3.64x10^14/(9x10^16) = 4.044g  

answer is 2)

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Jul 10th, 2015

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