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leviathanX777
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Homework Statement
A fission reactor produces 300 MW of electrical power with an efficiency of 30%. Calculate the mass of 235U consumed by the reactor in one day.
Homework Equations
Power = Energy/Time
E=mc^2
The Attempt at a Solution
Using the above equations I got an energy of 1.62 x 10^23 MeV. The corresponding mass found using the fact that 1 amu = 1.66 X 10^-27 Kg was 0.250 Kg. Is this right? I don't see how to bring the efficiency of 30% into this. Is it basically 30% of the energy that I calculated?