A nucler reactor delivers a power of `10^(9)` W. What is the amount of fuel consumed by the reactor in one hour?

Options

A. 0.04 g
B. 0.08 g
C. 0.72 g
D. 0.96 g

Answer

A

Explanation

`p=E/t = (mc^(2))/t`
`therefore m = (pt)/c^(2) = (10^(9) xx 60 xx 60)/(3 xx 10^(8))^(2) = (36 xx 10^(11))/(9 xx 10^(16))`
`=(4 xx 10^(-5)) kg = 0.04 g`