Question

A nuclear reactor delivers a power of $10^{9}W$, the amount of fuel consumed by the reactor in one hour is

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

Answer 1

Answer: (C)

$P=\frac{E}{t}=\frac{m{v}^2}{t}\Rightarrow 10^9=\frac{m\times 9\times 10^{16}}{3600}$
$m=4\times 10^{-5}kg$
$m=4\times 10^{-5}\times 10^{3}g$
$m=4\times 10^{-2}g$
$m=0.04g$