A nuclear reactor completely fissions of pure and releases of energy

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

A nuclear reactor completely fissions

1.0\,\text{kg}

of pure

^{235}\text{U}

and releases

8.0\times10^{13}\,\text{J}

of energy. Determine the percentage of the original mass that has been converted into energy. (Take

c = 3.0\times10^{8}\,\text{m s}^{-1}

.) (a)

0.089\%

(b)

0.27\%

(c)

0.0089\%

(d)

0.89\%