Physics

Problem

A small household consumes

6.0\,\text{kWh}

of electrical energy per day. Assuming all the energy comes from fission of

^{235}\text{U}

and each fission releases

200\,\text{MeV}

, the number of fissions needed per day is closest to a)

1.1\times 10^{15}

6.8\times 10^{18}

6.7\times 10^{17}

1.6\times 10^{19}