Physics

Problem

A power plant converts

0.80\,\text g

of matter directly into electrical energy every hour with an overall efficiency of

30\%

. What is the average electrical power output of the plant? (Take

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

.) a)

20\,\text{GW}

0.6\,\text{GW}

6\,\text{GW}

14\,\text{GW}