The energy equivalent to a kilogram of matter is about\

Question

Professor PC Thomas Classes · Answer

$\mathrm{E}=\mathrm{mc}^{2} \mathrm{~m}=1 \mathrm{~kg} \quad \mathrm{c}=3 	imes 10^{8} \mathrm{~m} / \mathrm{s}$\ $=1 \mathrm{~kg} 	imes\left(3 	imes 10^{8} \frac{\mathrm{~m}}{\mathrm{~s}}ight)^{2}=\mathrm{J}$