Earth absorbs ${10}^{22}$ joule energy day from the sun. What will be the percentage increase in the earth's mass $\left(6.0\times {10}^{24} \mathrm{kg}\right)$ due to this?

The mass-defect in a nuclear fusion reaction is $0.3 \%$. What amount of energy will be liberated in $1 \mathrm{kg}$ fusion reaction?

( $1\mathrm{amu}=1.66\times {10}^{-27 \mathrm{kg}}$)

What is the equivalent energy in electron-volt of $1$ gram mass?

($1\mathrm{amu}=1.66\times {10}^{-27}\mathrm{kg}$)