\( 0.08 \, \mathrm{kg} \) air is heated at constant volume through \( 5^\circ \mathrm{C} \). The specific heat of air at constant volume is \( 0.17 \, \mathrm{kcal/ \, kg ^\circ C^{}} \) and \( J = 4.18 \, \mathrm{joule/cal} \). The change in its internal energy is approximately
