Calculate the change in internal energy of the system if $37.6 \mathrm{~J}$ of work is done by the system…
Calculate the change in internal energy of the system if $37.6 \mathrm{~J}$ of work is done by the system with heat loss of $14.6 \mathrm{~J}$ ?
$-52.2 \mathrm{~J}$
$-549 \mathrm{~J}$
$-12.57 \mathrm{~J}$
$-23.0 \mathrm{~J}$
Solution
From I $^{\text {st }}$ law of thermodynamic
According to $\mathrm{I}^{\text {st }}$ law of thermodynamics
$\begin{aligned} & \Delta \mathrm{E}=\delta \mathrm{Q}+\delta \mathrm{W} \\ & =-14.6+(-37.6) \\ & =-52.2 \mathrm{J}\end{aligned}$