Question

a piston uses 32 j of energy to do work as 68 j of heat are added to the cylinder of the piston. the change in internal energy of the system is j.

Explanation:

Step1: Recall the first - law formula

$\Delta U = Q - W$

Step2: Identify values of Q and W

$Q = 68\ J$, $W = 32\ J$

Step3: Calculate the change in internal energy

$\Delta U=68 - 32=36\ J$

Answer:

36