A thermodynamic system is taken from state A to state B to state C, and then back to A, as shown in the p-V diagram of Fig. 18-37a.

The vertical scale is set by ps =
40 Pa, and the horizontal scale is set by Vs =
4.0 m3. (a)–(g) Complete the table in Fig.18-37b by inserting a plus sign, a minus sign, or a zero in each indicated cell.

What is the net work done by the system as it moves once through the cycle ABCA?