Question

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. 1a. The vertical scale is set by Ps = 40 Pa, and the horizontal scale is set by Vs = 4.0 m3. (a) Complete the table in Fig. 1b by inserting a plus sign (+), a minus sign (-), or a zero (0) in each indicated cell. (b) What is the net work done by the system as it moves once through the cycle ABCA?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. 1a. The vertical scale is set by Ps = 40 Pa, and the horizontal scale is set by Vs = 4.0 m3.
(a) Complete the table in Fig. 1b by inserting a plus sign (+), a minus sign (-), or a zero (0) in each indicated cell.
(b) What is the net work done by the system as it moves once through the cycle ABCA?

Answer 1

Answer:

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Explanation:

A to B: .... dE is given to be greater than zero. Work done = P dV . since here dV is positive W >0 ; Q= E + W ==> Q>0 so: a. +1 b. +1 B to C: Q is given to be positive; work done =0 since d