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A gas is taken through the cyclic process described in the figure. (The x axis is marked in increments of 5 m³.)
P (kPa)
8
6
4
2
B
A
A
C
V (m³)
(a) Find the net energy transferred to the system by heat during one complete cycle.
kJ
(b) If the cycle is reversed-that is, the process follows the path ACBA-what is the net energy input per cycle by heat?
kJ

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