Question: A system is taken from Figure state a to state b along the three paths shown in Fig. 19.23. (a) Along which path is the

A system is taken from Figure state a to state b along the three paths shown in Fig. 19.23.
(a) Along which path is the work done by the system the greatest? The least?
(b) If Uh > Ua, along which path is the absolute value | Q | of the heat transfer the greatest? For this path, is heat absorbed or liberated by the system?

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