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A particular thermodynamic cycle acting on a monatomic ideal gas (y = 1.67) includes an isobaric
expansion, an isochoric cooling, and then a isothermic contraction. The PV diagram is shown in the
image below.
P
V
The isobaric expansion occurs at a pressure of 2.265 × 105 Pa and changes the volume of the
gas from 5.9 × 10 2 m³ to 10.98 × 10-2 m³.
What is the efficiency of the process?

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