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An ideal gas with Cv = 5/2R, and γ = 1.4 starts at a volume of...

An ideal gas with Cv = 5/2R, and γ = 1.4 starts at a volume of 2.0m^3, a pressure of 3.0 × 10^5Pa, and a temperature of 300K. The gas undergoes an isochoric cooling where its pressure decreases to 1.0 × 10^5Pa. It then undergoes an adiabatic contraction until its pressure returns to 3.0×10^5Pa. It finally undergoes an isobaric heating until it returns to a volume of 2.0m^3.

What is the efficiency of this heat engine?

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23 2m 1-y XID W net v, 0.91 ml (3x105) (2-0.91 438 xI0 816 2

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