A heat engine performs the reversible cycle abca with 9.0 moles of an ideal gas,as shown in the figure.Path ca is an adiabatic process.The temperatures at points a and b are 300 K and 500 K,respectively.The volume at point c is 0.20 m³.The adiabatic constant of the gas is .The thermal efficiency of this engine is closest to A) 0.070. B) 0.10. C) 0.13. D) 0.16. E) 0.19.

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The Answer of A heat engine performs the reversible cycle abca with 9.0 moles of an ideal gas,as shown in the figure.Path ca is an adiabatic process.The temperatures at points a and b are 300 K and 500 K,respectively.The volume at point c is 0.20 m³.The adiabatic constant of the gas is .The thermal efficiency of this engine is closest to A) 0.070. B) 0.10. C) 0.13. D) 0.16. E) 0.19.

A Heat Engine Performs the Reversible Cycle Abca with 9