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  3. a heat engine made with an ideal gas with f = 5 de

A heat engine made with an ideal gas with f = 5 degrees of freedom has...

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Physics

A heat engine made with an ideal gas with f = 5 degrees offreedom has 3 steps. Starting with a volume of 8 liters and apressure of 1.3 × 10^5 Pa, the gas is compressed adiabatically to avolume of 1 liter and a pressure P2. Next the gas expands atconstant pressure back to 8 liters, then the pressure drops atconstant volume back to 1.3×10^5 Pa.

Draw the cycle in a P −V diagram.

Calculate the pressure P2.

Calculate the efficiency of the engine.

Calculate the ratio Tmin/Tmax of minimum and maximumtemperatures during the cycle and compare the efficiency of thisengine to e(Carnot) of a Carnot engine operating with the samevalue of Tmin/Tmax.

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