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P12_Heat_Engine

# P12_Heat_Engine - Heat Engine with ideal gas Operation of a...

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Heat Engine with ideal gas

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Operation of a Heat Engine Slide 11-26
Can we convert all E th to W ? Slide 11-26 N NO!

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Q C can never be 0 Slide 11-26 Q C = 0
Recall: PV graphs

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Ideal-Gas Processes We can represent the state of a gas by a point on a pV diagram. A process can be represented by a path on this diagram. Constant-Volume Process P f V f T f = Π ι ς ι Τ ι Slide 12-29
Constant-Pressure Process Isobaric P f V f T f = Π ι ς ι Τ ι

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Constant-Temperature Process Isothermal Slide 12-30 P f V f T f = Π ι ς ι Τ ι
Checking Understanding: Gas-Law Processes A sample of gas is in a cylinder with a moveable piston. The force on the piston can be varied, altering the pressure and volume. A sample of gas is taken from an initial state to a final state following a curve on a pV diagram at right. The final temperature is A. higher than the initial temperature. B. the same as the initial temperature. C. lower than the initial temperature. Slide 12-31

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Answer A sample of gas is in a cylinder with a moveable piston. The force on the piston can be varied, altering the pressure and volume. A sample of gas is taken from an initial state to a final state following a curve on a pV diagram at right. The final temperature is A. higher than the initial temperature.
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P12_Heat_Engine - Heat Engine with ideal gas Operation of a...

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