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A vertical axis cylinder 0.075m2 in cross sectional area is open to the atmosphere at one...

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Mechanical Engineering

A vertical axis cylinder 0.075m2 in cross sectionalarea is open to the atmosphere at one end and closed at the otherby a piston which supports a mass of 85 kg. the piston is supportedby compressed air. 5.46kJ of heat is transferred to the air and thepiston lifts the mass through 55cm. What is the increase ininternal energy, U, during the process? Draw the path of theprocess on a PV diagram.

Patmos= 1.03 bar Ans=0.75 kJ

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