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anonymous

  • one year ago

Air in the accompanying piston-cylinder device is initially in equilibrium at 200 Celcius. The mass of the hanging weight is 10 kg and the piston diameter is 10 cm. As air cools due to heat transfer to the surroundings, the piston moves to the left, pulling the weight up. Determine (a) the boundary work and (b) the work done in raising the weight for a piston displacement of 37 cm. (c) Explain why the two are different.

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  1. anonymous
    • one year ago
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    I got the work part. It's just W = F*d. But I'm not sure how to work out boundary work.

  2. anonymous
    • one year ago
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    It's just Pressure * Change in Volume btw. In case someone needs it. :) #thermo

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