Answer to Question #1584 in Molecular Physics | Thermodynamics for Ian

Question

P0 = 100kpa. Two set of stops, lower stops are stops 1 while the upper stops are stops 2.
A 30 kg piston is resting on stops 1. Volume under stop 1 is 0.2m^3 and volume under stop 2 is 0.7m^3. Therefore, the min volume is 0.2m^3 while the max volume is capped at 0.7m^3. 0.5kg of water underneath the piston, currently at 30C. The water is heated to 105C.
1) Does the piston float off stops 1 at the end of the process? If the piston does, does it hit stop 2?
2) What is the work done? What is the heat transfer?

Answer 1

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