solve it in paper and scan it to me :) A piston cylinder device contains 10 kg o

Question

solve it in paper and scan it to me :)

A piston cylinder device contains 10 kg of saturated liquid water 150 degree C. An electrical resistor is inserted into the system to heat the water at the voltage of 120V and current of 100A. This resistor is turned on for 15 minutes, during which the temperature in the cylinder remains at 150 degree C but the volume gradually increases to 2m3. Please determine: 1) the internal energy of the water at the initial state; 2) the internal energy of the water at the final state; 3) the boundary work; and 4) the heat transfer.

Explanation / Answer

Pinitial=n*R*T/V1;

Pfinal=n*R*T/V2;

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