Expansion and Compression Boundary Work

The x-coordinate is measured from left to right, with the origin at the initial position of the piston in the horizontal cylinder.
Boundary work is the integral of P dV from state 1 to state 2.


done by the gas on the surroundings during the expansion is represented by the area under the curve of P versus V.
PV diagram that shows that the magnitude of work is the area under the process path between states 1 and 2.
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Ch 4, Lesson A, Page 11 - Expansion and Compression Boundary Work