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KJ22
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Homework Statement
Look at the PV diagram of a system above. The units for P and V are atmospheric pressure atm and liter L. Process A to B and B to C are straight lines on it.
How much is the work done by the system from A to C in J?
https://tycho-s.physics.wisc.edu/cgi/courses/shell/common/showme.pl?courses/phys103/fall08/homework/12/pv/pv.gif
HELP: In general, the work done in an expansion from some initial state to some final state is the area under the curve on a PV diagram. So determine the area under the ABC-curve.
HELP: Each square on the diagram has an area of: 1.5 atm * 1 L = 1.5 atm L = 152 J. Estimate the numbers of squares below the ABC-curve and multiply that number by 152 J. Good luck
The Attempt at a Solution
Wab= pressure x change in volume= 303975 Pa(.004meters cubed)= 1215.9
Wbc= pressure x change in volume= 607950 Pa(.006 meters cubed)= 3647.7
W= Wab +Wbc
but this is not correct. Can anyone help me?
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