QUESTION 10 1.5 kg of a fluid is contained in a cylinder at an initial pressure of 30bar. The fluid is allowed
to expand reversibly behind a piston according to the law pv2= constant until the volume is
doubled. The fluid is then cooled reversibly at a constant pressure until the piston regains its
original position: heat is then supplied reversibly with the piston firmly locked in position until
the pressure rises to the original value of 30bar. Calculate the net workdone by the fluid, for an
initial volume of 0.05m3/kg
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