Carbon dioxide (CO2) gas within a piston-cylinder assembly undergoes an expansion from a state where p1 5 20 lbf/in.2, V1 5 0.5 ft3 to a state where p2 5 5 lbf/in.2, V2 5 2.5 ft3. The relationship between pressure and volume during the process is p 5 A 1 BV, where A and B are constants.
(a) For the CO2, evaluate the work, in ft ? lbf and Btu.
(b) Evaluate A, in lbf/in.2, and B, in (lbf/in.2)/ft