How much work is done by the air inside

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Reference no: EM131233171

1. A piston/cylinder contains air at 2500 R, 2200 lbf/in.², with V1 = 1 in.3, A_cyl= 1 in.², as shown in Fig. P6.92. The piston is released, and just before the piston exits the end of the cylinder, the pressure inside is 30 lbf/in.2. If the cylinder is insulated, what is its length? How much work is done by the air inside?

2. A 25-ft³ insulated, rigid tank contains air at 110 lbf /in.², 75 F. A valve on the tank is opened, and the pressure inside quickly drops to 20 lbf/in.², at which point the valve is closed. Assuming the air remaining inside has undergone a reversible adiabatic expansion, calculate the mass withdrawn during the process.

Reference no: EM131233171

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