Air expands adiabatically in a piston-cylinder assembly from an initial state where p = 100 lbf/in.2,...
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Air expands adiabatically in a piston-cylinder assembly from an initial state where p₁ = 100 lbf/in.2, v₁ = 3.704 ft³/lb, and T₁ = 1000 °R, to a final state where p2 = 60 lbf/in.² The process is polytropic with n = 1.4. The change in specific internal energy, in Btu/lb, can be expressed in terms of temperature change as Au= (0.171)(T2-T1). Determine the final temperature, in °R. Kinetic and potential energy effects can be neglected. T2= °R Air expands adiabatically in a piston-cylinder assembly from an initial state where p₁ = 100 lbf/in.2, v₁ = 3.704 ft³/lb, and T₁ = 1000 °R, to a final state where p2 = 60 lbf/in.² The process is polytropic with n = 1.4. The change in specific internal energy, in Btu/lb, can be expressed in terms of temperature change as Au= (0.171)(T2-T1). Determine the final temperature, in °R. Kinetic and potential energy effects can be neglected. T2= °R
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