Air is compressed into a 90 ft3 rigid tank until the pressure is 30.5 psia and the temperature becomes 580 0R. What is the mass of the air in lbm and the change in pressure when the temperature decreases to 300 0R Rair  =   53.342  ft-lbf/ lbm-0R    (c) What is the final pressure of the gas? (The value of gas constant, R = 0.4615 kJ/kg-K, Cp = 1.8723 kJ/kg-K, Cv = 1.4108 kJ/kg-K)

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Air is compressed into a 90 ft3 rigid tank until the pressure is 30.5 psia and the temperature becomes 580 0R. What is the mass of the air in lbm and the change in pressure when the temperature decreases to 300 0R Rair  =   53.342  ft-lbf/ lbm-0R    (c) What is the final pressure of the gas? (The value of gas constant, R = 0.4615 kJ/kg-K, Cp = 1.8723 kJ/kg-K, Cv = 1.4108 kJ/kg-K)
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