7. A polytripic process of air from 150 psia, 300 deg F, and 1 ft occurs to P2 = 20 psia. The process has a polytropic index of 1.3. Prove that: a. t2 = 17.4 deg F and 4.711 cu. ft; b. - du = 25.81 BTU, - dH = 36.14 BTU, and ds = 0.0141 BTU/R; c. S pdV = 34. 41 BTU and -S pdV = 44.73 BTU ; and d. W, = 44.73 BTU for dKE = 0. %3D %3D %3D

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Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.