Question: Problem 8 Consider two realistic situations taking place at external pressure of 1 bar and initial tem- perature of 305 K, where the change in

Problem 8 Consider two realistic situations taking place at external pressure

Problem 8 Consider two realistic situations taking place at external pressure of 1 bar and initial tem- perature of 305 K, where the change in the system state can be approximated as a reversible adiabatic process of an ideal gas with Cy = 5/2R. a) A nearly flat bicycle tire has been pumped up to the final pressure of 3.75 bar. Find the final temperature of the air in the tire. b) An automobile tire contains air at 255 kPa. The stem valve is removed and the air is allowed to expand against the constant external pressure of one bar until P = Pext: Find the final temperature of the air in the tire. c) Which of processes (a) or (b) results in cooling of the tire. Explain why

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