Question: Air is expanded from a large reservoir in which the pressure and temperature are 500 kPa and 35°C through a variable area duct. A normal shock occurs at a point in the duct where the Mach number is 2.5. Find the pressure and temperature in the flow just downstream of the shock wave. Downstream of the shock wave, the flow is brought to rest in another large reservoir. Find the pressure and temperature in this reservoir. Assume that the flow is one-dimensional and isentropic everywhere except through the shock wave.