Air at 40°C and pressure of 300 kPa (abs) flows from a large tank through a converging nozzle. If…

Air at 40°C and pressure of 300 kPa (abs) flows from a large
tank through a converging nozzle. If the Mach number at the outlet of the
nozzle is 0.5, calculate the velocity, pressure, temperature and density at the
nozzle exit. (Take k = 1.4 and R = 287 J/(kg.K).

Air at 5°C is moving at Mach number 2.5. If a normal shock
wave occurs, estimate the ratios of pressure, velocity, temperature and density
across the shock. Assume k = 1.4 and R = 287 J/(kg.K).