Question: Air flows through a convergent-divergent nozzle that has an inlet area of 0.0025 m2. The inlet temperature and pressure are 50°C and 550 kPa, respectively, and the velocity at the inlet is 80 m/s. If the flow is assumed to be isentropic, and if the exit pressure is 120 kPa, find the throat and exit areas and the exit velocity.