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Room temperature atmospheric air is accelerated by a nozzle steadily from a low velocity to a velocity of 220 m/s. If the nozzle diameter decreases by a factor of 2:
a. What is the inlet velocity of the air?
b. What is the enthalpy change during the process?
c. What are the temperature and pressure at the nozzle exit?
Notes: Assume room temperature specific heats
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