Air enters a 28-cm diameter pipe steadily at 200 kPa and 20 deg C with a velocity of 5 m/s. Air is heated as it flows, and leaves the pipe at 180 kPa and 40 deg C. Determine: (a) the volume flow rate of air at the inlet (b) the mass flow rate of air (c) the velocity and volume flow rate at the exit. Air 200 kPa 180 kPa 20°C 40°C 5 m/s

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