Question: Consider air flowing in a 4 in . Diameter pipe with a mass flux of 0 . 2 5 slug / sec at 6 0

Consider air flowing in a 4 in. Diameter pipe with a mass flux of 0.25 slug/sec at 60\deg F and 45 psia.
Calculate the velocity of the pipe undergoes a conversion to a 2 in by 3 in rectangular duct in which temperature and pressure is 160\deg F and 8 psia

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