Solution: Air at standard conditions enters the compressor shown in the figure at a rate of 10 ft^3/s. It leaves the tank through a 1.2 in diameter pipe with a density of .0035 slugs/ft^3 and a uniform speed of 700 ft/s. a) Determine the rate (slugs/s) at which the mass of the air in the tank is increasing or decreasing. b) Determine the average time rate of change of air densityh within the tank.

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Air at standard conditions enters the compressor shown in the figure at a rate of 10 ft^3/s. It leaves the tank through a 1.2 in diameter pipe with a density of .0035 slugs/ft^3 and a uniform speed of 700 ft/s. a) Determine the rate (slugs/s) at which the mass of the air in the tank is increasing or decreasing. b) Determine the average time rate of change of air densityh within the tank.