Question 4 Air at standard conditions enters the compressor shown in Fig. P5.26 at a rate of 10 ft/s. It leaves the tank through a 1.2-in.-diameter pipe with a density of 0.0035 slugs/ft and a uniform speed of 797 ft/s. (a) Determine the rate (slugs/s) at which the mass of air in the tank is increasing or decreasing. (b) Determine the average time rate of change of air density within the tank. (a) DM/Dt=__________slugs/s (b) Dp/Dt =____________slugs/ft^3.s

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