Oil of viscosity 0.1 Pa.s and specific gravity 0.90, flows through a horizontal pipe of 25 mm diameter. If the pressure drop per meter length of the pipe is 12 kPa, determine (a) the rate of flow in N/min; (b) the shear stress at the pipe wall; (c) the Reynolds number of the flow; and (d) the power required in W per 50 m length of pipe to maintain the flow. [Take: unit weight of water = 9810 N/m³]

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Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?