A 30 cm diameter pipe is connected by a reducer to a 10 cm diameter pipe. Points 1 (on the 30 cm diam. ) and 2 (on the 10 cm diam. ) are along the same elevation. The pressure at 1 is 250 KPa. The flow is 50 liters per second and the energy lost between 1 and 2 is equivalent to 20 KPa. Compute the pressure at 2 if the liquid flowing has a specific gravity of 1.30.

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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?