Horizontal commercial steel (new) pipe, 150m in diameter, carries 3.5 m^2/sec of water at 20°C. Calculate the pressure change in the pipe per km length = 1.300 × 10^4 m^2/sec and roughness = 0.045 mm for the pipe.

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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?