Задача 43 Определить необходимый напор Н

Task 43 Determine the required pressure H to pass the flow rate Q = 0.04 m3 / s, L = 30 m, d = 150 mm. The roughness of the inner surface of the pipe De = 0.25 mm. Kinematic viscosity coefficient v = 0.0101 cm3/s.

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