A certain part of cast iron piping of a water dis tribution system involves a parallel sec...

A certain part of cast iron piping of a water dis tribution system involves a parallel section. Both parallel pipes have a diameter of 30 cm, and the flow is fully tur bulent. One of the branches (pipe A) is 1500 m long while the other branch (pipe B) is 2500 m long. If the flow rate through pipe A is 0.4 m³/s, determine the flow rate through pipe B. Disregard minor losses and assume the water temperature to be 15°C. Show that the flow is fully rough, and thus the friction factor is independent of Reynolds number.