Question: Problem 9 : A 7 5 m long cast - iron pipe, 1 5 cm in diameter, takes water from a lake at 3 m

Problem 9:
A 75 m long cast-iron pipe, 15 cm in diameter, takes water from a lake at 3 m below the lake surface.
The pipe is laid on a 1/25 slope and has a 90\deg bend (R/D =1.0) at mid-length. What is the flow rate if
the pipe discharges into a lake 5 m lower than the intake lake if the water temperature in the pipe is
20\deg C?

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