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What is the total dynamic head of a pumping system where the total static head is...

What is the total dynamic head of a pumping system where the total static head is 50 ft, the total friction head loss is 5 ft, and the velocity head is 10 ft? (b) For a flow of 25 cfs, what is the power required for a pump in units of hp and kW, if the pump has an efficiency of 70%?. (c) What is the flowrate for 2 pumps in series?

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