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Please answer the following questions. 1. does a centrifugal pump work on the positive displacement pronciple?...

Please answer the following questions.
1. does a centrifugal pump work on the positive displacement pronciple?
2. in laminar flow through a pipe, is the velocity profile linear across the diameter?
3. Are friction losses in a pipe independent of the roughness of the pipe at large reynolds numbers?
4. Does the fanning friction factor have unita of shear force per unit wall surface area of pipe?

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Amanda K answered 7 months ago
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