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During an upgrade the city replaces a water main pipe with a pipe having twice the...

During an upgrade the city replaces a water main pipe with a pipe having twice the diameter of the old pipe.
By what factor will the flow rate in the new pipe increase compared to the old pipe? (Assume all other
factors are unchanged)

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Answer #1

Use the definition of flow rate to find the required factor by which the flow rate changes after diameter is doubled

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