Question: A pressure difference of 1.8 103 Pa is needed to drive water ( = 1.0 10-3 Pa s) through a pipe whose

A pressure difference of 1.8 × 103 Pa is needed to drive water (η = 1.0 × 10-3 Pa · s) through a pipe whose radius is 5.1 × 10-3 m. The volume flow rate of the water is 2.8 × 10-4 m3/s. What is the length of the pipe?

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