Question: The cross-sectional radius of a pipeline decreases gradually as r = roe -ax, where a = 0.50 m-1, x is the distance from the pipeline

The cross-sectional radius of a pipeline decreases gradually as r = roe -ax, where a = 0.50 m-1, x is the distance from the pipeline inlet. Find the ratio of Reynolds numbers for two cross-sections separated by Δx = 3.2 m.

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