Two Horizontal Pipes Are the Same Length,but Pipe B Has $\frac { \Delta V } { \Delta t }$

question 7

Multiple Choice

Two horizontal pipes are the same length,but pipe B has twice the diameter of pipe A.Water undergoes viscous flow in both pipes,subject to the same pressure difference across the lengths of the pipes.If the flow rate in pipe A is Q = $\frac { \Delta V } { \Delta t }$ ,what is the flow rate in pipe B?

• A)2Q
• B)4Q
• C)8Q
• D)16Q
• E)Q \(\sqrt { 2 }\)

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