Pressure gradients in tubes

Submitted by Juli Uhl on

The same kind of fluid flows through three very long identical tubes. Each tube has the same diameter but different flow rates of fluid. A scientist measures the pressure of the fluid near the beginning and near the end of each tube.

Which tube has the greatest flow rate (L/min) of fluid?
a) Tube 1
b) Tube 2
c) Tube 3

Explain why the tube you selected has the greatest flow rate (L/min) of liquid.


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This material is based upon work supported by the National Science Foundation (DUE grants: 1438739, 1323162, 1347740, 0736952 and 1022653). Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.