A 40 mm diameter 2 m long straight uniform pipe carriers a steady flow – McqOptions

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1.	A 40 mm diameter 2 m long straight uniform pipe carriers a steady flow of water (viscosity 1.02 centipoise) at the rate of 3.0 litres per minute. What is the approximate value of the shear stress (in dyne/cm2) on the internal wall of the pipe?
A.	0.0166
B.	0.0812
C.	8.12
D.	0.9932
Answer» C. 8.12

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