1.

The oil with specific gravity 0.8, dynamic viscosity of 8 × 10-3 Ns/m2 flows through a smooth pipe of 100 mm diameter and with Reynolds number 2100. The average velocity in the pipe is:

A. 0.21 m/s
B. 0.42 m/s
C. 0.168 m/s
D. 0.105 m/s
Answer» B. 0.42 m/s


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