19. Fluid Mechanics

20°C water flows through a 2.0-m-long, 6.0-mm-diameter pipe. What is the maximum flow rate in L/min for which the flow is laminar?

"(I) If the force F needed to move the wire in Fig. 13–37 is 3.1 x 10⁻³ N, calculate the surface tension γ of the enclosed fluid. Assume ℓ = 0.070 m.

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