A pipe-line carrying water has average height of irregularities projecting from the surface of the boundary of the pipe as 0.15 mm. What type of boundary is it? The shear stress developed is 4.9 N/m². The kinematic viscosity of water is .01 stokes.

What is the dynamic viscosity of the fluid? must include FBD F ... F = 0.45 Ibf m = 151 g v = 0.006 m/s Thk. = 20 cm THISE AN 8mm 6mm, A Steel Plate is pulled up at a constant QU velocity between two layers of liquid 30 cm Ignore Friction at openings @ 20°C @ 20°C 1940

Example The velocity distribution for flow over a plate is gives by u = 2y - y² where u is the velocity in m/s at a distance y meters above the plate. Determine the velocity gradient and shear stress at the boundary and 1.5 m from it. Take dynamic viscosity of fluid as 0.9 N.s/m2.

I would really appreciate it if you could tell me how to solve the problem.