Hydraulics & Fluid Mechanics
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

the area is horizontal
All of these
the area is vertical
the area is inclined

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Hydraulics & Fluid Mechanics
The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is

zero at the mid plane and varies linearly with distance from mid plane
zero at plates and increases linearly to midpoint
constant over the cross section
parabolic distribution across the section

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