Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the

center of gravity of any submerged body
centroid of the volume of fluid vertically above the body
center of the volume of floating body
centriod of the displaced volume of fluid

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Hydraulics & Fluid Mechanics
Two dimensional flow occurs when

the direction and magnitude of the velocity at all points are identical
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
the magnitude and direction of the velocity do not change from point to point in the fluid
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

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