Hydraulics and Fluid Mechanics in ME
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if

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

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Hydraulics and Fluid Mechanics in ME
Surface tension

Acts in the plane of the interface normal to any line in the surface
Decreases with fall in temperature
Is also known as capillarity
Is a function of the curvature of the interface

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