Hydraulics and Fluid Mechanics in ME
Surface tension

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

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Hydraulics and Fluid Mechanics in ME
A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is

zero
one-half its value when cylinder was full
cannot be predicted from the given data
one-fourth its value when cylinder was full

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