The ………… is the amount by which the pressure at a suction point of the pump is in excess of the vapour pressure of the liquid. ?
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the net positivity........
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It has no component perpendicular to the horizontal surface. As a result, there is no pressure difference between the liquid side and the vapour side. ... Thus, there is always an excess of pressure on the concave side of a curved liquid surface over the pressure on its convex side due to surface tension.
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