Question

by the method of dimensions, obtain the expression for surface tension S of a liquid, pressure p of the liquid and radius r of capilary tube.
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Answer 1

$The \: surface \: tension \: of \: a \: liquid \: is \: measured \: as \\ the \: force \: per \: length \: acting \: on \: an \: imaginary \: line \: drawn \\ tangentially \: on \: the \: liquid's \: free \: surface. \\ \\ SI \: unit: \: Nm-1 \: or \: Jm-2 \: \\ and \: its \: dimension \: formula \: for \: surface \: tension \: is \\ [MT-2]$

Answer 2

It is what it is is an expression used to characterize a frustrating or challenging situation that a person believes cannot be changed and must just be accepted.