First slide

Physical quantities and units

Question

Which of the following is not the units of surface tension?

Moderate

A

$N / m$
B

$J / m^{2}$
C

$kg / s^{2}$
D

kg/m/s

Solution

$[N / m] = [J / m^{2}] = [\frac{{MLT}^{- 2}}{L}]$
$= [{MT}^{- 2}] = [kg / s^{2}]$

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