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The surface tension of water is 72 dyne/...

The surface tension of water is 72 dyne/cm. convert it in SI unit.

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Surface tension `= sigma = 72 ` dyne `//` cm `= ( 72 xx 10^(-5) N )/( 10^(-2)m) = 72 xx 10^(-3) N//m`
Surface energy is numerically equal to the surface tension.
Surface energy `= 72 xx 10^(-3) J //m^(3)`
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