The surface tension of water is 72 dyne/cm.

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Question:
The surface tension of water is 72 dyne/cm. Convert it to SI unit.

Solution:

Surface tension of water is $72 \mathrm{dyne} / \mathrm{cm}$ In S.I. unit, it is $=0.072 \mathrm{~N} / \mathrm{m}$