Answered: Ex. 38 Water rises to a height of 4.5… | bartleby

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Ex. 38 Water rises to a height of 4.5 cm in a
capillary tube of radius (r). Find (r) assuming
the surface tension of water is 72 dynes/ cm.
Take angle of contact of water in glass as 15°.
Density of water = 1000 kg/m,g = 9.8 m/s².
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