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Kinetic Energy of Particles of Matter

it is observe...

Question

it is observed 1000 water droplets ,each ofdiameter 10 to the power -6 cm (10-6) .combine to form one large spherical water drop.surface tension of water is 7.2 10-2 N/m ,then calculate the ratio between the excess pressures of the one small drop and the large drop so formed.

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