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Eight droplets of mercury each of radius...

Eight droplets of mercury each of radius 1 mm coalesces into a single drop. Find the change in the surface energy. Surface tension of mercury is `0.465 J//m^2`

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CHETANA PUBLICATION-MECHANICAL PROPERTIES OF FLUIDS-Exercise
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  9. A capillary tube of uniform bore is dipped vertically in water which r...

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