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A steel ball floats in a vessel with mer...

A steel ball floats in a vessel with mercury. How will be volume of the part of the ball submerged in mercury change if a layer of water completely covering the ball is poured above the mercury? If `rho_(w), rho_(s)` and `rho_(m)` are the densities of water, steel and mercury, find the ratio of these two volumes in terms in of `rho_(w), rho_(s)` and `rho_(m)`.

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