A rectangular block of wood floats in water with two-third of its volume immersed .when placed in another liquid,it floats with half of its volume immersed.calculate the relative density of the liquid
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Let Pw be the density of water and Pl the density of the liquid
W = M g the weight of the block
W = Pw * 2 V / 3 * g weight of water displaced
W = Pl * V /2 * g weight of liquid displaced
Pl / Pw = (2 / 3) / (1 / 2) = 4 / 3
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