A piece of marble of volume 20 cm³ weighs 50 g, then the weight of marble in water is
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Mass = 50g
volume = 20cm³
density = mass/volume = 50/20 = 2.5 g/cm³
density of water = 1 g/cm³
Since the density of the substance is greater than the density of water, it will sink in water.
The volume of water displaced = 20 cm³
mass of water displaced = volume×density = 20×1 = 20g
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