Question

the volume of 35g of a substance is 7cm³. If the density of water is 1g/cm³, will the substance float or sink?

Answer 1

it will sink because as we know d= m/v. density is mass times the inverse volume hence answer comes out 5g/cm³. As it us more denser it will sink down because buoyant force won't be much enough to keep it to surface.

Answer 2

hii friend,
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mass = 35g
volume = 7cm³
density = mass/volume = 35/7 = 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 = 7 cm³
mass of water displaced = volume×density = 7×1 = 7g
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