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Question
The volume of a 500 g sealed packet is 350 cm3. Will the packet float or sink in water if the density of water is 1 g cm−3? What will be the mass of the water displaced by this packet?
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Solution
Mass of the sealed packet = 500 g
Volume of sealed packet = 350 cm3
Density of water = 1 g/cm3
Since density = `"mass"/"volume"`
Density = `500/350`
Density = 1.42 g/cm3
Hence the density of the given sealed packet is 1.42 g/cm3.
Since the density of the given sealed packet is more than the density of water = 1 g/cm3, it will sink in water.
Volume of water displaced = 350 cm3
Density = `"mass of water displaced"/"volume of water displaced"`
1 = `"Mass of displaced water"/350`
Mass of water displaced = 350g
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