Q. 22.     The volume of a 500\; g sealed packet is 350\; cm^{3}. . 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? What will be the mass of the water displaced by this packet?

Answers (1)

Mass of the packet = 500 g

Volume of the packet = 350 cm3

Density of the packet is given by

\\\rho =\frac{500}{350}\\ \rho =1.428\ cm^{3}

As the density of the packet is less than that of water it will sink in water.

Volume of the water displaced by the packet = volume of the packet = 350 cm3

Mass of the water displaced by the packet = Volume of the water displaced by the packet X Density of water

                                                                    = 350 X 1

                                                                    = 350 g

Mass of water displaced is less than the mass of packet, so the packet will sink.

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