Question

the volume of 500g sealed packet is 750 cm3 will the packet float or sink ?

Answer 1

Density = mass / volume

Density of packet = 500 / 750

= 0.7 g/cm3

hence, as we know that if a body have lower density than the density of substance in which the body is going to immerse then the body will float.

In this case density of packet is less than the density of water so, packet will float.

Answer 2

Mass=500g
volume=750cubic cm
density=mass/density
=500/750 kg/cubic meter
= o.66
density of the water=1kg/cubic meter
therefore,the density of water > the substance(1 > 0.66) so the substance will float