A solid sphere has a radius of 1.5 cm and a mass of 0.038 kg. What is the relative density of the sphere?
We know that
Relative density = Density of substance/ Density of water
density of sphere=mass/volume of sphere
mass of sphere=0.038kg=38g
volume of sphere=4πr3/3=4π(1.5)3/3=14.13cm3
density of sphere=38/14.13=2.68g/cm3
Density of water=1g/cm3
Relative density =2.68/1=2.68