A piece of steel has a volume of 12 cm3, and a mass of 96 g. What is its density: (i) In g/cm3? (ii) In kg/m3?
Volume, V= 12cm3= 12 × 10-6
Mass, m = 96 g = 96 × 10-3
We know,
Density, D = m/ V
(i) In g/cm3
D = 96/12
= 8 g/cm3
ii) In kg/m3
D = 96 * 10-3 / 12 * 10-6
= 8 * 103 kg/m3