Physics - Density

Density

Density is the mass per unit volume. It can be measured in several ways.

The most accurate way to calculate the density of any solid, liquid or gas is to divide its mass in kilograms by its volume (length × width × height) in cubic metres.

Density can be found using the equation:

Density=massvolume

ρ=mv

The unit for density is kg/m³. The density of water is approximately 1000 kg/m³ and the density of air is approximately 1.2 kg/m³.

If solid objects are placed in water and they sink, they have a density greater than water (1000 kg/m³). The…