#physics

#density

Density is defined as:

The mass per unit volume of a material

Density is related to mass and volume by the following equation:

ρ = density, measured in kilograms per metre cubed (kg m−3)

m = mass, measured in kilograms (kg)

V = volume, measured in metres cubed (m3)

ex : -

Gases, for example, are generally less dense than solids because the particles in a gas are more spread out (same mass, over a larger volume)

The units of density depend on what units are used for mass and volume:

• If the mass is measured in g and volume in cm3, then the density will be in g/cm3

• If the mass is measured in kg and volume in m3, then the density will be in kg/m3

volume to calculate density