If the relative density of Aluminium is 2.7 find its density in si and CGS unit
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Relative density = Density of substance / Density of water
From above,
Density of substance = Relative Density × Density of water
In SI units
Density of water = 1000 kg/m³
Density of Aluminium = 2.7 × 1000 kg/m³ = 2700 kg/m³
In CGS units
Density of water = 1 g/cm³
Density of Aluminium = 2.7 × 1 g/cm³ = 2.7 g/cm³
From above,
Density of substance = Relative Density × Density of water
In SI units
Density of water = 1000 kg/m³
Density of Aluminium = 2.7 × 1000 kg/m³ = 2700 kg/m³
In CGS units
Density of water = 1 g/cm³
Density of Aluminium = 2.7 × 1 g/cm³ = 2.7 g/cm³
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