Physics for IGCSE & O level - Measurements And Units (Section 4 - No. 26)
If the air in the balloon has a volume of 0.008 m³ and the density is 1.3 kg/m³ when cold, what would you need to calculate to find the mass of the air when cold?
Multiply volume by density.
Divide volume by density.
Subtract density from volume.
Divide density by mass.
Explanation
Mass = Density x Volume
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