Physics For You Questions on Density:
1. An object has a mass of 100 grams and a volume of 20 cubic centimetres. What is its density?
Density = mass/volume = 100/20 = 5 g/cm3
2. An object has a mass of 40000 kilograms and a volume of 5 cubic centimetres. What is the density?
Density = mass/volume = 40,000/5 = 8000 g/cm3
3. An object has a volume of 3 cubic metres and a density of 6000 kilograms per cubic metre. What is its mass?
Density = mass / volume then mass = density x volume = 6000 x 3 = 18000 kg
4. A water tank measures 2m x 4m x 5m. What mass of water will it contain?
40 kg
5. An object has a mass of 20 000 kilograms and a density of 4000 kilograms per cubic meter. What is its volume?
If Density = mass/ volume then volume = mass / density = 20000/4000 = 5 kg
6. The density of air is 1.3kg/ m3. What mass of air is contained in a room measuring 2.5m x 4m x 10m? How does the compare with your mass?
= 100 kg , this is a lot bigger than my mass.
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