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What is the volume of a 10 kg object if its density is 2 kg/m³?

0.5 m³.

2 m³.

5 m³.

1 m³.

What is the density of a cube if the mass is 200 kg and the side length of the cube is 2 m?

500 kg/m³.

100 kg/m³.

50 kg/m³.

1000 kg/m³.

Which of the following best describes the role of density in engineering works?

Materials with low density are less expensive to work with.

Denser materials are always stronger.

Lighter materials are always more durable.

The choice of materials depends on the required strength, flexibility, and weight.

If the density of oil is 0.9 g/cm³, will it float or sink in water?

Neither.

Float.

Both float and sink.

Sink.

Which of the following is true about the density of gases?

Gases have a very high density compared to solids.

The density of gases is higher than liquids at all temperatures.

The density of gases is independent of pressure and temperature.

Gases have a low density compared to liquids and solids.