The diagram given below shows a body floating in three different liquids A, B and C at different levels.

(a) In which liquid does the body experience the greatest buoyant force?

(b) Which liquid has the least density?

(c) Which liquid has the highest density?

Explain why an iron needle sinks in water, but a ship made of iron floats on water.

Why does a piece of ice float on water?

The density of water is 1.0 g cm^-3. The density of iron is 7.8 g cm^-3. The density of mercury is 13.6 g cm^-3. Answer the following:

(a) Will a piece of iron float or sink in water?

(b) Will a piece of iron float or sink in mercury?