A piece of wood floats on water. The buoyant force on wood will be:

1. zero
2. more than the weight of the wood piece.
3. equal to the weight of the wood piece.
4. less than the weight of the wood piece.

The weight of a body is more than the buoyant force experienced by it, due to a liquid. The body will:

1. sink
2. float with its some part outside the liquid.
3. float just below the surface of liquid.
4. float with whole of its volume above the surface of liquid.

Name the S.I. unit of density. How is it related to g cm^-3.

The density of brass is 8.4 g cm^-3. What do you mean by this statement?