Question

1. Explain the meaning of the statement Relative
density of aluminium is 2.7'.
2. How does the density of a body and that of a
liquid determine whether the body will float or
sink into that liquid ?
3. A cork piece floats on water surface while an iron nail sinks in it. Explain the reason.​

Answer 1

A cork floats in water while the iron nail sinks because the density of cork is less than that of water.

Answer 2

Answer:

I want answer in km not in min