Density of iron is 7900 kg ${{m}^{-3}}$. Calculate its relative density

cbse
floatation

#1

Density of iron is 7900 kg ${{m}^{-3}}$. Calculate its relative density. Will it float or sink in water? Give reason for your answer.
(Take, density of water = 1000 kg ${{m}^{-3}}$)


#2

Given, density of iron = 7900 kg ${{m}^{-3}}$
Density of water = 1000 kg ${{m}^{-3}}$
Relative density = Density of Iron / Density of water = 7900 kg ${{m}^{-3}}$ /
1000 kg ${{m}^{-3}}$ = 7.9
As the relative density of an iron object is greater than density of water, so it will sink to bottom.