Iron has a density of ρFe = 7.9 g/cm3, and mercury ... ...

    Iron has a density of ρFe = 7.9 g/cm3, and mercury has a density of ρHg = 13.6 g/cm3. A piece of iron is placed in a pool of mercury. Which expression gives the ratio of volume of iron above the surface to volume below the surface of the liquid?
(A) ρFe/ρHg
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 10. Fluids