An object of average density rho floats at the surface of a fluid of density rhofluid. (a) How must the two densities be related? (b) Now suppose the object is not fully submerged. In terms of rho and rhofluid what fraction of the object is submerged and what fraction is above the fluid? Check that your answers give the correct limiting behavior as rho → rhofluid and as rho → 0. (c)In view of the answers to parts (a) and (b), how can steel ships float in water?