A certain man has a mass of 78.0 kg and a density of 996 kg/m3 (excluding the air in his lungs). (a) Calculate his volume (in m3).  m3 (b) Find the buoyant force (in N) air exerts on him.  N (c) What is the ratio of the buoyant force to his weight? buoyant force weight  =

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Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.