The average human has a density of 950 kg/m3 after inhaling and 1018 kg/m3 after exhaling.

(a) Without making any swimming movements, what percentage of the human body would be above the surface in the Dead Sea (a lake with a water density of about 1230 kg/m3) in each of these cases?
After Inhaling (%)and After Exhaling (%)

1 answer

Let V be the volume of the body.

Let v' be the volume of the body displaced.

densitywater*v'=densitybody*V

solve for v'/v