The dry weight of a man is 845 N. When he is submerged underwater, the reading on the scale is only 43.2 N.
(a) What is the volume of the man?
(b) What is the density of the man?
(c) The density of fat is 209 kg/m3, and the density of the "lean" parts of the human body (muscle, bones, and so on) is 2670 kg/m3. What percentage of the man's body mass is "lean body mass"?