A cylinder of radius R and height H and density ρC is floating upright in water and a portion remains above the waterline. The density of water is ρ. What fraction of the cylinder is below the water line? Derive an expression for the difference between the pressure at the cylinder’s lower (submerged) surface and atmospheric pressure.

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.