A solid ball with a mass m = 0.53 kg floats in a tank of water. The ball is

made of material with a density of 400
. The density of water is 1000
. What fraction of the volume of the ball is below the waterline?

what are the units of 400 density? I assume grams/liter.

if the ball is floating, then it is displacing 530ml of water.

the balls total volume is mass/density=530g/400g/l=1330ml

percent under water=530/133O= you do it.