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July 29, 2014

Homework Help: physics

Posted by Erica--help! on Monday, November 1, 2010 at 12:38pm.

The average human has a density of 940 kg/m3 after inhaling and 1028 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?

(b) Given that bone and muscle are denser than fat, what physical characteristics differentiate "sinkers" (those who tend to sink in water) from "floaters" (those who readily float)?

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