Homework Help: Physics

Posted by Ray on Tuesday, November 17, 2009 at 12:44am.

A block of wood with volume V floats in water with 0.68V submerged. In oil the block floats with 0.86V of its volume submerged.

What's the density of the wood?

Physics - drwls, Tuesday, November 17, 2009 at 1:27am
All you need to answer that is the amount submerged in water, and the density of water.

According to Archimedes Principle:
(Water density) * 0.68 V
= (wood density)* V
Cancel out the V and use the density of water
1.00 g/cm^3 * 0.68 = wood density

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