Homework Help: Physics - Buoyancy

Posted by Phil on Thursday, November 11, 2010 at 12:09pm.

A scale reads 20.3 N when an object is not submerged in water and 20.0 N when the object is (completely) submerged in water.

What is the specific gravity of the object?

Physics - Buoyancy - bobpursley, Thursday, November 11, 2010 at 1:46pm
well, it has .3N of bouyancy.

that is equivalent to what volume of water?

.3=densitywater*g*volume
solve for volume

then density= weight/volume=20.3/volume

and specfic gravity= denstiy/denstiywater.
Physics - Buoyancy - Anonymous, Thursday, August 11, 2011 at 9:09am
What is the volume , in L occupied by 50.0 kg ethanol at 20 degree centimeter ? the density of ethanol at 20 degree centimeter is 0.789 g/ml ?

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