From: utzoo!decvax!decwrl!sun!megatest!fortune!hpda!hplabs!sri-unix!MERMAN%MIT-OZ@MIT-MC
Newsgroups: net.physics
Title: Ice in water
Article-I.D.: sri-arpa.856
Posted: Fri Apr  8 16:41:00 1983
Received: Sun Apr 10 06:01:19 1983

From:  Dave Goodine <MERMAN%MIT-OZ@MIT-MC>


It depends on the amount of air trapped in the ice-cube, assuming that
we're talking about the about a common ice cube, known to have air
bubbles occupying about 10 to 15% of the space the cube displaces in a
container of water. (The air is obviously why ice floats in water.)
If the cube contains no air(which i'm not sure is even possible), then
it will fall to the bottom and the level of the water will not change
as the cube melts. But, when the the cube has air of mass A trapped
inside, it floats with M mass(M being the value of some function of
the absolute amounts of air and water in the cube) above the water. I
don't know exactly what the function would be, but logically, we can
say that, since all of the air in the ice will be released from the
system, then any change in the level of the water will be (M-A).

Dave Goodine
<MERMAN@MIT-OZ>