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ZL3AI > HUMOUR 28.12.03 14:18l 42 Lines 816 Bytes #999 (0) @ WW
BID : 2563-ZL3AI
Read: DH0GHU GUEST DL4NWM
Subj: Ice cube puzzle
Path: DB0FHN<DB0RGB<DB0MRW<OK0PPL<DB0RES<ON0AR<WB0TAX<N1UAN<ZL2BAU<ZL2BAU<
ZL3VML
Sent: 031228/1127Z @:ZL3VML.#80.NZL.OC #:15484 [Chch-NZ] FBB7.00i $:2563-ZL3AI
From: ZL3AI@ZL3VML.#80.NZL.OC
To : HUMOUR@WW
Puzzle
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A cube of ice floats in a beaker of water, the entire system at 0 degrees
centigrade. Just enough heat is supplied to melt the cube without altering
the system's temperature. Does the water level in the beaker rise, fall, or
just stay the same?
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SCROLL DOWN TO FIND THE SOLUTION
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Answer:
The water level stays the same. An ice cube floats only because its water
has expanded during crystallization; its weight remains the same as the
weight of the water that formed it. Since a floating body displaces its
weight, the melted ice cube will provide the same amount of water as the
volume of water it displaced when frozen.
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