[tex]\cdot[/tex](adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A block of ice falls into a lake who's temperature is 0^{0}c.

Half of a percent of it's mass melts. What is the minimum height the block falls from.

2. Relevant equations

The Latent heat of water:L=79.7[Cal/gr]

Potential energy: E_{P}=mgh

3. The attempt at a solution

the potential energy of the block transforms into heat which melts the ice.

I'm using L, the latent heat in [Cal/Kg] in order to be in the SI unit system and get the height h in meters:

mgh=79,700[itex]\cdot[/itex]0.005[itex]\cdot[/itex]m

[itex]\Rightarrow[/itex]h=40[m]

The answer should be 171[m], according to the book.

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# Homework Help: A block of ice falls and a part melts

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