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Calculate the change in internal energy for the following substances:
Wood to which we bring 
of heat.
A processed metal log. A metal part is then welded to the log, whereby the log receives 
of heat doing a work of 
.
We observed the water in a glass. The mass of the water is 
. We add ice to the water, which cools the water by 
.
The specific heat capacity of water is 
.
.
.
.
