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Pouring water and Temperature

1. Homework Statement

a friend of mine came to me with a physics question and I was embarrassed to not have an answer for him!

Water is being poured into a container from height h. What is the change in temperature of the water? I don't even know what direction to look so any help would be appreciated. Thanks.
 

Doc Al

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Hint: Consider the change in mechanical energy of the water. What happens to that energy?
 

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