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All right, hello.
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In this question, we're told we have a certain mass of water.
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And we're told how far it falls, 854 meters.
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And we're told if all of that energy goes into heating the water, what will be the temperature rise in the water? so we're looking for some delta t.
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Well, in order to answer this question, we're going to use the idea of conservation, quote unquote, conservation of energy.
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So our initial energy and our final energy are going to be equal for our system.
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Our initial energy in this case is going to be gravitational potential, because we have a mass elevated at some height.
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And then at the end, all of that energy is going to go and be turned into heat.
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So we're going to have q on that side...