Physics Help Forum Water energy

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 Nov 29th 2016, 10:03 AM #1 Junior Member   Join Date: Nov 2016 Location: Lithuania Posts: 1 Water energy I have problem to solve but have no clue where to start: Water falls from height of 30 meters , 30% of waters kinetic energy turn into inner energy , how much water temperature will rise? Celcius
 Nov 29th 2016, 01:04 PM #2 Senior Member   Join Date: Jun 2010 Location: NC Posts: 366 Rather Subtle Problem... Please forgive my bypass of the Socratic Method. Here's a similar problem. Wreck at Batavia | THERMO Spoken Here! Good Luck with your studies, JP Attached Thumbnails
Dec 5th 2016, 06:37 PM   #3
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 Originally Posted by Ugnius I have problem to solve but have no clue where to start: Water falls from height of 30 meters , 30% of waters kinetic energy turn into inner energy , how much water temperature will rise? Celcius
That depends upon how many kilograms of water fall. If one kg of water falls 30 m, its kinetic energy increases by "mgh"= (1)(9.8)(30)= 294 joules. If 30% of that energy turns into "inner energy" then the energy of the water increases by 0.30(294)= 88.2 joules. How much will that increase the temperature of the water.

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