Go Back   Physics Help Forum > High School and Pre-University Physics Help > Energy and Work

Energy and Work Energy and Work Physics Help Forum

Reply
 
LinkBack Thread Tools Display Modes
Old Nov 29th 2016, 09:03 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
Ugnius is offline   Reply With Quote
Old Nov 29th 2016, 12:04 PM   #2
Senior Member
 
Join Date: Jun 2010
Location: NC
Posts: 393
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
Water energy-dropped_water.gif  
THERMO Spoken Here is offline   Reply With Quote
Old Dec 5th 2016, 05:37 PM   #3
Senior Member
 
Join Date: Aug 2010
Posts: 334
Originally Posted by Ugnius View Post
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.
HallsofIvy is offline   Reply With Quote
Reply

  Physics Help Forum > High School and Pre-University Physics Help > Energy and Work

Tags
energy, water



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
kinetic energy of a falling body in water Tim1 Energy and Work 4 Aug 21st 2015 12:00 PM
Energy of water flow in a channel pheonixrider Thermodynamics and Fluid Mechanics 3 Jan 29th 2015 07:54 AM
Energy in a free vortex of water pheonixrider Thermodynamics and Fluid Mechanics 0 Jan 28th 2015 10:32 AM
How much energy do i need? and how much water? John1506 Thermodynamics and Fluid Mechanics 0 Nov 11th 2008 01:47 PM
Water jug and Conservation of Energy DivideBy0 Energy and Work 4 Jul 3rd 2008 10:05 AM


Facebook Twitter Google+ RSS Feed