SOLUTION: In a Joule experiment, a mass of 2.00 kg falls through a height of 30.0 m and rotates a paddle wheel that stirs 0.400 kg of water. The water is initially at 15 degrees C. By how mu

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: In a Joule experiment, a mass of 2.00 kg falls through a height of 30.0 m and rotates a paddle wheel that stirs 0.400 kg of water. The water is initially at 15 degrees C. By how mu      Log On


   

Question 1067181: In a Joule experiment, a mass of 2.00 kg falls through a height of 30.0 m and rotates a paddle wheel that stirs 0.400 kg of water. The water is initially at 15 degrees C. By how much does its temperature rise (in degrees C)?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the potential energy of the mass drop.
PE=mgh=2%289.8%29%2830%29=588J
Assume that 100% of the energy is transferred to the water,
mC%5BP%5DDELTA%2AT=588
Units of C%5BP%5D is J%2F%28gC%29 so convert mass from kg to g.
400%284.186%29DELTA%2AT=588
DELTA%2AT=0.352C