1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: A question about temperature

  1. Sep 24, 2011 #1
    1. The problem statement, all variables and given/known data
    A piece of copper of mass 170g is cooled in a freezer. it's then dropped into water at 0degree,causing 4 g of water to freeze.determine the temperature inside the freezer.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Sep 24, 2011 #2
    Is all the water frozen?
  4. Sep 24, 2011 #3
    No_Only 4g
  5. Sep 24, 2011 #4
    try conservation of energy principle:
    ignoring heat losses to the surroundings, then
    energy guven out by copper = energy gained by water
  6. Sep 24, 2011 #5
    Okay.But I don't understand that formula.Can you explain to me?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook