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: Heat problem

  1. Sep 30, 2009 #1
    1. The problem statement, all variables and given/known data
    You pour a certain amount of water at 100C and an equal amount of water at 20C into an insulated container. THe final temperature of the mixture will be (a) 60C (b) Less than 60C (c) greater than 60C.

    2. Relevant equations

    3. The attempt at a solution
    I don't know what formula to use. Can someone give me a hint.
  2. jcsd
  3. Sep 30, 2009 #2


    User Avatar
    Homework Helper

    The usual approach on these heat questions is to write this formula:
    Heat lost by first material = Heat gained by second material

    I trust you have a formula for calculating the heat when you have the temperature change.
  4. Oct 1, 2009 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Surely you have been learning about this in class. If not the correct equations are easily found with a google search.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook