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: Thermal energy homework help?

  1. Mar 7, 2015 #1

    When filling up the tub for a bath, only the hot water tap was turned on. After realizing the mistake after a minute with half the tub at 60 C, how much cold water (as fraction of the whole tub) at 9 C must be added such that the final temperature of the water is 36 C?

    Would the solution have to do with the equation mct=-mct?

    Thanks in advance!
    Last edited by a moderator: Mar 7, 2015
  2. jcsd
  3. Mar 7, 2015 #2


    User Avatar
    2017 Award

    Staff: Mentor

    If you fix the symbols there (are the mct on the left and right side the same thing?) and write down what they mean, you can use this formula, yes.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted