1. Not finding help here? Sign up for a free 30min 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!

Another Entropy Question

  1. Dec 17, 2008 #1
    1. The problem statement, all variables and given/known data
    Each end of a metal wire is in thermal contact with a different heat reservoir.
    Reservoir 1 is at a temperature of 752 K, and reservoir 2 is at a temperature of
    345 K. Compute the total change in entropy that occurs from the conduction of
    1096 J of heat through the wire.

    2. Relevant equations
    dS = dQ / T

    3. The attempt at a solution
    I'm really unsure how to solve this question. Would I do something like this:

    -1096/752 + 1096/345 =
    -1.457 + 3.177 = 1.72 J/K

    Or am I totally off base on this one?
  2. jcsd
  3. Dec 17, 2008 #2

    Andrew Mason

    User Avatar
    Science Advisor
    Homework Helper

    I am not sure why you are unsure. You have the right equation and you have the right answer.

  4. Dec 17, 2008 #3
    Wow, okay... Thanks for the reassurance then! :)

    The question has a point value of 6 points out of a 25 point homework assignment, so I thought there might be more to it than that, but apparently I thought wrong.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Another Entropy Question
  1. Entropy question (Replies: 1)

  2. Entropy Question (Replies: 2)

  3. Another question (Replies: 3)

  4. Another Question (Replies: 4)

  5. Entropy question (Replies: 1)