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Find the equilbrium temperature

  1. Sep 2, 2015 #1
    1. The problem statement, all variables and given/known data
    The thermal conductivites of the materials are 2k,k,4k respectively. Find the equilibrium temperature at X-Y Y-Zhttps://scontent-kul1-1.xx.fbcdn.net/hphotos-xpt1/v/t34.0-12/11950919_10204794824222021_851218095_n.jpg?oh=c15562066e063b2b164fbe7255d7d5d2&oe=55E9175C

    2. Relevant equations
    Thermal Conduction
    3. The attempt at a solution
    https://scontent-kul1-1.xx.fbcdn.net/hphotos-xft1/v/t34.0-12/11992166_10204794929704658_463646175_n.jpg?oh=b21361a78faa1427bd9de5c2a4d57a5c&oe=55EA2FB8
    I am not sure whether i get it correct or not
     
  2. jcsd
  3. Sep 2, 2015 #2

    Titan97

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    [Deleted]
     
    Last edited: Sep 2, 2015
  4. Sep 2, 2015 #3
    Check your math!
     
  5. Sep 2, 2015 #4
    Hahaa i found my mistake it should be Qa/5 :D
     
  6. Sep 2, 2015 #5
    I have no idea how to use this equation, Can you show me Ta using this formula? :D
     
  7. Sep 2, 2015 #6

    Titan97

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    I am sorry. I meant ##R=\frac{l}{kA}##. R is the resistance. Then use ##H=\frac{\Delta T}{R}##. Its the same thing as you have done. I was in a hurry.
     
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