# Find the equilbrium temperature

1. Sep 2, 2015

### WeiLoong

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. Sep 2, 2015

### Titan97

[Deleted]

Last edited: Sep 2, 2015
3. Sep 2, 2015

### insightful

Check your math!

4. Sep 2, 2015

### WeiLoong

Hahaa i found my mistake it should be Qa/5 :D

5. Sep 2, 2015

### WeiLoong

I have no idea how to use this equation, Can you show me Ta using this formula? :D

6. Sep 2, 2015

### Titan97

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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