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Thermal Coefficient Question

  1. Dec 10, 2009 #1
    1. The problem statement, all variables and given/known data
    There is a picture of two metal bars that are glued together of equal length (doesn't specify the type of metals). At 0 degrees C, they are not bent. At 20 degrees C, they are both equally bent (still attached together, bent the same way). Do they have the same or different thermal coefficients?


    2. Relevant equations
    No equations really required for this question - it's conceptual.


    3. The attempt at a solution

    My guess is that they have the same thermal coefficient. I just want to make sure. Thanks!
     
  2. jcsd
  3. Dec 10, 2009 #2

    rock.freak667

    User Avatar
    Homework Helper

    Yes, they will have the same coefficient, since the lengths are the same.

    ΔL=Lα(ΔT)
     
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