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Homework Help: Formula Conduction

  1. Nov 16, 2014 #1
    1. The problem statement, all variables and given/known data
    Two bars are placed between plates whose temperatures are Thotand Tcold . The thermal conductivity of bar 1 is six times that of bar 2 (k1 = 6k2), but bar 1 has only one-third the cross-sectional area (A1=1/3 A2 ). Ignore any heat loss through the sides of the bars. Which statement below correctly describes the heat conducted by the bars in a given amount of time?

    2. Relevant equations

    3. The attempt at a solution
    Bar 1 conducts twice the heat as does bar 2; Q1 = 2Q2 is the answer but how??
  2. jcsd
  3. Nov 16, 2014 #2


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    2017 Award

    Staff: Mentor

    You missed section 2 in the homework template which gives the answer: You should have a formula for heat conduction in your textbook/script where you can just plug in values.
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