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Thermal Expansion

  1. Apr 11, 2010 #1
    1. The problem statement, all variables and given/known data

    A brass ring of diameter 10.00cm at 20.0*C is heated and slipped over an aluminum rod of diameter 10.01cm at 20.0*C. Assuming the average coefficients of linerar expansion are constant, to what temperature must the combination be cooled to separate the two metals?

    2. Relevant equations

    [tex]\alpha[/tex] of brass = 19e-6
    [tex]\Delta[/tex]A = [tex]\gamma[/tex] A_o[tex]\Delta[/tex]T

    3. The attempt at a solution

    That's the equation i believe i should be using, but somehow i don't really even know where to begin except for plug and chug. I'm supposed to get the answer of -179*C. =[ please help!
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
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