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Homework Help: Two waves in phase

  1. May 7, 2015 #1
    1. The problem statement, all variables and given/known data
    I have the formula l2 - l1 = m lambda and I am not sure what each part of the equation stands for? I think l2 and l1 are distances to where the waves meet but I am not sure.

    Thanks

    2. Relevant equations


    3. The attempt at a solution
     
  2. jcsd
  3. May 7, 2015 #2

    CWatters

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    Science Advisor
    Homework Helper
    Gold Member

    I believe you are right but context is everything.

    Try drawing it.
     
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