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Reflection and phase difference

  1. Nov 10, 2014 #1
    1. The problem statement, all variables and given/known data
    Hi,
    This is not a homework question. I have my exam for my physics unit tomorrow. I am pretty set for it except for questions of this type. Can you please show me how I can get the answer?

    Thanks


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    2. Relevant equations
    N/A

    3. The attempt at a solution
    N/A
     

    Attached Files:

  2. jcsd
  3. Nov 10, 2014 #2

    berkeman

    User Avatar

    Staff: Mentor

    Even if it is a study question for an exam, the PF Homework Help rules still apply. You must show the Relevant Equations (yes there are some), and shnow your Attemp at a Solution. This is pretty straightforward if you show some effort on it, IMO.
     
  4. Nov 10, 2014 #3
    That;s the problem. I don't know what equations to use here.
     
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