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Particle question

  1. Jan 10, 2008 #1
    1. The problem statement, all variables and given/known data

    In figure 1.55 diagram I, A, B, C, D, .... are the equilibrium positions of some air particles along an imaginary line XY. Diagram II shows the same particles some time later.

    * * * * * * * * * * * * *
    A B C D E F G H I J K L M

    Diagram I

    * ---- * * * * * ---- * -------* * * * *------- *
    A ---- B C D E F ---G ------ -------I J K L ------ M

    Diagram II

    Figure 1.55

    a) Identify the particles in diagram II that are in phase.
    b) In which direction will C move immediately after this instant in time.

    2. The attempt at a solution

    a) I feel that B- F are in phase with I- L as they are both areas of compression representing crests on a transverse wave.

    However, the answer says A and M are in phase

    b) I feel that C should move right back to the equilibrium position as shown in diagram I, however the answer says C should left.

    Any help would be grateful
     
    Last edited: Jan 10, 2008
  2. jcsd
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