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Homework Help: Interferance coherant sources

  1. Dec 11, 2009 #1
    1.
    Problem #3
    A radio transmitter is placed in the origin of a Cartesian coordinate system and emits a signal at angular frequency ωo. The signal from the transmitter travels freely along the positive x direction until it reaches a wall, at a distance L from the origin. The wall reflects the radio signal back toward the origin. You are walking, with a radio receiver, from the wall to the transmitter:
    a) What is the wavelength of the transmitted signal?
    b) Find the distance xb from the origin at which you encounter the first maximum of interference.
    c) Find the distance xc from the origin at which you encounter the first minimum of interference.
    d) How many maxima of interference do you encounter by the time you reach the transmitter?
    Assume that the signal wavelength is significantly shorter than the distance between the transmitter and the wall.
    ________________________________________________________________________



    2. wavelength=2(pi)v/w0



    3. Wavelength is easy enough to find, i get that i have to find the first point where a half wavlength overlaps a full one, but im not sure hot to calculate it!
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    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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