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Sound waves

  1. Apr 26, 2010 #1
    1. The problem statement, all variables and given/known data

    (1) A sound wave is traveling through air medium, if the medium is replaced by water, how that will affect the wavelength, frequency and speed of the wave ?

    (2) If the temperature of the air changed, how that will affect the wavelength, frequency and speed of the wave ?


    2. Relevant equations

    Velocity = Frequency × Wavelength

    Velocity of sound wave in air = 331.5 m/s + 0.6 T


    3. The attempt at a solution

    (1) If the medium is replaced by water, which has greater density, the velocity increases. From the equation: Velocity = Frequency × Wavelength

    Frequency or wavelength or maybe both frequency and wavelength must be increased, Could you tell me which one ?

    (2) If temperature changed, velocity will be changed, so that frequency or wavelength must be changed. Could you tell me which one of them will change ?
     
  2. jcsd
  3. Apr 26, 2010 #2
    well, you know that the speed of sound in a specific medium should be (roughly speaking) a constant ..

    you tell me, does it matter to know whether the frequecy is the one which changed or the wavelength?
     
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