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Homework Help: Determining wavelength

  1. Feb 6, 2009 #1
    Please help!

    In my physics, I need to find the wavelengths of the waves from a source in a different medium.

    In the first medium, my angle of incidence is 35 degrees and with a speed of 150m/s and a frequency of 75Hz. In the different medium the speed has dropped to 96m/s. I know the angle of refraction will be smaller. But how do I figure that out as well as the frequency in order to determine the wavelength?
  2. jcsd
  3. Feb 6, 2009 #2
    i guess what i really want to know is if frequency changes as it crosses a medium,
  4. Feb 6, 2009 #3


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    Staff Emeritus
    Science Advisor
    Homework Helper

    Nope, frequency is the one constant.
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