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Homework Help: Speed of Ocean Waves

  1. May 14, 2010 #1
    1. The problem statement, all variables and given/known data
    Ocean waves with a wavelength of 120 m are coming in at a rate of 8 per minute. What is their speed?

    3. The attempt at a solution

    [tex]\lambda = 120[/tex]

    They are coming in at a rate of 8 per minute, that is 8 in 60 seconds. So the period is


    Now we find frequency


    [tex]v=f \lambda = 120 \times 7.5=900[/tex]

    But this is wrong. It is far larger than the actual answer! What did I do wrong?
  2. jcsd
  3. May 14, 2010 #2


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    Homework Helper

    8 per minute would be the frequency, not the periodic time I believe.
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