- #1
roam
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Homework Statement
Ocean waves with a wavelength of 120 m are coming in at a rate of 8 per minute. What is their speed?
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
[tex]T=\frac{8}{60}=0.13[/tex]
Now we find frequency
[tex]f=\frac{1}{T}=\frac{1}{0.13}=7.5[/tex]
[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?