Posted by **haylee** on Monday, February 28, 2011 at 6:32pm.

While watching ocean waves at the dock of the bay, Otis notices that 8 waves pass beneath him in 30 seconds. He also notices that the crests of successive waves exactly coincide with the posts that are 3 meters apart. What are the period, frequency, wavelength, and speed of the ocean wave?

- physics -
**Dan**, Monday, February 28, 2011 at 8:39pm
Frequency is the number of waves that pass by in one second. You know that 8 waves pass by in 30 seconds. How many pass by in 1 second?

Period is the time it takes for one wave to pass by. Period is the inverse of frequency (T = 1/f).

Wavelength is the distance measured from crest to crest.

The speed of the waves can be calculated by multiplying wavelength by the frequency.

- physics -
**hossein**, Thursday, February 16, 2012 at 10:44am
frequency is 8/30=./2

period is =1/(8/30)=1/(./2)=5

wavelength is 30 meters and speed of ocean waves is according to above formula becomes (30*./2)=6 m/s

good luck students of physics more study and very more practice physics problems.

alhosseiny from iran(tehran)

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