Homework Help: Physics

Posted by Smithy on Monday, March 14, 2011 at 8:17pm.

While watching ocean waves at the dock of the bay, Otis notices that 9 waves pass beneath him in 28 seconds. He also notices that the crests of successive waves exactly coincide with the posts that are 5 meters apart. What are the period, frequency, wavelength, and speed of the ocean wave?
What is the period?
Frequency?
Wavelength?
and speed?

Physics - Sivashen, Monday, March 21, 2011 at 5:39am
FREQUENCY=...... 9WAVES:28SECONDS
X WAVES:1SECOND
28X=9
X=9/28
X=0.32HZ

PERIOD=1/F
=1/0.32
=3.13SECONDS

WAVELENGTH
=TOTAL DISTANCE/NUMBER OF WAVES
=9*5/9
=45/9
=5

SPEED
V=F*WAVELENGTH
V=0.32HZ*5
V=1.6 M.S

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