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Physics

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?

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  1. 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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