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    The height of the water on a beach can be approximated as simple harmonic motion with a period of 12hours If the mean water height is 3.5m, the amplitude of the tide is 1.6m, and `high water' occurs at 7am one day, what would you predict the height of the water to be at 11am?

    Please help i have spent so long on this question.
    i used equation x=Acos(w)t
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    (Original post by joyoustele)
    The height of the water on a beach can be approximated as simple harmonic motion with a period of 12hours If the mean water height is 3.5m, the amplitude of the tide is 1.6m, and `high water' occurs at 7am one day, what would you predict the height of the water to be at 11am?

    Please help i have spent so long on this question.
    i used equation x=Acos(w)t

    https://uk.answers.yahoo.com/questio...6072259AAAqaeF
 
 
 
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