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Tidal forces are greatest when the Eaetg, the sun and the moon are in line. When this occurs at the Annapolis Tidal Generating Station, the waterhas a maximum depth of 9.6 m at 4:30 pm and a minimum depthof 0.4 m 6.2 hourslater.
the equation is:
y= 4.6cos (2pi/12.4) (t-4.5) + 5
I don't know how the phase shift was determined.
What is the depth of the water at 9:30 am and 6:45 pm??
the equation is:
y= 4.6cos (2pi/12.4) (t-4.5) + 5
I don't know how the phase shift was determined.
What is the depth of the water at 9:30 am and 6:45 pm??
Answers
Answered by
drwls
In your equation, t is the number of hours past noon.
At 9:30 AM, use your equation with t = -2.5 (hours)
At 6:45 PM, use your equation at 2.25 h.
Cosine function fits to tidal variations, such as this, are not good for much more than 12 hours. The amplitude is constantly changing.
At 9:30 AM, use your equation with t = -2.5 (hours)
At 6:45 PM, use your equation at 2.25 h.
Cosine function fits to tidal variations, such as this, are not good for much more than 12 hours. The amplitude is constantly changing.
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