Monday

April 21, 2014

April 21, 2014

Posted by **-** on Tuesday, January 26, 2010 at 7:53pm.

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??

- math pls -
**drwls**, Tuesday, January 26, 2010 at 8:15pmIn 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.

**Related Questions**

physics - Calculate the tidal force experienced by Io. How does it compare to ...

astronomy - Calculate the tidal force experienced by Io. How does it compare to ...

Science - Why does the Moon exert a greater tidal influence than the Sun?

physics - Which of these three produces a greater tidal effect on you right now—...

Astronomy help - I have already solve the problems in many time, but still ...

physics - Rank the average gravitational forces from greatest to least between:A...

Physics (please help) - Calculate the magnitudes of the gravitational forces ...

Astronomy - Explain what occurs during tidal friction?

Physic - The tidal interaction between the Earth and the Moon has caused:

physics - Calculate the magnitudes of the gravitational forces exerted on the ...