math pls

posted by .

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??

  • math pls -

    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.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Science

    Why does the Moon exert a greater tidal influence than the Sun?
  2. astronomy

    Calculate the tidal force experienced by Io. How does it compare to the tidal force experienced by the Moon due to the Earth?
  3. physics

    Calculate the tidal force experienced by Io. How does it compare to the tidal force experienced by the Moon due to the Earth?
  4. physics

    Which of these three produces a greater tidal effect on you right now—the moon, the Earth, or the sunA) The sun.B) The Earth.C) The moon.
  5. Science

    In a tidal barrage scheme, the area of sea-water behind the barrage is 30km^2, tidal depth is 10m and the density of sea water is 1030kgm^-3. a. What energy is possible available from this scheme in one cycle of ebb and flow?
  6. Astronomy help

    I have already solve the problems in many time, but still cannot get the correct answer, can someone kindly help me to solve the problem, please?
  7. Science

    WHICH SYSTEM HAS THE GREATEST TIDAL EFFECT?
  8. Science

    Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides?
  9. Science

    Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides?
  10. Moon Science

    What causes the phases of the moon as observed from the Earth?

More Similar Questions