Question

what questions do you have?
join your discussion
now that you have a better understanding of some of the math topics you’ve recently covered, take some time to think about these brainteasers and then join the discussion to voice your opinions.
questions

1. now is your chance to find examples of sinusoids. come up with some examples of natural or man - made phenomena that repeat at predictable intervals.

search the internet to find descriptions, and post the link as well as your analysis of why the behavior is periodic. you do not have to find an equation or write one. examples already given in the lessons for this unit are off limits, so look for something new.

Explanation:

Answer:

Natural phenomenon: Tidal patterns (rise and fall of ocean tides), which follow a sinusoidal pattern with a period of ~12 hours.
Man-made phenomenon: Alternating current (AC) electricity, described by $I(t) = I_0\sin(\omega t + \phi)$, with a typical period of $\frac{1}{60}$ seconds in the US.