Question

Check my answer?

Im supposed to find two sinusoidal equations that model real-world phenomena, write a description for each equation. For each example, address the following questions: What natural phenomenon does the equation model? What aspect of the natural phenomenon involves data that repeats after a given period of time?

Answer 1

1.) One real life application of a sinusoidal equation are electrical currents. You are able to calculate the frequency of the voltage cycle. The equation for this cycle is: f(t) = 165sin(120π/t). There are 60 cycles per second, the maximum is 165 volts, and the minimum is -165 volts. How many cycles occurred in 1 minute?

2. 2.) Another very interesting real life application of a sinusoidal equation are sound waves. As the note gets higher the period becomes shorter. For the piano note A the equation is: f(t) = sin(2π * 440x). Every second 440 complete cycles occur. Whereas, in the piano note C#, which is a higher note, every second goes through 550 full cycles. How many times faster does note C# cycle than note A?

Answer 2

is that right?

Answer 3

ehh

Answer 4

your 1 is a bit.... not wrong and not correct
only AC- alternating current will have a sinusoidal representation

DC- direct current does exist and is like hooking up a battery to a light bulb

as for specifics of the question, didnt do the research to be sure values are correct

if you would like a third example, pulsars