Question

The sound wave for the note A above middle C can be modeled by the function y = 0.001 sin 880 π ø. What is the amplitude of this equation?

A. 0.001
B. 880
C. π
D. 0.88
E. 288.25

Answer 1

Answer: Option A

`A=0.001`

Explanation:

The sinusoidal functions have the following form

`Y = Asin (bx)`

Where

`(2\pi)/(b)` is the period of the function

A is the amplitude: Half the difference between the minimum value and the maximum value of the function.

In this case the function is:

`y = 0.001sin(880\pi\phi)`

Therefore the amplitude of this equation is
`A=0.001`