Chapter 2.5, Problem 99PE

(a)

To determine

The function $F$ of $v$ if the actual frequency of sound emitted by the ambulance is $560Hz$ when an ambulance is moving toward an observer and the frequency of a sound relative to an observer is given by $F\left(v\right)=f_a\left(\frac{s_0}{s_0-v}\right)$ , where $f_a$ is the actual frequency of the sound at the source, $s_0$ is the speed of the sound in air $\left(772.4\text{mph}\right)$ , and v is the speed at which the source of sound is moving toward the observer.

(b)

To determine

To graph: The sketch of a function given by $F\left(v\right)=560\left(\frac{772.4}{772.4-v}\right)$ on the window $\left[0,1000,100\right]\text{by}\left[0,5000,1000\right]$ .

(c)

To determine

The effect of the frequency of sound when the speed of the ambulance increases.