Question

An ambulance is generating a siren sound at a frequency of 2,400 Hz. The speed of sound is 345. 0 m/s. The observer is traveling at a velocity of 24. 00 m/s toward the ambulance and the ambulance is traveling at a velocity of 24. 00 m/s toward the observer. What is the frequency of the siren perceived by the observer

Answer 1

The frequency of the siren perceived by the observer be 2759 Hz.

What is Doppler effect?

When a wave source is moving relative to an observer, the Doppler effect or Doppler shift is a phenomena that can be seen. A typical physical illustration of the Doppler Effect is when an ambulance crosses you while its siren is on. Let's take a closer look at the Doppler effect's nuances in this post.

Frequency of sound; f = 2400 Hz.

speed of sound; v =  345. 0 m/s

The observer is traveling at a velocity: $v_o$  =24. 00 m/s toward the ambulance.

The ambulance is traveling at a velocity $v_s$ =  24. 00 m/s toward the observer.

So, according to Doppler effect, the frequency of the siren perceived by the observer:

f₁ = $\frac{v + v_o}{v - v_s}$f

= (345 + 24)/(345 - 24) × 2,400 Hz.

= 2759 Hz.

Hence, The frequency of the siren perceived by the observer be 2759 Hz.

Learn more about Doppler effect here:

https://brainly.com/question/15318474

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