Answer :
Answer:
Due to the Doppler effect
Explanation:
This effect is called "Doppler effect".
It occurs when there is a source of a wave in relative motion with respect to an observer.
In this situation, there is a change in the apparent frequency of the sound, as observed by the observer. In particular, the apparent frequency is given by:
[tex]f'=\frac{v\pm v_o}{v\pm v_s}f[/tex]
where
f is the real frequency of the wave
f' is the apparent frequency
v is the speed of the wave
[tex]v_o[/tex] is the velocity of the observer
[tex]v_s[/tex] is the velocity of the wave source
This phenomenon occurs, for instance, with sound waves; a daily example is when we hear the sound of the siren of an ambulance. We have 2 possible situations:
- When the ambulance is moving towards us, we hear an increase in the frequency of the sound
- When the ambulance is moving away from us, we hear a decrease in the frequency of the sound
Answer:
The doppler effect
Explanation:
The sound is moving therefore doppler effect BOOM!!!!!!!!!