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The change in pitch of a siren as a police car passes is due to the Doppler effect. As the car approaches, the sound waves are compressed, leading to a higher pitch. Once the car passes and moves away, the sound waves are stretched, resulting in a lower pitch. This phenomenon occurs because of the relative motion between the sound source and the observer.

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2mo ago

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What effect causes a siren to change in pitch as it passes by?

doppler effect


What is the name of the effect the causes the pitch of an ambulance siren to change as it passes you?

The Doppler effect


If an emergency vehicle passes you in traffic just as it passes you the pitch of the siren changes This is because?

This change in pitch is due to the Doppler effect, where the frequency of the sound waves from the siren appears higher as the vehicle approaches and lower as it moves away. As the vehicle passes by, the sound waves compress in front of the vehicle (higher pitch) and stretch behind it (lower pitch), creating the change in pitch heard.


A siren is moving past Mary as she sits stuck in traffic To Mary the pitch of the siren changes as it passes her position What causes this to happen?

The Doppler effect causes the pitch of the siren to change as it moves past Mary. As the siren approaches, the sound waves are compressed, resulting in a higher pitch. As it moves away, the sound waves are stretched, resulting in a lower pitch. This change in frequency creates the perception of the siren's pitch changing.


If an emergency vehicle passes you in traffic just as it passes you the pitch of the siren changes. This is because?

frequency.


How can you use Doppler effect in a sentence?

Example sentence - We are learning to what the doppler effect is and how to use it.


Why doesn't the color of the police car change when the pitch of its siren goes up or down?

The color of the police car stays the same regardless of the pitch of its siren because the color is determined by the paint job of the car, which does not change. The siren's pitch going up or down does not affect the color of the car.


The changing pitch of a police cars siren as it moves by you is an example of?

Doppler effect


The changing pitch of a police's car siren as it moves by you is an example of what?

The Doppler effect


When an ambulance passes by the sirens pitch changes. The sounds becomes higher-pitched as it approaches and then the pitch lowers as it gets further away. This change in pitch is known as the Dopp?

The change in pitch of a siren as it approaches and moves away is known as the Doppler effect. This effect occurs because the sound waves emitted by the siren are compressed as the ambulance approaches, leading to a higher pitch, and stretched as it moves away, resulting in a lower pitch.


A siren is moving past Mary as she sits stuck in traffic. To Mary the pitch of the siren changes as it passes her position. What causes this to happen?

The sound waves in front of the siren bunch up, and those behind the siren spread out.


The sound of a police siren that is moving away has wavelengths and one that is approaching has wavelengths.?

The sound of a police siren moving away from you will have longer wavelengths, resulting in a lower pitch or frequency. Conversely, a siren moving towards you will have shorter wavelengths, resulting in a higher pitch or frequency. This phenomenon is known as the Doppler effect.