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What does the Doppler affect help determine?
The Doppler effect helps measure the speed of moving objects. The most common Doppler effect is the sound of a police siren, as it passes you. The sound of the siren remains constant to the person in the vehicle, but as it approaches you, the pitch, or frequency appears to lower.
The Doppler effect of a passing siren results from an apparent change in?
the frequency of the wavelength
How does does the Doppler effect relate to a passing siren?
Sound is a wave; the sound wave is distorted by the Doppler effect. You can clearly hear the change in pitch, from the point where the car approaches you, to the point where it moves away from you.
If A fire truck siren sounds higher in pitch as it approaches and and lower in pitch as it moves away. What is the name of the phenomenon?
Doppler effect.
Why does the Doppler effect explain why a siren's pitch decreases as it moves away from you?
The siren moves away from the sound waves it has already produced, increasing their wavelength. Make sure it says INCREASING and not DECREASING -Apex :)
What exactly is the Doppler effect?
The Doppler effect is the change in frequency of a sound wave. The Doppler effect causes a siren or engine to have a higher pitch when it is approaching than it does when it is receding.
The changing pitch of a police cars siren as it moves by you is an example of what?
The Doppler effect
What effect causes a siren to change in pitch as it passes by?
doppler effect
As you drive down the road you see and hear an approaching ambulance How is the frequency you hear different from that being produced by the ambulance?
The wavelengths of the sound are compressed, making them shorter, and thus the frequency (and the pitch) higher. So the person in the oncoming car hears the siren operating at a higher pitch than the ambulance driver hears the same siren. This phenomenon is known as the 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
What does the Doppler affect help determine?
The Doppler effect helps measure the speed of moving objects. The most common Doppler effect is the sound of a police siren, as it passes you. The sound of the siren remains constant to the person in the vehicle, but as it approaches you, the pitch, or frequency appears to lower.
The changing pitch of a police's car siren as it moves by you is an example of what?
The Doppler effect
The Doppler effect of a passing siren results from an apparent change in?
the frequency of the wavelength
The changing pitch of a police cars siren as it moves by you is an example of?
Doppler effect
How does does the Doppler effect relate to a passing siren?
Sound is a wave; the sound wave is distorted by the Doppler effect. You can clearly hear the change in pitch, from the point where the car approaches you, to the point where it moves away from you.
Why would a passing race car display more Doppler effect than a passing police siren?
The amount of Doppler shift depends on speed - the faster vehicle will show more Doppler shift.
What conditions would have to be met in order for an ambulance with its siren on not to exhibit the Doppler effect when it passes you?
As far as I know, there will always be a Doppler effect when there is relative movement between the object that emits sound, and the observer (i.e. you, who are listening to the sound).
