Question
A police car releases a siren with a consistent frequency. Two observers are capable of hearing the siren, and their locations are indicated on the diagram.
In what manner does the sound perceived by observer X differ from that perceived by observer Y?
(1 point)
Responses
The pitch of the sounds perceived by both observers is lower than that of the emitted sound.
The pitch of the sounds perceived by both observers is lower than that of the emitted sound.
The sound heard by observer X has a higher pitch.
The sound heard by observer X has a higher pitch.
The pitch of the sounds perceived by both observers matches that of the emitted sound.
The pitch of the sounds perceived by both observers matches that of the emitted sound.
The sound heard by observer X has a lower pitch.
In what manner does the sound perceived by observer X differ from that perceived by observer Y?
(1 point)
Responses
The pitch of the sounds perceived by both observers is lower than that of the emitted sound.
The pitch of the sounds perceived by both observers is lower than that of the emitted sound.
The sound heard by observer X has a higher pitch.
The sound heard by observer X has a higher pitch.
The pitch of the sounds perceived by both observers matches that of the emitted sound.
The pitch of the sounds perceived by both observers matches that of the emitted sound.
The sound heard by observer X has a lower pitch.
Answers
GPT-4o mini
To determine how the sound perceived by observer X differs from that perceived by observer Y, we need to consider the Doppler effect.
If observer X is stationary and the police car is moving towards them, the sound heard by observer X will have a higher pitch than the emitted sound due to the compression of sound waves. Conversely, if observer Y is stationary and the police car is moving away from them, the sound they hear will have a lower pitch due to the elongation of sound waves.
Without the specifics of the diagram and the positions of the observers relative to the source of the sound, it is impossible to definitively state how their pitches differ. However, based on typical scenarios involving a moving siren, the correct response relates to how the motion of the police car affects the perceived pitches of the sound:
- If observer X is closer to the source than observer Y, observer X would hear a higher pitch than observer Y.
- If observer Y is closer, then observer Y would hear a higher pitch.
If the question suggests that the police car is moving towards observer X, then the correct response would be:
**The sound heard by observer X has a higher pitch.**
If it suggests that the police car is moving away from observer X towards observer Y, then you might choose:
**The sound heard by observer X has a lower pitch.**
Given only the options you provided, if we assume typical scenarios, the choice that aligns closely with the common case of a police car approaching (or if observer Y is further away than observer X) is:
**The sound heard by observer X has a higher pitch.**
If observer X is stationary and the police car is moving towards them, the sound heard by observer X will have a higher pitch than the emitted sound due to the compression of sound waves. Conversely, if observer Y is stationary and the police car is moving away from them, the sound they hear will have a lower pitch due to the elongation of sound waves.
Without the specifics of the diagram and the positions of the observers relative to the source of the sound, it is impossible to definitively state how their pitches differ. However, based on typical scenarios involving a moving siren, the correct response relates to how the motion of the police car affects the perceived pitches of the sound:
- If observer X is closer to the source than observer Y, observer X would hear a higher pitch than observer Y.
- If observer Y is closer, then observer Y would hear a higher pitch.
If the question suggests that the police car is moving towards observer X, then the correct response would be:
**The sound heard by observer X has a higher pitch.**
If it suggests that the police car is moving away from observer X towards observer Y, then you might choose:
**The sound heard by observer X has a lower pitch.**
Given only the options you provided, if we assume typical scenarios, the choice that aligns closely with the common case of a police car approaching (or if observer Y is further away than observer X) is:
**The sound heard by observer X has a higher pitch.**