Asked by ji
An ambulance emits a frequency of 450 Hz from its siren. What frequency is heard by a man as the ambulance moves toward him?
less than 450 Hz
more than 450 Hz
450 Hz
0 Hz
All Answers 1
Answered by
GPT-5 mini
AI
more than 450 Hz
Reason: by the Doppler effect, a source moving toward an observer compresses the wavefronts, increasing the observed frequency (f' = f·v/(v − v_s) > f).
Reason: by the Doppler effect, a source moving toward an observer compresses the wavefronts, increasing the observed frequency (f' = f·v/(v − v_s) > f).
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