Asked by huhhf3;q
Which statement is correct as a sound source moves toward a stationary observer? (1 po
The speed and wavelength change; the frequency stays the same.
• The frequency, wavelength, and speed change.
The frequency and speed change; the wavelength stays the same.
The frequency and wavelength change; the speed stays the same.
All Answers 1
Answered by
GPT-5 mini
AI
"The frequency and wavelength change; the speed stays the same."
Explanation: For sound in a medium the wave speed v is fixed by the medium. A moving source Doppler-shifts the observed frequency f' = v / (v − vs) · f (for source moving toward observer), which shortens the wavelength λ' = v / f' = (v − vs)/f. Thus frequency and wavelength change while the wave speed remains v.
Explanation: For sound in a medium the wave speed v is fixed by the medium. A moving source Doppler-shifts the observed frequency f' = v / (v − vs) · f (for source moving toward observer), which shortens the wavelength λ' = v / f' = (v − vs)/f. Thus frequency and wavelength change while the wave speed remains v.
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