Question and answer
The change in pitch of a train's horn as it passes while you are standing still can be explained by A. sympathetic vibration. B. ultrasonic vibrations. C. resonance. D. the Doppler effect.
C. the Doppler effect.
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Original conversation
User: The change in pitch of a train's horn as it passes while you are standing still can be explained by A. sympathetic vibration. B. ultrasonic vibrations. C. resonance. D. the Doppler effect.

Weegy: C. the Doppler effect.
Mayang30|Points 1052|

User: The distance from one molecule in a body to the nearest molecule in the body occupying a similar position and moving in the same direction is a A. compression. B. rarefaction. C. wavelength. D. refraction.

Weegy: The distance from one molecule in a body to the nearest molecule in the body occupying a similar position and moving in the same direction is a Wavelength.
GavinLorin|Points 0|

User: The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the A. outer ear. B. inner ear. C. middle ear. D. auditory nerve.

Weegy: The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the C. middle ear.
debnjerry|Points 52973|

User: Through which one of the following mediums is the velocity of a sound wave the greatest? A. Steel B. Water C. Air D. Lead

Weegy: D. Lead - - is the velocity of a sound wave the greatest.
Expert answered|yumdrea|Points 3105|

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Asked 361 days ago|11/25/2013 2:03:51 PM
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Asked 361 days ago|11/25/2013 10:12:22 AM
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