Physics, 16.12.2019 22:31 Hardydonotmess1
The change in pitch of a train's horn as it passes while you are standing still can be explained by
a. resonance.
b. the doppler effect.
c. sympathetic vibration.
d. ultrasonic vibrations.
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Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine
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During the past 150 years in the united states, how did energy consumption compare to population growth
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