Sound Frequency and Wavelength - 搜索视频

Texts: A high-speed train is traveling at a speed of 44.7 m/s (100 mi/h) when the engineer sounds the 415-Hz warning horn. The speed of sound is 343 m/s. What is the frequency and wavelength of the sound, as perceived by a person standing at a crossing, when the train is (a) approaching and (b) leaving the crossing?

Texts: A high-speed train is traveling at a speed of 44.7 m/s (100 mi/h) when the engineer sounds the 415-Hz warning horn. The speed of sound is 343 m/s. What is the frequency

VIDEO ANSWER: The speed of the train is equal to 44.7 m per second and the sound v is equal to 343 m per second when the train approaches the observed frequenc…

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