clicker28_09 - B. 415 Hz and 440 Hz C. Both are 440 Hz D....

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1 Middle C on the piano is 440 Hz. The speed of sound in air is about 330 m/s. What is the wavelength of this sound wave? 1. 4.7 m 2. 1.3 m 3. 0.75 m 4. 0.87 c = λ /T = λ ƒ 26. At rest, a car’s horn sounds the note A (440 Hz). The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car’s speed hears a frequency of 415 Hz. What is the speed of the car? Is the cyclist ahead of or behind the car? What are f O and f S ? A. 440 Hz and 415 Hz
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Unformatted text preview: B. 415 Hz and 440 Hz C. Both are 440 Hz D. Both are 415 Hz 26. At rest, a cars horn sounds the note A (440 Hz). The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the cars speed hears a frequency of 415 Hz. What is the speed of the car? Is the cyclist ahead of or behind the car? Is the cyclist ahead of or behind the car? A. Behind B. Ahead C. Next to each other D. The cyclist imagining things...
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This note was uploaded on 05/17/2011 for the course PHY 2053 taught by Professor Buchler during the Spring '06 term at University of Florida.

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