University Physics with Modern Physics with Mastering Physics (11th Edition)

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16.64: To produce a 10.0 Hz beat, the bat hears 2000 Hz from its own sound plus 2010 Hz coming from the wall. Call v the magnitude of the bat’s speed, w f the frequency the wall receives (and reflects), and V the speed of sound.
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Unformatted text preview: Bat is moving source and wall is stationary observer: Hz 2000 w v V f V-= (1) Bat is moving observer and wall is stationary source: w Hz 2010 f V v V = + (2) Solve (1) and (2) together: s m 858 . = v...
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