tan Dingwave, atop his motorbike is gunning towards a hill at 20 m/s with his loudspeaker on resonating at 85 Hz. Ana Litical in her chevy is modestly chasing after him at 12 m/s. How much is the beat frequency he heard? Assume sound travels at 345 m/s in air.

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Stan Dingwave, atop his motorbike is gunning towards a hill at 20 m/s with his loudspeaker on resonating at
385 Hz. Ana Litical in her chevy is modestly chasing after him at 12 m/s. How much is the beat frequency
she heard? Assume sound travels at 345 m/s in air.
а. 33.8 Hz
b. 8.5 Hz
C. 9.5 Hz
d. 37.9 Hz
Transcribed Image Text:Stan Dingwave, atop his motorbike is gunning towards a hill at 20 m/s with his loudspeaker on resonating at 385 Hz. Ana Litical in her chevy is modestly chasing after him at 12 m/s. How much is the beat frequency she heard? Assume sound travels at 345 m/s in air. а. 33.8 Hz b. 8.5 Hz C. 9.5 Hz d. 37.9 Hz
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