A truck travels southbound on a highway at a speed of 14 m/s. A police car, traveling northbound at a speed of 39 m/s. When the truck approaches the car its siren produces sound at a frequency of 849Hz . What frequency does the driver observe as the truck approaches ?

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter17: Traveling Waves
Section: Chapter Questions
Problem 78PQ: Female Aedes aegypti mosquitoes emit a buzz at about 4.00102 Hz, whereas male A. aegypti mosquitoes...
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A truck travels southbound on a highway at a speed of 14 m/s. A police car, traveling northbound at a speed of 39 m/s. When the truck approaches the car its siren produces sound at a frequency of 849Hz . What frequency does the driver observe as the truck approaches ?
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