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WileyPLUS Secure h edugen wileyplus.co m/edugen/student/ E Apps HP Connected Watch NHL Live Stre watch NBA Live Strea D X 2017-b R 20 Bianchi order Wiley PLUS Help Contact Log Out WileyPLUS Cutnell, Physics, 10e GENERAL PHYSICS Home Read, Study & Practice Assignment Gradebook ORION Assignment Open Assignment PRINTER VERSION BACK FULL SCREEN NEXT ASSIGNMENT RESOURCES Chapter 16, Problem 080 The security alarm on a parked car goes off and produces a frequency of 820 Hz. The speed of sound is 343 m/s. As you drive toward Chapter 16 Problem 068 this parked car, pass it, and drive away, you observe the frequency to change by 84.6 Hz. At what speed are you driving? Chapter 16 Problem 076 Number Units Chapter 16, Problem 080 Focus on Concepts, the tolerance is +/-2% Focus on Concepts uestion 04 LINK TO TEXT uestion 08 Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER Chapter 11 Problem 002 Chapter 11 Problem 009 Copyright O 2000-2017 by John Wiley & Sons, Inc. or related companies. All rights reserved Chapter 11 Problem 020 7:21 PM Type here to search 4/21/2017

Explanation / Answer

df = change in frequency

df = f)towards - f)away = f1 - f2

when observer is moving towards source = f1 = (1 + vo/v)*f0

awhen observer is moving away from source = f2 = (1 - vo/v)*f0

df = (1 + v0/v)*f0 - (1 - v0/v)*f0

v = speed of sound

v0 = your speed

df = 2*f0*v0/v

v0 = df*v/(2*f0)

v0 = 84.6*343/(2*820) = 17.69 m/sec

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