In parts of the Midwestern United States, sirens sound when a severe storm that may producea tornado is approaching. Mandy is walking at a speed of 1.56 m/s directly toward one sirenand directly away from another siren when they both begin to sound with a frequency of698 Hz. (a) What frequency does she hear from the siren that she is walking toward?(b) What frequency does she hear from the siren that she is walking away from? (c) Whatbeat frequency does Mandy hear? Include a diagram of the situation.

Answered: Image /qna-images/answer/3faa0289-5b5e-4c25-840f-1fc490b29ed4.jpg

Answered: In parts of the Midwestern United…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A bystander hears a siren vary in frequency from 590 Hz to 368 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.)
A fire engine siren emits sound at 1260 Hz. The fire engine is driving down the street toward you at 29 m/s. (The speed of sound in air is 343 m/s.) What frequency sound do you hear? What frequency sound do you hear after the fire engine passes you?
If the velocity of blood flow in the aorta is about (0.32 m/s), what is the pulse frequency you would expect if ultrasound waves with a frequency of (4.3 MHz) were directed along the blood flow and the waves were reflected from the red blood cells Suppose waves travel at a speed of 103x1.54 m/s. O 17.88 kHz O 178.80 Hz O 1.788 kHz с O 0.178 kHz 17.88 Hz 0
An ultrasound unit is being used to measure a patient’s heartbeat by combining the emitted 2.0 MHz signal with the sound waves reflected from the moving tissue of one point on the heart. The beat frequency between the two signals has a maximum value of 520 Hz. What is the maximum speed of the heart tissue?
A fire truck sits at rest and emits a sound from its siren with a frequency of 385.0 Hz. If you are biking away from the fire truck at a velocity of 5.200 m/s, what frequency will you hear from the siren? Assume the speed of the sound being emitted from the siren is 327.0 m/s.
the siren of a fire truck that is traveling northward at 40.0 m/s emits a sound wave of frequency 3000 Hz. a car in front of the truck is also traveling northward at 20.0 m/s. the temperature of the calm air outside (not windy) is 10.0 degrees Celcius. (a) what is the frequency of the siren's sound that the car driver hears? (b) what is the frequency of the siren's sound that the fire truck driver hears reflected from the car in front of it?
*82. GO A loudspeaker in a parked car is producing sound whose frequency is 20 510 Hz. A healthy young person with normal hearing is standing nearby on the sidewalk but cannot hear the sound because the frequency is too high. When the car is moving, however, this person can hear the sound. (a) Is the car moving toward or away from the person? Why? (b) If the speed of sound is 343 m/s, what is the minimum speed of the moving car?
A baseball hits a car, breaking its window and triggering its alarm which sounds at a frequency of 1270 Hz. What frequency (in Hz) is heard by a boy on a bicycle riding away from the car at 7.95 m/s? Take the speed of sound to be 343 m/s
Two submarines are underwater and approaching each other head-on. Sub A has a speed of 12.6 m/s and sub B has a speed of 8.99 m/s. Sub A sends out a 1530-Hz sonar wave that travels at a speed of 1522 m/s. (a) What is the frequency detected by sub B? (b) Part of the sonar wave is reflected fromB and returns to A. What frequency does A detect for this reflected wave? (a) Number Units (b) Number Units
If the velocity of blood flow in the aorta is about (0.32 m/s), what is the pulse frequency you would expect if ultrasound waves with a frequency of (4.3 MHz) were directed along the blood flow and reflected from the red blood cells? Suppose waves travel at a speed of 103x1.54 m/s. 17.88 KHz 178.80 Hz O 1.788 KHZ O 0.178 KHz O 17.88 Hz
You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind and you perceive the frequency as 1370 Hz. You are relieved that he is in pursuit of a different speeder when he continues past you, but now you perceive the frequency as 1330 Hz. What is the speed of the police car? The speed of sound in air is 343 m/s.
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