Trucks 1 and 2 each have a siren emitting a pure tone of606 Hz. Truck 1 remains stationary and truck 2 moves at14.1 m/s toward the observer as shown in the diagram. Thespeed of sound is 340 m/s. The observer must run at aspeed ofm/s (along a line segment connecting thetrucks, although direction right or left is not given) to makethe observed beat frequency become zero?D옷+2

Answered: Image /qna-images/answer/ebb0d5c9-d03b-475d-8baa-7b1f50384f4a.jpg

Answered: Trucks 1 and 2 each have a siren…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter13: Mechanical Waves

Section: Chapter Questions

Problem 41P

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80. The security alarm on a parked car goes off and produces a frequencyof 960 Hz. The speed of sound is 343 m/s. As you drive toward thisparked car, pass it, and drive away, you observe the frequency to changeby 95 Hz. At what speed are you driving?
You’ve been hired as a technical consultant to the police department to design a detector-proof device that measures the speed of vehicles. You know that a moving car emits avariety of characteristic sounds. You decide to make a very small device to be placedin the center of the road that will detect a specific frequency emitted by the car asit approaches and then measure the change in that frequency as the car moves off inthe other direction. A microprocessor in the device will then compute the speed of thevehicle. To write the program for the microprocessor you need an equation for the speedof the car using the data received by the microprocessor. Your equation may also includenecessary physical constants (such as the speed of sound).
On the planet Venus a rare volcanic eruption occurs. The sound of it is 30 Hz and it has a wavelength of 13.7 m. How fast must the speed of sound be on Venus?
On the planet Arrakis, a male ornithoid flies toward his female companion at 25.0 m/s while singing at a frequency of 1200 Hz. The stationary female hears a pitch of 1240 Hz. Calculate the speed of sound in the atmosphere of Arrakis.
An ambulance parked at the hospital blows siren and produces a frequency of 740 Hz. A car drives toward this parked ambulance and passes away, the car driver observes a change in frequency of 82 Hz. What is the speed of the car?
An ambulance with a siren emitting a whine at 1660 Hz overtakes and passes a cyclist pedaling a bike at 2.57 m/s. After being passed, the cyclist hears a frequency of 1651 Hz. How fast is the ambulance moving? (Take the speed of sound in air to be 343 m/s.) Number Units the tolerance is +/-2%
While sitting next to a road on a calm, warm 27.9ºC evening, you see an ambulance's lights flashing in the distance coming towards you. You hear a frequency of 150 Hz (you have a very keen ear!). However, you know that ambulances have sirens that emit sound at 140 Hz. How fast is the ambulance approaching you, in m/s
Two trumpet players are trying to play 698.5 Hz, but one of them is sharp (her frequency is too high), so that they create a 11.6 Hz beat frequency. What is the frequency of the sharp player's note?
You are in an auto traveling at 62 m/s toward a pole-mounted warning siren. If the siren’s frequency is 458 Hz, what frequency do you hear? Use 343 m/s as the speed of sound. No need to include the unit. Write your answer in whole numbers.
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A truck sounds a horn with a frequency of 115 Hz as it approaches a cliff. The speed of the truck is 10.5 m s–1. Given the speed of sound in air is 346 m s–1. Determine the beat frequency heard by the truck driver.
Unless otherwise indicated, for this problem, assume that the speed of sound through human tissues is 1540 m/s. Ultrasound reflected from an oncoming bloodstream that is moving at 30.0 cm/s is mixed with the original frequency of 2.50 MHz to produce beats. What is the beat frequency?(Assume that the frequency of 2.50 MHz is accurate to sevensignificant figures.)

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