An engine sounding a whistle of 500 Hz approaches a vertical cliff at 22 m/s when approaching a tunnel in the cliff. Calculate the frequency of the reflected note of the whistle as heard by the driver. Velocity of sound = 340 m/s.
Q: A bat at rest sends out ultrasonic sound waves at 60.0 kHz and receives them returned from an object…
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Q: A police car is approaching you at 26 m/s while you are at rest. The rest frequency of the siren is…
A: Given data: Source is approaching to observer Observer at rest Velocity of the source (vs) = 26…
Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 130 km/h; train 2, a…
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Q: Two trains approach each other, each train traveling at 31 m/s. The engineer on one train sounds his…
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Q: A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1280 Hz. The…
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Q: A certain source of sound waves radiates uniformly in all directions. At a distance of 20 m from the…
A: Given: The distance of the point from the source is 20 m. The sound level is 51 dB. The reference…
Q: The sound from a truck moving at 37m/s reflects from a cliff and is heard by an observer on the…
A: Given data: Speed of sound from truck is, vt=37 m/s. Initial wavelength of sound wave is, λ=0.15 m.…
Q: A train passes by a little boy at the depot. As it moves away from the boy at 65 m/s, the whistle…
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Q: A car is traveling 15 m/s due west rejative to the ground. An ambulance is traveling on the same…
A: Given: frequency, f0 = 1075 Hzspeed of air, c = 341 m/svelocity, vs = 35 m/s v0 = 15…
Q: A bat emits ultrasonic pulses and uses them to navigate and to locate flying insects. If these…
A: Rate of pulse emission: p=2 pulses per second Speed of sound in air: v=344 m/s
Q: Move away from a sound source, from distance r, to r₂ = 2₁. (A) By what factor does the intensity…
A: Intensity is inversely proportional to the square of the distance from the source. β = 10 logI/I0 β…
Q: A siren emitting a frequency of 446 Hz is moving away from a person with a velocity of 105 km/h.…
A: Given Data : The frequency of the siren is given as fs = 446 Hz. The velocity of the siren with…
Q: Two trains approach each other, each train traveling at 30 m/s. The engineer on one train sounds…
A: Given: v1 = v2 = 30 m/s, f1 = 177 Hz, Vs = 340 m/s
Q: If two adjacent frequencies of an organ pipe closed at one end are 550 Hz and 650 Hz, what is the…
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Q: An eagle flying at 28 m/s emits a cry whose frequency is 370 Hz. A blackbird is moving in the same…
A: Given value--- eagle speed = 28 m/s. frequency = 370 Hz. blackbird speed = 10.34 m/s. speed of…
Q: A car traveling north at 21 m>s sounds its 480-Hz horn. A bicyclist travels south on thesame road…
A: The bicyclist is moving towards the car. It is given that, vs=343 m/sfo=480 Hzvc=21 m/svb=6.7 m/s
Q: The driver of a car traveling 27.0 m/s sounds his horn as he approaches an intersection. If the horn…
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Q: A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1370 Hz. The…
A: Data Given , Frequency emits by bird ( fs ) = 1370 Hz Frequency hears by bird watcher ( f0 ) = 1430…
Q: A train passes by a little boy at the depot.As it moves away from the boy at 65m/s, the whistle…
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Q: A sound source with a frequency of 650 Hz moves away from a stationary observer at a rate of 30m/s.…
A: We have given Speed of source Vs = 30 m/s Frequency of sound fs = 650 Hz As observer is…
Q: A person is standing on the side of a road when a car approaches them at 50 m/s while honking their…
A: Given, Speed of car=50 m/s Frequency of horn =600 Hz. Speed of sound =343 m/s We have to find the…
Q: The driver of a car traveling 24.0 m/s sounds his horn as he approaches an intersection. If the horn…
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Q: A 520 Hz whistle is moved toward a listener at a speed of 20 m/s. At the same time, the listener…
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Q: Ultrasound reflected from an oncoming bloodstream that is moving at 33.0 cm/s is mixed with the…
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Q: truck is moving at 33 m/s, and a car in front of the truck is moving in the same direction at 43…
A: Speed of source = vs = 33 m/s Speed of observer vo = 43 m/s Original frequency = 193 Hz
Q: The warning tag on a lawn mower states that it produces noise at a level of 99.0 dB. What is this in…
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Q: Standing at a crosswalk, you hear a frequency of 590 Hz from the siren of an approaching ambulance.…
A: Given that: The speed of the sound is v=343 m/s The speed of the observer is zero, it is at rest.…
Q: A train is moving at a speed of 50 m/s with its whistle on, the frequency of the whistling sound…
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Q: A fire engine siren emits sound at 1260 Hz. The fire engine is driving down the street toward you at…
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Q: Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance.…
A: Given dataThe frequency of the siren from approaching the ambulance is f1 = 520 Hz.The frequency of…
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- A truck travelling west at 60 m/s sounds it's 440 hz horn as it passes a stationary observer. What frequency does the observer hear as the car approaches and recedes?Standing at a crosswalk, you hear a frequency of 550 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 462 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)A train approaches a platform at a speed of 22 km/h while it blows its whistle. Someone on the platform hears the whistle at 342 Hz. Calculate the actual frequency of the whistle. (speed of sound = 343 m/s)
- A train approaches a platform at a speed of 30 km/h while it blows its whistle. Someone on the platform hears the whistle at 275 Hz. Calculate the actual frequency of the whistle. (speed of sound = 343 m/s)A bat at rest sends out ultrasonic sound waves at 54.0 kHz and receives them returned from an object moving directly away from it at 33.0 m/s . What is the received sound frequency?Standing at a crosswalk, you hear a frequency of 570 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 488 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)
- A stationary police car emits a sound of frequency 1200 HzHz that bounces off of a car on the highway and returns with a frequency of 1260 HzHz. The police car is right next to the highway, so the moving car is traveling directly toward or away from it. What frequency would the police car have received if it had been traveling toward the other car at 23.0 m/sm/s ?A bystander hears a siren vary in frequency from 584 Hz to 370 Hz as a fire truck approaches, passes by, and movesaway on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.)A train is moving away from an observer at a speed of 50 m/s with its whistle on, the frequency of the whistling sound being 400 Hz. What should be the approximate frequency heard by a stationary observer? Take the speed of sound as 345 m/s when atmospheric temperature is 24°C. 328 Hz 310 Hz 380 Hz 349 Hz
- Hassan is driving his truck with a velocity of 18m/s towards a mountain. Kevin who is riding in the truck sounds a horn. The sound reflects from the cliff and is heard by Hassan and Kevin on the truck. What is the change in frequency in hertz if the horn had an initial wavelength of )=0.101 m? The temperature that day was 35 degrees celsius. (Speed of sound = 331+0.6 T(in celsius)). Please give your answer as a whole number.A convertible moves toward you and then passes you; all the while, its loudspeakers are producing a sound. The speed of the car is a constant 13.5 m/s, and the speed of sound is 344 m/s. What is the ratio of the frequency you hear while the car is approaching to the frequency you hear while the car is moving away?A truck travelling west at 60 m/s sounds it's 440 hz horn as it passes an observer riding a bike traveling east at 20 m/s. What frequency does the observer hear as the car approaches?