Person A is holding a speaker which is emitting sound of frequency of 520 Hz and passes person B. What is the maximum frequency heard by person B if the velocity of person A is 2 m·s'.
Q: An ultrasound machine can measure blood flow speeds. Assume the machine emits acoustic energy at a…
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Q: A sound wave with intensity 2 x 10 -3 W/m2 is perceived to be modestly loud. Your eardrum is 6 mm in…
A: Intensity of sound (I) = 0.002 Wm2Diameter of eardrum (d) = 6 mm
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: I blow into the lid of an empty bottle to make music. The bottle is 0.27 m deep and sound velocity…
A: Given, Length of bottle l = 0.27 m Velocity of sound v = 331 m/s We know the expression frequency…
Q: Two eagles fly directly toward one another, the first at15.0 m/s and the second at 20.0 m/s. Both…
A: For the first case, the first eagle is the source and the second eagle is the observer. Both the…
Q: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies…
A: Increase in dB level, B2 - B1 = 30.0 dB The intensity picked up by the hearing aid, I1 = 3.9×10-10…
Q: A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1280 Hz. The…
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Q: The siren of a ambulance emits a frequency of 1700 Hz. A stationary observer detects a frequency of…
A: Given that:- f=1700 Hzf'=1825 Hzv=343 m/svs=? Since, observed frequency is more than the actual…
Q: In this problem take the speed of sound to be 348 m/s. A. How fast, in meters per second, does an…
A: Given: speed of sound, v = 348 m/s
Q: The African cicada is the world’s loudest insect, producing a sound intensity level of 107 dB at a…
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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: You are in a car moving at 90 km/h and you see someone at the side of the highway. You use your horn…
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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: Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of…
A: We know that v = 331m/s + 0.6m/s/C * T here T is in celcius
Q: A fire truck emits a sound with frequency of 775Hz a. What is the frequency detected by stationary…
A: Doppler effect is the change in frequency of a wave due to relative motion of the observer and the…
Q: A typical adult ear has a surface area of 2.1×10-3m2. The sound intensity during a normal…
A: Area, A = 2.1×10-3 m²Intensity, I = 3.2×10-6 W/m²Power, P = ?
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 3.00 m long air column is open at both ends. The frequency of a certain harmonic is 410 Hz, and…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: A portable audio speaker has a power output of 8.00 W. (a) If the speaker emits sound equally in all…
A: Since the sound is emitted equally in all directions, considered surface area is spherical in shape.…
Q: A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1175 Hz. The…
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Q: On a 20°C°C night, a bat hovering in the air emits an ultrasonic chirp that has a frequency of 45…
A: It is given that, the temperature of the air is T=20°C the frequency of the source is f=45…
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 bungee jumper jumps from rest and screams with a frequency of 451 Hz. The air temperature is 20…
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Q: An ambulance is generating a siren sound at a frequency of 2,400 Hz. The speed of sound is 345.0…
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Q: Horseshoe bats use the Doppler effect to determine their location. A Horseshoe bat flies toward a…
A: Given: Speed of Horseshoe batv= 15 m/s Frequency of emitted sound f= 19.6 kHz…
Q: A certain noise produces 6.2x10^-4 w/m^2 of power. What is the decibel level of this noise? Given…
A: Given value--- I = 6.2 × 10-4 W/m2 . I0 = 10-12 W/m2 . We have to find--- sound level ?
Q: A vacuum cleaner produces sound with a measured sound level of 70.0 dB. (a) What is the intensity of…
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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: The area of a typical eardrum is about 5.0 × 10–5m2 . Calculate the sound power (the energy per…
A: It is given that,
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- A typical adult ear has a surface area of 1.41 × 10-3 m2. The sound intensity during a normal conversation is about 3.02 × 10-6 W/m2 at the listener's ear. Assume that the sound strikes the surface of the ear perpendicularly. How much power is intercepted by the ear?A sound source with a frequency of 725 Hz moves away from a stationary observer at a rate of 15m/s. What frequency does the observer hear?The speed of sound in air is given as 340 m/s. What is the wave length of a 318 frequency wave?
- A fire truck is moving at 33 m/s, and a car in front of the truck is moving in the same direction at 43 m/s. If a 193-Hz siren blares from the truck, what frequency is heard by the driver of the car at v=343 m/s? No need to include the unit. Write your answer in whole numbers.A bicydist is traveling at t m/s towards a car at rest. if the dniver blows her horn at a frequency. of l627 Hz, what frequency in Hz does the bicyclist hear? Speed of Sound is 343 m/SAs part of a college physics lab. A car that is giving off a sound with a frequency of 350 Hz, is moving towards a group of students that are standing together (not moving). The students measure the sound coming from the car as 385 Hz. What is the speed of the car?
- a noise level meter reads the sound level in a room to be 85 dB. What is the intensity of sound in W/m^2?Standing at a crosswalk, you hear a frequency of 590 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 501 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.) m/sA 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.)
- The African cicada is the world’s loudest insect, producing a sound intensity level of 107 dB at a distance of 0.50 m. What is the intensity of its sound (in W/m2) as heard by someone standing 3.0 m away?A sound has intensity of 5.0 x 10-8 w/m2. (a) What is the sound level in decibel? (b) What is the intensity of another sound 10 decibel louder than the first sound?If a stationary dolphin emits a call at a sound frequency of 53 kHz. The sound wave reflects off a fish moving directly towards the dolphin. And the sound wave echo returns at a frequency of 55 kHz. What is the speed of the fish? The speed of sound is 343 m/s.