A police car moving at 48 m/s passes a truck moving at 35 m/s in the same direction. If the frequency of the siren is 800 Hz relative to the police car, what is the frequency (in Hz) heard by an observer in the truck when police car is behind truck? What is the frequency (in Hz) heard by an observer in the truck when police car is ahead of truck? (The speed of sound in air is 343 m/s.)

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 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 train whistle emits a sound at a frequency of 300 Hz when it is stationary. If you are at the…

A: The frequency of the sound heard by the observer when the source is moving to a stationary observer…

Q: A car moving at 20.0 m/s passes a stationary ambulance, the siren of which produces a frequency of…

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Q: You are in auto traveling at 44 m/s toward a pole-mounted warning siren. If the siren's frequency is…

A: In this case, the source of the frequency is fixed and the observer is approaching the source, with…

Q: A car is moving at 110 miles per hour passes a stationary police car whose siren has a frequency of…

A: Given:  velocity of source, vs = 0 m/s  frequency, f = 500 Hz  velocity of sound, v = 343 m/s…

Q: police car siren has a frequency of 850 Hz. If you hear this siren to have a frequency that is…

A: Given that            Car siren has a frequency of (fsource) = 850Hz            The frequency that…

Q: Crickets produce a musical chirping sound at a frequency around 10,000 Hz (very high pitched)! The…

A: Answer :-  Given   Frequency of sound (f) = 10000 Hz  Wavelength (λ) = 0.03 m  Speed of sound  = V…

Q: You are in an auto traveling at 85 m/s toward a pole-mounted warning siren. If the siren’s frequency…

A: Given data: Speed of observer toward the source (vo) = 85 m/s Source is stationary. Frequency…

Q: You are in an auto traveling at 62 m/s toward a pole-mounted warning siren. If the siren’s frequency…

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Q: An ambulance with a siren emitting a frequency of 1600Hz overtakes and passes a cyclist pedaling a…

A: Given: The original frequency (fs) of the ambulance is 1600 Hz. The frequency (fo) observed by the…

Q: A bat emits a sound at a frequency of 30.0 kHz as it approaches a wall. The bat detects beats such…

A: The given data are: f1=30 kHz=30000 Hzfb=900 Hzc=340 m/s Here, f1 is the frequency of the sound…

Q: The driver of a car, who is approaching a siren at a speed of 90 km/h hears a sound with frequency…

A: Given Data : The speed of the car initially is given as vi=90 Kmh The frequency of the sound heard…

Q: The frequency of the siren of an ambulance is 900 Hz and is approaching you. You are standing on a…

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Q: You are driving at 30 m/s away from a police cruiser that is chasing you. You hear the siren as 412…

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Q: What is the frequency a stationary observer hears when a train approaches her with a speed of 30…

A: The equation for the frequency heard by the stationary observer can be given by the equation,

Q: blood-flow meter emits a 1.9-MHz ultrasound pulse to measure the speed of blood moving directly away…

A:

Q: A train whistle is heard at 300 Hz as the train approaches town. The train cuts its speed in half as…

A: The frequency corresponds to before the speed of train slowing down is

Q: A bystander hears a siren vary in frequency from 590 Hz to 368 Hz as a fire truck approaches, passes…

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Q: If a stationary dolphin emits a call at a sound frequency of 53 kHz. The sound wave reflects off a…

A: Original frequency of sound produced by stationary dolphin (f) = 53 kHz speed of sound (v) = 343 m/s…

Q: A train approaches a crossing at a velocity of 102 m/s. It sounds its horn, which has a frequency of…

A: velocity of train vs = 102 m/sfrequency f = 400Hzspeed of sound v =343 m/s

Q: Person A is holding a speaker which is emitting sound of frequency of 520 Hz and passes person B.…

A: Doppler effect is when there is a change in frequency of the sound heard due to the relative motion…

Q: alk, you hear a frequency of 570 Hz from the siren of an approaching ambulance. After the ambulance…

A: The frequency of the  siren of an approaching ambulance, when you  standing at a crosswalk  f1 = 570…

Q: A bystander hears a siren vary in frequency from 584 Hz to 370 Hz as a fire truck approaches, passes…

A: Ans:- Image-1

Q: A bird flying directly toward a stationary bird watcher and emits a frequency of 1100 Hz. The bird…

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Q: A hiker shouts towards a vertical cliff that is 465 m away. The echo is heard 2.75 s later. What is…

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Q: What frequency is received by a person watching an oncoming ambulance moving at 100 km/h and…

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Q: Ann was sitting on a bench near the highway, then suddenly she heard a siren coming with a frequency…

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Q: You are moving at 20 m/s. A police car with a siren blasting is first behind you and overtaking you.…

A: The Doppler effect equation when the source is moving towards the observer is given as,