Homework Answers
Doppler's effect.
where cs is the speed of sound, Vr is that of receiver and Vs is
of source.
are apparent and source frequency.
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3. The sound produced by the whistle of a train as it is approaching at a...
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 464 Hz when the train is approaching him and 441 Hz when the train i...
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 464 Hz when the train is approaching him and 441 Hz when the train is receding from him. Using these frequencies, he calculates the speed of the train. What value does he find? (Assume the speed of sound in air is 343 m/s.)
A train is approaching a signal tower at a speed of 40 m/s. The train engineer...
A train is approaching a signal tower at a
speed of 40 m/s. The train engineer sounds the 1000 Hz whistle and
a switchman in the tower responds by sounding the 1200 Hz siren.
The air is still and the speed of sound is 340 m/s. 9) In Situation
16.4, the wavelength of the train whistle tone reaching the
switchman, in SI units, is given by:
A) 0.32
B) 0.34
C) 0.30
D) 0.36
E) 0.38
A train is approaching...
A TRAIN SOUNDS ITS WHISTLE AS IT APPROACHES AND LEAVES A RAILROAD CROSSING. AN OBSERVER AT...
A TRAIN SOUNDS ITS WHISTLE AS IT APPROACHES AND LEAVES A RAILROAD CROSSING. AN OBSERVER AT THE CROSSING MEASURES A FREQUENCY OF 219 HZ AS THE TRAIN APPROACHES AND A FREQUENCY OF 184 HZ AS THE TRAIN LEAVES. THE SPEED OF SOUND IS 340 M/S. FIND THE SPEED OF THE TRAIN AND THE FREQUENCY OF ITS WHISTLE. . Please provide work shown and show what each variable represents thank you so much.
A railroad train is traveling at 28.0 m/s in still air. The frequency of the note...
A railroad train is traveling at 28.0 m/s in still air. The frequency of the note emitted by the train whistle is 256 Hz . The speed of sound is 344 m/s. A) What frequency is heard by a passenger on a train moving in the opposite direction to the first at 18.0 m/sm/s and approaching the first? B) What frequency is heard by a passenger on a train moving in the opposite direction to the first at 18.0 m/sm/s...
A train is traveling at 30.0 m/s relative to the ground in still air. The frequency...
A train is traveling at 30.0 m/s relative to the ground in still air. The frequency of the note emitted by the train whistle is 262 Hz. The speed of sound in air should be taken as 344 m/s. Part AWhat frequency fapproach is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? Express your answer in hertz. Part B What frequency frecede is heard...
Doppler Effect You are waiting at a train station when an approaching express train sounds its...
Doppler Effect You are waiting at a train station when an approaching express train sounds its 400 Hz horn, warning everyone to stand back from the platform as it passes. If you perceive the frequency of the horn to be 425 Hz as the train approaches, how fast must the train be moving towards you? You may assume the speed of sound is 343 m/s.
A train moving at a speed of 40m/s sounds its whistle, which has a frequency of...
A train moving at a speed of 40m/s sounds its whistle, which has a frequency of 500Hz. Determine the frequency heard by a stationary observer as the train approaches the observer. The ambient temperature is 24°C.
QUESTION 6 10 points The frequency of a train whistle is known to be 470 Hz....
QUESTION 6 10 points The frequency of a train whistle is known to be 470 Hz. If the train approaches at 1/16 the speed of sound (-343 m/s at 20°C), what is the frequency heard by a person near the tracks? Answer in units of Hz and round to one decimal place Click Save and Submit to save and submit. Click Save All Answers to save all answers 7 6 8 9 0
6) The sound from the whistle of a truck moving at 17.0 m/s toward a cliff...
6) The sound from the whistle of a truck moving at 17.0 m/s toward a cliff reflects from the cliff and is heard by the driver of the truck. When it is parked at the side of the road, the whistle from the truck produces sound of frequency 2.267 kHz. As observed by the driver of the truck, what is the change in frequency the sound from the whistle due to the reflection? The speed of sound is 343 m/s....
an alert physics student stands besides the tracks as a train rolls slowly past. he notes...
an alert physics student stands besides the tracks as a train rolls slowly past. he notes that the frequency of the train whistle is 442Hz when the train is approaching him and 414Hz when the train is receding from him. using these frequencies, he calculates the speed of the train. what value does he find? (assume the speed of sound in air is 343 m/s)
A train is approaching a signal tower at a
speed of 40 m/s. The train engineer sounds the 1000 Hz whistle and
a switchman in the tower responds by sounding the 1200 Hz siren.
The air is still and the speed of sound is 340 m/s. 9) In Situation
16.4, the wavelength of the train whistle tone reaching the
switchman, in SI units, is given by:
A) 0.32
B) 0.34
C) 0.30
D) 0.36
E) 0.38
A train is approaching...
QUESTION 6 10 points The frequency of a train whistle is known to be 470 Hz. If the train approaches at 1/16 the speed of sound (-343 m/s at 20°C), what is the frequency heard by a person near the tracks? Answer in units of Hz and round to one decimal place Click Save and Submit to save and submit. Click Save All Answers to save all answers 7 6 8 9 0
6) The sound from the whistle of a truck moving at 17.0 m/s toward a cliff reflects from the cliff and is heard by the driver of the truck. When it is parked at the side of the road, the whistle from the truck produces sound of frequency 2.267 kHz. As observed by the driver of the truck, what is the change in frequency the sound from the whistle due to the reflection? The speed of sound is 343 m/s....
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