A train whistle is heard at 300 Hz as the train approaches town. The train cuts...
A train whistle is heard at 300 Hz as the train approaches town. The train cuts its speed in half as it nears the station, and the sound of the whistle is then 290 Hz.
What is the speed of the train after slowing down?
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A train whistle is heard at 300 Hz as the train approaches town.
The train cuts...
Item 4 Part A Constants | Periodic Table A train whistle is heard at 350 Hz...
Item 4 Part A Constants | Periodic Table A train whistle is heard at 350 Hz as the train approaches town. The train cuts its speed in half as it nears the station and the sound of the whistle is then 340 H What is the speed of the train before slowing down? Express your answer to two significant figures and include the appropriate units. Value Units Submit Part B What is the speed of the train after slowing down?...
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.
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
A train: A enters a train station with constant speed of .00 m/s while another train...
A train: A enters a train station with constant speed of .00 m/s while another train B leaves the train station with constant speed of 4.00 m/s. At a moment they are both at the same distance of 1 km from the train station they whistle two identical sounds of 400. Hz with acoustic power of 70.0 W each. A passenger standing on the station platform. No wind is blowing. (a) What is the frequency of the sound from A...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
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 commuter train blows its 200 Hz horn as it approaches a crossing. The speed of...
A commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 330 m/s. (a) An observer waiting at the crossing receives a frequency of 210 Hz. What is the speed of the train (in m/s)? (b) What frequency (in Hz) does the observer receive as the train moves away?
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.
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed...
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 337 m/s. (a) An observer waiting at the crossing receives a frequency of 221 Hz. What is the speed of the train? m/s (b) What frequency does the observer receive as the train moves away? Hz
a train sounds its horn as it approaches an intersection. The horn can just be heard...
a train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 40dB by an observer 10 km away. a) what is the average power generated by the horn? b) what intensity level of the horn's sound is observed by someone waiting at an intersection 58m from the train? Treat the horn as a point source and neglect any absorption of sound by the air.
Item 4 Part A Constants | Periodic Table A train whistle is heard at 350 Hz as the train approaches town. The train cuts its speed in half as it nears the station and the sound of the whistle is then 340 H What is the speed of the train before slowing down? Express your answer to two significant figures and include the appropriate units. Value Units Submit Part B What is the speed of the train after slowing down?...
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
A train: A enters a train station with constant speed of .00 m/s while another train B leaves the train station with constant speed of 4.00 m/s. At a moment they are both at the same distance of 1 km from the train station they whistle two identical sounds of 400. Hz with acoustic power of 70.0 W each. A passenger standing on the station platform. No wind is blowing. (a) What is the frequency of the sound from A...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 337 m/s. (a) An observer waiting at the crossing receives a frequency of 221 Hz. What is the speed of the train? m/s (b) What frequency does the observer receive as the train moves away? Hz
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