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A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed...
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?
Please show Each Formula and Each Step used to obtain the answer. Thanks A train blows...
Please show Each Formula and Each Step used to obtain the answer. Thanks A train blows its horn as it approaches a crossing. The train engineer observes a frequency of 118 Hz and a stationary observer observes a frequency of 128 Hz. What is the speed of the train? Use the speed of sound as 340m/sec.
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 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 47 dB 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 43 m from the train? Treat the horn as a
point source and neglect any absorption of sound by the air.
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.
A commuter train passes a passenger platform at a constant speed of 41.7 m/s. The train...
A commuter train passes a passenger platform at a constant speed of 41.7 m/s. The train horn is sounded at its characteristic frequency of 350 Hz. (a) What overall change in frequency is detected by a person on the platform as the train moves from approaching to receding? (Indicate whether the frequency increases of decreases with the sign of your answer.) Hz (b) What wavelength is detected by a person on the platform as the train approaches?
A commuter train passes a passenger platform at a constant speed of 37.5 m/s. The train...
A commuter train passes a passenger platform at a constant speed of 37.5 m/s. The train horn is sounded at its characteristic frequency of 320 Hz. (a) What overall change in frequency is detected by a person on the platform as the train moves from approaching to receding? (Indicate whether the frequency increases of decreases with the sign of your answer.) Hz (b) What wavelength is detected by a person on the platform as the train approaches?
A commuter train passes a passenger platform at a constant speed of 35.9 m/s. The train...
A commuter train passes a passenger platform at a constant speed of 35.9 m/s. The train horn is sounded at its characteristic frequency of 340 Hz. (a) What overall change in frequency is detected by a person on the platform as the train moves from approaching to receding? (Indicate whether the frequency increases of decreases with the sign of your answer.) Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 100%. Hz (b) What...
7)A train sounds its horn as it approaches an intersection. The horn can just be heard...
7)A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 60 dB by an observer 10 km away. (a) What is the average power generated by the horn? Answer must be in W (b) What intensity level of the horn's sound is observed by someone waiting at an intersection 54 m from the train? Treat the horn as a point source and neglect any absorption of sound by the air....
A train is moving past a crossing where cars are waiting for it to pass. While...
A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver of the lead car becomes sleepy and rests his head on the steering wheel, unintentionally activating the car's horn. A passenger in the back of the train hears the horn's sound at a frequency of 440 Hz and a passenger in the front hears it at 415 Hz. Find the train's speed and the horn's frequency, assuming the sound travels along...
A train sounds its horn as it approaches an intersection. The
horn can just be heard at a level of 47 dB 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 43 m from the train? Treat the horn as a
point source and neglect any absorption of sound by the air.
A commuter train passes a passenger platform at a constant speed of 41.7 m/s. The train horn is sounded at its characteristic frequency of 350 Hz. (a) What overall change in frequency is detected by a person on the platform as the train moves from approaching to receding? (Indicate whether the frequency increases of decreases with the sign of your answer.) Hz (b) What wavelength is detected by a person on the platform as the train approaches?
A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver of the lead car becomes sleepy and rests his head on the steering wheel, unintentionally activating the car's horn. A passenger in the back of the train hears the horn's sound at a frequency of 440 Hz and a passenger in the front hears it at 415 Hz. Find the train's speed and the horn's frequency, assuming the sound travels along...
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