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Question 4: A speaker fixed to a moving platform moves toward a wall, emitting a steady sound with a frequency of 230 Hz. A person on the platform right next to the speaker detects the sound waves reflected off the wall and those emitted by the speaker. How fast should the platform move, vp, for the person to detect a beat frequency of 5.00 Hz? Take the speed of sound to be 344 m/s.

Question 4: A speaker fixed to a moving platform moves toward a wall, emitting a steady sound with a frequency of 230 Hz. A person on the platform right next to the speaker detects the sound waves reflected off the wall and those emitted by the speaker. How fast should the platform move, vp, for the person to detect a beat frequency of 5.00 Hz? Take the speed of sound to be 344 m/s.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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C X NYC-Problem-Set-... NYC formula_sheet_... ஆ 05-Interference T NYC-Midterm-Review... BELT PROBLEM Question 4: A speaker fixed to a moving platform moves toward a wall, emitting a steady sound with a frequency of 230 Hz. A person on the platform right next to the speaker detects the sound waves reflected off the wall and those emitted by the speaker. How fast should the platform move, Vp, for the person to detect a beat frequency of 5.00 Hz? Take the speed of sound to be 344 m/s. Question 5: A trumpet player hears 5 beats per second when she plays a note and simultaneously sounds a 440 Hz tuning fork. After pulling her tuning valve out to slightly increase the length of her trumpet, she hears 3 beats per second against the tuning fork. Was her initial frequency 435 Hz or 445 Hz? a. 435 Hz, since the beat frequency did, in fact, decrease. b. 445 Hz, since the beat frequency did, in fact, decrease. C. 445 Hz, because if she was playing above the tuning fork frequency, increasing her frequency would bring her closer to the frequency of the tuning fork, which would decrease the heat
Transcribed Image Text:C X NYC-Problem-Set-... NYC formula_sheet_... ஆ 05-Interference T NYC-Midterm-Review... BELT PROBLEM Question 4: A speaker fixed to a moving platform moves toward a wall, emitting a steady sound with a frequency of 230 Hz. A person on the platform right next to the speaker detects the sound waves reflected off the wall and those emitted by the speaker. How fast should the platform move, Vp, for the person to detect a beat frequency of 5.00 Hz? Take the speed of sound to be 344 m/s. Question 5: A trumpet player hears 5 beats per second when she plays a note and simultaneously sounds a 440 Hz tuning fork. After pulling her tuning valve out to slightly increase the length of her trumpet, she hears 3 beats per second against the tuning fork. Was her initial frequency 435 Hz or 445 Hz? a. 435 Hz, since the beat frequency did, in fact, decrease. b. 445 Hz, since the beat frequency did, in fact, decrease. C. 445 Hz, because if she was playing above the tuning fork frequency, increasing her frequency would bring her closer to the frequency of the tuning fork, which would decrease the heat
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