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. Part A 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. Express your answer numerically in meters per second using three significant figures. ► View Available Hint(s) Up = Submit D ΫΠΙ ΑΣΦ ? m/s

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. Part A 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. Express your answer numerically in meters per second using three significant figures. ► View Available Hint(s) Up = Submit D ΫΠΙ ΑΣΦ ? m/s

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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I ran track in high school. Sometimes spectators would time the races from the stands. Let's say that the spectator is a distance, d, from the starter. The spectator (erroneously) starts their timer when they hear the sound from the starting gun. They should start the timer when they see the smoke from the starting gun.Who can calculate the timing error Δt in terms of d, the speed of sound (vs) and the speed of light (c)? I calculated 6.7 x 10^-7, with speed of sound = 343 m/s and speed of light = c. I just wanted to confirm if I was correct. I used x = x0 + 1/2 (v0 +v)(t).
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