Ryan is standing in front of two side by side speakers as shown. The speakers emit sound in phase with frequency 785 Hz. Speaker 1 is moved to the left until Ryan hears no sound. How far (in metres) was speaker 1 moved? You may assume the speed of sound in air is 343 m/s.

Ryan is standing in front of two side by side speakers as shown. The speakers emit sound in phase with frequency 785 Hz. Speaker 1 is moved to the left until Ryan hears no sound. How far (in metres) was speaker 1 moved? You may assume the speed of sound in air is 343 m/s.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter35: Diffraction And Interference

Section35.2: Sound Wave Interference Revisited

Problem 35.3CE

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Concept explainers

Wave Motion

A wave motion is defined as the propagation of disturbances or transfer of energy and momentum from the state of rest or equilibrium to another point in a medium without any actual transfer of matter between them. In a simple explanation, it is the propagation of energy through a medium that is produced due to the repeated vibrations of the particles. Common things we see day to day like waves on water oscillation of a pendulum or bell, light wave, and all the subatomic particles exhibiting wavelike properties. The propagation of waves depends on the medium and their properties. The wave function is the disturbance that produces waves as a function of time. This disturbance oscillates periodically with a fixed frequency and wavelength. There are linear wave motion and non-linear wave motion based on their propagation, motion, and time period where linear wave motion is like sinusoidal waves and non-linear wave motion like a wave motion that gets interrupted in the middle of their propagation.

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Ryan is standing in front of two side by side speakers as shown. The speakers emit
sound in phase with frequency 785 Hz. Speaker 1 is moved to the left until Ryan
hears no sound. How far (in metres) was speaker 1 moved?
You may assume the speed of sound in air is 343 m/s.
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