physics

Speakers A and B are vibrating in phase. They are directly facing each other, are 7.4 m apart, and are each playing a 72.0 Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interference occurs. What are the distances of these three points from speaker A?
m (nearest)
m (middle)
m (farthest)


Calculate wavelength. When the difference in distances from each speaker are multiples of wavelength, construtcive interference occurs. For instance, if the wavelenght were 1 meter, then when distance A (speaker A to the point) = distance B -+ n Lambda

n= 0, 1, 2, ... constructive interference occurs. The easy solution is in the center, n=0. I suspect you will find a +- 1 solution.

  1. 👍 0
  2. 👎 0
  3. 👁 269
asked by Coreen

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    suppose that the separation between speakers A and B is 5.80 m and the speakers are vibrating in phase. They are playing identical 135 Hz tones, and the speed of sound is 343 m/s. What is the largest possible distance between

    asked by Mary on May 1, 2007
  2. Physics

    Two identical speakers, labeled Speaker 1 and Speaker 2, are playing a tone with a frequency of 175 Hz in phase. The centers of the speakers are located 6.00 m apart. Five observers are standing on a line that is 6.00 m in front

    asked by Jason on November 2, 2019
  3. Physics

    A pair of in-phase stereo speakers is placed side by side, 0.85 m apart. You stand directly in front of one of the speakers, 1.1 m from the speaker. What is the lowest frequency that will produce constructive interference at your

    asked by Meder on April 27, 2013
  4. Physics

    A pair of in-phase stereo speakers is placed side by side, 0.85 m apart. You stand directly in front of one of the speakers, 1.2 m from the speaker. What is the lowest frequency that will produce constructive interference at your

    asked by Cooper on November 22, 2011
  5. physics

    Two speakers are separated by distance d1 = 2.40 m and are in phase. You are standing 3.00 m directly in front of one speaker. Each speaker has an output power of 1.20 W. Because the speakers are at different distances, there will

    asked by Anonymous on October 11, 2011
  6. Physics

    An observer is located directly between two speakers located 20 metres apart.Speakers are in phase and both are emitting a sound of 60Hz.How far away from the centre should the observer move to get the first destructive

    asked by Kelly on April 25, 2018
  7. Physics

    An observer is located directly between two speakers, located 20m apart. The speakers are in phase with each other, and both are emitting a sound with a frequency of 60Hz. How far away from the centre should the observer move to

    asked by Robert on April 19, 2018
  8. Physics

    Moe, Larry, and Curly stand in a line with a spacing of d = 1.40m . Larry is 3.00m in front of a pair of stereo speakers 0.800m apart, as shown in the figure(Figure 1) . The speakers produce a single-frequency tone, vibrating in

    asked by Lhaedy on December 11, 2013
  9. physics-optics

    Two speakers are separated by a distance of 3.4 m. A point P is placed at 5.7 m from one of the speakers so that they form a right triangle. If the speed of sound in this situation is 340 m/s and the speakers are in phase, what is

    asked by eliz on April 2, 2017
  10. physics

    Two loudspeakers in a 20°C room emit 629 Hz sound waves along the x-axis. (a) If the speakers are in phase, what is the smallest distance between the speakers for which the interference of the sound waves is destructive? (b) If

    asked by anonymous on February 23, 2010

More Similar Questions