Question

In: Physics

Two speakers that are 16.0m apart produce sound waves of frequency 270Hz in a room where...

Two speakers that are 16.0m apart produce sound waves of frequency 270Hz in a room where the speed of sound is 340m/s . A woman starts out at the midpoint between the two speakers. The room

Solutions

Expert Solution

A)

two speakers are out of phase so that distructive interference occures

B)

interference is a phenomenon in which two waves superpose to form a resultant wave of greater or loweramplitude. Interference usually refers to the interaction of waves that are correlated or coherent with each other, either because they come from the same source or because they have the same or nearly the same frequency.

we add these two waves together, point-by-point, we end up with a new wave that looks pretty much like the original waves but its amplitude is larger. This situation, where the resultant wave is bigger than either of the two original, is called constructive interference.

we add these waves together? When the first wave is up, the second wave is down and the two add to zero. When the first wave is down and the second is up, they again add to zero. In fact, at all points the two waves exactly cancel each other out and there is no wave left! This is the single most amazing aspect of waves. The sum of two waves can be less than either wave, alone, and can even be zero. This is called destructive interference.

C) ? = 340 / 270= 1.259 m


If the waves are ?/2 out of step they will produce a minimum

So she must walk towards one speaker so that the path difference of the waves reaching her one ear is 0.629 m ( ?/2)
D)
Likewise to hear a loud noise the waves must be a full wavelength out of phase. Which means she must move ?/2 = 0.629 m

genius_generous answered 7 months ago
Next > < Previous

Related Solutions

Two speakers spaced a distance 1.5 m apart emit coherent sound waves at a frequency of 680 Hz in all directions. The waves start out in phase with each other.
Two speakers spaced a distance 1.5 m apart emit coherent sound waves at a frequency of 680 Hz in all directions. The waves start out in phase with each other. A listener walks in a circle of radius greater than 1 m centered on the midpoint of the two speakers. At how many points does the listener observe destructive interference? The listener and the speakers are all in the same horizontal plane and the speed of sound is 340 m/s....
Two loudspeakers, 1.1 mm apart, emit sound waves with the same frequency along the positive xx-axis....
Two loudspeakers, 1.1 mm apart, emit sound waves with the same frequency along the positive xx-axis. Victor, standing on the axis to the right of the speakers, hears no sound. As the frequency is slowly tripled, Victor hears the sound go through the sequence loud-soft-loud-soft-loud before becoming quiet again. What was the original sound frequency? Assume room temperature of 20∘C∘C. Express your answer with the appropriate units. please write the answer neatly, another post similar to this one was difficult...
1. The wavelength of sound waves from two speakers is 336.4cm long. a) If a person...
1. The wavelength of sound waves from two speakers is 336.4cm long. a) If a person were standing at the end of the wavelength, what would they hear? Explain. b) What can be said about ∆?/? , the ratio of the path length difference from the two speakers compared to the wavelength of the speakers?
Two speakers 5 m apart, are driven in phase by the same amplifier, at a frequency...
Two speakers 5 m apart, are driven in phase by the same amplifier, at a frequency of 775 Hz. The speed of sound is 340 m/s. An observer starts 5m away from one of the speakers at a point along the perpendicular to the line connecting the two speakers, and moves away from the speakers along that line. a) How much distance separates the second and the third interference minima they hear? b) Do you expect the intensity at the...
Two speakers are facing each other, 4.00 meters apart, in phase and playing a sound with...
Two speakers are facing each other, 4.00 meters apart, in phase and playing a sound with frequency 170HZ. Find the distance from the center point to the nearest point where totally destructive interference occurs.
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers...
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 19 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 29 cm. What is the wavelength of the sound? Express your answer using two significant figures. If the distance between the speakers continues to increase, at what separation will the sound intensity again be a maximum? Express your answer using two significant...
A tuning fork generates sound waves with a frequency of 230 Hz. The waves travel in...
A tuning fork generates sound waves with a frequency of 230 Hz. The waves travel in opposite directions along a hallway, are reflected by walls, and return. The hallway is46.0 m long and the tuning fork is located 14.0 m from one end. What is the phase difference between the reflected waves when they meet at the tuning fork? The speed of sound in air is 343 m/s. (Ans in degrees)
Two speakers spaced emitting identical sound waves in phase with each other of wavelength 1.00 m...
Two speakers spaced emitting identical sound waves in phase with each other of wavelength 1.00 m are spaceced 5.00 m from eachother. At what minimal distance (in m) from one of them should an observer stand to hear almost nothing (the first minimum)(__________)? The first maximum after this minimum (__________)? Second minimum (__________)? Second maximum (__________)? Third minimum (__________)? Third maximum (__________)? How many minima overall can be observed (__________)? How many maxima (__________)?
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears...
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x = 0.500m . If speaker 1 is slowly moved forward, the sound intensity decreases and then increases, reaching another maximum when speaker 1 is at x =0.850m . A)What is the frequency of the sound? Assume vsound =340m/s. B)What is the phase difference between the speakers?
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears...
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x = 0.540m . If speaker 1 is slowly moved forward, the sound intensity decreases and then increases, reaching another maximum when speaker 1 is at x =0.930m . What is the phase difference between the speakers?
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT