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Basile [38]
3 years ago
6

Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity when sp

eaker 2 is at the origin and speaker 1 is at x = 0.540 m . If speaker 1 is slowly moved forward, the sound intensity decreases and then increases, reaching another maximum when speaker 1 is at x = 0.870 m.
A) What is the phase difference between the speakers?
B) What is the frequency of the sound? Assume velocity of sound is 340m/s.
Physics
1 answer:
yKpoI14uk [10]3 years ago
8 0

Answer

given,

difference between the two consecutive maximum

λ = 0.870 - 0.540

λ = 0.33 m

speed of sound = 340 m/s

b) frequency of the sound

v = f x λ

340 = f x 0.33

f =\dfrac{340}{0.33}

    f = 1030.3 Hz

a) phase difference

  the expression of phase difference is given by

   \phi = \dfrac{2\pi}{\lambda}\ \delta

   \delta = \Delta x - \lambda

   \delta = 0.540 - 0.33

   \delta = 0.21\ m

now,

   \phi = \dfrac{2\pi}{\lambda}\ \times 0.21

   \phi = \dfrac{2\pi}{0.33}\ \times 0.21

   \phi = 3.99 rad

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