Two loudspeakers in a 20?C room emit 670 Hz sound waves along the x -axis. A) If

Question

Two loudspeakers in a 20?C room emit 670 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 perfectly destructive?

Express your answer to two significant figures and include the appropriate units.

B)

If the speakers are out of phase, what is the smallest distance between the speakers for which the interference of the sound waves is maximum constructive?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

PART A) Wavelength = V / f = 343 m/s / 670 hz = 0.511940298 m / 2 = 0.255970149 m ============ANSWER)

PART B) distance = 0.255970149 m ==============ANSWER)

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