Part I: 1) A shower stall is 2.9 m tall. What is the fundamental frequency (in H

Question

Part I:

1) A shower stall is 2.9 m tall. What is the fundamental frequency (in Hz) for a standing wave in this air column? Assume the shower stall is a column of air that is closed at the ends by the ceiling and floor. Assume the speed of sound is 343 m/s.

2) When analyzing the superposition of two sources with the same wavelength but different frequency, the beat frequency is
a) fbeat = f1 * f2
b)fbeat = f1 * f2
c)fbeat = f1 * f2
d) fbeat = f1 * f2

Part II:

1) Two loudspeakers emit waves with wavelength = 2.0 m. Speaker 2 is 1.0 m in front of speaker 1. What, if anything, can be done to cause constructive interference between the two waves?

Explanation / Answer

1) Fundamental frequency = v/4L

= 343/4 x 2.9 = 29.56 s-1

2) all options are same but I would go for option a) and it should be f1 - f2

Answer option a)

Part II)

option E)

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