How fast must a tuning fork oscillate at a frequency of 256 Hz to observe an apparent beat frequency of 4 Hz when reflected from a wall? The speed of sound is constant at 1.33 m/s.
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The beat frequency is the difference between the fork frequency and the apparent frequency observed due to the reflection of sound waves from the wall. Show more…
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A student holds a tuning fork oscillating at 256 Hz. He walks toward a wall at a constant speed of $1.33 \mathrm{~m} / \mathrm{s} .$ (a) What beat frequency does he observe between the tuning fork and its echo? (b) How fast must he walk away from the wall to observe a beat frequency of $5.00 \mathrm{~Hz}$ ?
A student holds a tuning fork oscillating at 256 Hz. He walks toward a wall at a constant speed of 1.33 m/s. (a) What beat frequency does he observe between the tuning fork and its echo? (b) How fast must he walk away from the wall to observe a beat frequency of 5.00 Hz?
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