(3) A harmonica makes sounds when a reed inside of it vibrates back and forth. We can consider this to the same as a string with mass 16.5g that is fixed at both ends. The reed is experiencing 639N of tension. (a) This particular harmonica is in the key of D# and it can emit as a fundamental frequency f = 311.13H2. What is the length of the reed? (b) What is the n 3 harmonic for this reed?
(3) A harmonica makes sounds when a reed inside of it vibrates back and forth. We can consider this to the same as a string with mass 16.5g that is fixed at both ends. The reed is experiencing 639N of tension. (a) This particular harmonica is in the key of D# and it can emit as a fundamental frequency f = 311.13H2. What is the length of the reed? (b) What is the n 3 harmonic for this reed?
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Transcribed Image Text:(3) A harmonica makes sounds when a reed inside of it vibrates back and forth. We can
consider this to the same as a string with mass 16.5g that is fixed at both ends. The reed is
experiencing 639N of tension.
(a) This particular harmonica is in the key of D# and it can emit as a fundamental
frequency f = 311.13H z. What is the length of the reed?
(b) What is the n =
(c) A person decides to produce the fundamental frequency on the harmonica in a room
20°C while rolling around in their favorite chair at 8.19m/s. They hear the echo of
their playing off the wall that they are moving away from. What is the frequency of the echo
heard by the harmonica player?
(d) When an observer is 6.79m away from the harmonica player, the sound intensity level
is 86.6dB. What is the sound intensity level of the music when the observer is 41.6m away
from the harmonica player?
3 harmonic for this reed?
at T
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