Standing Sound Waves: A string that is 0.15 m long and fixed at both ends is vibrating in its n = 5 harmonic. The sound from this string excites a pipe that is 0.82 m long and open at both ends into its second overtone resonance. What is the distance between a node and an adjacent antinode, in the string? The speed of sound in air is 345 m/s.
A. 15 mm
B. 7.5 mm
C. 23 mm
D. 30 mm
E. 150 mm
Answer: A
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