Standing Sound Waves: A 2.0-g string that is 0.67 m long is under tension. The string vibrates at 700 Hz tone in its third harmonic, and this vibration causes a sound wave. What is the wavelength of the sound? The speed of sound in air is 344 m/s.
A. 0.49
B. 0.55
C. 0.61
D. 0.67
E. 0.45
Answer: A
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