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

Question

Quizplus · Accepted Answer

The wavelength of the sound can be found using the formula for the speed of sound, $v = f\lambda$, where $v$ is the speed of sound in air (344 m/s), $f$ is the frequency of the sound (700 Hz), and $\lambda$ is the wavelength we need to find. Rearranging the formula to solve for $\lambda$, we get $\lambda = \frac{v}{f}$. Plugging in the given values, $\lambda = \frac{344 \, \text{m/s}}{700 \, \text{Hz}} = 0.49 \, \text{m}$.

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