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Svetllana [295]
2 years ago
10

In air, a sound wave with a frequency of 196 hz has a wavelength of about 1.76 meters. what is the wavelength of a wave if the f

requency is increased to 784 hz?
SAT
1 answer:
Aloiza [94]2 years ago
3 0

The wavelength of the sound wave if the frequency is increased to the given value is 0.44m.

Given the data in the question;

  • Frequency of sound wave a; f_a = 196Hz = 196s^{-1}
  • Wavelength of sound wave a; \lambda _a = 1.76m

Speed of sound wave; v =\ ?

  • Frequency of sound wave b; f_b = 784Hz = 784s^{-1}

Wavelength of sound wave b; \lambda _b = ?

<h3>Wavelength</h3>

Wavelength is simply the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.

It is expressed as;

\lambda = \frac{v}{f}

Where v is velocity and f is frequency.

First, we calculate the velocity of the sound wave in air from sound wave a.

\lambda = \frac{v}{f}\\ \\1.76m= \frac{v}{196s^{-1}}\\\\v = 1.76m * 196s^{-1}\\\\v = 344.96m/s

Now, we determine the wavelength of sound wave b using the velocity of sound wave in air calculated above.

\lambda = \frac{v}{f}\\ \\\lambda = \frac{344.96m/s}{784s^{-1}}\\\\\lambda = 0.44m

Therefore, the wavelength of the sound wave if the frequency is increased to the given value is 0.44m.

Learn more about wavelength: brainly.com/question/27120701

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