The frequency of the middle B note on a piano is 493.88 Hz. What is the wavelength of this note in centimeters? The speed of sound in air is 343.06 m/s. quizle

Respuesta :

mac205

Explanation:

using

v = f × lambda

lambda = v/f

v = 343.06m/s to cm/s

343.06 × 100

34306.00cm/s

f = 493.88 Hz

lambda = (34306/493.88) cm/s÷Hz

lambda = 69.46cm

Here we know a frequency, and from this we want to find the wavelength of a soundwave with that frequency.

We will see that the solution is: Wavelength = 69.46cm

The equation we need to use is:

  • v = λ*f
  • Where:
  • v = velocity
  • λ = wavelength
  • f = frequency.

In this particular case we know that the frequency is:

f = 493.88 Hz

And the velocity of the wave is:

v = 343.06 m/s

We can replace these in the general equation:

343.06 m/s = λ*(493.88 Hz)

(343.06 m/s)/(493.88 Hz) = λ

0.6946 m = λ

And we want to write this in centimeters, remember that:

1m = 100cm

Then:

λ = 0.6946 m = 0.6946*(100cm) = 69.46cm

If you want to learn more, you can read:

https://brainly.com/question/12924624