Two tuning forks are generating sounds of wavelengths 33.7 cm and 31.27 cm. How many beats are produced each second by the two tuning forks? The speed of sound is 344 m/s. (1 point)
135
52
25
80

Question

04-01-2019
Physics

contestada

Two tuning forks are generating sounds of wavelengths 33.7 cm and 31.27 cm. How many beats are produced each second by the two tuning forks? The speed of sound is 344 m/s. (1 point)
135
52
25
80

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AL2006 AL2006 · Answer 1 · 2019-01-04T01:20:53+01:00

When you mix two waves, there are two beats produced. The frequencies of the beats are (the sum) and (the difference) of the frequencies of the two original waves. So we have to find the frequencies of these two forks.

Frequency = (speed) / (wavelength)

Fork #1: Frequency = (344 m/s) / (0.337 m) = 1020.8 Hz

Fork #2: Frequency = (344 m/s) / (0.3127 m) = 1100.1 Hz

The two beat frequencies are 2120.9 Hz and 79.3 Hz.

From the choices allowed, the one they want you to pick is 80 Hz .

Two tuning forks are generating sounds of wavelengths 33.7 cm and 31.27 cm. How many beats are produced each second by the two tuning forks? The speed of sound is 344 m/s. (1 point) 135 52 25 80

Respuesta :

Otras preguntas

Two tuning forks are generating sounds of wavelengths 33.7 cm and 31.27 cm. How many beats are produced each second by the two tuning forks? The speed of sound is 344 m/s. (1 point)
135
52
25
80