Question

Two tuning forks produce sounds of wavelengths of 3.4 meters and 3.3 meters.

Given that the speed of sound in air is 340 m/s, approximately what is the beat frequency produced by these two tuning forks?

Answer 1

Step-by-step explanation:

wavelength, λ = 3.4 m

wavelength, λ' = 3.3 m

Speed, v = 340 m/s

f = v / λ = 340 / 3.4 = 100 Hz

f' = v / λ' = 340 / 3.3 = 103.03 Hz

Frequency of beat, n = f' - f = 103.03 - 100 = 3.03 Hz