Beat frequency problem. Your car simultaneously hears waves from different sourc

Question

Beat frequency problem. Your car simultaneously hears waves from different sources, so it can hear beats from the two speakers. In principle, the easiest way to measure the sound waves is to put a detector between the two speakers; however, in the experiment no detector is used to measure the wave field. Instead the voltages applied to the speakers arc added electronically by the oscilloscope to simulate the true sound waves. Suppose one speaker is driven at 566 Hz and the other at 546 Hz. What is the beat frequency in Hz? The average frequency in Hz? Hz (beat frequency) Hz (average frequency)

Explanation / Answer

f1 = 566 Hz

f2= 546 hz

a) beat frequency = f1- f2 = 566- 546 = 20 hz

b) average frequency = (f1+ f2)/ 2 = (566+546) / 2 = 556 hz

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