Respuesta :

We can find the beat frequency using the following formula:

[tex]_{\text{ }}f_{beat}=|f1-f2|[/tex]

A.

Let:

f1 = 341 Hz

f2 = 347 Hz

So:

[tex]_{\text{ }}f_{beat}=|341-347|=|-6|=6Hz_{}[/tex]

B.

Let:

f1 = 1003Hz

f2 = 998Hz

So:

[tex]_{\text{ }}f_{beat}=|1003-998|=|5|=5Hz_{}[/tex]