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DiKsa [7]
3 years ago
6

when you strike two tuning forks simultaneously you hear three beats per second. the frequency of the first tuning fork is 440 h

z. what is the frequency of the second tuning fork?
Physics
1 answer:
s344n2d4d5 [400]3 years ago
4 0

Answer:

We have two possible values for the second tuning fork

443Hz and 337Hz

Explanation:

When two waves of slightly different frequency interfere, they produce beats and the frequency of the beats (fb) is:

f_{b}=\mid f_{1}-f_{2}\mid

with f1 the frequency of the first tuning fork and f2 the frequency of the second tuning fork, so we should solve

3=\440-f_{2}\mid

note that it is the absolute vale of the rest between f1 and f2 so we have two equations and two possible values:

3=440-f_{2}

f_{2}=337Hz

and

-3=440-f_{2}

f_{2}=443Hz

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