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You have three tuning forks, A, B, and C. Fork B has a frequency of 421...

You have three tuning forks, A, B, and C. Fork B has a frequency of 421 Hz; when A and B are sounded together, a beat frequency of 1 Hz is heard. When B and C are sounded together, the beat frequency is 8 Hz. What are the possible frequencies of A?

lower frequency Hz
upper frequency Hz


What are the possible frequencies of fork C?

lower frequency Hz
upper frequency Hz


What beat frequencies are possible when A and C are sounded together?

lower frequency Hz
upper frequency Hz
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