When a 400HZ tuning fork is played with a mystery frequency, 7 beats per second are heard. When a 410HZ tuning fork is played with the same mystery frequency, 3 beats per second are heard. What is the mystery frequency?

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When a 400HZ tuning fork is played with a mystery frequency, 7 beats per second are
heard. When a 41OHZ tuning fork is played with the same mystery frequency, 3 beats per
second are heard. What is the mystery frequency?
Transcribed Image Text:When a 400HZ tuning fork is played with a mystery frequency, 7 beats per second are heard. When a 41OHZ tuning fork is played with the same mystery frequency, 3 beats per second are heard. What is the mystery frequency?
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