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A) Tuning fork 1 has a frequency of 256 Hz and tuning fork 2 has a frequency of 260 Hz, When tuning fork 3 is played along with tuning fork 1 a beat frequency of 2 Hz is heard. When tuning fork 3 is played along with tuning fork 2 a beat frequency of 6 Hz is heard. What is the frequency of tuning fork 3?

B) How can a guitarist use the phenomenon of beats to ensure that her guitar is tune with a second guitar?

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