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A tuning fork of natural frequency 264 Hz sits on a table at
the front of a room. At the back of the room, two tuning
forks, one of natural frequency 260 Hz and one of 420 Hz
are initially silent, but when the tuning fork at the front of
the room is set into vibration, the 260-Hz fork sponta-
neously begins to vibrate but the 420-Hz fork does not.
Explain.
the

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