Physics Tutorial: Frequency and Period of a Wave - The Physics Classroom
https://www.physicsclassroom.com/class/waves/Lesson-2/Frequency-and-Period-of-a-Wave
WEBThe rate of the hand's motion would be 2 cycles/second. The first coil, being attached to the hand, in turn would vibrate at a rate of 2 cycles/second. The second coil, being attached to the first coil, would vibrate at a rate of 2 cycles/second. The third coil, being attached to the second coil, would vibrate at a rate of 2 cycles/second.
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