A quartz watch contains a crystal oscillator in the formof a block of quartz that
Chapter 18, Problem 69(choose chapter or problem)
A quartz watch contains a crystal oscillator in the formof a block of quartz that vibrates by contracting andexpanding. An electric circuit feeds in energy to maintainthe oscillation and also counts the voltage pulsesto keep time. Two opposite faces of the block, 7.05 mmapart, are antinodes, moving alternately toward eachother and away from each other. The plane halfwaybetween these two faces is a node of the vibration. Thespeed of sound in quartz is equal to 3.70 3 103 m/s.Find the frequency of the vibration.
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