Electronic watches keep accurate time using crystal oscillators. Inside the watch, there is a tiny block of quartz which vibrates. Two opposite faces of the block move alternately toward each other and away from each other. This is a caused by a standing wave in the block. The two opposite faces are at antinodes, and the plane halfway between these two faces is at a node. If the two faces are 5 mm apart and the speed of sound in quartz is 3.72 km/s, find the frequency of the vibration.

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter16: Waves
Section: Chapter Questions
Problem 105P: A cable with a linear density of =0.2 kg/m is hung from telephone poles. The tension in the cable is...
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Electronic watches keep accurate time using crystal oscillators. Inside the watch, there is a
tiny block of quartz which vibrates. Two opposite faces of the block move alternately toward
each other and away from each other. This is a caused by a standing wave in the block. The
two opposite faces are at antinodes, and the plane halfway between these two faces is at a
node. If the two faces are 5 mm apart and the speed of sound in quartz is 3.72 km/s, find the
frequency of the vibration.

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