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Question
Find the frequency of a tuning fork that takes $2.50 \times 10^{-3} \textrm{ s}$ to complete one oscillation.
Question by OpenStax is licensed under CC BY 4.0.
Final Answer

$400 \textrm{ Hz}$

Solution Video

OpenStax College Physics Solution, Chapter 16, Problem 9 (Problems & Exercises) (0:20)

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Video Transcript
This is College Physics Answers with Shaun Dychko. Frequency is the reciprocal of period, so we're told that the tuning fork takes two and a half milliseconds or two and a half times ten to the minus three seconds to do one oscillation. So one divided by that gives 400 Hertz as the frequency.