   Chapter 13, Problem 64AP

Chapter
Section
Textbook Problem

A certain tuning fork vibrates at a frequency of 196 Hz while each tip of its two prongs has an amplitude of 0.850 mm. (a) What is the period of this motion? (b) Find the wavelength of the sound produced by the vibrating fork, taking the speed of sound in air to be 343 m/s.

(a)

To determine
The period of the motion.

Explanation

Given info: The frequency of the fork is 196Hz . The amplitude of the tips of two prongs is 0.850mm .

The period can be defined as the reciprocal of frequency.

T=1f

• T is the period
• f is the frequency

Substitute 196Hz for f to find T

(b)

To determine
The wavelength of the sound produced by the vibrating fork.

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