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17.2 Exercise 3

Avg difficulty 2.5

A teacher wants to demonstrate that the speed of sound is not a constant value. Considering her regular classroom voice as the control, which of the following will increase the speed of sound leaving her mouth?

  1. Submerge her mouth underwater and speak at the same volume.
  2. Increase the temperature of the room and speak at the same volume.
  3. Increase the pitch of her voice and speak at the same volume.
  1. I only
  2. I and II only
  3. I, II and III
  4. II and III
  5. III only

OpenStax College Physics 2e, 17.2 Speed of Sound, Frequency, and Wavelength, exercise 3

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.