8. Waves and Sound self-eval q's (3rd exam)

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Last updated 7:47 PM on 9/9/26
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12 Terms

1
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The power of sound (as judged by the ear. is represented by:

amplitude

2
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Matter that is vibrating produces:

sound

3
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<p><span>Which of the following diagrams represents the softest sound?</span></p>

Which of the following diagrams represents the softest sound?

c

4
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<p><span>A and B, respectively, are:</span></p>

A and B, respectively, are:

amplitude and wavelength

5
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Given the air temperature 21oC, calculate the speed of sound:

343

6
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What is the speed of sound at 45oC?

357

7
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What is the velocity of a sound whose wavelength is 3.0 cm and whose frequency is 1235 Hz?

37

8
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What is the velocity if the wavelength is 4 meters, and the frequency is 282.5 Hz?

1130

9
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What is the wavelength of a sound resonating in a closed tube 10 cm long?

40

10
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What is the wavelength of a sound resonating in a closed tube 105 cm long?

420

11
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A person shoots a gun near a reflecting surface. The same person hears the echo 7 seconds after the shot. If the temperature is 40oC, how far is the person from the reflecting surface?

1239

12
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A person is standing near a reflecting surface. He shouts, and hears an echo 10 seconds later. If the temperature is 25oC how far is he from the surface?

1725