Mastering Physics Solutions: A Vibrating String

Mastering Physics Solutions: A Vibrating String

On December 19, 2011, in Chapter 14: Sound, by Mastering Physics Solutions

A Vibrating String

Part A = The wavelength doubles but the wave speed is unchanged.
Part B = Both wavelength and wave speed are unchanged.

Solutions Below:

An oscillator creates periodic waves on a stretched string.

Part A

If the period of the oscillator doubles, what happens to the wavelength and wave speed?

A. The wavelength is unchanged but the wave speed doubles.
B. The wavelength doubles but the wave speed is unchanged.
C. The wavelength is halved but the wave speed is unchanged.

B. The wavelength doubles but the wave speed is unchanged.

Part B

If the amplitude of the oscillator doubles, what happens to the wavelength and wave speed?

A. The wavelength doubles but the wave speed is unchanged.
B. Both wavelength and wave speed are unchanged.
C. The wavelength is unchanged but the wave speed doubles.

B. Both wavelength and wave speed are unchanged.

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