Waves pt 2

If a guitar string has a fundamental frequency of 500 Hz, name the sixth frequencies at which the string can vibrate.

• 1000 Hz

• 2000 Hz

• 3000 Hz

• 4000 Hz

• 5000 Hz

What is the period of a wave with a frequency of 20 Hz?

• .05 s

• .1 s

• .5 s

• 1 s

• 1.5 s

A transverse wave is traveling through a medium. See diagram below. The particles of the medium are vibrating _____.

• parallel to the line joining AD.

• along the line joining CI.

• at various angles to the line CI.

• perpendicular to the line joining AD.

• along the curve CAEJGBI.

The number of cycles of a periodic wave occurring per unit time is defined as a wave's ____.

• wavelength.

• frequency.

• period.

• amplitude.

A string with a linear density of 4.0 g/m (0.004 kg/m) is under tension of 150 N. What is the speed of the wave?

• 144 m/s

• 156 m/s

• 194 m/s

• 232 m/s

Two wave pulses one with a positive amplitude the other with equal negative amplitude travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?

• It is constructive interference with twice the amplitude

• It is destructive interference with zero amplitude

• It is constructive interference with slightly greater amplitude

• It is constructive interference with the negative amplitude

A node is a point located along the medium where there is always ___.

• a double crest

• a double trough

• constructive interference

• destructive interference

What is the wave speed if the period is 4.0 seconds and the wavelength is 1.8 m?

• 2.2 m/s

• 7.2 m/s

• .45 m/s

• 3.2 m/s

What is a medium of a wave?

• what causes a wave.

• the material through which the wave propagates.

• the deciding factor in whether or not a wave is transmitted or reflected

• the middle part of the wave