Waves and Sound 1

The particles of the medium are in periodic motion parallel to the direction of propagation of the energy. Which of the following terms is defined by the statement above?

• longitudinal

• torsional

• transverse

• none of the above

A transverse wave has an amplitude of 0.9 m. What is the vertical distance between the top of the crest and the bottom of the trough?

• 0.9 m

• 1.2 m

• 1.8 m

• 2.4 m

For a transverse wave, one wavelength can be measured:

• from one crest to the next.

• from one trough to the next.

• from the beginning of one crest to the end of the adjacent trough.

• all of the above.

A sound wave has a wavelength 0.800 m and a speed of 0.36 km/s. The frequency of the sound wave is:

• 900 Hz

• 450 Hz

• 0.90 Hz

• 0.45 Hz

When a crest travelling in one direction on a rope meets a crest travelling in the opposite direction, the result is:

• a standing wave.

• a loop.

• constructive interference.

• destructive interference.

Waves of wavelength 24 cm and amplitude 3.0 cm are used to create a standing wave. The distance from one node to the next in the pattern is:

• 3.0 cm

• 6.0 cm

• 12 cm

• 24 cm

The number of seconds per cycle.

• period

• frequency

• amplitude

• wavelength

What is the speed of a wave with a frequency of 1.5 x 10^5 Hz and a wavelength of 3000 m?

• 4.5 x 10^8 m/s

• 4.5 x 10^5 m/s

• 4.5 x 10^3 m/s

• 4.5 x 10^2 m/s

Which component is labeled as 'C' in the diagram?

• Amplitude

• Crest

• Antinode

• Node

What is the velocity of a tuning fork with an amplitude of 0.25 cm and a frequency of 150 Hz?

• 150 m/s

• 75 m/s

• 250 m/s

• 300 m/s