WAVES

The diagram represents two pulses traveling toward each other. Which represents what happens when the pulses meet?

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What is the frequency (in Hz) of a wave that has made a wavelength of 0.80 m and is traveling at 2.0 m/s?

• 1.6

• 2.8

• 1.6

• 2.5

What is the number of wave cycles present in the graph?

• 1.5

• 2

• 2.5

• 3

It takes 20 seconds for a swing to complete one oscillation. What is its frequency?

• 0.05 Hz

• 0.05 seconds

• 20 Hz

• 20 Hz

Vibrations in a ​ (a)   wave are perpendicular to the direction of wave motion AND Vibrations in a ​ (b)   wave are always parallel to the direction of wave motion.​

• TRANSVERSE
• LONGITUDINAL

A musical note has a frequency of 643 Hz. If the wavelength of the note is 0.476 m, what is the speed of the sound of that note?

• 664 m/s

• 568 m/s

• 491 m/s

• 306 m/s

A speaker vibrates at a frequency of 350 Hz. What is its period?

• 0.0029 Hz

• 0.0029 N

• 0.0029 N/m

• 0.0029 s

The figure shows a spring with a wave traveling through it.

Which type of wave is illustrated?

• transverse

• longitudinal

• sound

• electromagnetic

A periodic wave is produced by a vibrating tuning fork. The amplitude of the wave would be smaller if the tuning fork were

• struck more softly

• struck harder

• replaced with a lower frequency tuning fork

• replaced with a higher frequency tuning fork

What is the amplitude of the oscillator in the graph?

• 2M

• 4M

• 8M

• 10M