PHYS 2: LG 1.4-1.6 Wave Equation, Reflection & Refraction

When the particles of a medium are vibrating at right angles to the direction of energy transport, then the wave is a _______ wave.

• sound

• transverse

• standing

• longitudinal

A periodic wave is produced on a stretched string. Which one of the following properties is not related to the speed of the wave?

• Frequency

• Amplitude

• Tension in the string

• Wavelength

Which one of the following waves is purely longitudinal?

• microwaves traveling through air

• sound waves in air

• radio waves traveling through vacuum

• waves on a plucked violin string

What is the amplitude of the wave in the diagram below?

• 0.030 m

• 0.050 m

• 0.060 m

• 0.080 m

What is the frequency of a wave that has a speed of 0.4 m/s and a wavelength of 0.020 meter?

• 0.008 Hz

• 0.05 Hz

• 10 Hz

• 20 Hz

A pendulum makes exactly 40.0 vibrations in 20.0 s. Its period is _________.

• 2.00 Hz

• 2.00 s

• 0.500 s

• 8.00 x10² Hz

If the frequency of a wave is doubled and if the speed remains constant, its wavelength is _________.

• quartered

• halved

• unchanged

• doubled

Which of the following is the speed of a wave traveling with a wavelength λ, frequency f, and period T?

• v = λ/f

• v = λ/T

• v = f/λ

• v = f/T

The frequency of a wave increases when the speed remains the same. What happens to the distance between two consecutive crests?

• It increases.

• It decreases.

• Stays unchanged.

• It decreases first and then increases.

If you have to wait 10 s between the arrival of the flash and the thunder, you know that the lightning bolt occurred ________ away.

• 0.2 miles

• 2 miles

• 5 miles

• 10 miles