Question 1

A stone is dropped into a pond, creating ripples that move outward from the center. What is being transported from the center to the sides?

Accepted Answer

Energy from the disturbance

Question 2

Which of the following best describes a transverse wave?

Accepted Answer

The disturbance is perpendicular to the direction of propagation.

Question 3

A sound wave has a frequency of 500 Hz. What is the period of vibration of the air molecules due to the sound wave?

Accepted Answer

$$0.002\ \mathrm{s}$$

Question 4

Which of the following is NOT a characteristic of a mechanical wave?

Accepted Answer

It can travel through a vacuum.

Question 5

A wave on water has a wavelength of $$10\ \mathrm{m}$$ and the time between crests is $$0.5\ \mathrm{s}. $$What is the speed of the wave?

Accepted Answer

$$20\ \mathrm{m/s}$$

Question 6

Which equation correctly relates the speed $$v of a $$wave to its frequency $$f$$ and wavelength $$\lambda$$?

Accepted Answer

$$v = f \lambda$$

Question 7

A guitar string is tuned by increasing its tension. What effect does this have on the speed of transverse waves on the string?

Accepted Answer

The speed increases.

Question 8

Which of the following statements about the frequency of a wave is correct?

Accepted Answer

The frequency of a wave is the same as the frequency of the oscillation that generated it.

Question 9

Which of the following best describes the amplitude of a wave?

Accepted Answer

The distance from the midpoint to the crest or to the trough.

Question 10

A wave equation describes the displacement of points on a wave as a function of both position and time. Which type of mathematical function is typically used for a sinusoidal wave?

Accepted Answer

Sine function

Question 11

A longitudinal wave is traveling through a spring. What is the direction of the disturbance relative to the direction of wave propagation?

Accepted Answer

Parallel

Question 12

If the period $$T of a $$wave is $$0.25\ \mathrm{s}$$, what is its frequency $$f$$?

Accepted Answer

$$f = 4\ \mathrm{Hz}$$

Question 13

A wave travels along a rope with mass per unit length $$\mu$$ and tension $$T. $$What is the correct formula for the speed $$v of $$the wave?

Accepted Answer

$$v = \sqrt{T/\mu}$$

Question 14

Which of the following real-world scenarios is an example of a longitudinal wave?

Accepted Answer

Sound traveling through air

Question 15

A wave is described by the equation $$y(x, t) = A \sin(kx - \omega t). $$What does the term $$\omega$$ represent?

Accepted Answer

Angular frequency

Question 16

If a wave is moving to the right, which of the following forms of the wave equation correctly describes its motion?

Accepted Answer

$$y(x, t) = A \sin(kx - \omega t)$$

Question 17

A wave on a string has a frequency of $$50\ \mathrm{Hz}$$ and a wavelength of $$0.4\ \mathrm{m}. $$What is its speed?

Accepted Answer

$$20\ \mathrm{m/s}$$

Question 18

Which of the following statements about wave motion is correct?

Accepted Answer

Energy is transported by the wave, but particles oscillate around their equilibrium positions.

Question 19

A wave has a crest-to-crest distance of $$2\ \mathrm{m}$$ and passes a fixed point every $$0.5\ \mathrm{s}. $$What is its speed?

Accepted Answer

$$4\ \mathrm{m/s}$$

Question 20

Which of the following is a correct statement about the relationship between simple harmonic oscillators (SHO) and wave motion?

Accepted Answer

All waves are generated by oscillations, and their frequency matches the oscillation frequency.

Mechanical Waves and Sound: Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드