1. A favorite radio station is located on the dial at 100 MHz. What is the wavelength of the radio waves emitted from the radio station?

2. Two waves are traveling on a string. The directions and amplitude of each wave is shown in the figure. When the two waves meet, what will be the amplitude of the resulting wave?

3. A sound from a moving object changes frequency as it passes you. What is this phenomenon called?

4. Which of the following EMF waves has the longest wavelength?

5. A wave of green light (λ = 510 nm) enters a block of material. The wavelength of light within the material is 638 nm. What is the index of refraction of the material?

6. [For Physics C Students Only] Which of the following will produce a wave of light?

7. A wave has a frequency of 100 Hz. What is the period of the wave?

8. The highest sound that a human can hear has a wavelength of 17.2 cm. What is the frequency of this wave?

9. [For Physics C Students Only]. Which of Maxwell’s equations represents Faraday’s law, i.e., a changing magnetic flux through a loop of wire induces an electromagnetic field (EMF)?

10. A 440-Hz and a 320-Hz tuning fork are struck simultaneously. What is the beat frequency that you hear?

11. A wave has a frequency of 100 Hz and a wavelength of 1 m. What is the velocity of the wave?

12. Which of the following is an example of a longitudinal wave?

13. A tsunami wave travels at 720 km/h and has a period of 10 min. What is the wavelength of the wave?

14. A tsunami wave travels at 720 km/h and has a period of 10 min. What is the wavelength of the wave?

15. What will be the frequency of the third harmonic in an organ pipe (closed at one end) if the pipe is 3 m long?

16. Which of the following EMF waves has the longest wavelength?

17. A light wave travels from a vacuum into a piece of glass with an index of refraction of 1.5. What is the speed of the wave inside the glass?

18. You have an open tube with a length of 0.5 m. What is the fundamental frequency that can be played in that tube at 20°C?

19. Two waves are traveling on a string. The directions and amplitude of each wave is shown in the figure. When the two waves meet, what will be the amplitude of the resulting wave?

20. A thin film of soap (n = 1.5) is surrounded by air on both sides. A 600-nm beam of light strikes it perpendicular to the surface of the film. What must be the minimum thickness of the soap film to cause constructive interference?

21. A light wave travels from a vacuum into a piece of glass with an index of refraction of 1.5. What is the speed of the wave inside the glass?

22. Monochromatic light of wavelength 500 nm passes through a 5-μm slit and produces an interference pattern on a screen. At what angle from the slit would you find the fifth spot from the center?

23. A jackhammer operator wears a set of protective headphones. Through the headphones, a sound wave is broadcast that is 180° out of phase with the jackhammer sound wave. The result is that he does not hear the sound of the jackhammer. The two sound waves are an example of which of the following?

24. A 0.5-m tube is placed in a bucket of water. The tube can be moved up and down to vary the length of the column of air inside. The temperature of both the water and air is 20°C. A 440-Hz tuning fork is struck and placed over the mouth of the tube. The tube is moved up and down until the first resonance can be heard. What is the length of the column of air inside the tube when this happens?

25. The amplitude of a wave is represented by which of the following distances?