Equations:

1.  What are the SI units used for:

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a.  Wavelength?

b.  Period?

c.  Frequency?

d.  Wave speed?

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2.  Order the following types of waves from lowest to highest frequency: visible light, gamma rays, x-rays, infrared waves, ultraviolet rays, microwaves, and radio waves.

3.  Order the following types of waves from shortest to longest wavelength: visible light, gamma rays, x-rays, infrared waves, ultraviolet rays, microwaves, and radio waves.

4.  Determine the frequency of:

a.  A ball bouncing 50 times in 38 s

b.  A tuning fork which completes 2048 cycles in 8 s

c.  An electric jigsaw making 3200 slices per minute

5.  Determine the period of:

a.  A pendulum swinging back and forth exactly 40 times in 30 s

b.  A light wave with a frequency of 5.5 x 1014 Hz

6.  Calculate the wavelength of violet light with a frequency of 750 x 1012 Hz.

7.  Calculate the frequency of yellow light with a wavelength of 580 x 10–9 m.

8.  Calculate the wavelength of red light with a frequency of 460 x 1012 Hz.

9.  Calculate the frequency of green light with a wavelength of 530 x 10–9 m.

10.  The waves used by a microwave oven to cook food have a frequency of 2.45 gigahertz (2.45 x109 Hz). Calculate the wavelength of this type of wave.

11.  A radio station has a frequency of 90.9 megahertz (9.09 x 107 Hz). What is the wavelength of the radio waves the station emits from its radio tower?

12.  An x-ray has a wavelength of 5 nanometers (5.0 x 10-9 m). What is the frequency of x-rays?

13.  The ultraviolet rays that cause sunburn are called UV-B rays. They have a wavelength of approximately 300 nanometers (3.0 x 10-7 m). What is the frequency of a UV-B ray?

14.  Infrared waves from the sun are what make our skin feel warm on a sunny day. If an infrared wave has a frequency of 3.0 x 1012 Hz, what is its wavelength?

15.  The wavelength of water in a ripple tank is 0.085 m. If the wave frequency is 3.5 Hz, what is its speed?

16.  The distance between successive crests in a series of water waves is 5.0 m and the crest travels 10 m in 5.5 s. What is the frequency of the wave?

17.  It is 24 m from trough to trough in a system of water waves. If 10 waves pass a given point each minute, determine the speed of the waves.

18.  The period of a sound wave from a piano is 1.25 x 10-3 s. If the speed of the wave in air is 340 m/s, what is the wavelength?

19.  A source with a frequency of 40 H produces water waves that have a wavelength of 1.5 cm. What is the speed of the wave?

20.  A wave in a rope travels at a speed of 4.5 m/s. If the wavelength is 2.6 m, what is the period of the wave?

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