12.0 Basic Waves

Get The FA: FA12.0.docx (Pandemic)

Get the Practice Problems: Worksheet12.0-Waves.docx (Pandemic)

Solutions to: The Practice Problems (or scroll down)

The FA Solved:

1. What is the frequency of a wave with a period of 0.00150150 s? What is the period of a 100. Hz wave? (666 Hz, 0.0100 s)

2. What is the velocity of a wave that has frequency of 120. Hz and a wavelength of 2.85 m?

(342 m/s)

3. What is the wavelength of a light wave (v = 3.00x10⁸ m/s) with a frequency of 4.50x10¹⁴ Hz?

(6.67x10^-7 m or 667 nm)

4. What is the frequency of a sound wave with a velocity of 343 m/s, and a wavelength of 24.0 cm?

(1430 Hz)

5. A wave with a period of 0.125 s has a wavelength of 8.20 m. What is its velocity?

(65.6 m/s)

The Practice Problems:

Frequency and Period:

1. A wave passes every 0.0125 seconds. What is the frequency with which waves pass? Waves #1

2. Middle C is 261.6 Hz. What is its period? Waves #2

3. What is the frequency of a wave that has a period of 0.10 seconds? Waves #3

4. An earthquake wave has a period of 2.7 seconds. What is its frequency? Waves #4

Velocity, Frequency, and Wavelength:

5. What is the velocity of an earthquake wave that has a frequency of 12 Hz, and a wavelength of 450 m? Waves #5

6. What is the frequency of a sound wave (v = 343 m/s) that is 0.135 m long? Waves #6

7. What is the wavelength of a, 89.1x10⁶ Hz (89.1 MHz) radio wave? (v = c = 3.00x10⁸ m/s) Waves #7

8. What is the velocity of ocean waves if they have a wavelength of 13.2 meters, and a frequency of 0.25 Hz? Waves #8

9. What is the frequency that 16 m long boxcars pass a crossing when the train is going 42 m/s? Waves #9

10. What is the wavelength of a sound wave with a frequency of 261.6 Hz? (v = 343 m/s) Waves #10

11. What is the frequency of a 420. nm (420.x10^-9 m) light wave? (v = c = 3.00x10⁸ m/s) Waves #11

Velocity, Frequency, Period and Wavelength:

12. What is the speed of a wave with a wavelength of 14.5 m, and a period of 0.20 s? Waves #12

13. What is the period of a 4.2 m wavelength sound wave? (v = 343 m/s) Waves #13

14. What is the speed of a wave with a wavelength of 150 m, and a period of 0.50μs

(0.50x10^-6 s)? Waves #14

15. What is the period of an electromagnetic wave with a wavelength of 0.10 m?

(v = c = 3.00x10⁸ m/s) What is the frequency? Waves #15