Calculating Wave Speed
This worksheet is designed to give you some practice using the general wave equation: v=λƒ. You’ll be expected to use this equation correctly or the upcoming chapter test, sound lab and test.
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1. Frequency = 5 Hz
Wavelength = 100m
Speed =
2. Frequency = 20 Hz
Wavelength = 200 m
Speed =
3. Frequency = 27 Hz
Wavelength = 150 m
Speed =
4. Frequency = 27 Hz
Wavelength =
Speed= 46 m/s
5. Frequency =
Wavelength = 502 km
Speed= 100 m/s
6. Frequency =
Wavelength = 326 m
Speed = 14 m/s
7. Frequency = 97 Hz
Wavelength = 1378 km
Speed =
8.) Frequency = 78 Hz
Wavelength = 1378 km
Speed =
9. What is the v if λ = 8 m and ƒ = 20 Hz?
10. What is the λ if v = 50 m/s and ƒ = 25 Hz?
11. What is the ƒ if v = 50 m/s and λ = 10 m?
12. What is the v if λ = 1 m and ƒ = 345 Hz?
13. What is the λ if v = 100 m/s and ƒ = 3 Hz?
14. What is the ƒ if v = 120 m/s and λ = 3 m?
15. What is the v if λ = 3 m and ƒ = 10 Hz?
16. What is the λ if v = 345 m/s and ƒ = 790 Hz?
17. What is the ƒ if v = 345 m/s and λ = .25 m?
18. Joe the whistle maker knows that the maximum volume for a whistle will occur if the length of the whistle is exactly ¼ of the wavelength. If Joe must make a whistle that plays at a pitch of 320 Hz, how long will the whistle be?
19. How long is the wavelength of KAJA radio whose broadcast frequency is 97.1 MHz? (97.1 MHz =97,100,000 Hz and v = 300,000,000 m/s)
20. Using the velocity of sound at 343 m/s and given the frequencies of a piano scale, compute the wavelengths of that scale.
|Note |Frequency |Wavelength |Note |Frequency |Wavelength |
|C4 |261.6 |G4 |392 |
|D4 |293.6 |A4 |440 |
|E4 |329.6 |B4 |493.9 |
|F4 |349.2 |C5 |523.2 |
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