1. A pulse traveling along a bullwhip is an example of a __________ wave.

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Presentation transcript:

1. A pulse traveling along a bullwhip is an example of a __________ wave.

2. A wave with a frequency of 10 Hz and a wavelength of 2 m has a speed of __________.

3. Two speakers right next to each other are producing a constant 440 hz sound. Assuming v = 343 m/s, how much “lag-time” would one of the speakers need to be playing behind the other to cancel the sound?

4. A sound wave has a frequency of 1957 Hz 4. A sound wave has a frequency of 1957 Hz. The air temperature is 37 oC. To the nearest tenth of a meter per second, what is the speed?

5. The superposition of waves with equal but opposite amplitudes causes __________. a. constructive interference b. consonance c. destructive interference d. dissidence

6. You are riding a bike at 5 m/s toward a constant frequency sound (assume v = 343 m/s). Your nifty frequency meter registers a frequency of 400 hz. A few quick physics calculations while you are riding reveals the true frequency of the source to be…?

7. The __________ of a sound wave relates to the loudness.

8. Correctly draw interference result (superposition) of these two waves… handout.

9. A sound is 15 decibels louder than another… how many times more intense is this sound?

10. Two tuning forks are sounded together and a beat frequency of 2 Hz is noticeable. If one tuning fork is printed as a frequency of 256 Hz, the other must be _________.

9. Assuming speed of sound is 343 m/s… what length test tube would produce a sound of 523 hz (“C”) when you blow over it??? Assume standing wave is closed end – open end in test tube and is fundamental frequency. Lets Try It!!!!

12. A 500 hz sound wave has an amplitude of 0. 8 cm 12. A 500 hz sound wave has an amplitude of 0.8 cm. If v = 343 m/s, how much work is done to your eardrum in 10 seconds?

13. The fundamental frequency of a guitar string is 440 Hz 13. The fundamental frequency of a guitar string is 440 Hz. The guitar string is muted with a finger so that the fundamental frequency (1st harmonic) and the 2nd harmonic is removed. What is the lowest possible frequency being produced and where is the finger placed?