# prob06 - 1.5 m If the frequency is 112 Hz what is the speed...

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Instructions Complete the following exercises in class on Tuesday, May 24. Feel free to work together in groups or to consult with your instructor. These exercises are for your bene±t and need not be turned in. Make sure you understand all of the material! 1. Using the principle of superposition, add the following two waves point by point to determine the resulting waveform. 2. Using the principle of superposition, add the following two waves point by point to determine the resulting waveform. -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Summer 2011 1 Problem Set 06 P ROBLEM S ET 6 G ENERAL S CIENCE 121 S UMMER 2011

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3. The following sound waves have what velocity? A) Middle C (256 Hz, λ =1.34 m) B) Note A (440 Hz, λ =78 cm) C) Note from signal generator (2500 Hz, λ =13.72 cm) 4. The distance between the center of a compression and the center of an adjacent rarefaction is
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Unformatted text preview: 1.5 m. If the frequency is 112 Hz, what is the speed of the wave front? 5. The density of lead is 11,340 kg/m 3 and the density of water is 1000 kg/m 3 . Determine the volume of 1 kg of each of these substances. 6. Compare the distance traveled in 8 seconds as a given sound moves through air and a steel rail (c = 4500 m/s). 7. When you suck in the helium from a balloon, your voice turns into a higher pitch. Explain this in terms of what the speed of sound in helium might be compared to air. 8. Determine the speed of sound for the following temperatures: -10 C, 0 C, 10 C, 20 C, 30 C. Summer 2011 2 Problem Set 06 9. In the ear, what is the function of the pinna? 10. How do you determine direction of sound? 11. Collectively, what does the ear drum, malleus, incus, and stapes do? 12. How does the ear convert mechanical pressure into nerve pulses? Summer 2011 3 Problem Set 06...
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## This note was uploaded on 06/02/2011 for the course GSCI 121 taught by Professor Niculescu,m during the Spring '08 term at James Madison University.

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prob06 - 1.5 m If the frequency is 112 Hz what is the speed...

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