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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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- Spring '08