01 IU lub quCJLIONS (De sure tU SHUW Your Wörk) 1. How does the fundamental resonant frequency of a stretched string change if the tension in the string is doubled? 2. What is the second harmonic frequency of a stretched string whose fundamental resonant frequency is 440 Hz? 3. If an alloyed guitar B string (147 Hz resonance) has an average diameter of .6 mm over an effective oscillating length of 65 cm, what is the tension in Newtons if the alloy is 10 % aluminum and 90% Type hre to seah DELL wwert Celete F9 F10 FB copper? (assume the specific gravities of the metals are 2.6 and 8.9 grams per cubic centimeter, respectively) 4. What is the wavelength of a 147 Hz sound wave in air? 5. Suppose a listener in a recording studio is seated 3.5 meters from one speaker and 7 meters from a second speaker, both emitting the same 147 Hz tone from #4 above. Is the perceived sound louder or softer than if the same sound were emitted by a single source? Type tee eaich DELL 123 4. Y. K. H. I0 1s CEI

ASK YOUR TEACHE DETAILS OBINPHYS8 6.P.009. ........................ ..... ************ l Verify the values given in the textbook for the wavelengths (in air) of the lowest and highest frequencies of sound that people can hear (20 and 20,000 Hz, respectively). (Round your answers to at least three significant figures in meters and assume air temperature to be 20°C.) lowest-frequency wavelength highest-frequency wavelength Submit Answer

Select the correct one.

1. Assuming a speed of sound in air is 340 m/s, a) Determine the temperature of air in degrees Celsius. b) How far away is a storm if you note a 6 second delay between a lightning flash and the sound of thunder? Your answer

Answer 6-10. It is easy to answer all. Thanks

12. If 4 bugs make a sound of 14 dB then what will 25 bugs sound like? 13. Explain echoes. is the multi 14. Explain how band shells work. Ise words and a picture. qe obi