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Constants
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1) A sound wave has a frequency of 1040 Hz. The air temperature is
C. To the nearest tenth of a meter per second, what is the speed ?
2) To the nearest centimeter , what is the wavelength of the sound in problem 1)?
3) Two speakers are both emitting sounds ,the first with an intensity level of 1x10
w/m^2 and the second with an intensity of 1x10
-10
w/m^2. What is the db level of the first?
4) What is the difference in the decibel (db) level of the two sounds in problem 3)?
5) What is the fundamental frequency (to the nearest Hz) of a open
cm long organ pipe if the air temperature is 30 degrees Celsius.
6) In problem 5), what would be the correct answers if it were a closed organ pipe ?
7) The air temperature is 20 C and you are traveling at
meters/sec towards a speaker emitting a sound at 1000Hz which is traveling away from you at a speed of 30 meters/sec. To the nearest Hz what is the frequency you hear?
8) In problem 7) what would be the answer if the speaker were traveling towards you?