In a resonating pipe that is open at one end and closed at the other end, there O A. are displacement antinodes at each end. O B. is a displacement node at the closed end and a displacement antino de at the open end. OC are displacement nodes at each end. O D.is a displacement node at the open end and a displacement antino de at the closed end.
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- WT-2 A pipe closed at one end and open at the other has a length of 0.750m. Jiatai places a speaker producing a low sound frequency above the open end of the tube. He then increases the frequency slowly. The pipe is in air at sea level. a) Draw the possible standing wave patterns for the sound waves in the tube starting with the lowest frequency. lowest frequency fa fo fa highest open end L=0.750m closed end L=D L= 2 b) Below each pattern write the tube-length-to-wavelength relationship for each pattern. c) Write the general symbolic relationship for the frequency of the n" harmonic, fn. Specify the possible values for n. d) Put the known information into your equation and find the numerical value of the frequencies fa, f, fes and fg. e) Jiatai can hear frequencies up to 19,980HZ. What is the highest frequency of the highest harmonic that Jiatai can hear from this tube and what is the harmonic number n of that harmonic?An alarm clock is ringing inside a jar. You are able to pump air out with a vacuum pump. What happens as more and more air is removed? a) The intensity of the sound from the bell does not change. b) The speed of the sound from the bell gradually increases. O c) The frequency of the sound from the bell gradually increases. d) The sound intensity from the bell gradually decreases. e) The frequency of the sound from the bell gradually decreases.WT-2 A pipe closed at one end and open at the other has a length of 0.750m. Jiatai places a speaker producing a low sound frequency above the open end of the tube. He then increases the frequency slowly. The pipe is in air at sea level. a) Draw the possible standing wave patterns for the sound waves in the tube starting with the lowest frequency. lowest frequency fa fo fa highest open end L=0.750m closed end L%3D L= L= b) Below each pattern write the tube-length-to-wavelength relationship for each pattern. c) Write the general symbolic relationship for the frequency of the n" harmonic, fn. Specify the possible values for n. d) Put the known information into your equation and find the numerical value of the frequencies fa, f, fe, and få. e) Jiatai can hear frequencies up to 19,980HZ. What is the highest frequency of the highest harmonic that Jiatai can hear from this tube and what is the harmonic number n of that harmonic? Answers WT-1 a) L=/4, L=32J4, L=52/4, L=7/4 b) 0.166m WT-2 a)---…
- 18. Suppose you are building a new house. While installing the hot water pipe to the shower, you can't find your tape measure. To measure the pipe, you close the bottom with your finger and blow across the top. You hear a loud resonance with frequency f = 282.1 hz (cycles/second). Since sound is a longitudinal wave, there must be a node at the closed bottom and an antinode at the top. Calculate the length of the pipe. The velocity of sound in the air is 340.0 m/s.O Attempt 4 Bats rely on sound localization to be able to fly during the night. On a cool 20°C summer night, a bat produces an ultrasonic sound with a frequency of 35 kHz. The speed of sound in air at 20°C is 340 m/s. What is the wavelength 1 of this ultrasound, in meters? %3D .01 m While remaining stationary, the bat emits a sound pulse and receives an echo after 0.150 s. How far away, in meters, is the reflecting object from the bat?Shi 48. A guitar has 4 strings. The mass per unit length of the G string is 4 times the mass per unit length of the E string. If they are both connected to the guitar and tightened to a tension of 100 N how does the fundamental wavelength of the E string compare to the fundamental wavelength of the G string? O A. AE = AG O B. AE = 2AG OC AE =3AG D. AE =4XG O E. 2Ag = AG %3D OF. 3AE = AG O C. 4Ag = AG Back Save & Continue 2020 BYU All rights res