Organ pipe  Y with an open end in both ends is twice as long as organ pipe X with an open end in one side.What is the ratio of the frequencies between that of organ pipe X and organ pipe Y: A)1:1 B)1:2 C)2:1 D)1:4 E)4:1

The longest pipe found in most medium-sized pipe organs is 3.92 m (12.9 ft ). a)What is the wavelength of the note corresponding to the fundamental mode if the pipe is open at both ends? b)What is the wavelength of the note corresponding to the fundamental mode if the pipe is open at one end and closed at the other?

A rope has an overall length 10.00 m and a total mass of 2.00 kg. The rope is stretched with a tension of 50.00 N. One end of the rope is fixed, and the other is moved up and down with a frequency of 4.00 Hz. What is the wavelength for the frequency of 4.00 Hz?a) 15.81 m b) 63.24 m C) 0.80 m d) 3.95 m

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?

a) In the first harmonic (choose one to answer): the wavelength is the smallest, the frequency is the largest, the speed is the smallest, the voltage is the largest b) The first overtone (choose one to answer): has half the wavelength of the fundamental pattern, has twice the wavelength of the fundamental pattern, has half the frequency of the fundamental pattern, has twice the speed of the fundamental pattern c) The wave length of the fifth harmonic is (choose one to answer): 1/5 of the length of the second harmonic, 5/2 of the wave length of the second harmonic, 2/5 of the wave length of the second harmonic, 5 times the length of the second harmonic, the same as the wave length of the fifth overtone

For the lowest harmonic of pipe with two open ends, how much of a wavelength fits into the pipe's length? O 0.25 wavelength O 0.50 wavelength O 0.75 wavelength O 1.00 wavelength O 1.25 wavelength

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)---…

A 1m long string is pinned at both ends. The string is plucked, and a standing wave is created. The wave number is ? = 4? rad/m.a) Calculate the wavelength of the wave.b) If there are 5 nodes in the string, find their positions.Answers: • 0.5 m• Xn = {0, 0.25, 0.5, 0.75, 1}

The sound level at a distance of 3.0 m from a source is 120 dB. a) At what distance will the soundlevel be 100 dB? b) At what distance will the sound level be 10 dB?

A 4.50 m long rope is stretched between two supports with a tension that makes the speed of transverse waves 48.0 m/s . a)What is the wavelength of the fundamental tone? b)What is the frequency of the fundamental tone? c)What is the wavelength of the second overtone? d)What is the frequency of the second overtone? e)What is the wavelength of the fourth harmonic? f)What is the frequency of the fourth harmonic?