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Problem 1: A cable helping to support a bridge is tested and found to resonate at...
6. (3 pts.) A long submerged support leg of a bridge will experience vortex shedding when a river...
6. (3 pts.) A long submerged support leg of a bridge will experience vortex shedding when a river current flows past it. These vortices can create damaging periodic forces so you want to do a scale model test in a water tunnel as part of the initial bridge design. A dimensional analysis on this phenomenon reveals the following Pi terms: where ω shedding frequency, V-fluid velocity, p-fluid density,μ fluid viscosity and D and H are as shown. For the specific...
Guy wires used to support tall radio antennae often need to be kept at a specific...
Guy wires used to support tall radio antennae often need to be kept at a specific tension or else the antennae may bend or buckle. The tension tends to decrease over time as the wire ages (and stretches) but on cold days, when the wire contracts, the tension increases. So, to keep the tension within tolerances, the tension in the wire is checked regularly and adjusted if it is found to be outside of tolerances. One way to check the...
Guy wires used to support tall radio antennae often need to be kept at a specific...
Guy wires used to support tall radio antennae often need to be kept at a specific tension or else the antennae may bend or buckle. The tension tends to decrease over time as the wire ages (and stretches) but on cold days, when the wire contracts, the tension increases. So, to keep the tension within tolerances, the tension in the wire is checked regularly and adjusted if it is found to be outside of tolerances. One way to check the...
Problem 4 [8 pts] A long pipe, length L, is closed at both ends, and filled...
Problem 4 [8 pts] A long pipe, length L, is closed at both ends, and filled with a gas with speed of sound v. The pipe is excited in some fashion in order to produce standing waves. (a) Sketch the standing wave pattern for the four lowest frequencies supported by this pipe. Label the nodes and antinodes. (b) Make a table of the wavelengths and frequencies of the sound waves that are formed by these four excitations, in terms of...
#4 (will rate) 1) The fundamental frequency of a pipe that is open at both ends...
#4
(will rate)
1) The fundamental frequency of a pipe that is open at both ends is 611 Hz. (Let the speed of sound be 344 m/s.) (a) How long is this pipe? (b) If one end is now closed, find the wavelength of the new fundamental. (c) If one end is now closed, find the frequency of the new fundamental. 2) A piano tuner stretches a steel piano wire with a tension of 800 N. The steel wire is...
Please give detailed explanations/solutions, thank you! [5] 4. (a) Write a brief essay on standing waves...
Please give detailed explanations/solutions, thank you!
[5] 4. (a) Write a brief essay on standing waves on stringed musical instruments as compared to standing waves on the pipes of a pipe organ having pipes that are open at both ends as well as pipes that are open at one end and closed at the other. (b) You have been asked to determine the length of a metal tube that has been bent into a complex shape. One end of the...
SOLUTION (A) Find the frequencies if the pipe is open at both ends. _V 343 m/s...
SOLUTION (A) Find the frequencies if the pipe is open at both ends. _V 343 m/s Substitute into whole harmonics equation, with n = 1. 11-222(2.46 m) = 69.7 Hz Multiply to find the second and third harmonics. 12 - 27 - 139 Hz 13 = 3f7 - 209 Hz (B) How many harmonics lle between 20 Hz and 20000 Hz for this pipe? 343 m/s Set the frequency in the harmonics equation equal to 2.00 x 104 Hz and...
The lowest two resonant (standing wave) frequencies possible for a particular closed tube are 200 Hz...
The lowest two resonant (standing wave) frequencies possible for a particular closed tube are 200 Hz apart. What is the frequency of the 1 st harmonic for this tube when both sides are opened? 200 Hz 250 Hz 300 Hz 350 Hz 400 Hz numbers 20-21 A 1.2 m closed tube resonates at the 5th harmonic. What is the wavelength? 0.84 m 0.96 m 1.08 m 1.20 m 1.32 m Which of the following distances from the open end will...
I know how to do the first 3 parts. Need last 3 parts of the question....
I know how to do the first 3 parts. Need last 3 parts of the question. Posted whole thing for reference. Thanks! a) A 1 meter long guitar string of linear mass density 2g/m3 is put under tension until it resonates with a fundamental frequency of 440 Hz. Determine the tension that produces this fundamental frequency. Also determine the other of the first four harmonic frequencies and draw diagrams illustrating what each of these oscillations looks like on the string....
Question 8 of 8 (1 point) View problem in a pop-up 2.1 Section Exercise 23 The...
Question 8 of 8 (1 point) View problem in a pop-up 2.1 Section Exercise 23 The data show the scores of the winning teams in the Rose Bowl. Construct a frequency distribution for the data using a class width of 8. Che 41 38 28 34 37 34 17 38 21 20 32 41 38 24 20 45 21 26 38 49 Guid 20 20 22 45 21 38 34 46 17 22 27 14 23 18 45 24 28...
6. (3 pts.) A long submerged support leg of a bridge will experience vortex shedding when a river current flows past it. These vortices can create damaging periodic forces so you want to do a scale model test in a water tunnel as part of the initial bridge design. A dimensional analysis on this phenomenon reveals the following Pi terms: where ω shedding frequency, V-fluid velocity, p-fluid density,μ fluid viscosity and D and H are as shown. For the specific...
Problem 4 [8 pts] A long pipe, length L, is closed at both ends, and filled with a gas with speed of sound v. The pipe is excited in some fashion in order to produce standing waves. (a) Sketch the standing wave pattern for the four lowest frequencies supported by this pipe. Label the nodes and antinodes. (b) Make a table of the wavelengths and frequencies of the sound waves that are formed by these four excitations, in terms of...
#4
(will rate)
1) The fundamental frequency of a pipe that is open at both ends is 611 Hz. (Let the speed of sound be 344 m/s.) (a) How long is this pipe? (b) If one end is now closed, find the wavelength of the new fundamental. (c) If one end is now closed, find the frequency of the new fundamental. 2) A piano tuner stretches a steel piano wire with a tension of 800 N. The steel wire is...
Please give detailed explanations/solutions, thank you!
[5] 4. (a) Write a brief essay on standing waves on stringed musical instruments as compared to standing waves on the pipes of a pipe organ having pipes that are open at both ends as well as pipes that are open at one end and closed at the other. (b) You have been asked to determine the length of a metal tube that has been bent into a complex shape. One end of the...
SOLUTION (A) Find the frequencies if the pipe is open at both ends. _V 343 m/s Substitute into whole harmonics equation, with n = 1. 11-222(2.46 m) = 69.7 Hz Multiply to find the second and third harmonics. 12 - 27 - 139 Hz 13 = 3f7 - 209 Hz (B) How many harmonics lle between 20 Hz and 20000 Hz for this pipe? 343 m/s Set the frequency in the harmonics equation equal to 2.00 x 104 Hz and...
The lowest two resonant (standing wave) frequencies possible for a particular closed tube are 200 Hz apart. What is the frequency of the 1 st harmonic for this tube when both sides are opened? 200 Hz 250 Hz 300 Hz 350 Hz 400 Hz numbers 20-21 A 1.2 m closed tube resonates at the 5th harmonic. What is the wavelength? 0.84 m 0.96 m 1.08 m 1.20 m 1.32 m Which of the following distances from the open end will...
Question 8 of 8 (1 point) View problem in a pop-up 2.1 Section Exercise 23 The data show the scores of the winning teams in the Rose Bowl. Construct a frequency distribution for the data using a class width of 8. Che 41 38 28 34 37 34 17 38 21 20 32 41 38 24 20 45 21 26 38 49 Guid 20 20 22 45 21 38 34 46 17 22 27 14 23 18 45 24 28...
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