Mastering Physics Solutions: Sound Waves Traveling Down a String

Mastering Physics Solutions: Sound Waves Traveling Down a String

On November 28, 2013, in Chapter 13: Vibrations and Waves, by Mastering Physics Solutions

Part A = 0.26 s

If the string is 9.5 m long, has a mass of 55 g and is pulled taut with a tension of 7.5 N, how much time does it take for a wave to travel from one end of the string to the other?

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Mastering Physics Solutions: The Decibel Scale

Mastering Physics Solutions: The Decibel Scale

On May 24, 2013, in Chapter 14: Sound, by Mastering Physics Solutions

Part A = 10 dB
Part B = 20 dB
Part C = 3,6,9 dB

What is the sound intensity level Β, in decibels, of a sound wave whose intensity is 10 times the reference intensity (i.e., I = 10I0)?
What is the sound intensity level Β, in decibels, of a sound wave whose intensity is 100 times the reference intensity (i.e., I = 100I0)?
Calculate the change in decibels (ΔΒ2, ΔΒ4, and ΔΒ8) corresponding to f = 2, f = 4, and f = 8.

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Mastering Physics Solutions: Fundamental Wavelength and Frequency Ranking Task

Mastering Physics Solutions: Fundamental Wavelength and Frequency Ranking Task

On February 20, 2013, in Chapter 14: Sound, by Mastering Physics Solutions

Part A = (B,F) < (A,C,E) < D (increasing order)
Part B = (C,D,F) < (A, B) < E (increasing order)

A combination work of art/musical instrument is illustrated. Six lengths of identical piano wire are hung from the same support, and masses are hung from the free end of each wire. Each wire is 1, 2, or 3 units long, and each supports 1, 2, or 4 units of mass. The mass of each wire is negligible compared to the total mass hanging from it. When a strong breeze blows, the wires vibrate and create an eerie sound.

Rank each wire-mass system on the basis of its fundamental wavelength.
Rank each wire-mass system on the basis of its wave speed.

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Mastering Physics Solutions: Exercise 13.72

Mastering Physics Solutions: Exercise 13.72

On December 27, 2011, in Chapter 13: Vibrations and Waves, by Mastering Physics Solutions

Part A = 0.82 Click to use the calculator/solver for this part of the problem

You are setting up two standing string waves. You have a length of uniform piano wire that is 4.0 m long and has a mass of 0.150 kg. You cut this into two lengths, one of 1.9 m and the other of 2.1 m, and place each length under tension. What should be the ratio of tensions (expressed as short to long) so that their fundamental frequencies are the same?

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Mastering Physics Solutions: Standing Waves on a Guitar String

Mastering Physics Solutions: Standing Waves on a Guitar String

On December 26, 2011, in Chapter 13: Vibrations and Waves, by Mastering Physics Solutions

Part A = 40cm
Part B = 120cm
Part C = 384m/s Click to use the calculator/solver for this part of the problem
Part D = overtone number = pattern number -1
Part E = This is a complex tone with a fundamental of 400 Hz, plus some of its overtones.

Standing waves on a guitar string form when waves traveling down the string reflect off a point where the string is tied down or pressed against the fingerboard. the entire series of distortions may be superimposed on a single figure, like this (intro 2 figure) , indicating different moments in time using traces of different colors or line styles.
What is the wavelength of the longest wavelength standing wave pattern that can fit on this guitar string? How does the overtone number relate to the standing wave pattern number, previously denoted with the variable n?

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Mastering Physics Solutions: Question 14.4

Mastering Physics Solutions: Question 14.4

On December 20, 2011, in Chapter 14: Sound, by Mastering Physics Solutions

Part A = all of the preceding

The speed of sound in air A. is about 1/3 km/s. B. is about 1/5 mi/s. C. depends on temperature. D. all of the preceding.

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