How many times greater is the intensity of sound from a concert speaker at a distance of 1 meter than the intensity at a distance of 8 meters?

Q: The low-frequency speaker of a stereo set has a surface area of 0.06 m2 and produces 1 W of…

A: Given :      Surface area, A1  = 0.06 m 2      Power, P = 1 W     Intensity, I = 0.24 Wm2

Q: A sound of intensity I = 10-6 W/m2 falls on a detector of area A = 7 x 10-5 m2. (This is about the…

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Q: The frequency separating audible waves and ultrasonic waves is considered to be 20 kHz. What…

A: Given  Frequency f=20000Hz Speed of sound v=340m/s

Q: The warning tag on a lawn mower states that it produces noise at a level of 95.0 dB. What is this in…

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Q: What is the sound level (in decibels) of a sound whose intensity is 7.5 x 108 w/m2? 6.7 dB 7.5 dB 80…

A: Given : sound intensity , I = 7.5 × 10-8 W/m2

Q: e 30 m away is 100 dB. What is the sound intensity in W/m^

A: Given:- The distance d = 30 m  The level of sound of jet airplane  L = 100 dB  Find:-  The Sound…

Q: How far must one stand from a 4 mW point sound source if the intensity at that location is at the…

A: Given, Power = 4mW

Q: A sound wave in air has a frequnecy of 276 Hz and travels with a speed of 341 m/s. How far apart are…

A: Here the question is to find the distance between wave crests.Distance between wave crests is equal…

Q: How many times a minute does a boat bob up and down on ocean waves that have a wavelength of 38.0 m…

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Q: A source of sound has an intensity I1 and when its sound level is measured at a fixed distance the…

A: The initial sound intensity of the source is The final sound intensity of the source is The…

Q: If the sound level of one barking dog is 70 dB, estimate the sound level of 76 dogs barking…

A: Given: Sound level of one dog is 70 dB

Q: The cabin noise level of the new Boeing 787 "Dreamliner" may be about 6 decibels lower than that of…

A: The sound level in decibel (dB) scale is defined as:where is the intensity of the sound and is a…

Q: A subway train has a sound intensity level of 86 dB, and a rock band has a sound intensity level of…

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Q: How many times a minute does a boat bob up and down on ocean waves that have a wavelength of 40.0 m…

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Q: A 2-MHz ultrasound propagating in a tissue has a wavelength of 0.50 mm. (a) What is the speed of…

A: Solution-

Q: The sound intensity level of 9 m from a large power saw is 89 dB. At what distance(in meters) will…

A: (given) Sound intensity level at distance (r1)= 9 m Power saw β1 = 89 dB More tolerable intensity…

Q: The sound intensity level of a jet plane going down the runway as observed from a certain location…

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Q: Two speakers are 3.0 m apart and play identical tones of frequency 170 Hz. Sam stands directly in…

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Q: A sound wave radiates from a speaker in all directions. If the power of the sound source is 200 W,…

A: Given data -power of the sound source ( P) = 200 Wdistance of the wave source from the speaker ( r )…

Q: If the sound level of one barking dog is 40 dB, estimate the sound level of 2 dogs barking…

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Q: During takeoff, the sound intensity level of a jet engine is 140 dB at a distance of 34 m. What is…

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Q: (a) What is the intensity of a sound that has a level 8 dB lower than a 4·10−9  Wm2 sound? (b) What…

A: Part a): If two sounds are considered having intensities I1 and I2 with their sound levels as β1 and…

Q: The frequency of a sound wave, of wavelength 1.65 m, when the speed of sound in the air is 330 m/s…

A: Q6. Given that Wavelength of the sound wave   λ = 1.65 m Speed of the sound wave in air v = 330 m/s…

Q: Suppose that a public-address system emits a 494 Hz sound uniformly in all directions. (a) If the…

A: The wavelength of a wave is the distance between two successive crests or troughs. Now if a wave is…

Q: A point source of a sound wave has a power of 0.50 W. At what distance from the source will the…

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Q: What is the sound intensity level in dB produced by earphones that create an intensity of 8.5 x…

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Q: The sound intensity level at a rock concert is 114 dB, while that at a jazz fest is 88.6 dB.…

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Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.