When in air, a waterproof speaker emits sound waves that have a frequency of 1000 Hz. When the speaker is lowered into water, does the frequency of the sound increase, decrease, or remain the same? Does the wavelength of the sound increase, decrease, or remain the same?

Q: Tripling the distance between sound source and a listener will change the intensity, as detected by…

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Q: A musician is playing a pan flute (blowing a pipe close on one extreme). The length of the pipe is…

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Q: he ear canal is an open-closed tube for sound waves. A person has ear canal 3 cm long. Sound speed…

A: ear canal is open closed tube at open end there is antinode. at closed end there is node. distance…

Q: If two successive resonant frequencies for an open ended organ pipe (open at both ends) are 148 Hz…

A: Given data The first successive resonant frequency is given as f1 = 148 Hz. The second successive…

Q: Why is the speed of sound in dry air at 0 degree C?

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Q: A musician is playing a pan flute (blowing a pipe close on one extreme). The length of the pipe is…

A: Data Given ,  Length of the pipe ( L ) = 15 cm = 0.15 m Also , L = ( 1/4 of wavelength ) = ( λ / 4 )…

Q: By how many decibels do you reduce the sound intensity level due to a source of sound if you double…

A: Given: By how many decibels do you reduce the sound intensity level due to a source of sound if you…

Q: Sound wave is passed through the loudspeaker so that the sound intensity increased by Lp=50 dB. How…

A: Given: Sound wave is passed through the loudspeaker so that the sound intensity increased by Lp=50…

Q: Calculate the speed of waves (m/s) on a cello string that has a length of 0.700 m and a frequency of…

A: Given data: String Length (L) = 0.700 m Frequency (f) = 440 Hz First harmonic Required: The speed of…

Q: When you speak after breathing helium, in which the speed of sound is much greater than in air, your…

A: When you speak after breathing helium, the voice sounds quite different.

Q: A person stands directly in front of two speakers that are emitting the same pure tone. The person…

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Q: The speed of sound in a solid medium is 15 times greater than that in air. If the frequency of a…

A: The speed of sound in the solid medium can be calculated as,

Q: what frequency corresponds the wavelength of 4.3 [m]. If the speed of sound is 343 [m / s

A: Write the given values of the problem- Wavelength(λ) λ=4.3 mSpeed of sound(v)v=343 ms

Q: The eardrum, which transmits vibrations to the sensory organs of your ear, lies at the end of the…

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Q: An open vertical tube has water in it. A tuning fork vibrates over its mouth. As the water level is…

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Q: A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If…

A: Given Data: The initial intensity of a sound is, Ii=2×10-5 W/m2 The amplitude increases the…

Q: Determine the energy absorbed by the eardrum in 3.0 min if it has an area of 0.600 x 10^-4 m2 where…

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Q: 11 Sound waves whose intensities about 1 W/m^2 cause damage to the ear. How many decibels is this…

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Q: At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. The…

A: Consider the speed of sound in air be va, the speed of sound in water be vw, the depth of lake be d,…

Q: For a person with defective hearing ability, hearing aid is often required. Assume a hearing aid…

A: Given : the intensity of sound picked by hearing aid, I = 5.0 x 10-7 W/m2

Q: A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If…

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Q: When you "crack" a knuckle, you suddenly widen the knuckle cavity, allowing more volume for the…

A: Given data: distance from kunckle to ear r = 0.26 m sound level β=65dB

Q: A person stands directly in front of two speakers that are emitting the same pure tone. The person…

A: Answer:-  Where a person stands there is a minimum of sound interference. l2  -  l1  =  ( λ /2) The…

Q: If you shout across a canyon and hear the echo 0.80 s later, how wide is the canyon? Use the speed…

A: Given  Speed of sound (v) = 340 m/s   Delay time to hear echo (t) = 0.8 s    Let , canyon is ' d '…

Q: A person stands directly in front of two speakers that are emitting the same pure tone. The person…

A: The expression for the required frequency is,

Q: A wave of wavelength 00 cm is produced in air and it travels at a speed of 300 ms. Will it be…

A: Given: The wavelength of the wave is 0.6 cm. The speed of the wave is 300 m/s.

Q: As discussed in the chapter, many species of bats find flying insects by emitting pulses of…

A: Given As discussed in the chapter, many species of bats find flying insects by emitting pulses of…

Q: The sound of distant horses can be heard by applying the ear to the ground , whereas it is inaudible…

A: The sound of distant horses can be heard by applying the ear to the ground , whereas it is inaudible…

Q: The speed of sound in most solids is somewhat greater than in air, yet the density of solids is much…

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Q: A source of sound emits 5.0 mW of acoustic power uniformly in all directions. Calculate the…

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Q: A sound wave has a wavelength of 3.0 m. The distance between the center of a compression and the…

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Q: A person stands directly in front of two speakers that are emitting the same pure tone. The person…

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Q: A sonar echo returns to a submarine 1.92 s after being emitted. What is the distance to the object…

A: Given data:  The echo returns after time (t) = 1.92 s Speed of sound (v) = 1500 m/s Required:…

Q: A loud speaker on a tall pole broadcast sound waves equally in all directions. If the sound output…

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Q: The sound level near a noisy air conditioner is 70 dB. If twosuch units operate side by side, the…

A: The sound level when one conditioner works is given by, J=10logII0 dB Here, I is the intensity and…

Q: A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If…

A: Given:  I = 2 x 10-5 W/m2 Amplitude increases by 3 %

Q: Some bats utilize a sound pulse with a rapidly decreasing frequency. A decreasing-frequency pulse…

A: Given statement "Some bats utilize a sound pulse with a rapidly decreasing frequency"

Q: The longitudinal oscillations of air layers in sound wave propogation are consistent with the random…

A: The longitudinal waves are characterized by the displacement of air molecules in the direction of…

Q: An organ pipe open at both ends has a length of 0.8 m. If the velocity of sound in air is 340m/s,…

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Q: A stone dropped from the top of a tower of height 300 m splashes into the water of a pond near the…

A: Calculating the time taken by the stone to reach the bottom of the tower:

Q: A small source emits sound waves with a power output of 80.0 W. a) b) 2. Find the intensity 3.00 m…

A: Given: The output power of the source is 80 W. Part (a): Here, the distance of the point from the…

Q: An organ pipe open at both ends is 1.5 m long. A second organ pipe that is closed at one end and…

A: Given:- An organ pipe open at both ends is 1.5 m long A second organ pipe that is closed at one end…

Q: Sounds from the street below come through an open window measuring 0.75 m by 0.88 m. If the power…

A: Power of sound (P) = 120 W dimensions of window = 0.75 m by 0.88 m

Q: What is the intensity ratio for a sound level increase of 40 dB?

A: Given data The increment of the sound level is: β2 – β1 = 40 dB   The expression for the initial…

Q: If the distance from a bugle is tripled, by what factor does the sound intensity decrease? Assume…

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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.