How does our sensitivity to hearing different frequencies change with intensity? Compare a 1000 Hz sound at 60 dB (conversation level) to a 5000 Hz sound at 32 dB (also conversation level)

Q: Calculate the increase in sound level resulting from using an ear trumpet to aid in hearing. Take…

A: The equation for the intensity of sound is For sound having same power, the relation between the…

Q: In the "Sound Interference" demonstration we saw that multiple speakers playing sounds can create…

A: Given in question - In the experiment we observed sound interference. To find  - How many speakers…

Q: When we identify a note as having a certain pitch, is it likely to contain a single frequency? How…

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Q: If one sound has a relative intensity one-tenth that of another, how do their decibel levels…

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Q: How much louder is a 50 dB sound than a 10 dB sound? A 5 times B 25 times C 40 times D 10 000 times

A: The unit of loudness of sound is called decibel. It is denoted by dB.  The loudness is a measure of…

Q: What is the decibel level a person hears from a 16 W speaker 100 m away?

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Q: If a sound source is located at the junction of 3 surfaces perpendicular with each other, its…

A: Sound source is located at the junction of 3surfaces perpendicular with each other.

Q: Sonic booms are most closely related to which of these phenomena? O doppler effect O two-point…

A: Sonic boom : A sonic boom is a constructive interference of sound wave created by an object moving…

Q: How much more intense than the threshold of hearing is a sound of 10 dB? 30 dB? 60 dB?

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Q: The area of a typical eardrum is about 5.0x10−5 m2. What is the sound power (energy per second)…

A: Given:Area of typical eardrum (a) = 5×10-5 m2.

Q: Your voice produces many sound waves as you talk or sing. What does it mean for your voice to be…

A: SOlution: To brief on what does it  mean for your voice to be “dampened?”

Q: A 100-Hz pure tone at a 70-dB sound level and a 1,000-Hz pure tone at the same sound level are heard…

A: Given that, Sound level of 100 Hz is 70-dB sound level of 1000 Hz  is 70-dB

Q: What is the power output of a speaker if the sound level is  77 dB at 5 meters?

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Q: When listening to tuning forks of frequency 256 Hz and 260 Hz, one hears the following number of…

A: When two waves having slightly different frequencies travelling along same path superimpose then…

Q: Your ears are sensitive to differences in pitch, but they are not very sensitive to differences in…

A: The expression for the intensity,   Initial sound intensity,   The initial intensity,

Q: What is meant by sound ranging? Give one use of sound ranging?

A: Sound ranging is a method for determining the distance between a point and the position of a sound…

Q: A stereo is connected to two speakers, each sounding the same music. If each speaker independently…

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Q: If a woman needs an amplification of 7.0 × 104 times the threshold intensity to enable her to hear…

A: Given: A woman needs an amplification, (I) = 7×104 I0 Where I0 = reference intensity level (or…

Q: A 440 Hz pure note is sounded with an unknown frequency with a higher pitch. If you hear 2 beats per…

A: Given data The frequency of the pure note is: f pure note = 440 Hz The number of beats is: f beat =…

Q: If one sound has a relative intensity 995 times that of another, how do their decibel levels…

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Q: If the reference pressure is 25 μPa and a pressure wave is hitting your ear with an amplitude of…

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Q: A pair of loudspeakers on two sides of a stage are emitting identical pure tones (tones of a fixed…

A: When the person is standing exactly at equal distance from the sources, the path difference of both…

Q: Traditional methods of protecting the hearing of people whowork in areas with very high noise levels…

A: Given Traditional methods of protecting the hearing of people whowork in areas with very high noise…

Q: sound level measured in a room by a person watching a movie on a home theater system varies from…

A: Loudness of sound increase 10 times in increase of 10dB.

Q: 7. When a student tried to set up a home theater system,he arranged two speakers A and B on a wall…

A: Given data: Distance between the two speakers A and B is, s1=0.845 m. Distance of microphone from…

Q: reduce the of sound by 25%. How far bac must you sit in order to hear the

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Q: A football fan sits in the upper deck of a large football stadium and has a portable sound device to…

A: Sound audible at distance d = 500 m Loudness (in db) = 90 dB

Q: Why do you think your voice sounds so different to you when you hear a recording of your speech?

A: The sound travelled through the medium to the desired places. so when we hear our voice directly we…

Q: The decibel level of a single race car is 70 dB. What would the dB level be if 100 identical cars…

A: Decibel level can be written as B = 10 log10(I/I0) Where I is intensity of sound and I0 is reference…

Q: How many times greater is the intensity of sound from a concert speaker at a distance of 10 meters…

A: we know that  intensity of sound is inversely  proportional to the square of distance I  α  1/ r2…

Q: low-frequency speaker of a stereo set produces 10.0 W of acoustical power. If the speaker projects…

A: Given: The power of the speaker is 10 W. The speaker intensity is 80 dB.

Q: If a tone amplitude is greater than 0.5, what might happen when two tones are added together?

A: When tones are added together, they may interfere constructively or destructively. For constructive…

Q: Humans perceive sound with frequencies in the range 20to 20,000 Hz. Speech lies in the middle of…

A: a) Let us consider the width of a typical doorway be 75 cm=0.75 m b) we know the velocity of sound…

Q: Suppose a person has a 50-dB hearing loss at all frequencies. By how many factors of 10 will…

A: Decibels of sound hearing loss=50 dB

Q: If a woman needs an amplification of 5.0X1012 times the threshold intensity to enable her to hear at…

A: Given Data: The intensity of the sound is, I = 5 x 1012 I0, where I0 is the initial intensity. The…

Q: Why can sounds of very high velocity not be transmitted through a material of high density but of…

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

A: Given : L1 = 8.15 m L2 = 8.21 m

Q: What will happen when two sound waves of slightly different frequencies occur at the same time? How…

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Q: If you measure an interval of 5 seconds between seeing a lighting flash and hearing the thunder, how…

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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.