The sound level near a noisy air conditioner is 70 dB. If twosuch units operate side by side, the sound level near themwould be(a) 70 dB.(b) 73 dB.(c) 105 dB.(d) 140 dB.

Q: Why do I sometimes hear resonant tones that are higher in frequency than the fundamental frequency?

A: The doppler effect is the phenomenon in which the relative frequency of sound varies from the…

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: Sound travels as :

A: Longitudinal waves are waves whose vibration or disturbance are parallel to the direction of the…

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: A certain note has a frequency of 1000 Hz. What is the frequency of a note one octave above it? Two…

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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: A pigeon takes the infrasonic hearing prize, what is meant by the statement?

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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: The voice of a person who has inhaled helium sounds very high-pitched. Why?

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Q: If sound becomes louder, which wave characteristic is likely increasing—frequency, wavelength,…

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Q: What is relation between speed of sound and room temperature?

A: Here we have to give relation between speed of sound and room temperature .

Q: How can we hear our own voice even after closing our ears?

A: There are two different ways people can heat their own sound.  In  first case, sound exits the mouth…

Q: What is the resultant sound level when an 81-dB sound and an 87-dB sound are heard simultaneously?

A: Given data The first intensity is I1=81 dB The second intensity is I2=87 dB The net resultant sound…

Q: Why does sound sometimes refract under water?

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Q: How will the air temperature in a room affect the pitch of organ pipes?

A: Given: Need to find how the air temperature in a room affects organ pipes.

Q: What would be the effect of pressure on the speed of sound and Why?

A: The speed of the sound is

Q: A Doppler effect occurs when a source of sound does what?

A: Given:  Source of sound

Q: vacuum cleaner makes 60 decibel sound, whisper is 20 decibel, how much louder the vacuum cleaner is?…

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Q: Which interact more with high pitched sounds- small bells or large bells?

A: We know that a high pitch sound refers to a high frequency sound wave and low pitch refers to a low…

Q: Why is the loudness of the sound heard by a plucked wire increased when it is mounted on a sound…

A: When the wire is mounted on a sound board, the surface area of vibration is increased.

Q: What ultimately becomes of the energy of sound in the air?

A: Sound waves are mechanical waves and  generate heat as they travel and end up as heat when they are…

Q: If one sound is 24 dB greater than another sound, what is the ratio of the larger intensity over the…

A: Given Information:- Difference between two sound levels is ∆β=24 dB. Required:- We have to calculate…

Q: At a rock concert, a 10 kW speaker is located on one side corner of the stage. If 2% of the speaker…

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Q: Does the pitch of the note depend on sound frequency, loudness, quality, or on all of these?

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Q: When you listen to a radio, why do you hear only one station at a time rather than hearing all…

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Q: The whistle of an approaching engine appears to be shriller than that of a receding engine.Explain.

A: Given:  whistle of an engine

Q: Which is louder: a 10 inch speaker with a 0.25 inch excursion or a 5 inch speaker with a 1 inch…

A: The loudness of the speaker depends on the amplitude. The amplitude is the measurement of the…

Q: Show that the fundamental frequency of an open organ pipe is double that in case of a closed organ…

A: The open end of an organ pipe has an antinode, and closed-end has a node. The wave diagram for an…

Q: What is the difference between sound and hearing?

A: Sound is derived due to vibrations caused in a medium when an object produces vibration pressure…

Q: Shaking a slinky with a wave speed = 150 m/s at different frequencies will show what kind of…

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Q: If the frequency of sound is doubled, what change will occur in its speed? In its wavelength?

A: The speed of the sound is a constant quantity 340m/s. thus frequency is inversely proportional to…

Q: How much more intense is sound at 40 dB than sound at 0 dB?

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Q: If one sound is 6 times as intense as another, it has a sound level about ____dB higher.?

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Q: suppose a listener in a recording studio is stead 3.5 meters from one speaker and 7 meters from a…

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Q: A flute filled with helium will, until the helium escapes, play notes at a much higher pitch than…

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

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Q: Shaking a slinky with a wavespeed = 250 m/s at different frequencies will show what kind of…

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Q: How many times louder would a 68.0 dB sound be compared to a 48.0 dB sound?

A: here, L2=68.0 dBL1=48.0 dB

Q: What kinds of wind conditions would make sound more easily heard at long distances? Less easily…

A: The direction of wind flow makes the sound heard difference at long distances.

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.