= 24.9968708262...,...or 25 decibels. Considering that prolonged exposure to sounds above 85 decibels can cause nearing damage or loss, and considering that a gunshot from a .22 rimfire rifle has n intensity of about I rotection when relaxing at the rifle range? (2.5 x1013)Io, should you follow the rules and wear ear !!
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
Answer the problem below by applying the concept and properties of logarithmic functions
![Loudness is measured in decibels. The formula for the loudness of a sound
loglog I,
is given by "dB = 10
Io
where Io is the intensity of "threshold sound", or sound
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that can barely be perceived. Other sounds are defined in terms of how many times
more intense they are than threshold sound. For instance, a cat's purr is
about 316 times as intense as threshold sound, for a decibel rating of:
dB
loglog I
10
%3D
lo
10 oglog (316 Io)
Io
%3D
= 10log[ 316 ]
= 24.9968708262...,...or 25 decibels.
Considering that prolonged exposure to sounds above 85 decibels can cause
hearing damage or loss, and considering that a gunshot from a .22 rimfire rifle has
%3D
an intensity of about I
protection when relaxing at the rifle range?
(2.5 x1013)Io, should you follow the rules and wear ear
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