Please do 12-2 Y by 12-2. Referring to Table 12.1, approximately how much louder

Question

Please do 12-2

Y by 12-2. Referring to Table 12.1, approximately how much louder does al wi e fact street traffic sound than a quiet radio? At one time, it was believed that the ear responded logarith 3000 here of the ear canal factor of 2. Thu 3000-Hz range to pressure squ by a factor of a intensity. Referring to Table 12.1, a logarithmic response would in example, a busy street sounds only six times louder than the a even though the power of the street sounds is a million times greatez imply te rustle of The proces TABLE 12.1 Sound Levels Due to Various Sources (representative valus Source of sound Threshold of pain Riveter Busy street traffic Ordinary conversation Quiet automobile Quiet radio at home Average whisper Rustle of leaves Threshold of hearing Sound level (dB) 120 90 70 60 50 struction of th of sound. For allow us to se (This feature of a loud part be meaningle produces vibr brain and the Sound level (Wla 12.4 BAT The human a that can hear They emit hi from surrour information 20 14

Explanation / Answer

Here, in the chart, the level of loudness is already given i.e in dB and intensity of sound is also given,

Now, in this chart, various sources of sounds with dB are given but we have to find how much loudness busy street traffic than the quit radio at home.  

The loudness of busy street= 70dB

The loudness of quit radio=40dB

We have to find loudness of street is so much time than radio.

70=n*40

Where the n= number of times

n=70/40 = 1.75

so, busy street traffic loudness is approximately 1.75 times of quit radio.loudness.

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