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Course Contents » > Assignment 7 » Lots of Noise 11 O Timer L Notes Evaluate-,Feedback-Print·Info Lots of Noise II Due on Tuesday, May 1 at 03:00 pm (EDT) You are standing in the middle of a large room listening to a cacaphony of sounds. Rank the intensity level of the sounds from each source (1=loudest, 2= next loudest, ) Consider all objects to be right next to you. If two values are within 0.1 dB from each other, consider them to be the same. 4Two buzzers each producing a sound with intensity level of 67dB 2Ten buzzers each producing a sound with intensity level of 60dB 5An object emitting a sound with an intensity level of 70dB One hundred buzzers each producing a sound with intensity level of 50dB Four buzzers each producing a sound with intensity level of 64d8 Submit AnswerIncorrect.Tries 2/10 Previous Tries

Explanation / Answer

a)

two buzzers each producing a sound with intensity level of 67dB

==> I.L=2*67dB

=67+10log2

=67+3

=70dB

b)
two buzzers each producing a sound with intensity level of 60dB

==> I.L=10*60dB

=60+10log10

=60+10

=70dB

c)

all objects emiting a sound with an intensity level of 70dB

I.L=70dB

d)

one hundred buzzers each producing a sound with intensity level of 50dB

==> I.L=100*50dB

=50+10log100

=50+20

=70dB

e)

four buzzers each producing a sound with intensity level of 64dB

==> I.L=4*64dB

=64+10log4

=64+6

=70dB

===> all sound intensity levels are equal

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