Lets say there is a small firecracker that emits 1200 of peak power.(adsbygoogle = window.adsbygoogle || []).push({});

What is the peak intensity B in decibels at a distance of 1 m from the firecracker?

This is what i have tried:

B = 10log(I/Io)

I = 1200/pi Since I = power/area and the area is pir^2, pi(1m)^2

Io=( 10^-12 W/m^2)

So B= 10log([1200/pi] / [10^-12 ]) and i get around 135.83 , however the answer is incorrect

Can someone help please? THank you

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# Homework Help: Ear Damage from a Small Firecracker

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