Homework Help: Physics - sound

Posted by Anonymous on Saturday, January 15, 2011 at 1:46pm.

When wearing proper ear protection, a jack hammer operator experiences a sound intensity of 1x10^-6 W/m2. The ear protection purpots to reduce the sound intensity by 100 times. What is the actual sound level of the jack hammer?

Physics - sound - Damon, Saturday, January 15, 2011 at 3:26pm
I = 10^-4 W/m^2

10 log(10^-4/10^-12)
10 log 10^8
80 log 10
80 dB
between busy street traffic and a subway train

Answer this Question

Related Questions

physics - 1.) The average sound intensity inside a busy neighborhood restaurant ...
physical - Suppose a sound of frequency 1200 Hz is emitted from a speaker 15 ...
physics - Suppose a sound of frequency 1200 Hz is emitted from a speaker 15 ...
physics - Suppose a sound of frequency 1200 Hz is emitted from a speaker 15 ...
Physics(Please help) - The intensity (in W/m2) of one sound is 4.83 times as ...
Physics - A speaker at an open-air concert emits 600 of sound power, radiated ...
College Physics - A baby's mouth is 30.0 cm from her father's ear and 1....
Math - On th decibel scale, the loudness of a sound, in decibels, is given by D=...
Math - You are attending a loud concert. To avoid ear damage, you decide to move...
Grade 11 Math - Here's the question: You are attending a very loud concert. ...

For Further Reading

First Name:
School Subject:
Answer: