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?

Answer 1

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