I need help solving this and I have no clue where I should start

nzbanr156
timer Asked: Nov 17th, 2015

Question Description

How many times louder is a 60 dB sound than a 10 dB sound?


How many times more energy is released by a magnitude 5 earthquake than by a magnitude 3 earthquake?
When you are 2 meters away from the speakers at a concert, the sound level is 140 db.  How far away should you sit to reduce the level to 100 dB?

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