An average factory has a sound intensity level of 80 dB, and a boiler shop has a sound intensity level of 100 dB. How many times greater is the sound intensity of the shop than that of the factory?
Answer:
10logP1 = 80dB
so P1 = 10^8
10logP2 = 100dB
so P2 = 10^10
so intensity of shop is 100 times the factory
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