Asked by Julia

A singer is performing to a crows. How many times more intense is her singing at 70 dB, compared to a bird whose call is 34 dB? Round to one decimal place, if nescessary.
Answered by henry2,
db = 10*Log A = 70
A = 10^7.

db = 10*Log B = 34
B = 10^3.4.

Ratio = A/B = 10^7/10^3.4 = 3981.
Answered by henry2,
Diff. = 10^7-10^3.4 = 9.99*10^6.