Question 1194425
d = 10*log(I/IO)
IO = 10^-12.
therefore:
d = 10 * log(I/10^-12)
jet plane has a sound intensity of 8.1*10^2 watts per square meter.
therefore:
d = 10*log((8.1*10^2) / 10^-12)
10^2/10^-12 = 10^(2-(-12)) = 10^(2+12) = 10^14
therefore:
d = 10 * log(8.1 * 10^14)
log(8.1 * 10^14) = 14.90848502
10 * that = 149.0848502 decibels
that's the value of d.