The loudness of a sound of intensity x, measured in watts per square meter, is defined as L(x) = log (
), where xo = 10-3.A company with load machinery needs to cut its sound intensity to 72% of its original level. By how many decibels should the loudness be reduced?
Fill in the blank(s) with the appropriate word(s).
1.427 decibels
Mathematics
You might also like to view...
Determine all critical points for the function.f(x) = x2 + 18x + 81
A. x = 0 B. x = 9 C. x = -9 D. x = -18
Mathematics
Integrate the function.
A. sin-1 
+ C
B. 
tan-1 
+ C
C. 
sin-1 
+ C
D. tan-1 
+ C
Mathematics
Use the product-to-sum or sum-to-product identities to find an identity for the given expression.sin 14? sin 9?
A. 
(cos -5? + cos 23?)
B. 
(cos -5? - cos 23?)
C. cos -5? - cos 23?
D. 
(sin -5? - sin 23?)
Mathematics
Solve.z = 49 ? 25
A. 74 B. 122,500 C. 12,250 D. 1225
Mathematics