Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the sound wave, and 
A certain noise produces 5.34 × 10-4 watts per square meter of power. What is the decibel level of this noise?
A. 9 db
B. 87 db
C. 201 db
D. 77 db
Answer: B
You might also like to view...
Find VC if C = 10 æF, R = 82 Kê, and t = 1 msec after being connected to a 5 V source.
a. 6 mV b. 61 mV c. 2.1 V d. 2.9 V e. 3.8 V
Two dice are thrown. Determine the number of ways the indicated score can be obtained.Multiple of 11
A. 3 B. 1 C. None D. 2
Solve.The monthly payment p on a mortgage varies directly with the amount borrowed b. Suppose that you decide to borrow $120,000 using a 30-year mortgage. You are told that your monthly payment is $675.80. Assume that you have decided to buy a more expensive home that requires you to borrow $250,000. What will your monthly payment be?
A. $324.38 B. $1535.91 C. $1407.92 D. $1689.50
Decide whether or not the ordered pair is a solution of the system.(3, -6)3x = -15 - y4x = -30 - 3y
A. No B. Yes