Solve the problem.Use the formula D = 10.0 log(S/S0), where the loudness of a sound in decibels is determined by S, the number of watt/m2 produced by the soundwave, and S0 = 1.00 × 10-12 watt/m2. What is the intensity in watt/m2 of a noise measured at 40 decibels? (Round to the nearest tenth.)
A. 4 × 10-10 watt/m2
B. 1.0 × 10-7 watt/m2
C. 1.0 × 10-8 watt/m2
D. 5.5 × 1013 watt/m2
Answer: C
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