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 51 decibels? (Round to an appropriate number of significant digits.)
A. 1.6 × 1014 watt/m2
B. 1.3 × 10-6 watt/m2
C. 1.3 × 10-7 watt/m2
D. 5.1 × 10-10 watt/m2
Answer: C
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A. 1
B. 
C. 0.8
D. 0.
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? 5 or 
? 6
A. 
B. (-?, 0)
C. 
D. 
? (0, ?)
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A. 6 in. B. 5 in. C. 6.5 in. D. 4 in.