Solve.The loudness, D, in decibels of a sound of intensity I is given by D = 10 log (I/I0), where I is measured in watt/m2 and I0 = 10-12 watt/m2. What is the decibel level of a noise whose intensity is 6.19 x 10-4 watt/m2? (Round to the nearest whole number.)
A. 9 decibels
B. 202 decibels
C. 88 decibels
D. 78 decibels
Answer: C
Mathematics
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A. 
B. 
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D. 
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