5. A violin is played with an initial intensity Ii changing to a final intensity If. If If = 5 Ii
問題詳情
5. A violin is played with an initial intensity Ii changing to a final intensity If. If If = 5 Ii , what is the difference in soundintensity level (dB) between these two extremes? (A) 10(log5) (B) 5 (C) 10 (D) 10(log2) (E) 2(log5)