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n = 100
TI n = . . . . . ?
Penyelesaian :
TI n = TI + 10 (log n)
TI n = 50 + 10 (log 100)
TI n = 50 + 10 (2)
TI n = 50 + 20
TI n = 70 dB
Jadi, taraf intensitas yang terdengar adalah 70 dB (Jawaban D)
TI=50+10log100
TI=70dB (d)