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Verified answer
Diket :jarak awal, r1 = 1 m
Taraf intensitas awal, TI1 = 60 dB
jarak akhir, r2 = 100 m
Tanya :
Taraf intensitas akhir, TI2 = __?
Jawab :
TI2 = TI1 - 20 log (r2/r1)
TI2 = 60 - 20 log (100/1)
TI2 = 60 - 20 log 100
TI2 = 60 - 20 . 2
TI2 = 60 - 40
TI2 = 20 dB
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