Sebuah sumber bunyi mempunyai intesitas bunyi sebesar10^-8 watt/m^2. maka taraf intesitas bunyi tersebuat adalah
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BUNYI• TI
I = 10⁻⁸ W/m²
TI = __?
taraf intensitas
TI = 10 log (I / I₀)
TI = 10 log (10⁻⁸ / 10⁻¹²)
TI = 10 log 10⁴
TI = 40 dB ✓