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Verified answer
GELOMBANG BUNYI▷Taraf Intensitas
r₂ = 4r
TI₂ = TI₁ - 20 log (r₂ / r₁)
TI₂ = TI₁ - 20 log (4r / r)
TI₂ = TI₁ - 20 log 4 (log 4 ≈ 0,6)
TI₂ = TI₁ - 20 × 0,6
TI₂ = TI₁ - 12
Taraf intensitasnya berkurang 12 desibel.