I = P / A
= P / (4πR²)
= (12,56 W) / [4(3,14)(100 m)²]
= (12,56 W) / (125600 m²)
= 10⁻⁴ W/m²
TI = 10 log (I / I₀)
= 10 log [(10⁻⁴ W/m²) / (10⁻¹² W/m²)]
= 80 dB
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I = P / A
= P / (4πR²)
= (12,56 W) / [4(3,14)(100 m)²]
= (12,56 W) / (125600 m²)
= 10⁻⁴ W/m²
TI = 10 log (I / I₀)
= 10 log [(10⁻⁴ W/m²) / (10⁻¹² W/m²)]
= 80 dB
=P/(4phiR²)
=(12.56w)/[4(3,14)(100m)²]
=12,56w/125600 m²
=10^-4 w/m²
Tl=10 log(l/lo)
=10 log [(10^-4w/m²)/(10^-12w/m²)
=80dB
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