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R = 10 m
B = 40 Db
Io = 10⁻¹² W/m²
I = ?
Potencia = ?
El nivel de intensidad será de: 10⁻⁸ W/m²
Hallamos la potencia de la fuente:
A = 4π · R² = 4(3,14) · (10m)² = 12,56 · 100 m² = 1256 m²
Saludos desde Venezuela, espero te sirva