contestada

Compared to a sound of 10 dB a sound of 50 dB has:
a. 40 times the intensity
b. 400 times the intensity
c. 10000 times the intensity

Respuesta :

ouff2003

Explanation:

[tex] \beta = 10 \: log_{10} (\frac{i1}{i0} ) \\ [/tex]

B = intensity level

i1 = intensity

io = 10-¹² W/m²

Incidence 1

10 = 10 log10 ( I1 /10-¹²)

I1 = 10-¹¹ W/m²

Incidence 2

50 = 10 log10 ( I2 / 10-¹²)

I2 = 10-⁷ W/m²

so , I1 × 10000 = I2

Answer : C

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