Respuesta :

Level of sound is given by equation

[tex]L = 10 Log \frac{I}{I_0}[/tex]

here we know that

[tex]I = 0.5 pW/m^2[/tex]

also the standard intensity of sound will be

[tex]I_0 = 1 pW/m^2[/tex]

now we will use above equation

[tex]L = 10 Log\frac{0.5}{1}[/tex]

[tex]L = -3.0 dB[/tex]

So here it is no given option is correct as its level is coming - 3 dB

ggutierrez1231139

Answer: 1. C) 57 dB

2. A) 5.5 x 10^ -15 J

3. D) 1.4 m

4. D) 47 cm

5. A) 6.2 MHz

6. B) -18.2 dB

7. A) 2.8 uJ

8. C) 90 m

9. C) 511 W

10. C) 3.16 x 10^ -7 W/m^2

Explanation: 100% for quick check :)

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