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Author Question: A barking dog delivers about 1.0 mW of power, which is assumed to be uniformly distributed in all ... (Read 69 times)

biggirl4568

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on: Jul 29, 2018
A barking dog delivers about 1.0 mW of power, which is assumed to be uniformly distributed in all directions. What is the intensity level in decibels at a distance 5.00 m from the dog? The threshold of human hearing is 1.0  10-12 W/m2.
 
  A) 61 dB
  B) 63 dB
  C) 65 dB
  D) 68 dB

Question 2

The intensity at a distance of 6.0 m from a source that is radiating equally in all directions is 6.0  10-10 W/m2. What is the intensity level in dB? The threshold of human hearing is 1.0  10-12 W/m2.
 
  A) 18 dB
  B) 23 dB
  C) 28 dB
  D) 32 dB
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Liamb2179

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

C


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biggirl4568

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Reply #2 on: Jul 29, 2018
TY


Liamb2179

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Reply #3 on: Jul 29, 2018
You're welcome


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