TUTORIAL QUESTIONS 185-187

 

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 Questions:
185. Intensity vs distance
187. Intensity vs distance
 
 

Question 185. On the 4th of July, you hear a firecracker go off 50 feet away from you.  The intensity you hear is 0.08 Watts/m2.  What intensity would a person hear if she is standing 100 feet away?

a. 0.32 Watts/m2
b. 0.16 Watts/m2
c. 0.08 Watts/m2
d. 0.04 Watts/m2
e. 0.02 Watts/m2

Fundamentals of Sound reference: Sec. 5-A.
 
 
 
 

 Question 187.   Later, you hear a firecracker go off 60 feet away from you.  The intensity you hear is 0.09 Watts/m2. What intensity would a person hear who is standing 20 feet away?

a. 0.81 Watts/m2
b. 0.27 Watts/m2
c. 0.09 Watts/m2
d. 0.03 Watts/m2
e. 0.01 Watts/m2

Fundamentals of Sound reference: Sec. 5-A.
 
 

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