Using your knowledge of exponential and logarithmic functions and properties, what is the intensity of a fire alarm that has a s
ound level of 120 decibels?
A. 
1.0x10^-12 watts/m^2
B. 
1.0x10^0 watts/m^2
C. 
12 watts/m^2
D. 
1.10x10^2 watts/m^2
 
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Option B:

Solution:
Given sound level = 120 decibel
To find the intensity of a fire alarm:

where 
Step 1: First divide the decibel level by 10.
120 ÷ 10 = 12
Step 2: Use that value in the exponent of the ratio with base 10.

Step 3: Use that power of twelve to find the intensity in Watts per square meter.


Now, do the cross multiplication,




Option B is the correct answer.
Hence  .
.
 
                                
             
         	    You might be interested in
    
        
        
0.48=48/100=12/25~~~12/25>11/25 True✔ ~~~~Have a nice day!!! ★★
        
             
        
        
        
Use the given functions to set up and simplify 
h(8). The answer is −22. Hope this help! :)
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
He borrowed money so he has -5 dollars and but he payed 2 back, so now he   needs to pay $3
 
        
                    
             
        
        
        
Answer:
b
Step-by-step explanation:
 
        
             
        
        
        
The geometric sequence is 3, 9, 27, 81, 243, 729 because each time it is multiplied by 3.