Answer:
The reflectivity at the boundary of the two grains is  ×
×
Step-by-step explanation:
Given : 
Refractive index of one grains ( ) = 1.553
) = 1.553
Refractive index of second grains ( ) = 1.544
) = 1.544
According to the fresnel equation,
∴ general equation of refraction ( reflectivity ) 
where  = incident angle,
 = incident angle,  = transmitted angle
 = transmitted angle
but for normal incidence  °
°
so our equation become,
⇒   
      
      
       ×
×
Therefor reflectivity at the boundary is given by  ×
× .
.
 
        
             
        
        
        
It’s a, n=2m. ||||||||||||||||||||
        
             
        
        
        
Answer:
easy thr slope is 8 type it
 
        
                    
             
        
        
        
Answer:
x=1
Step-by-step explanation:
3x - 5 =7x -9
Subtract 3x from each side
3x - 5-3x =7x-3x -9
-5 = 4x-9
Add 9 to each side
-5+9 = 4x-9+9
4 = 4x
Divide each side by 4
4/4 = 4x/4
1=x
 
        
                    
             
        
        
        
Answer:  $323.33
<u>Step-by-step explanation:</u>
($17,000 + $4,900 - $2,500) ÷ 60 months = $323.33 per month
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