Answer:
 E1  = 10.15 * 10^4 N/C
 E2 = 0
 E3 = 10.15 *10^4 N/C
Explanation:
Given data:
Two 13 cm-long thin glass rods ( L ) = 0.13 m 
charge (Q)  = +11nC 
distance between thin glass rods   = 4 cm .
<u>Calculate the electric field strengths </u>
electric charge due to a single glass rod in the question ( E ) = 
equation 1 can be used to determine E1, E2 and E3 because the points lie within the two rods hence the net electric field produced will be equal to the difference in electric fields produced 
applying equation 1 to determine E1 
E1 =  
  ( distance from 1 rod is 0.01 m and from the other rod is 0.03 )
    ( distance from 1 rod is 0.01 m and from the other rod is 0.03 )
    = 
    = 10.15 * 10^4 N/C
applying equation 1 to determine E2
E2 = 

 therefore E2 = 0
E1 = E3 
hence E3 = 10.15*10^4 N/C 
 
        
             
        
        
        
A statement would be to the effect that plants use oxygen as part of photosynthesis
        
                    
             
        
        
        
<h3><u>Answer;</u></h3>
volume = 6.3 × 10^-2 L
<h3><u>Explanation</u>;</h3>
Volume = mass/density 
Mass = 0.0565 Kg, 
Density = 900 kg/m³
              = 0.0565 kg/ 900 kg /m³
              = 6.3 × 10^-5 M³
but; 1000 L = 1 m³
Hence, <u>volume = 6.3 × 10^-2 L</u>
 
        
        
        
Answer:
It's an Angle of incidence that provides a 90° angle but is also refracted at the same time. it's used to find the water-air boundary (which is 48.6 degrees). in addition, its an angle of incidence value.