Answer:
Net force is Zero.
Explanation:
If all forces that are equal and opposite are exerted on an object the resulting force will be Zero. 
 
        
                    
             
        
        
        
Answer:D.Refractive Indez
Explanation:
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".
 
        
                    
             
        
        
        
Answer:
I dont know spanish... and i live in Cali... wow....
Explanation:
 
        
             
        
        
        
Answer: the sample of solid has less energy than the sample of gas 
Explanation:
APEX
 
        
             
        
        
        
To solve this problem we will apply the concepts related to electric potential and electric potential energy. By definition we know that the electric potential is determined under the function:

 = Coulomb's constant
 = Coulomb's constant
q = Charge
r = Radius 
At the same time 

The values of variables are the same, then if we replace in a single equation we have this expression,

If we replace the values, we have finally that the charge is, 




Therefore the potential energy of the system is 