Answer:
violet
Explanation:
violet has shortest wavelength 
 
        
             
        
        
        
An example would be gravity
        
             
        
        
        
Answer:
89.45 v/v
Explanation:
Let's take the data:
First draw the amplifier circuit. 
After the circuit, the voltage division rule can be used to compute the parameters:
The input section is computed like this: 
The output section is computed like this 
The product A
 gives
 A
  = A×
×
Computing gives output voltage = 89.45 v/v
 
 
        
             
        
        
        
I don't know for sure but i think that it is because the force him pushing her pushed him back as well
Hope i helped