Lightning is an electric current. Within a thundercloud way up in the sky, many small bits of ice (frozen raindrops) bump into each other as they move around in the air. All of those collisions create an electric charge. After a while, the whole cloud fills up with electrical charger
        
             
        
        
        
Well, it happens a few weeks ahead, then for a total of 3 hours and 40 minutes.
        
             
        
        
        
Answer: friction reduces the speed during motion
Explanation:
The more the friction, the lesser the speed during motion
 
        
             
        
        
        
As we know that spring force is given as

here we know that
F = 4 N
x = 2 cm = 0.02 m
now from the above equation we will have


so the elastic constant of the spring will be 200 N/m
 
        
             
        
        
        
The outer shell can hold 1 electron