Answer:

Explanation:
Given that

As both charges are negative so there exist force of repulsion in direction as shown in figure.

Angle at which force F12 is acting is



Force exerted on charge -2e is equal in magnitude to F12 but is in opposite direction


 
        
             
        
        
        
Answer:
Inertia = angular momentum / angular velocity
 
        
             
        
        
        
Answer:
The acceleration of the satellite is 
Explanation:
The acceleration in a circular motion is defined as:
 (1)
  (1)
Where a is the centripetal acceleration, v the velocity and r is the radius.
The equation of the orbital velocity is defined as
 (2)
 (2)
Where r is the radius and T is the period
For this particular case, the radius will be the sum of the high of the satellite ( ) and the Earth radius (
) and the Earth radius ( ) :
) :


Then, equation 2 can be used:
 ⇒
 ⇒ 


Finally equation 1 can be used:
 
     

Hence, the acceleration of the satellite is 