Kinetic energy = 0.5 * m * v²
m mass
v velocity
If the velocity stays the same and the kinetic energy goes down by a factor of 2, the mass must go down by a factor of 2 also.
        
             
        
        
        
Explanation:
Formula depicting relation between total flux and total charge Q is as follows. 
                (Gauss's Law)
    (Gauss's Law)
Putting the given values into the above formula as follows.
             Q =  
 
                 = 
                 = 
                 = -8.4 nC
Therefore, when the unknown charge is q  then,
          -14.0 nC + 33.0 nC + q = -8.4 nC
                q = -27.4 nC
Thus, we can conclude that charge on the third object is -27.4 nC.
 
        
             
        
        
        
<span>16.82 x 0.04 = 0.67 rad
I hope I helped if you really need I can explain to you how I got that answer but Thats correct im sorry it took 2 days for me to find this answer but if you or anybody else still needs the answer for this question here it is :) have a fantastic day guys Spring Break is coming up soon :)</span>