Explanation:
(a)   Since, it is given that the blocks are identical so distribution of charge will be uniform on both the blocks.
Hence, final charge on block A will be calculated as follows.
          Charge on block A =  
                                            = 4.35 nC
Therefore, final charge on the block A is 4.35 nC.
(b)   As it is given that the positive charge is coming on block A
. This means that movement of electrons will be from A to B.
Thus, we can conclude that while the blocks were in contact with each other then electrons will flow from A to B.
 
        
                    
             
        
        
        
This is True
Kinetic energy is the energy of motion. The bicyclist is in motion as he pedals up the tall hill. Therefore, the bicyclist contains kinetic energy.
 
        
                    
             
        
        
        
the answer could be (very basic) since options arent given