Answer:
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Answer:
FORCE - rate of change of momentum, ie its changing velocity [change in velocity is of more concern] NEWTON
WORK - product of force and displacement, ie [velocity may be constant or variable but change in position with certain force is of more concern] JOULES
I hope you understood from this.. 
 
        
             
        
        
        
Answer:

Explanation:
The change in potential energy can be expressed as:

where K is a constant with a value of  , q1 and q2 are the charges of the proton and the electron and r is the distance between them.
, q1 and q2 are the charges of the proton and the electron and r is the distance between them.
The charge for the proton is  and the charge for the electron is
 and the charge for the electron is  .
.
Converting r=1.0nm to m:

Replacing values:


 
        
             
        
        
        
Keep cool by being active at night, whereas some other desert animals get away from the sun's heat by digging underground burrows.