It should be at about 65J. Not sure, hope I helped.
Answer:
C. 2 and 4
Explanation:
my teacher went over it and the answer was that
Answer:
Explanation:
Given
for 
Sphere are 
when sphere
apart suppose deflection is 
We know

Where F=force between charged particle
Deflection


thus 
for 



(b)for
deflection Potential 
Electric Potential is 

where V=voltage
k=constant
r=distance between charges
Put value of Q in equation 1


thus 
therefore


