True a proton carries a positive charge, a neutron carries a neutral charge and an electron carries a negative charge.
In normal fission reactors, the fuel used to start the nuclear fission is Uranium-235.
Generally, fuel rods enriched with uranium-235 are used to start the fission. When a nucleus of uranium-235 absorbs a neutron, it becomes unstable and then it breaks apart, producing two smaller nuclei, several neutrons and energy. The additional neutrons produced in the reaction are then absorbed by other nuclei of uranium-235, triggering other fission reactions, and so on.
I think it is A) but someone might need to double check that.
Explanation:
Given that,
Charge 1, 
Charge 2, 
Distance between charges, r = 0.0209 m
1. The electric force is given by :
F = -492.95 N
2. Distance between two identical charges, 
Electric force is given by :
Hence, this is the required solution.
<span>Sir Isaac Newton was the one who discovered that color is a </span><span>direct function of light by passing sunlight through a prism and observing the bands of the spectrum of colors through his newton of laws.</span>
