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        Find the electric force between two protons separated by a distance of 1 fermi (1 fermi = 10-15 m). The protons in a nucleus remain at a separation of this order.
3 years ago

Jitender Pal
365 Points
										Sol. Charge on each proton = a= 1.6 10^-19 coulomb
Distance between charges = 10 * 10^-15 metre = r
Force = kq^2/r^2 = 9 * 10^9 * 1.6 * 1.6 * 10^-38/10^-38 = 9 * 2.56 * 10 = 230.4 Netwon


3 years ago
Arun Kumar
IIT Delhi
256 Points
										Hello$\\E={kq^2 \over r^2} \\E={8.98 *10^{9} (1.67*10^{-19})^2 \over 10^{-30}} \\E=250.44$Thanks & RegardsArun KumarBtech, IIT DelhiAskiitians Faculty

3 years ago
Apoorva Arora
IIT Roorkee
181 Points
										force is given by$F=\frac{kq_{1}q_{2}}{r^{2}}$putting all the valuesF= 230.4 newtonsThanks and RegardsApoorva AroraIIT RoorkeeaskIITians Faculty

3 years ago
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