A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis.
Given data:
charges are = -10nC and + 20 nC
distance between them r = 15 cm
a) U=k.Q1.Q2/r. =(9*10^9)(+20*10^-9)(-10*10^-9)/(0.15) =
-1.2*10^-5 J
b) F=k*Q1*Q2/r^2
=(9*10^9)(20*10^-9)(10*10^-9)/(0.15)^2
=8*10^-5 N attractive force
c)From negative to the possitive change.
A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on...
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