calculate the magnitude of electrostatic force between a proton and an electon separated by adhik distance 0.5 . Given that magnitude of charge of proton and electron to be 1.6*10^-19 C each and -m²C^-2
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n the diagram at right, the (repulsive) electric force from the other electron opposes the (attractive) gravitational force from the same electron. The other electron is not shown in the diagram.
We want the two forces to balance, that is:
Felec = Fgrav
The electric force is given by Coulomb's Law, while the gravitational force is given by Newton's Law of Universal Gravitation. If:
m = the mass of an electron = 9.1 x 10-31 kg
q = the electric charge on an electron = 1.6 x 10-19 C
r = the distance between the two electrons (which we want to figure out)
G = Universal Gravitation Constant = 6.67 x 10-11 N m2/kg2
k = 8.9 x 109 N m2/C2
this becomes:
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