Please help me with my physics homework
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Please help me with my physics homework

[From: ] [author: ] [Date: 11-11-14] [Hit: ]
F=(6.7E-11)(9E-31)^2/(.F=5.as you can see,......
Part 1: assume that in interstellar space the distance between 2 electrons is about 0.1 cm. the electric force between the two electrons is repulsive.

Part 2: Calculate the electric force between these two electrons. Use 9x10^9 for the coulomb constant. The magnitude of the charge of the electron is -1.6x10^-19 C (answer in units of N)

Part 3: Calculate the gravitational force between these two electrons. The universal gravitational constant is 6.7x10^-11 and the mass of the electron is 9x10^-31 kg. (answer in units of N)

-
F=k*q*q/r^2 -- coulombs law.
F=9E9*(-1.6E-19)^2/(.001)^2
F=2.304E-22N

F=Gm1*m2/r^2 -- newtons law of gravity
F=(6.7E-11)(9E-31)^2/(.001)^2
F=5.427E-65N

as you can see, electrical force is much much greater than gravitational force

make it a good day
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