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Two uncharged spheres are separated by 2.70 m. If 1.90 ? 1012 electrons are remo

ID: 1865066 • Letter: T

Question

Two uncharged spheres are separated by 2.70 m. If 1.90 ? 1012 electrons are removed from one sphere and placed on the other, determine the magnitude of the Coulomb force (in N) on one of the spheres, treating the spheres as point charges.
__ N
Two uncharged spheres are separated by 2.70 m. If 1.90 ? 1012 electrons are removed from one sphere and placed on the other, determine the magnitude of the Coulomb force (in N) on one of the spheres, treating the spheres as point charges.
__ N
Two uncharged spheres are separated by 2.70 m. If 1.90 ? 1012 electrons are removed from one sphere and placed on the other, determine the magnitude of the Coulomb force (in N) on one of the spheres, treating the spheres as point charges.
__ N

Explanation / Answer

Charge on one sphere is positive and on other is negative but equal in magnitude.

So magnitude of charge q = 1.9×10^12× 1.6×10^-19 = 3.04×10^-7 C

Now, Force F = kq^2/r^2 = 9×10^9×(3.04×10^-7)^2/2.7^2

F = 1.14×10^-4 N