# physics

What is the magnitude of the electric field a distance 3.0mm from an electron?

Express your answer to two significant figures and include the appropriate units

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1. same old formula
E = k Qe/r^2 N/C

Qe = - 1.6*10^-19 Coulombs
r = 3 * 10^-3 meters
k = 9 * 10^9 N m^2/C^2
E is toward negative charge

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posted by Damon

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