# 4. Two small styrofoam balls are each given the same negative charge, and they experience a repulsive electrostatic...

###### Question:

4. Two small styrofoam balls are each given the same negative charge, and they experience a repulsive electrostatic force of 12 nN (12x10 9 N) when separated by a distance of 5.0 cm. How many excess electrons are on the two balls combined? (e 1.6x10 19 G, k8.99x10 A. 3.6x10s electrons B. 7.2x105 electrons C. 1.6×109 electrons D. 3.4x10 electrons E. 9.3x107 electrons

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