Coulomb's Law (Electric Force) Video Lessons

Concept

# Problem: Two charged dust particles exert a force of 7.2×10-2 N on each other. What will be the force if they are moved so they are only one-eighth as far apart?

###### FREE Expert Solution

The force between charges is given by coulomb's law.

Coulomb's law:

$\overline{){\mathbf{F}}{\mathbf{=}}\frac{\mathbf{k}{\mathbf{q}}_{\mathbf{1}}{\mathbf{q}}_{\mathbf{1}}}{{\mathbf{r}}^{\mathbf{2}}}}$

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###### Problem Details

Two charged dust particles exert a force of 7.2×10-2 N on each other. What will be the force if they are moved so they are only one-eighth as far apart?