How strong is the attractive force between a glass rod with a 0.700 μC charge and a silk cloth with a –0.600 μC charge, which are 12.0 cm apart, using the approximation that they act like point charges?

Explanation:

Assuming that thet act like point charges, the attractive force is given by Coulomb's law:

Where k is the Coulomb constant, and are the magnitudes of the point charges and d is the distance of separation between them. Thus, we replace the given values and get how strong is the attractive force between them:

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a skateboard rolling across the street - apex