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10 cards from this deck
Like charges repel; unlike charges attract
Force between charges at rest
F=kQ1Q2r2F = \frac{kQ_1Q_2}{r^2}F=r2kQ1Q2
9.0×1099.0 \times 10^99.0×109 N⋅m²⋅C⁻²
Force becomes 4 times weaker
Force becomes 9 times weaker
Attractive (pull towards each other)
Repulsive (push away from each other)
Electrostatic forces much stronger
Calculate each force separately, then add as vectors
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