Coulomb's Law
Coulomb's Law
F = k|q₁q₂|/r²
k = 8.99×10⁹ N·m²/C²
Force Between Charges
Easy
Find the force between +2μC and -3μC charges 0.1m apart
1
Apply formula
F = (8.99×10⁹)(2×10⁻⁶)(3×10⁻⁶)/(0.1)²
2
Calculate
F = 5.4 N (attractive)
Answer:
5.4 N attractive