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What is the magnitude of the electrostatic force each experiences?

When point charges q1 = +8.5 µC and q2 = +5.2 µC are brought near each other, each experiences a repulsive force of magnitude 0.72 N.?

  • When point charges q1 = +8.5 µC and q2 = +5.2 µC are brought near each other, each experiences a repulsive force of magnitude 0.72 N. Determine the distance between the charges. I ...show more

  • Answer:

    Coulomb's law, force of attraction/repulsion F = kQ₁Q₂/r² Q₁ and Q₂ are the charges in coulombs F is force in newtons r is separation in meters k = 8.99e9 Nm²/C² watch the units. You plugged in numbers without regard to the units. That doesn't work. F = kQ₁Q₂/r² 0.72 = (8.99e9)(8.5e-6)(5.2e-6) / r² r² = (8.99e9)(8.5e-6)(5.2e-6) / 0.72 = 0.552 r = 0.743 m

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