AP Physics 2mediummcq1 pt
A −2.0 µC charge and a +2.0 µC charge are 0.50 m apart (k = 9.0×10⁹). The force is
A.0.14 N, attractive
B.0.14 N, repulsive
C.0.072 N, attractive
D.0.72 N, attractive
Explanation
Core Concept
F = k|q₁q₂|/r² = (9.0×10⁹)(4.0×10⁻¹²)/0.25 = 0.144 N, attracting.
Correct Answer
A0.14 N, attractive
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