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Q₂= -4 C
r= 3 cm= 0,03 m
dit: F=...?
Jawab:
F= k.Q₁.Q₂/r²
F= 9.10⁹.(+5)(-4)/0,03²
F= -2.10¹⁰/1.10⁻⁴
F= -2.10¹⁴ N