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F2 = k x 2Q x 2Q / R^2
= k x 4 x Q x Q /R^2
F2 = 4F
berarti gaya coulomb nya adalah 4 kali gaya coulomb awal
F1=F
F2=...?---->Q=2Q
Jawab:
karena F berbanding lurus dengan Q maka:
F=Q
F1/F2=Q1/Q2
F/F2=Q/4Q
4F=F2
F2=4 F