no 12 dan 13 bantu ya kakak please

Q1 = Q2 = 3×10^-9 C
r = 2×10^-2 m
F = __?

gaya
F = k Q1 Q2 / r²
F = 9×10^9 • (3×10^-9)² / (2×10^-2)²
F = 2,025×10^-4 N ← jwb


9 • 3² / 2² = 20,25 !!