no 19 bantu jawab pliss

Diket :
k = 9×10^9
q1 = 4×10^-8
q2 = 8×10^-8
r = 60 cm -- 0,6 m

Dit : F =...?
Jwb :
F = k q1×q2 / r^2
F = 9.10^9 × 4.10^-8 × 8.10^-8 / (0,6)^2
F = 9.10^9 × 4.10^-8 × 8.10^-8 / 0,36
F = 36.10^9 × 10^-8 × 8.10^-8 / 0,36
F = 800 × 10^-7 (36 dibagi dgn 0,36=100)
F = 8×10^-5

Semoga membantu
Maaf kalau salah