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Verified answer
r = 100 cm → F = 9 N
r' = 300 cm → F' = __?
gaya elektrostatik Coulomb
F = k Q q / r²
gaya berbanding terbalik dengan kuadrat jaraknya
jika jarak dijadikan 300/100 = 3 kali semula, maka gaya listrik nya menjadi (⅓)² = 1/9 kali gaya semula atau
F' = (1/9) × (9 N) = 1 N ← jwb
Verified answer
Gaya Coulomb.F / F' = (r' / r)²
9 N / F' = [3 m / (1 m)]²
F' = 1 N