Question

Diketahui Q1=4.10^min 9 C, Q2=9.10^min9 C, r=2 cm, K=9.10^9 Nm²/C²
ditanya F=?


tolong bantuannya kak!

Answer 1

Verified answer

Listrik Statis - IX SMP

Diketahui
  Q1 = 4 . 10^-9
  Q2 = 9 . 10^-9
  r = 2 cm = 2 . 10^-2 cm
  K = 9 . 10^9

Ditanya
   F ... ?

Dijawab
   F = K . Q1 . Q2 / r^2
   F = 9 . 10^9 . 4 . 10^-9 . 9 . 10^-9 / (2 . 10^-2)^2 
   F = 9 . 4 . 9 . 10^9 . 10^-9 . 10^-9 . 10^4 / 2
   F = 162 . 10^-5 N

Semoga terbantu 

Answer 2

F = K Q1 Q2 / r^2( kuadrat )
F = 9.10^9 x 4.10^-9 x 9.10^-9 / ( 2.10^-2 )^2
F = 9.10^9 x 4.10^-9 x 9.10^-9 / 4.10^-4
F = 9.10^9 x 10^-9 x 9.10^-5
F = 81 . 10^-5