Answer:
82700 m
Explanation:
Applying Coulomb's law of electrostatic
F = kq²/r².......................... Equation 1
Note: Both charges are the same
Where F = force of attraction, q = negative charge, r = distance between the charges, k = coulomb's constant
make r the subject of the equation
r = √(kq²/F).............. Equation 1
Given: F = 19 N, q = 3.8 C, k = 9×10⁹ Nm²/C²
Substitute these values into equation 2
r = √(3.8²×9×10⁹/19)
r = √(68.4×10⁸)
r = 8.27×10⁴ m
r = 82700 m
Hence the two charges are 82700 m apart
