The distance between two static point charges in vacuum is 10 cm. The electrostatic attraction between them is 9 times 10 to the negative fourth power. When they join together, they will become a point charge with a charge of 3 times 10 to the negative eighth power Coulomb. How much is the charge of the two points?

The distance between two static point charges in vacuum is 10 cm. The electrostatic attraction between them is 9 times 10 to the negative fourth power. When they join together, they will become a point charge with a charge of 3 times 10 to the negative eighth power Coulomb. How much is the charge of the two points?

One is the negative octave of minus two times ten, and the other is the negative octave of five times ten

In vacuum, there are two point charges 0.18m apart. The charge of Q1 is + 1.8 × 10-12c. The gravitational force between the two point charges is f = 1.0 × 10-12n?

From Coulomb's law f = kq1q2r2, the solution is: Q2 = fr2kq1 = 1 × 10 − 12 × 0.1829 × 109 × 1.8 × 10 − 12, C = 2.0 × 10-12c; because the force between two charges is gravitational force, Q1 and Q2 are heterogeneous charges, Q1 is positively charged, so Q2 must be negatively charged; answer: Q2 carries 2.0 × 10-12 & nbsp; C, and is negatively charged