Answer:
1
Explanation:
Let's call the magnitude of the charge of 10000 electrons
.
Because A loses q, it has a net charge
(electrons are negative; losing them creates positive charges). Conversely, B has gained q, so it has a charge of
. The distance between them is 1 m.
By Coulomb's law, the force between them is


When A loses an additional 10000 electrons, the charge on it becomes
while that on B is
. The distance is now 2 m.
The force is now



