Answer:
Anybody which is in state of rest ,will be in rest if we don't apply any external force ...
Answer:
For the first one its about 25 feet
Explanation:
Answer:

Explanation:
Let the charge on the ball bearing is q.
charge on glass bead, Q = 20 nC = 20 x 10^-9 C
Force between them, F = 0.018 N
Distance between them, d = 1 cm = 0.01 m
By use of Coulomb's law in electrostatics

By substituting the values


Thus, the charge on the ball bearing is 
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Hope that helps, Good luck! (: