Answer:
A) only charged objects
Explanation:
The electrostatic force between two objects is given by
[tex]F=k\frac{q_1 q_2}{r^2}[/tex]
where
k is the Coulomb's constant
q1, q2 are the charges of the two objects
r is the separation between the two objects
We have:
- If the charges have same sign (q1 and q2 have same sign), the force is repulsive
- if the charges have opposite sign (q1 and q2 have opposite sign), the force is attractive
If one of the object is neutral, its charge is zero: q=0, so the electrostatic force is also zero.
So, the correct option is
A) only charged objects
because all the other options (B, C and D) involve the presence of neutral particles, for which q=0 and so the electrostatic force is also zero.
