A small cork with an excess charge of +5.0 µC
is placed 0.12 m from another cork, which
carries a charge of −3.2 µC.
What is the magnitude of the electric force
between the corks? The Coulomb constant is
8.98755 × 109 N · m2
/C
2
.
Answer in units of N

Question

A small cork with an excess charge of +5.0 µC
is placed 0.12 m from another cork, which
carries a charge of −3.2 µC.
What is the magnitude of the electric force
between the corks? The Coulomb constant is
8.98755 × 109 N · m2
/C
2
.
Answer in units of N

theeric · Answer

Here's my hint to you, since you're not online at the moment:

$F=k\dfrac{q_1\ q_2}{x^2}$
Here,
$k$ is the Coulomb constant,
$q_1$ is the charge of one cork, and $q_2$ is the charge of the other,
and $x$ is the distance between the charges (so, between the corks).