In a thundercloud there may be an electric

charge of 54 C near the top of the cloud and
−54 C near the bottom of the cloud.
If these charges are separated by about
4 km, what is the magnitude of the electric force between these two sets of charges?
The value of the electric force constant is
8.98755 × 10
9
N · m2
/C
2
.
Answer in units of N

1 answer

Just use (k*|q1|*|q2|)/r^2

It should come out as 1,638,427.5N