Solve the all parts of following problem given below:
Problem: A 6.75 nC charge is located 1.87 m from a 4.26 nC point charge.
Part A: Find the magnitude of the electrostatic force that one charge exerts on the other.
Part B: Is the force attractive or repulsive?
I don't just need an answer, work and explanations/walkthrough would be much appreciated! Thanks.