0.18 Nis the answer to this question. The electrostatic force is known to be a branch of physics that will deal with different electrical charges that are already at rest. There are different reactions that may occur depending on what the electric charge will be exposed to.
For example, if there would be one positive and one negative, they would attract each other. If there is one positive and another positive, this means that the two things will repel each other. One example of this is when you repeatedly rub your carpet and there may be fibers that may start to become attracted by the clothes that you are wearing or even your slippers.