PLEASE HELP due today

A5 nc point charge is at the origin and a second 3 nc point charge is on the x-axis at x = 0.8 m. find the magnitude and direction of the electric field on the x-axs at x = 0.2 m. you may express the direction by letting positive field mean the positive x direction

How do you tell if someone actually cares about you? and just say they do?

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.