PLEASE HELP! THIS IS TO BE TURNED IN IN ABOUT 3 MINUTES How must the net force be acting on an object in order for the object to have a circular motion? What is this type of force called?​

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.