Your 20-kg brother Mickey is on a see-saw. if you have the mass of 50-kg and are 2 meters away from the center of the see-saw, how far out would mickey have to sit if he wants to apply the same force onto that you apply to him

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.