hunk traveled 550 km at an average speed of 90 km per hour if Tim completed the same distance with the 1 hour and 30 minutes lasted hunk what was Tims average speed for the whole journey

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.