Explain how to determine the amount of error between a vector addition and the real results

What causes the formation of ocean currents?

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.

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?