An advertisement claims that a car can stop on a dime. If the car is 850 kg and is traveling at 45.0 km/h, what is the magnitude of the net force needed to stop in the distance equal to the diameter of a dime (1.8 cm)

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.