The bolts on a cylinder head of an engine require a torque of 95 N*m. If a wrench is 28 cm (or 0.28 m) long, what force perpendicular to the wrench must the mechanic exert at its end?

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.