Aladder 16 m. long rests against a frictionless wall and makes a angle of 60° with the horizontal. a 180 n. man is on the ladder, m t the top. what horizontal force is needed at the bottom of the ladder in on to prevent. the ladder from slipping? neglect the weight of the ladder.

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.