Three rocks, each of varying mass and volume, are released from a window at the same time. the window is at height h above the ground. which rock, if any, will strike the ground at the fastest speed? assume that air resistance affects the rocks equally. all three rocks will achieve the same speed the largest rock the most massive rock the densest rock

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.