Atennis ball strikes a wall. Which are the following are true about the ball-wall interaction? Select all that apply. The force of the ball on the wall is equal and opposite to the force of the wall on the ball.
The impulse of the ball on the wall is equal and opposite to the impulse of the wall on the ball.
The time of contact for both the ball and the wall are the same.
The collision can be classified as an explosion

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.