When two balls collide, the momentum of the balls after the collision is explained by O the law of conservation of momentum
O Newton's first law of motion
O Newton's second law of motion
O Newton's third law of motion

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.

What is an example of static friction

What happens when the vapor pressure of a liquid is equal to the external pressure?