. Charles de Coulomb measured attractive and repulsive forces caused by charged objects. Which statement is true about the electromagnetic force?​

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

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.