If both strings are the same length then the electrostatic force of each charge on the other is equal in magnitude and directed horizontally. The gravitational pull of the earth on each charge is ...

For example, when you apply a force to push a door open. Vector quantities have both a magnitude and a direction. Vector quantities are represented using arrows. The larger the arrow the greater ...

Free body diagrams close free body diagramA simplified drawing of an object or system showing the forces acting on it ... is drawn to scale like this, the magnitude of the resultant vector ...