Task: Text Categorization
Input (English): Various phenomena associated with this force can be described by the creation and annihilation of modes called shearons. Defects along a surface can lead to energetic corrugations resulting in this force according to the Tomlinson model, which describes it on the atomic level. The triboelectric effect is charging as a consequence of this force, whose skin variety occurs at a body-fluid interface. It is independent of surface area according to one of Amontons Laws, and superlubricity is the total absence of this force. For 10 points, identify this force which is perpendicular to the normal force and provides resistance when two surfaces slide over each other.
Output (English): Science