Teacher:In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Teacher: Now, understand the problem? Solve this instance: This phenomenon originates from asperities which can be modeled with the Archard equation. On an atomic scale, this is described by the Tomlinson model, including a namesake parameter that, when greater than one, results in the stick-slip variety of this phenomenon. Reye hypothesized that this is proportional to volume of wear debris. Amontons' second law states that it is independent of the area of the contact surface. It is equal to the normal force times mu, its namesake coefficient, which has static and kinetic varieties. For ten points, name this force that acts opposite motion.
Student:
Science