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: For a uniformly magnetized sample, where H is the magnetic field strength, this quantity can be defined as F - HMV. In an ordinary system, its proper variables are temperature and pressure, and it equals F + PV, where F is the Helmholtz free energy. For a reaction, if the change in this quantity is negative, then the reaction will be spontaneous. FTP, often symbolized by either phi or G, identify this type of free energy named for an American physicist.
Student:
Science