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.

This quantity for an atomic nucleus is determined using Weizscker's [VAHYTS-zek-uhrs] formula. The no hair theorem states black holes are completely characterized by their angular momentum, charge, and this quantity. The oscillation period of a spring equals two pi times the square root of this quantity over the spring constant. The theoretical value of this quantity for gluons is zero. Linear momentum equals this quantity times velocity. For 10 points, name this quantity measured in kilograms.
Science

An important critique of this work was published five years after its author's death and asserts that much of this work was based on the made-up stories of two teenagers; that critique is by (*) Derek Freeman. Published with a forward by Franz Boas, it was based on its author's time living on the island of Ta'u where she observed that teenagers living in an open and non-secretive society had relatively stress-free lives compared to their American counterparts. For 10 points, name this influential anthropology book by Margaret Mead.
Social Science

According to one text, this god's son is Loridi and his teacher was Loricus, whom this god slew at the age of twelve, while a different text claims that this god was raised by Hlora and Vingnir. This god rescued Aurvandil the Bold, the husband of the sorceress Groa, causing part of a shield to be stuck in his head, and one Poetic Edda consists entirely of this god arguing with the ferryman Harbath. This father of Thurd has the servant Thalfi, and he caused the deaths of Alviss and Hrungnir. The Grimnismol states that the best of halls is this god's hall of Bilskirnir, from which he can be pulled by two goats on his chariot. For ten points, name this husband of Sif and serial slayer of giants, the Norse god of thunder.

Social Science