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

This artist only completed the preparatory sketches for the epic Opening of the Doors of the Spanish Inquisition. This artist showed a cart stopped next to a gray building emitting white smoke in The Lime Kiln. He painted an unusual still-life of severed limbs called Anatomical Pieces, and he featured horses in his paintings Derby at Epsom and Horse Frightened By Lightning. A horse rearing away from an unseen attacker appears in his The Charging Chasseur. He studied bodies in the morgue of the Hospital Beaujon for his most famous work, which sees a man waving a red handkerchief on the top right and a bloody hatchet implies cannibalism. For 10 points, name this French Romantic painter of The Raft of the Medusa.
Fine Arts

writer from this country wrote about "the Sorceror" who calls his third testicle his sister Estrella in the novel The Lizard's Tale. Another writer from here wrote about anti-hero Remo Erdosain, who gets caught up with a man known as The Astrologer, in the novel The Seven Madmen. In addition to Luisa Valenzuela and Roberto Arlt, another writer of this nation wrote the novel The Angel of Darkness and told of surrealist painter Juan Pablo Castel who murders his beloved Maria Iribarne in the novel El Tnel. Another novel from this nation centers around a man who gives the name Faustine to a woman who speaks of Canada, only to discover that the two suns and two moons he observes on the supposed island of Villings are the result of twin realities. In addition to Ernesto Sabato and Adolfo Bioy Casares, another writer from here tells of a man who travels with Sergeant Cruz and battles a black payador. FTP, name this birthplace of the author of Martin Fierro and the author of "The Garden of Forking Paths. "
Literature