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.

[Q]: 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.
[A]: Science


[Q]: One work by this composer is considered one of the most technically demanding of its kind and has a notable second movement with quick glissandi, but ends in its fourth with an unusual use of the rare Locrian mode. This mans other compositions include an E-minor work dedicated to Rostropovich, and a suite that contains a movement entitled The Glorious Departure of Lolli and the Cortge of the Sun. Besides his Symphony-Concerto and Scythian Suite, he also composed a piece commissioned by Paul Wittgenstein, as well as a ballet containing the movement Dance of the Knights, and a suite with a bell-filled Troika movement. He imitated Haydn in his Classical Symphony. For 10 points, name this Russian composer of The Love for Three Oranges and the Lieutenant Kije suite.
[A]: Fine Arts


[Q]: Harnik et al. argue against the anthropic principle by proposing a universe that lacks this. One instance of this interaction is modeled with a unitary matrix that includes three mixing angles and a complex phase that models CP violation. A vector minus axial Lagrangian for this force leads to maximal parity violation, making this force only affect left-handed particles. This force is responsible for quark flavor changing, was unified with electromagnetism by Glashow, Weinberg, and Salaam, and is transmitted by the massive W and Z bosons. For 10 points, name this fundamental force involved in radioactive decays.
[A]:
Science