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]: The reciprocal relationship between the eigenvalues of the mass matrix of these particles is called the "seesaw mechanism"; the larger eigenvalue may be the mass of their "sterile" variety. One phenomenon predicted by Pontecorvo involving these entities was searched for by (*) MINOS. Reines and Cowan used an aqueous cadmium chloride solution to detect them, and other detectors tend to include large volumes of material, such as Super Kamiokande. For 10 points, name these leptons, the nearly massless products of radioactive decay whose varieties include the muon and tau and which are represented by the letter nu.
[A]: Science


[Q]: Sections of this work discuss early Roman law and the Germanic wadium, while it begins with a quote from the Havamal, a portion of the Edda. This work extends the author's first work, a collaboration in which he analyzed analogous ideas in Hinduism and Judaism. Marilyn Strathern critiqued this book from a gender perspective, while Sahlins' article on the "The Spirit of [It]", claimed that its author may have misunderstood an idea called the hau, in which the souls of the people involved in the title ritual become intermingled. The author views the title concept as multivalentthat is, a situation where a single action stands for all of society, called a total prestation. Drawing from Malinowski's study of the kula ring and the institution of the potlatch, for 10 points, identify this sociological work about the titular exchange by Marcel Mauss.
[A]: Social Science


[Q]: This god turned his daughter's suitor, Alvis, to stone. He once had a whetstone lodged in his forehead after a battle with the Mist Calf and the giant Hrungnir. Tanngnjostr and Tanngrisnir are the two goats that pull this god's chariot. On one occasion, he disguised himself as Freya in order to take back his prized possession. At Ragnarok, he will kill and be killed by Jormungandr, the Midgard Serpent. For 10 points, name this husband of Sif, who wields his hammer Mjollnir, as the Norse god of Thunder.
[A]:
Social Science