instruction:
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.
question:
Spin foam serves as a model for 4-geometries used to dynamically observe the quantum form of this force. Mossbauer spectroscopy of an iron-57 gamma emitter was used to measure Doppler redshift associated with this force in the Pound-Rebka experiment, and two lead balls were used to construct a torsion balance to measure the magnitude of this force in the Cavendish experiment. Conceptualized by wells in spacetime, for 10 points, identify this weakest fundamental force that causes objects in the air to accelerate to Earth at 9.8 meters per second squared.
answer:
Science

question:
This philosopher advocated the adoption of a federal system in Considerations on the Government of Poland. He contrasted the natural and physical types of the title concept in his Discourse on Inequality. He also wrote an epistolary novel subtitled The New Heloise, and a treatise dealing with the education of the titular boy, Emile. His most famous work discusses a society controlled by the general will of its people and asserts that man is born free, but is everywhere in chains. For 10 points, name this French philosopher who wrote The Social Contract.
answer:
Social Science

question:
The interplay of separately lit spaces, in the foreground versus the background, was anticipated by the artist's earlier painting The Tapestry Weavers. The pairing of the nun and man-servant on the right of the canvas parallels the shadowy and silvery depiction of the royal couple in the center. Two large Ruben-like paintings hang above the scene as a young boy threatens to kick a contented looking dog and a painter tries to work in his studio. But the most enigmatic parts of the painting are the man in the open doorway in the background and the dwarf whose pose echoes that of the Infanta. FTP, identify this 1656 depiction of "The Maids of Honor" by Velazquez.
answer:
Fine Arts