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 force is represented by a first derivative with respect to position in the harmonic oscillator equation. In one model, this force stems from tiny electrostatic repulsions. It can be understood as the parallel shear component of the contact force, whose other component is typically calculated as mg cosine theta. It is calculated from a coefficient, symbolized mu, multiplied by the normal force. Rolling motion is affected by the "kinetic" type of this force, which is known as "drag" in fluids. For 10 points, name this force that resists the motion of objects against one another.
[A]: Science


[Q]: In this novel, one source of religious authority is the towns vicar Parson Irwine, who cares for his invalid sister Anne. The title character is loved by Mary Burge, the daughter of his employer, and studies with a schoolmaster named Bartle Massey. Set in the town of Hayslope at the end of the 18th century, it features a Methodist preacher named Dinah Morris who eventually marries the title character after the woman he loves is sentenced to death for murdering her illegitimate child. FTP, name this work which features Arthur Donnithorne and Hetty Sorrel, the first novel written by George Eliot, whose title character is an upstanding carpenter.
[A]: Literature


[Q]: One major pathway involving this compound is the tuberoinfundibular one that transfers it from the hypothalamus to the pituitary gland. This compound is involved in voluntary motor control via its nigriostriatal pathway, and it binds with lactotrophs in order to inhibit the secretion of prolactin, which is a major antagonist of it. It is the immediate precursor of norepinephrine in the epinephrine synthesis pathway. Antagonists of this neurotransmitter are used to treat schizophrenia, and deficiency of this neurotransmitter can lead to Parkinsons disease. For 10 points, name this neurotransmitter associated with the brain's pleasure center whose precursor is L-dopa.
[A]:
Science