Question: The theory of special relativity finds a convenient formulation in Minkowski spacetime, a mathematical structure that combines three dimensions of space with a single dimension of time. In this formalism, distances in space can be measured by how long light takes to travel that distance, e.g., a light-year is a measure of distance, and a meter is now defined in terms of how far light travels in a certain amount of time. Two events in Minkowski spacetime are separated by an invariant interval, which can be either space-like, light-like, or time-like. Events that have a time-like separation cannot be simultaneous in any frame of reference, there must be a temporal component (and possibly a spatial one) to their separation. Events that have a space-like separation will be simultaneous in some frame of reference, and there is no frame of reference in which they do not have a spatial separation. Different observers may calculate different distances and different time intervals between two events, but the invariant interval between the events is independent of the observer (and his velocity).
Try to answer this question if possible: What will events that have a time-like separation always be in some frame of reference?
Answer: unanswerable
Question: Oklahoma holds eleven public regional universities, including Northeastern State University, the second-oldest institution of higher education west of the Mississippi River, also containing the only College of Optometry in Oklahoma and the largest enrollment of Native American students in the nation by percentage and amount. Langston University is Oklahoma's only historically black college. Six of the state's universities were placed in the Princeton Review's list of best 122 regional colleges in 2007, and three made the list of top colleges for best value. The state has 55 post-secondary technical institutions operated by Oklahoma's CareerTech program for training in specific fields of industry or trade.
Try to answer this question if possible: What university has the largest Native American enrollment in the US?
Answer: Northeastern State University
Question: New Haven was the subject of Who Governs? Democracy and Power in An American City, a very influential book in political science by preeminent Yale professor Robert A. Dahl, which includes an extensive history of the city and thorough description of its politics in the 1950s. New Haven's theocratic history is also mentioned several times by Alexis de Tocqueville in his classic volume on 19th-century American political life, Democracy in America. New Haven was the residence of conservative thinker William F. Buckley, Jr., in 1951, when he wrote his influential God and Man at Yale. William Lee Miller's The Fifteenth Ward and the Great Society (1966) similarly explores the relationship between local politics in New Haven and national political movements, focusing on Lyndon Johnson's Great Society and urban renewal.
Try to answer this question if possible: To which prominent conservative, that authored God and Man at Yale, did New Haven provide residence in 1951?
Answer: William F. Buckley, Jr.
Question: For example, one might refer to the A above middle C as a', A4, or 440 Hz. In standard Western equal temperament, the notion of pitch is insensitive to "spelling": the description "G4 double sharp" refers to the same pitch as A4; in other temperaments, these may be distinct pitches. Human perception of musical intervals is approximately logarithmic with respect to fundamental frequency: the perceived interval between the pitches "A220" and "A440" is the same as the perceived interval between the pitches A440 and A880. Motivated by this logarithmic perception, music theorists sometimes represent pitches using a numerical scale based on the logarithm of fundamental frequency. For example, one can adopt the widely used MIDI standard to map fundamental frequency, f, to a real number, p, as follows
Try to answer this question if possible: Human perception of musical intervals is approximately what?
Answer:
logarithmic