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How many astronauts came from Harvard? A body is acted upon by two forces. F1 acts due west with 100 lb magnitude. F2 acts due south with 150 lb magnitude. The resultant is? How do you find the length from the vertex of a regular tetrahedron to the center point of its opposite face? Express as a sum of logarithms. ln 4x? What is the order of ALL college calculus courses? And please don't say calc 1 2 3 4.?