Physics, 14.03.2020 02:12 Vanesssajohn6294
A rectangular billboard 6 feet in height stands in a field so that its bottom is 12 feet above the ground. A nearsighted cow with eye level at 4 feet above the ground stands x feet from the billboard. Express θ, the vertical angle subtended by the billboard at her eye, in terms of x. Then find the distance x0 the cow must stand from the billboard to maximize θ.
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The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
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According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring
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A rectangular billboard 6 feet in height stands in a field so that its bottom is 12 feet above the g...
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