PHYSICS 110 Study Guide - Final Guide: Photovoltaic System, Unified Atomic Mass Unit, Hydrostatic Equilibrium
18 Aug 2016
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Inflationary model o a sudden period of expansion in the early universe o expansion by 1030 in small fraction of a second o could help explain smoothness of cosmic background o could also explain flatness of universe . Astronomy: practical uses: calendars, navigation, astronomy: the study of celestial objects o anything outside of earth"s atmosphere, distance to the sun = 5800 k- how do we know, chemistry- experimental science, astronomy- observational science. Light year: distance light travels in one year: light travels at 3 x 108 m/s, 3 x 105 km/s, how far does light travel in one year? o 9. 5 x 1015 m = 1 light year. Earth o if a star appears bright, it could be: Note: the lower the magnitude, the brighter the star. Scale is logarithmic because this is how the human eye works: angular separation: helps finds angles, depends on distance and physical separation o 1 fist approx.
