An H-R Diagram (Hertzsprung and Russell) is used to classify stars based on their size and brightness. The main sequence stars, such as our sun, are the medium stars, and take up the middle f the diagram, while the giants and dwarves are located on either side. http://www.eso.org/public/outreach/eduoff/cas/cas2002/cas-projects/bulgaria_comaber_1/hr_local.gif <- shows what an H-R diagram looks like.
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main-sequence stars
8.44 kph Algebraic Steps / Dimensional Analysis Formula5.25 mi/hr*5280 ft/hr 1 mi/hr*1 m/hr 3.2808 ft/hr*1 km/hr 1000 m/hr=8.449055999 km/hr Direct Conversion Formula 5.25 mi/hr*1.609344 km/hr 1 mi/hr=8.449055999 km/hr
47.22421061 mi/hr. See complete algebraic steps below: 76 km/hr*1 m/hr 0.001 km/hr*1 ft/hr 0.3048 m/hr*1 mi/hr 5280 ft/hr=47.22421061 mi/hr
interpret it by letters...........
hr. NOT ho