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Unformatted text preview: desired units. To remove km, we multiply a conversion factor which has km in the denominator. We have 3.84 10 5 km = 3.84 10 5 km (1 AU/1.50 10 8 km) = 2.56 103 AU b) The speed of light is about 3.0 10 8 m/s. Express the speed of light in astronomical units per minute. 1 km = 1000 m, thus 1 AU = 1.5 10 11 m. We multiply two conversion factors, one of which converts m to AU, and the other of which converts s to min. 3.0 10 8 m/s = 3.0 10 8 m/s (1 AU/1.50 10 11 m) (60 s/1 min) = 1.20 101 AU/min...
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Document
 Fall '08
 Field
 Physics, Work

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