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cosmiclog.msnbc.msn/_news/2011/11/08/8704993-passing-asteroid-puts-on-a-show

http://cosmiclog.msnbc.msn.com/_news/2011/11/08/8704993-passing-asteroid-puts-on-a-show. Review for Quiz. What is the speed that ALL electromagnetic radiation travels? 3 X 10 8 m/s. Review for Quiz. 2. If an object has a distance of 1 LD – In general how far away is it?.

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cosmiclog.msnbc.msn/_news/2011/11/08/8704993-passing-asteroid-puts-on-a-show

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  1. http://cosmiclog.msnbc.msn.com/_news/2011/11/08/8704993-passing-asteroid-puts-on-a-showhttp://cosmiclog.msnbc.msn.com/_news/2011/11/08/8704993-passing-asteroid-puts-on-a-show

  2. Review for Quiz • What is the speed that ALL electromagnetic radiation travels? 3 X 108 m/s

  3. Review for Quiz 2. If an object has a distance of 1 LD – In general how far away is it? The same as the distance to the moon! 384,408 km

  4. Review for Quiz 3. If an asteroid has a distance of 20.22 LD at its closest approach to earth, how far away is it? 20.22 LD = 20.22 (384,408 km)

  5. REVIEW FOR QUIZ 4. How long will it take a radar signal to get to this asteroid and back at its closest approach? • What is the relationship between speed, distance and time? • Rearrange this equation for t. • How fast are radar signals traveling?

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