7. Watch the video “Cosmic Voyage” it is very instructive and helps you visualize the multiple length scales we will be working with in this class. Submit your answers to the video response document afterwards. You can watch the video here (it has three parts)
http://www.youtube.com/watch?v=cMRoDyc8W2k
http://www.youtube.com/watch?v=MCPBbjea1-g
http://www.youtube.com/watch?v=xkfyoF6Gbj0

8. Watch carefully all the video tutorials. They have conceptual information and examples of how to solve problems.