P114-Morning –Summer’07

Extra Credit #4

Due August 20, 2007

Team #____________

Member #1_____________________

Member #2_____________________

Member #3_____________________

1.- Artificial Sunset: Why is the sky blue? Why is the sunset reddish? Design one experiment to simulate both the sunset and blue sky in the lab.

2.- Solar energy: Do some research and provide numbers about how large a solar panel need to be so to provide enough energy to run a computer a day with 8 hours of sun light. Assume a computer needs 100kWh a day.

3.- Space communication: show your calculations of how long does it take for an EM signal to travel to and from the Moon; repeat for Mercury. How can we overcome these limitations for the future of passenger space travel?