Physics 114

Extra Credit #1

Due July 25, 2007

Team #____________

Member #1_____________________

Member #2_____________________

Member #3_____________________

Rules:

-Collaborations between team members are encouraged; however one or two authors will be responsible for one problem and may be asked to explain it.

-The authors should present the solution on a blank sheet with their names on it. Submissions from a same team should be stapled together

-Solutions should include “self-explained” diagrams/sketches, with minimal wording. Neat presentation will count toward the problem grading.

1.- Can you explain the phenomenon of global warming using thermodynamic terms we have learned about in chapters 16-19?

2.- Explain a method to estimate the temperature of a piece of wood of mass M that is being cut in half by an electric saw, without touching either element.

3.- Design one experiment to demonstrate the connection between the average kinetic energy of a liquid and its temperature, using two identical transparent cups, for example.