Extra credit can be submitted any time before July 29, which is the last day for grade submission.
Extra credit can be submitted any time before July 29, which is the last day for grade submission.
Extra Credit Problem 1 (worth up to 5 percentage points toward your total grade)
Extra Credit Problem 2 - compute the elastic modulus of a rubber band, following the "Reinforcement Activity" at the bottom of this link. (worth up to 5 percentage points toward your total grade)