| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| The Greek letter mu represents the coefficient of this force that resists the motion of surfaces in contact | friction DD | $2,400 | DJ | PHYSICS | 2026-03-02 | #9511 | |
| Condensed-matter physics deals with superfluidity, in which certain liquids flow without this | friction | $1,200 | DJ | PHYSICS | 2014-09-23 | #6902 | |
| A machine developed by Sidney James measures slippery surfaces' COF, coefficient of this | friction | $1,200 | DJ | PHYSICS | 2005-09-16 | #4830 |