Round 3: Tossup 9
An “apparent” form of this quantity equals the velocity gradient to the power of the behavior index minus one in the Ostwald-de Waele power law. One form of this quantity is divided by another to calculate Trouton’s ratio. Forces named for this quantity dominate in the boundary layer. When this quantity is zero, the Navier-Stokes equations simplify to the Euler equations. In (*) thixotropic materials, this quantity decreases when a stress is applied. This quantity does not change under shear stress for a Newtonian fluid. This quantity comes in “dynamic” and “kinematic” forms and is zero for superfluids. For 10 points, name this measure of a fluid’s resistance to flow. ■END■
ANSWER: viscosity [accept dynamic or kinematic viscosity; accept viscous forces]
<Science - Physics, Aveek Sarkar> | VAULT II Packet 03
= Average correct buzzpoint
Buzzes
| Player | Team | Opponent | Buzzpoint | Value |
|---|---|---|---|---|
| Ben Richards | Sheffield A | Manchester B | 55 | 15 |
| Pen Hughes | Edinburgh | Sheffield B | 77 | 10 |
| Rick Line | Chimera | Manchester A | 99 | 10 |
Summary
| Tournament | Edition | Match | Heard | Conv. % | Power % | Neg % | Avg. Buzz |
|---|---|---|---|---|---|---|---|
| VAULT II at Georgia Tech | 2026-01-24 | ✓ | 6 | 100% | 33% | 50% | 62.83 |
| Triangle Cup | 2026-03-13 | ✓ | 3 | 100% | 0% | 0% | 71.33 |
| VAULT II at Eden Prairie HS | 2026-03-13 | ✓ | 3 | 67% | 33% | 33% | 73.50 |
| VAULT II at McGill | 2026-03-13 | ✓ | 4 | 100% | 50% | 25% | 79.75 |
| VAULT II at UCSB | 2026-03-13 | ✓ | 5 | 100% | 40% | 40% | 75.20 |
| VAULT II Northern UK | 2026-04-24 | ✓ | 3 | 100% | 33% | 0% | 77.00 |
| VAULT II Southern UK | 2026-04-24 | ✓ | 4 | 100% | 0% | 25% | 84.00 |
| VAULT II at Harvard | 2026-04-30 | ✓ | 4 | 100% | 25% | 25% | 78.25 |
| VAULT II at MINT | 2026-06-19 | ✓ | 5 | 100% | 0% | 40% | 91.80 |
| VAULT II Stanford Online | 2026-07-17 | ✓ | 8 | 100% | 50% | 38% | 78.13 |