Question
This scientist names a ratio equal to [read slowly] “2 C-sub-4-4 over C-1-1 minus C-2-2,” which quantifies how anisotropic a material is. For 10 points each:
[10h] Name this scientist who also developed a namesake diode that allows current to reliably flow backwards once a certain reverse voltage is applied.
ANSWER: Clarence Zener [accept Zener ratio or Zener diode]
[10m] Zener and J. Herbert Hollomon created a formula that measures how much this quantity’s rate depends on temperature. The “engineering” form of this value denoted epsilon equals the change in length over the total length.
ANSWER: strain [accept strain rate or engineering strain]
[10e] Zener also developed a model of viscoelastic solids that uses a combination of these devices and dashpots. These devices exhibit a restoring force proportional to their displacement according to Hooke’s law.
ANSWER: springs [prompt on simple harmonic oscillators]
<Physics>
Summary
| 2024 ACF Winter at UC Berkeley | 2024-11-16 | Y | 3 | 23.33 | 100% | 100% | 33% |
| 2024 ACF Winter at Clemson | 2024-11-16 | Y | 8 | 10.00 | 88% | 0% | 13% |
| 2024 ACF Winter at Lehigh | 2024-11-16 | Y | 7 | 18.57 | 100% | 43% | 43% |
| 2024 ACF Winter at Northwestern | 2024-11-16 | Y | 9 | 20.00 | 100% | 67% | 33% |
| 2024 ACF Winter at Ohio State | 2024-11-16 | Y | 7 | 18.57 | 100% | 43% | 43% |
| 2024 ACF Winter at Online | 2024-11-16 | Y | 8 | 17.50 | 100% | 50% | 25% |
| 2024 ACF Winter at UBC | 2024-11-16 | Y | 2 | 20.00 | 100% | 50% | 50% |
| 2024 ACF Winter at Central Florida | 2024-11-16 | Y | 5 | 16.00 | 80% | 60% | 20% |
| 2024 ACF Winter at Oxford | 2024-11-16 | Y | 10 | 21.00 | 100% | 70% | 40% |
| 2024 ACF Winter at Brandeis | 2024-11-16 | Y | 10 | 14.00 | 90% | 40% | 10% |
Data
| A Brandeis Supreme | Yale B | 0 | 0 | 10 | 10 |
| Amherst A | Clark A | 0 | 10 | 10 | 20 |
| Bowdoin B | Boston University A | 0 | 10 | 10 | 20 |
| BU B | Bowdoin A | 0 | 0 | 0 | 0 |
| Yale A | Brown A | 0 | 10 | 10 | 20 |
| Tufts B | Carabrandeis | 0 | 0 | 10 | 10 |
| Diamond Brandeis | Williams A | 0 | 0 | 10 | 10 |
| Brandeises Brew | Northeastern A | 0 | 0 | 10 | 10 |
| Harvard A | Tufts A | 0 | 0 | 10 | 10 |
| MIT A | Yale C | 10 | 10 | 10 | 30 |