Question
The “magnetic” type of these particles is a theorized alternative to computer bits. For 10 points each:
[10h] Name these topologically-protected soliton particles that were initially introduced to describe nucleons.
ANSWER: skyrmions [accept magnetic skyrmions]
[10e] Magnets without the “centro-” form of this property can stabilize magnetic skyrmions. s orbitals have the “spherical” form of this property with respect to the nucleus because electron density only depends on distance from the nucleus.
ANSWER: symmetry [or symmetrical; accept (non)centrosymmetrical, (non)centrosymmetry, spherical symmetry, or spherically symmetrical]
[10m] The skyrmion model of the nucleon reproduces the standard one-pion exchange potential, which improves on this spherically-symmetric screened Coulomb potential. Named for a physicist, it varies like “e to the minus kr all over r.”
ANSWER: Yukawa potential
<Physics>
Data
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total |
|---|---|---|---|---|---|
| Berkeley A | Michigan | 0 | 10 | 10 | 20 |
| Chicago A | Cornell B | 0 | 10 | 10 | 20 |
| Chicago B | NYU | 0 | 10 | 10 | 20 |
| Columbia B | Cornell A | 0 | 10 | 10 | 20 |
| Johns Hopkins | Minnesota B | 0 | 10 | 10 | 20 |
| McGill | Illinois | 0 | 10 | 0 | 10 |
| North Carolina A | Toronto A | 10 | 10 | 10 | 30 |
| Northwestern | Maryland | 10 | 10 | 0 | 20 |
| Stanford | Truman State | 0 | 10 | 10 | 20 |
| WUSTL A | Harvard | 0 | 10 | 10 | 20 |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2024 ACF Nationals | 04/21/2024 | Y | 10 | 20.00 | 100% | 80% | 20% |