Packet 8: Bonus 20
Arnold Sommerfeld studied hypothetical elliptical orbits in this system. For 10 points each:
[10e] Name this atom described by the Bohr model, which consists of one electron orbiting one proton.
ANSWER: hydrogen [or H-one]
[10h] While studying the Bohr model, Sommerfeld discovered this dimensionless coupling constant for the electromagnetic force, whose value is very close to 1/137.
ANSWER: fine structure constant [prompt on Sommerfeld constant]
[10m] The fine structure constant quantifies the splitting of these features whose “emission” and “absorption” examples result from electronic transitions. The Rydberg formula describes these features in hydrogen, which has a 21-centimeter one.
ANSWER: spectral lines [accept emission lines or absorption lines or 21-centimeter line]
<Physics — Sarah Benner> | SHOW-ME Four Packet 8
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 11 | 15.45 | 100% | 36% | 18% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| USN A | Merrol Hyde A | 10 | 0 | 10 | 20 | EM |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Rube Goldberg XIX | 11/20/2025 | ✓ | 7 | 10.00 | 100% | 0% | 0% |
| SHOW-ME Four Nationwide HS | 11/20/2025 | ✓ | 3 | 26.67 | 100% | 100% | 67% |
| SPOOKY IX | 11/20/2025 | ✓ | 1 | 20.00 | 100% | 100% | 0% |