Round 8: Tossup 20
A constant describing the interaction between two values of this quantity is determined from the dihedral angle in the Karplus equation. J-coupling represents the interaction between two values of this quantity, which returns to its equilibrium value during T1 and T2 relaxation. Applying an RF pulse “flips” states corresponding to values of this quantity in (*) NMR. In an inhomogeneous magnetic field, this quantity took on two discrete values in the Stern-Gerlach experiment. In orbital diagrams, values of this quantity are represented using up and down arrows. For 10 points, name this intrinsic angular momentum of a particle. ■END■
ANSWER: spin angular momentum [accept spin-spin coupling or spin relaxation or spin flip or magnetic dipole moment; prompt on magnetic moment; prompt on magnetization before mentioned; prompt on just coupling before mentioned by asking “what quantity’s interaction is represented by coupling?”; reject “electric dipole moment”]
<Science - Chemistry, Rohan Ganeshan> | VAULT II Packet 08
= Average correct buzzpoint
Buzzes
Summary
| Tournament | Edition | Match | Heard | Conv. % | Power % | Neg % | Avg. Buzz |
|---|---|---|---|---|---|---|---|
| VAULT II at Georgia Tech | 2026-01-24 | ✕ | 6 | 100% | 33% | 17% | 59.33 |
| Triangle Cup | 2026-03-13 | ✓ | 3 | 100% | 0% | 0% | 76.67 |
| VAULT II at Eden Prairie HS | 2026-03-13 | ✓ | 3 | 67% | 0% | 0% | 77.50 |
| VAULT II at McGill | 2026-03-13 | ✓ | 4 | 100% | 0% | 0% | 85.50 |
| VAULT II at UCSB | 2026-03-13 | ✓ | 5 | 100% | 20% | 0% | 66.20 |
| VAULT II Northern UK | 2026-04-24 | ✓ | 3 | 100% | 33% | 0% | 61.00 |
| VAULT II Southern UK | 2026-04-24 | ✓ | 4 | 100% | 25% | 25% | 63.75 |
| VAULT II at Harvard | 2026-04-30 | ✓ | 3 | 100% | 33% | 33% | 68.33 |
| VAULT II at MINT | 2026-06-19 | ✓ | 5 | 100% | 0% | 20% | 91.40 |
| VAULT II Stanford Online | 2026-07-17 | ✕ | 8 | 100% | 25% | 38% | 65.88 |