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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. (-5[1])J-coupling represents the interaction between two values of this quantity, (15[1])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. (10[1])In an inhomogeneous magnetic field, this quantity took on two discrete values in the Stern-Gerlach experiment. In orbital (10[1])diagrams, values of this quantity are represented using up and down arrows. For 10 points, name this intrinsic angular momentum of a particle. ■END■ (10[1])

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

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Buzzes

PlayerTeamOpponentBuzzpointValue
Ahmed AzhariCambridgeBirmingham B20-5
Bill FudgeBathSouthampton3015
Mia Clark-WebbOxfordWarperial5510
Zhangir SatzhanovBirmingham ASouthperial7310
Elif CetinBirmingham BCambridge9710

Summary

TournamentEditionMatchHeardConv. %Power %Neg %Avg. Buzz
VAULT II at Georgia Tech2026-01-24✕6100%33%17%59.33
Triangle Cup2026-03-13✓3100%0%0%76.67
VAULT II at Eden Prairie HS2026-03-13✓367%0%0%77.50
VAULT II at McGill2026-03-13✓4100%0%0%85.50
VAULT II at UCSB2026-03-13✓5100%20%0%66.20
VAULT II Northern UK2026-04-24✓3100%33%0%61.00
VAULT II Southern UK2026-04-24✓4100%25%25%63.75
VAULT II at Harvard2026-04-30✓3100%33%33%68.33
VAULT II at MINT2026-06-19✓5100%0%20%91.40
VAULT II Stanford Online2026-07-17✕8100%25%38%65.88