Previous tossup - Next tossup

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 (10[1])experiment. In orbital diagrams, values of this quantity are represented using up and down arrows. (-5[1])For 10 points, name this intrinsic angular momentum of a particle. (10[1])■END■ (10[3])

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

Back to tossups

Buzzes

PlayerTeamOpponentBuzzpointValue
Darsh MehrotraWashingtonKentucky7010
Aditya Rao (Challenger-Strawberry Park)CaliforniaGeorgia A85-5
Ryan LiuNorth CarolinaGeorgia B9610
Cameron VanceGeorgia ACalifornia9710
Swastik RoyTexas AGeorgia C9710
Ritam Setu (St. Mark's)Texas BNew York9710

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