Bonus

Answer the following about experimental evidence for the theory of general relativity, for 10 points each.
[10e] Relativity could explain the anomalous precession of this planet’s perihelion. An earlier explanation attempted to insert an extra planet between the sun and this planet.
ANSWER: Mercury
[10m] Gravity Probe B confirmed this effect by using gyroscopes to test how rotation affects a gravitational field. Rotating bodies perturb spacetime in this effect.
ANSWER: Lense–Thirring (“LEN-suh–TEER-ring”) effect [or Lense–Thirring precession; accept rotational frame-dragging]
[10h] The ESA is sending two of these objects to the ISS to measure local position invariance as part of the ACES (“aces”) mission. A statement named for these objects says that a quantity measured by them is proportional to the length of their world lines, and is often added to the postulates of special relativity.
ANSWER: atomic clocks [accept clock hypothesis or clock postulate or Atomic Clock Ensemble in Space]
<Physics>
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Conversion

TeamOpponentPart 1Part 2Part 3TotalParts
Chicago AWUSTL B10101030EMH
Chicago BRIT1010020EM
Columbia ABritish Columbia1010020EM
Cornell ALSE10101030EMH
FloridaMIT100010E
Georgia TechColumbia B1001020EH
HarvardWaterloo A1001020EH
Illinois APenn State1010020EM
Iowa StateCornell B001010H
Johns HopkinsUC Berkeley B1001020EH
North Carolina AMaryland10101030EMH
NorthwesternOhio State10101030EMH
RutgersNYU1001020EH
Toronto BMinnesota10101030EMH
UC Berkeley AToronto A10101030EMH
VirginiaToronto C100010E
Virginia TechGeorgia State100010E
WUSTL AIndiana100010E
Waterloo BTexas1001020EH
YaleIllinois B100010E

Summary

TournamentExact Match?HeardPPBEasy %Medium %Hard %
2025 ACF NationalsYes2020.0095%45%60%