Packet 4: Bonus 9

This quantity can be written as the sum of two dyadic products minus a term proportional to the energy density of a field. For 10 points each:
[10h] Name this quantity whose divergence is subtracted by a time derivative term to obtain the Lorentz force density of an electromagnetic field.
ANSWER: Maxwell stress tensor [reject “(electromagnetic) stress–energy tensor”]
[10m] The time derivative of a quantity named for this physicist is subtracted to obtain force density. This physicist’s namesake theorem describes conservation of energy for electromagnetism.
ANSWER: John Henry Poynting
[10e] The Maxwell stress can be interpreted as the electromagnetic density of this classical quantity’s flux. This quantity’s conservation is implied by Newton’s laws of motion.
ANSWER: momentum [or linear momentum]
<Editors, Physics> | M. Playoffs 4 (Editors 4)

HeardPPBE %M %H %
248.7579%8%0%

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Conversion

TeamOpponentPart 1Part 2Part 3TotalParts
British ColumbiaPittsburgh0101020ME
BruinPenn State0000
Chicago AToronto A001010E
GeorgetownMaryland B0000
Georgia Tech BGeorgia Tech A001010E
HarvardUC Berkeley A0101020ME
Illinois AMIT001010E
Illinois BNorthwestern B001010E
Johns HopkinsColumbia B001010E
Maryland AColumbia A001010E
MichiganStanford B001010E
NYU AIndiana001010E
PurdueChicago B001010E
RutgersNYU B001010E
Stanford AVirginia Tech001010E
SwarthmoreNorth Carolina001010E
TexasCambridge001010E
UC Berkeley BNorthwestern A001010E
UCFCornell0000
UCLAToronto B0000
VanderbiltGeorgia Tech C0000
VirginiaOhio State001010E
WashUMinnesota001010E
WaterlooBrown001010E

Summary

TournamentEditionMatchHeardPPBE %M %H %
Main Site2026-04-17✓248.7579%8%0%