Question

For flows displaying this property, the Navier–Stokes equation reduces to Burgers’s equation. The pressure is often described as a Lagrange multiplier that enforces this property, which causes the Langevin (“lanj-VAYN”) equation to contain a transverse projection operator. The n equals zero polytrope has an interior with this property. An approximation (-5[1])named for a pseudo (-5[1])form of this property can be derived solely by assuming small pressure perturbations. (-5[1])The simplest form of Bernoulli’s principle applies to flows with this property. Flows (10[2])with this property have small values of [read (-5[1])slowly] “one over density times the derivative of density with respect to pressure,” which (10[1])is (10[1])denoted beta. The divergence of (10[1])the velocity (10[1])is zero (10[1])in (10[1])flows (10[2])with (10[4])this property, as is the time derivative of density. For 10 points, name this property of fluids with a (10[1])constant (10[5]0[3])density. ■END■

ANSWER: incompressible [or incompressibility; accept pseudo-incompressible approximation]
<Physics>
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Summary

2025 ACF Nationals04/19/2025Y2195%0%19%113.25

Buzzes

PlayerTeamOpponentBuzz PositionValue
Kunaal ChandrashekarToronto BChicago A48-5
Jeremy CummingsWUSTL AIllinois B52-5
Nikhil ChellamNorthwesternUCF65-5
Jason ZhangToronto CNYU7810
James WangOttawaWaterloo A7810
Andy HuffLSENorth Carolina A86-5
Jonathan HuangMITCornell B10010
James Ah YongWaterloo BGeorgia Tech10110
David BassJohns HopkinsVirginia Tech10610
Aryan DesarapuMichiganBritish Columbia10810
Andrew WangIllinois AChicago B11010
Benjamin ChapmanToronto ATexas11110
Geoffrey WuColumbia AWinona State11210
Derek ChenColumbia BUC Berkeley A11210
Skand ParvatikarArizona StateNorth Carolina B11310
Michał GerasimiukStanfordGeorgia State11310
Shiva TegullaUCFNorthwestern11310
Leo LawFloridaYale11310
Aum MundheRutgersVirginia13210
Adam FineChicago AToronto B13310
Nitin RaoHarvardVanderbilt1330
Gavin MarkoffVanderbiltHarvard1330
Gabriel DubowskiIllinois BWUSTL A13310
Rasheeq AzadNorth Carolina ALSE13310
Richard NiuCornell AMaryland13310
Isaac MammelMarylandCornell A1330
Calvin BostlemanOhio StateUC Berkeley B13310