Question

In close-packed systems, the [emphasize] opposite of this process occurs if the third derivative of the interatomic potential at the equilibrium distance is greater than zero. Glass-ceramics such as Sitall and Zerodur that resist this process are used in telescope mirrors. This process is near-absent in an alloy containing 64 percent iron and 36 (-5[1])percent nickel. (10[1])In an isotropic material, the volumetric and linear parameters (10[1])characterizing (10[1])this process differ by a factor of three. Different rates of this process cause a bimetallic strip to bend. (-5[1])A coefficient describing this process (10[1])is calculated by the percent change in volume (10[1])divided by the change in temperature. (-5[1])For 10 points, name this phenomenon in which applying heat changes a material’s size. ■END■ (10[2]0[2])

ANSWER: thermal expansion [accept negative thermal expansion; accept coefficient of thermal expansion; prompt on expansion; prompt on descriptions of expanding or changing size before “size” is read]
<Physics>
= Average correct buzz position

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Summary

2023 ACF Winter @ Columbia11/11/2023Y978%0%33%86.57

Buzzes

PlayerTeamOpponentBuzz PositionValue
Aum MundheRutgers AYale A53-5
Richard NiuCornell CNYU A5510
Forrest WeintraubColumbia AColumbia B6410
Carter McLeanPrinceton AHaverford6510
Vincent ZhangPenn BYale B84-5
Mark TawfikRutgers BYale C8910
Danny HanPenn ARowan A9710
Jupiter DingPrinceton BBard A103-5
Max HauslerVassarNYU B1180
Cyrus HodgsonBard APrinceton B1180
Lydia TarekegnYale ARutgers A11810
Andrew MinagarYale BPenn B11810