Question

Two photons are released when these particles annihilate with an electron. For 10 points each:
[10m] Name these particles which are released along with an electron neutrino in beta plus decay.
ANSWER: positrons [prompt on anti-electrons]
[10e] Positron emission occurs when beta plus decay occurs inside this object. This center of the atom contains protons and neutrons.
ANSWER: nucleus [or nuclei]
[10h] Positrons are also formed in this process, in which a boson becomes a particle and its antiparticle. The opposite of annihilation, this process is represented by a squiggly line splitting into two straight lines on a Feynman diagram.
ANSWER: pair production
<Physics>

Back to bonuses

Summary

2024 ACF Fall at CornellfallY817.50100%63%13%
2024 ACF Fall at Ohio StatefallY820.00100%75%25%
2024 ACF Fall at WashingtonfallY618.33100%83%0%
2024 ACF Fall at GeorgiafallY1113.64100%27%9%
2024 ACF Fall at North CarolinafallY1028.00160%120%0%
2024 ACF Fall at Claremont CollegesfallY520.00100%60%40%
2024 ACF Fall at RutgersfallY820.00100%75%25%
2024 ACF Fall at IllinoisfallY918.89100%78%11%

Data

James Madison ALiberty B010010
Appalachian State AJames Madison B010010
Liberty ADuke A1010020
William & MaryLiberty C1010020
NC StateUNC D010010
Virginia Tech ATusculum010010
VCUUNC B1010020
UNC CUNC A1010020
UNC CUNC A1010020
UNC CUNC A1010020
UNC CUNC A1010020
UNC CUNC A1010020
UNC CUNC A1010020
UNC CUNC A1010020
UNC CUNC A1010020
Duke BVirginia Tech B1010020