neutrons - 2025 Penn Bowl - Buzzpoints App

Question

Control rods made from boron-10 or a silver-indium-cadmium alloy are used in nuclear reactors due to their high cross sections for the “capture” of these particles. For 10 points each:

[10e] Name these particles which are “moderated” by materials like water and graphite. Along with protons, these particles compose the nucleus of an atom.

ANSWER: neutrons [accept neutron moderation or neutron capture; prompt on n]

[10m] Neutron moderators may slow neutrons below the range of these phenomena. The Breit-Wigner formula may be used to compute cross-sections of these phenomena, which appear as peaks on scattering diagrams.

ANSWER: resonances

[10h] The thermal neutron cross section exhibits this dependence on the velocity v. This dependence may be derived from the Breit-Wigner distribution by assuming energies far below the resonance.

ANSWER: one over v [or one divided by v; or the reciprocal of v; or v to the power of minus one]

<JC, Physics>

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Summary


2025 Penn Bowl - BU	11/01/25	Y	4	10.00	100%	0%	0%
2025 Penn Bowl - CWRU	11/01/25	Y	3	10.00	100%	0%	0%
2025 Penn Bowl - Mainsite (UPenn)	11/01/25	Y	6	11.67	100%	17%	0%
2025 Penn Bowl - Murray State	11/08/25	Y	2	10.00	100%	0%	0%
2025 Penn Bowl - Northwestern	10/25/25	Y	4	12.50	100%	25%	0%
2025 Penn Bowl - Online	11/08/25	Y	2	10.00	100%	0%	0%
2025 Penn Bowl - Ottawa	11/01/25	Y	7	10.00	100%	0%	0%
2025 Penn Bowl - Stanford	10/25/25	Y	4	10.00	100%	0%	0%
2025 Penn Bowl - UK	11/01/25	Y	9	13.33	100%	22%	11%
2025 Penn Bowl - UNC	11/01/25	Y	3	10.00	100%	0%	0%
2025 Penn Bowl - WashU	11/01/25	Y	2	10.00	100%	0%	0%

Data


I've been running into you in my lead plumbocene what could have benzene	Brown	10	0	0	10
RIT	MIT A	10	0	0	10
Maryland B	Columbia A	10	0	0	10
JHU A	NYU B	10	0	0	10
John Jay	Maryland C	10	10	0	20
Maryland A	Columbia B	10	0	0	10
NYU A	JHU B	10	0	0	10
Mount Sinai	Swarthmore	10	0	0	10
Texas B	Oklahoma	10	0	0	10
Texas A	Central Oklahoma	10	0	0	10
Northwestern B	Illinois	10	0	0	10
Indiana	Purdue A	10	10	0	20
UChicago C	Purdue B	10	0	0	10
UChicago A	UChicago B	10	0	0	10
New Young Whigs of America	Wake Up Paddington A Washington Mystery	10	0	0	10
rusty shackleford	abg academy	10	0	0	10
Aweille Kevin Fan osti continue comme ça	Toronto Sunshine Bubbles	10	0	0	10
Carleton A	McGill Fartlets	10	0	0	10
McGill B	Toronto G	10	0	0	10
Ottawa 67s	Toronto Operation PBSuccess	10	0	0	10
Queen's is monitoring the situation	#OpenToBuzz	10	0	0	10
Toronto Murder on the Rider Express	Guelph perfomative male competition	10	0	0	10
Waterloo you are crooked	Toronto E	10	0	0	10
In Search of Lost Clues	Berkeley A	10	0	0	10
Berkeley B	Free Win	10	0	0	10
Stanford A	The best time to buzz was twenty clues ago. The second best time to buzz is now	10	0	0	10
Berkeley C	Stanford B	10	0	0	10
Bristold	Chimp Brisket	10	0	0	10
Galactic Ombudsmen	Coughing Baby	10	0	10	20
1. Wawa 2. Blank Street 151. Black Sheep at Kings Cross rail	Hail to the Sheaf	10	0	0	10
Paul Quifford, or, It Was a Dark and Stormy Tournament	Of Mice and Penn	10	0	0	10
Quiztian Bale in Ratman Begins	Penn and the Art of Tossup-Bonus cycle Maintenance	10	0	0	10
Knorr Stock Clue	The Bit and the Penndulum	10	10	0	20
To buzz is to be perceived	Alas poor Warwick, I knew him Edinburgh	10	10	0	20
Washed Scrubs	question mark	10	0	0	10
Burnaburiash's Lapis Lazuli	why is it called a score clue if nobody scores points on it	10	0	0	10
Brandeis	Yale	10	0	0	10
Michigan A	Michigan C	10	0	0	10
Ohio State A	Ohio State B	10	0	0	10
Michigan B	Pittsburgh	10	0	0	10
Planck Sinatra	Wise Duke	10	0	0	10
UNC A	UNC B	10	0	0	10
VT A	VT B	10	0	0	10
Truman State	WashU Kiki	10	0	0	10
Harvard	MIT B	10	0	0	10
WashU Bouba	VJ Edgecombe School of Interior Design - Edwardsville	10	0	0	10