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Observation of the formation of these phenomena is the general goal of nondestructive testing of ferrous compounds using MPI. In quasi-static conditions, the power dissipation due to these phenomena is inversely proportional to a constant that is 1 for a sheet and 2 for a wire. Waste sorting at recycling facilities use these phenomena to separate metallic materials. In transformers, power loss caused by these phenomena can be minimized using laminated conductors and ferrite cores. Generation of these phenomena is used in braking systems often employed by roller coasters. These phenomena form due to a magnetic response as a consequence of Lenz’s law. For 10 points, what phenomena consist of electric charges moving in closed loops during induction, named for their resemblance to whirlpools? ■END■
| California | 2025-02-01 | Y | 3 | 100% | 0% | 67% | 107.67 |
| Florida | 2025-02-01 | Y | 2 | 50% | 0% | 100% | 124.00 |
| Lower Mid-Atlantic | 2025-02-01 | Y | 6 | 67% | 0% | 17% | 83.50 |
| Midwest | 2025-02-01 | Y | 6 | 100% | 0% | 17% | 87.83 |
| North | 2025-02-01 | Y | 3 | 67% | 0% | 67% | 115.50 |
| Northeast | 2025-02-01 | Y | 5 | 80% | 0% | 60% | 106.25 |
| Overflow | 2025-02-01 | Y | 5 | 80% | 0% | 20% | 85.25 |
| South Central | 2025-02-01 | Y | 2 | 100% | 0% | 50% | 111.50 |
| Southeast | 2025-02-01 | Y | 4 | 100% | 0% | 0% | 75.75 |
| UK | 2025-02-01 | Y | 10 | 90% | 0% | 10% | 78.11 |
| Upper Mid-Atlantic | 2025-02-01 | Y | 8 | 100% | 0% | 13% | 88.13 |
| Upstate NY | 2025-02-01 | Y | 3 | 100% | 0% | 33% | 97.00 |
| Player | Team | Opponent | Buzz Position | Value |
|---|---|---|---|---|
| Stan Melkumian | Purdue | Georgetown B | 30 | 10 |
| Rasheeq Azad | UNC B | Liberty B | 45 | 10 |
| Michael Sun | Brandeis B | Harvard B | 47 | -5 |
| Delia Cropper | Oxford A | Southampton A | 56 | 10 |
| Ian Saylor | Wisconsin B | Winona State | 57 | -5 |
| Joel Dicker | Southampton B | Manchester | 57 | -5 |
| Nicholas Nguyen | Florida B | Valencia A | 57 | -5 |
| Stefan Stealey-Euchner | ASU | TAMU | 57 | -5 |
| Swapnil Garg | UC Berkeley A | UC Berkeley B | 59 | -5 |
| Rachel Bentham | Cambridge B | Warwick B | 65 | 10 |
| Rafael Castro | Imperial B | Sheffield | 65 | 10 |
| Jerry Vinokurov | John Jay College | Maryland A | 65 | 10 |
| Alec Riso | Cornell C | RIT B | 65 | 10 |
| Nathan Sheffield | MIT A | Tufts A | 67 | 10 |
| Hrishit Chaudhuri | NYU B | Yale A | 67 | 10 |
| Parker McCoig | Tennessee A | Vanderbilt A | 68 | 10 |
| Hamish Campbell | Durham | Oxford B | 68 | 10 |
| Alex Baker | Cambridge C | Warwick A | 69 | 10 |
| Aidan Jones | Liberty A | Wake Forest | 70 | 10 |
| Michael Zhou | Georgia Tech A | Georgia Tech C | 70 | 10 |
| Alex Akridge | Indiana A | Indiana B | 71 | 10 |
| Ryan Rosenberg | NYU A | Columbia B | 71 | 10 |
| Samir Sarma | Georgia Tech D | Bruin A | 71 | 10 |
| Oscar O'Flanagan | Imperial A | NYU C | 71 | 10 |
| June Yin | WashU B | Missouri | 73 | 10 |
| Christopher Joseph | Notre Dame C | Northwestern A | 74 | -5 |
| Sam Macchi | Vassar A | Johns Hopkins A | 74 | 10 |
| Pranaav Senthilkumar | Cornell D | Binghamton A | 74 | -5 |
| Kaiser Xiao | UCLA | UCSD | 75 | 10 |
| Linus Luu | Cambridge D | Bristol | 83 | 10 |
| Zachary Leblang | Penn B | George Washington B | 84 | -5 |
| Andrew Wang | Illinois A | Chicago A | 85 | 10 |
| Jacob Harl | Missoui S&T | WashU A | 85 | 10 |
| Gus Vanskike | Maryland B | Penn A | 87 | 10 |
| Azura Gollamudi | Northwestern B | Notre Dame B | 88 | 10 |
| Elliott Gomes | Dartmouth A | Brown A | 88 | -5 |
| Jiping Fang | Illinois C | Chicago C | 89 | 10 |
| Jackson McDonald | Alabama A | Louisville A | 94 | 10 |
| Juan Landaeta | Florida State A | Florida A | 95 | -5 |
| Arjun Bothra | Haverford A | Columbia C | 96 | 10 |
| Jacob Finley | Notre Dame A | Stanford B | 99 | 10 |
| Owen Gilroy | Texas B | Texas A | 99 | 10 |
| Jerry Xu | Claremont B | Claremont A | 102 | -5 |
| Koji Bilbao | Duke | Virginia Tech A | 102 | 10 |
| Oscar Despard | Cambridge A | Cambridge E | 102 | 10 |
| Christopher Dech | Brandeis A | Harvard A | 102 | -5 |
| Cade Reinberger | RIT A | ESF A | 102 | 10 |
| JD Kroth | Iowa State | Wisconsin A | 107 | 10 |
| Nikhil Chellam | Northwestern A | Notre Dame C | 115 | 0 |
| Connor Ronan | South Carolina | Virginia A | 116 | -5 |
| Shardul Parthasarathy | Illinois B | Chicago D | 116 | -5 |
| Chase Woodson | Virginia A | South Carolina | 117 | 10 |
| Yash Tiwari | Minnesota B | Carleton | 117 | -5 |
| Nikhil Nair | BU | UMass Boston | 117 | 10 |
| Jerry Zhang | Harvard B | Brandeis B | 117 | 10 |
| Aum Mundhe | Rutgers A | George Washington A | 121 | 10 |
| Kevin Park | Claremont A | Claremont B | 124 | 10 |
| Rohan Shelke | UC Berkeley B | UC Berkeley A | 124 | 10 |
| Michael Eng | UNC C | Liberty C | 124 | 0 |
| Alexandra Knight | Liberty C | UNC C | 124 | 0 |
| Chris Yoo | William & Mary | UNC D | 124 | 0 |
| Alvin Guo | Chicago D | Illinois B | 124 | 10 |
| Aaron Marchand | Carleton | Minnesota B | 124 | 0 |
| Henry Bon | Winona State | Wisconsin B | 124 | 10 |
| Brielle Rach | Iowa | Georgetown A | 124 | 10 |
| Kai Madgwick | Manchester | Southampton B | 124 | 0 |
| Samuel Kassover | George Washington B | Penn B | 124 | 10 |
| Clete Reinberger | Valencia A | Florida B | 124 | 0 |
| Arjun Nageswaran | Harvard A | Brandeis A | 124 | 10 |
| Mason Yu | Brown A | Dartmouth A | 124 | 0 |
| Seth Webb | TAMU | ASU | 124 | 10 |
| Leo Law | Florida A | Florida State A | 124 | 10 |
| Benjamin Liu | Oxford C | LSE | 124 | 10 |
| Peter Smith | Binghamton A | Cornell D | 124 | 10 |