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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 |
| Nicholas Nguyen | Florida B | Valencia A | 57 | -5 |
| Ian Saylor | Wisconsin B | Winona State | 57 | -5 |
| Joel Dicker | Southampton B | Manchester | 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 |
| Hrishit Chaudhuri | NYU B | Yale A | 67 | 10 |
| Nathan Sheffield | MIT A | Tufts 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 |
| Samir Sarma | Georgia Tech D | Bruin A | 71 | 10 |
| Oscar O'Flanagan | Imperial A | NYU C | 71 | 10 |
| Ryan Rosenberg | NYU A | Columbia B | 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 |
| Elliott Gomes | Dartmouth A | Brown A | 88 | -5 |
| Azura Gollamudi | Northwestern B | Notre Dame B | 88 | 10 |
| 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 |
| Koji Bilbao | Duke | Virginia Tech A | 102 | 10 |
| Christopher Dech | Brandeis A | Harvard A | 102 | -5 |
| Oscar Despard | Cambridge A | Cambridge E | 102 | 10 |
| Cade Reinberger | RIT A | ESF A | 102 | 10 |
| Jerry Xu | Claremont B | Claremont A | 102 | -5 |
| 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 |
| Nikhil Nair | BU | UMass Boston | 117 | 10 |
| Jerry Zhang | Harvard B | Brandeis B | 117 | 10 |
| Yash Tiwari | Minnesota B | Carleton | 117 | -5 |
| Aum Mundhe | Rutgers A | George Washington A | 121 | 10 |
| Clete Reinberger | Valencia A | Florida B | 124 | 0 |
| Leo Law | Florida A | Florida State 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 |
| Henry Bon | Winona State | Wisconsin B | 124 | 10 |
| Arjun Nageswaran | Harvard A | Brandeis A | 124 | 10 |
| Mason Yu | Brown A | Dartmouth A | 124 | 0 |
| Brielle Rach | Iowa | Georgetown A | 124 | 10 |
| Kai Madgwick | Manchester | Southampton B | 124 | 0 |
| Samuel Kassover | George Washington B | Penn B | 124 | 10 |
| Peter Smith | Binghamton A | Cornell D | 124 | 10 |
| Kevin Park | Claremont A | Claremont B | 124 | 10 |
| Rohan Shelke | UC Berkeley B | UC Berkeley A | 124 | 10 |
| Seth Webb | TAMU | ASU | 124 | 10 |
| Benjamin Liu | Oxford C | LSE | 124 | 10 |
| Aaron Marchand | Carleton | Minnesota B | 124 | 0 |