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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 |
| Joel Dicker | Southampton B | Manchester | 57 | -5 |
| Ian Saylor | Wisconsin B | Winona State | 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 |
| Samir Sarma | Georgia Tech D | Bruin A | 71 | 10 |
| Oscar O'Flanagan | Imperial A | NYU C | 71 | 10 |
| Alex Akridge | Indiana A | Indiana B | 71 | 10 |
| Ryan Rosenberg | NYU A | Columbia B | 71 | 10 |
| June Yin | WashU B | Missouri | 73 | 10 |
| Pranaav Senthilkumar | Cornell D | Binghamton A | 74 | -5 |
| Sam Macchi | Vassar A | Johns Hopkins A | 74 | 10 |
| Christopher Joseph | Notre Dame C | Northwestern 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 |
| Oscar Despard | Cambridge A | Cambridge E | 102 | 10 |
| Jerry Xu | Claremont B | Claremont A | 102 | -5 |
| Cade Reinberger | RIT A | ESF A | 102 | 10 |
| Christopher Dech | Brandeis A | Harvard 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 |
| 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 |
| Clete Reinberger | Valencia A | Florida B | 124 | 0 |
| Michael Eng | UNC C | Liberty C | 124 | 0 |
| Alexandra Knight | Liberty C | UNC C | 124 | 0 |
| Chris Yoo | William & Mary | UNC D | 124 | 0 |
| Benjamin Liu | Oxford C | LSE | 124 | 10 |
| Kai Madgwick | Manchester | Southampton B | 124 | 0 |
| Samuel Kassover | George Washington B | Penn B | 124 | 10 |
| Kevin Park | Claremont A | Claremont B | 124 | 10 |
| Rohan Shelke | UC Berkeley B | UC Berkeley A | 124 | 10 |
| Alvin Guo | Chicago D | Illinois B | 124 | 10 |
| Peter Smith | Binghamton A | Cornell D | 124 | 10 |
| Leo Law | Florida A | Florida State A | 124 | 10 |
| Aaron Marchand | Carleton | Minnesota B | 124 | 0 |
| 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 |
| Seth Webb | TAMU | ASU | 124 | 10 |