Question
Crossing this quantity with the B-field gives torque. For 10 points each:
[10h] Name this quantity that describes the strength and orientation of a magnetic field. This quantity equals current times enclosed area for a loop of current.
ANSWER: magnetic moment [or magnetic dipole moment; prompt on dipole moment; reject “electric dipole moment”; reject “magnetic flux”]
[10e] The intrinsic magnetic moment of an electron is approximately one times this physicist’s namesake magneton. Electrons orbit a positive nucleus in this Danish physicist’s model of the atom.
ANSWER: Niels Bohr [or Niels Henrik David Bohr; accept Bohr magneton or Bohr model]
[10m] A type of this phenomenon named after Joseph Larmor is caused by a magnetic moment in an external magnetic field. The gyroscopic form of this phenomenon is torque induced.
ANSWER: precession [accept Larmor precession; gyroscopic precession or torque-induced precession]
<Physics>
Summary
| 2024 ACF Fall at Cornell | fall | Y | 9 | 14.44 | 100% | 33% | 11% |
| 2024 ACF Fall at Ohio State | fall | Y | 8 | 11.25 | 100% | 13% | 0% |
| 2024 ACF Fall at Washington | fall | Y | 6 | 11.67 | 100% | 17% | 0% |
| 2024 ACF Fall at Georgia | fall | Y | 12 | 14.17 | 92% | 25% | 25% |
| 2024 ACF Fall at North Carolina | fall | Y | 9 | 10.00 | 89% | 11% | 0% |
| 2024 ACF Fall at Claremont Colleges | fall | Y | 5 | 20.00 | 100% | 60% | 40% |
| 2024 ACF Fall at Rutgers | fall | Y | 8 | 15.00 | 100% | 50% | 0% |
| 2024 ACF Fall at Illinois | fall | Y | 9 | 16.67 | 100% | 44% | 22% |
Data
| Illinois A | Chicago B | 10 | 10 | 10 | 30 |
| Illinois C | Purdue C | 0 | 10 | 0 | 10 |
| Notre Dame C | Indiana | 10 | 10 | 0 | 20 |
| Iowa A | Illinois D | 0 | 10 | 0 | 10 |
| Northwestern A | Iowa B | 0 | 10 | 10 | 20 |
| Northwestern B | WashU A | 0 | 10 | 0 | 10 |
| Notre Dame A | WashU B | 0 | 10 | 10 | 20 |
| Notre Dame B | SIUE | 0 | 10 | 0 | 10 |
| Purdue B | Illinois B | 0 | 10 | 10 | 20 |