Question
In a cyclotron, this force points in the opposite direction of the velocity of the particle, for 10 points each:
[10h] Identify this recoil force on an accelerating charged particle that is the result of the emission of radiation. This force is proportional to the charge squared times jerk.
ANSWER: Abraham-Lorentz force [or Lorentz-Abraham force; or Abraham-Lorentz-Dirac force; accept radiation reaction force; accept radiation damping force; accept self-force]
[10m] The total power radiated by an accelerating particle moving nonrelativistically can be calculated by this formula, the derivative of the Abraham-Lorentz formula. It states that the time-averaged power is proportional to acceleration squared.
ANSWER: Larmor formula
[10e] The relativistic generalization of the Larmor formula is given by a “retarded” one of these functions, named for Liénard and Wiechert. Ohm’s law states that this quantity is equal to current times resistance.
ANSWER: voltage [or electric potential; prompt on retarded potential; reject “potential energy”]
<Leo Law, Physics>
Summary
| 2023 Penn Bowl @ Waterloo | 10/28/2023 | Y | 4 | 17.50 | 100% | 75% | 0% |
| 2023 Penn Bowl @ FSU | 10/28/2023 | Y | 2 | 10.00 | 100% | 0% | 0% |
| 2023 Penn Bowl (Harvard) | 10/21/2023 | Y | 3 | 6.67 | 67% | 0% | 0% |
| 2023 Penn Bowl (Mainsite) | 10/21/2023 | Y | 7 | 17.14 | 100% | 57% | 14% |
| 2023 Penn Bowl (Norcal) | 10/28/2023 | Y | 2 | 15.00 | 100% | 50% | 0% |
| 2023 Penn Bowl (South Central) | 10/28/2023 | Y | 3 | 20.00 | 100% | 33% | 67% |
| 2023 Penn Bowl (UK) | 10/28/2023 | Y | 5 | 12.00 | 80% | 40% | 0% |
| 2023 Penn Bowl @ UNC | 10/28/2023 | Y | 3 | 16.67 | 100% | 33% | 33% |
Data
| Columbia A | Cornell A | 10 | 10 | 10 | 30 |
| Cornell B | Columbia B | 0 | 10 | 10 | 20 |
| JHU B | Swarthmore | 0 | 0 | 10 | 10 |
| Pitt | NYU | 0 | 10 | 10 | 20 |
| John Jay A | RIT | 0 | 10 | 10 | 20 |
| Rutgers | UMD A | 0 | 0 | 10 | 10 |
| UMD B | JHU A | 0 | 0 | 10 | 10 |