Question
A "metric" named for this physicist requires negative energy density that could be achieved using exotic matter or a Casimir vacuum. For 10 points each:
[10h] Identify this physicist who names a solution to the Einstein field equations in which a moving "bubble" compresses spacetime in front of it and stretches spacetime behind it.
ANSWER: Miguel Alcubierre [or Alcubierre metric; or Alcubierre warp drive]
[10e] The Alcubierre "warp drive" would be capable of moving faster than this "cosmic speed limit," which equals about 3 times 10 to the 8th meters per second.
ANSWER: speed of light in vacuum [prompt on c]
[10m] A spaceship using the Alcubierre drive would be in this condition, which in general relativity describes objects experiencing zero net force as they travel along a geodesic in curved spacetime.
ANSWER: free fall [or free falling]
<June Yin , Science - Physics - Relativity>
Summary
| 2023 NASAT | 06/17/2023 | Y | 9 | 15.56 | 100% | 33% | 22% |
Data
| Missouri A | Asia A | 10 | 10 | 10 | 30 |
| Asia B | New Jersey B | 0 | 10 | 0 | 10 |
| Illinois Blue | Illinois White | 0 | 10 | 0 | 10 |
| Kentucky A | California | 0 | 10 | 10 | 20 |
| Missouri B | Kentucky B | 0 | 10 | 0 | 10 |
| Pennsylvania | Liberia | 0 | 10 | 0 | 10 |
| Maryland Red | New Jersey A | 0 | 10 | 10 | 20 |
| Illinois Orange | Ohio | 10 | 10 | 0 | 20 |
| Virginia | Arkansas | 0 | 10 | 0 | 10 |