Bonus
Windcatchers leverage the energy released by this phase transition to cool buildings. For 10 points each:
[10e] What phase transition also cools animals that sweat? In this process, a liquid transforms into a gas.
ANSWER: evaporation [or vaporization; accept evaporative cooling]
[10h] The heat released in evaporative cooling is the enthalpy of vaporization, an example of this form of heat released during a phase transition. The derivative of pressure with respect to temperature equals this form of heat divided by “T delta-V” in the Clausius-Clapeyron equation.
ANSWER: latent heat [prompt on L]
[10m] Liquid water can coexist with water vapor at this point on its phase diagram, at 647 Kelvin and 22 megapascals. This point is denoted by an open circle on the far right of a phase diagram.
ANSWER: critical point
<Editors, Physics>
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 2 | 10 | 16.00 | 100% | 40% | 20% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Amherst A | Brown B | 10 | 0 | 10 | 20 | EM |
| Boston College A | Vermont B | 10 | 0 | 0 | 10 | E |
| Dartmouth A | Williams B | 10 | 0 | 0 | 10 | E |
| Dartmouth B | Brown A | 10 | 0 | 0 | 10 | E |
| Edinburgh A | Sheffield B | 10 | 0 | 10 | 20 | EM |
| Maryland A | George Mason A | 10 | 10 | 10 | 30 | EHM |
| Rutgers A | Maryland C | 10 | 0 | 10 | 20 | EM |
| Toronto B | McMaster A | 10 | 0 | 0 | 10 | E |
| UC Santa Barbara | Claremont A | 10 | 0 | 0 | 10 | E |
| Vanderbilt A | Chipola College | 10 | 10 | 0 | 20 | EH |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| UK (North) | UK | Y | 1 | 20.00 | 100% | 100% | 0% |
| Southern California | US | Y | 1 | 10.00 | 100% | 0% | 0% |
| Eastern Canada (2) | US | Y | 1 | 10.00 | 100% | 0% | 0% |
| Upper Mid-Atlantic | US | Y | 2 | 25.00 | 100% | 100% | 50% |
| Northeast | US | Y | 4 | 12.50 | 100% | 25% | 0% |
| Southeast | US | Y | 1 | 20.00 | 100% | 0% | 100% |