Problem: Railway electrification system:

1,500 V DC is used in the Netherlands, Japan, Republic Of Indonesia, Hong Kong (parts), Republic of Ireland, Australia (parts), India (around the Mumbai area alone, has been converted to 25 kV AC like the rest of India), France (also using 25 kV 50 Hz AC), New Zealand (Wellington) and the United States (Chicago area on the Metra Electric district and the South Shore Line interurban line). In Slovakia, there are two narrow-gauge lines in the High Tatras (one a cog railway). In Portugal, it is used in the Cascais Line and in Denmark on the suburban S-train system.

The Cascade Line is located where?
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A: unanswerable


Problem: Affirmative action in the United States:

UCLA professor Richard H. Sander published an article in the November 2004 issue of the Stanford Law Review that questioned the effectiveness of racial preferences in law schools. He noted that, prior to his article, there had been no comprehensive study on the effects of affirmative action. The article presents a study that shows that half of all black law students rank near the bottom of their class after the first year of law school and that black law students are more likely to drop out of law school and to fail the bar exam. The article offers a tentative estimate that the production of new black lawyers in the United States would grow by eight percent if affirmative action programs at all law schools were ended. Less qualified black students would attend less prestigious schools where they would be more closely matched in abilities with their classmates and thus perform relatively better. Sander helped to develop a socioeconomically-based affirmative action plan for the UCLA School of Law after the passage of Proposition 209 in 1996, which prohibited the use of racial preferences by public universities in California. This change occurred after studies showed that the graduation rate of blacks at UCLA was 41%, compared to 73% for whites.

Which legislative work did not prohibit the use of racial preferences for admissions in the state of California?
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A: unanswerable


Problem: Lancashire:

The Red Rose of Lancaster is the county flower found on the county's heraldic badge and flag. The rose was a symbol of the House of Lancaster, immortalised in the verse "In the battle for England's head/York was white, Lancaster red" (referring to the 15th-century Wars of the Roses). The traditional Lancashire flag, a red rose on a white field, was not officially registered. When an attempt was made to register it with the Flag Institute it was found that it was officially registered by Montrose in Scotland, several hundred years earlier with the Lyon Office. Lancashire's official flag is registered as a red rose on a gold field.

In what century was the Flag Institute founded?
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A: unanswerable


Problem: Capacitor:

In October 1745, Ewald Georg von Kleist of Pomerania, Germany, found that charge could be stored by connecting a high-voltage electrostatic generator by a wire to a volume of water in a hand-held glass jar. Von Kleist's hand and the water acted as conductors, and the jar as a dielectric (although details of the mechanism were incorrectly identified at the time). Von Kleist found that touching the wire resulted in a powerful spark, much more painful than that obtained from an electrostatic machine. The following year, the Dutch physicist Pieter van Musschenbroek invented a similar capacitor, which was named the Leyden jar, after the University of Leiden where he worked. He also was impressed by the power of the shock he received, writing, "I would not take a second shock for the kingdom of France."

What was the name of the French physicist who invented the Leyden Jar?
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A:
unanswerable