Article: Reflections generally affect polarization. For radio waves, one important reflector is the ionosphere which can change the wave's polarization. Thus for signals received following reflection by the ionosphere (a skywave), a consistent polarization cannot be expected. For line-of-sight communications or ground wave propagation, horizontally or vertically polarized transmissions generally remain in about the same polarization state at the receiving location. Matching the receiving antenna's polarization to that of the transmitter can make a very substantial difference in received signal strength.

Question: What will you be matching with the  receiving antenna's polarization?
Ans: transmitter


Here is a question about this article: The Russians eventually offered battle outside Moscow on 7 September: the Battle of Borodino resulted in approximately 44,000 Russian and 35,000 French dead, wounded or captured, and may have been the bloodiest day of battle in history up to that point in time. Although the French had won, the Russian army had accepted, and withstood, the major battle Napoleon had hoped would be decisive. Napoleon's own account was: "The most terrible of all my battles was the one before Moscow. The French showed themselves to be worthy of victory, but the Russians showed themselves worthy of being invincible."
What is the answer to this question:  Around how many French were killed, injured, or taken prisoner in the Battle of Borodino?
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So... 35,000


The problem: Answer a question about this article:
Napoleon had a civil marriage with Joséphine de Beauharnais, without religious ceremony. During the campaign in Egypt, Napoleon showed much tolerance towards religion for a revolutionary general, holding discussions with Muslim scholars and ordering religious celebrations, but General Dupuy, who accompanied Napoleon, revealed, shortly after Pope Pius VI's death, the political reasons for such behaviour: "We are fooling Egyptians with our pretended interest for their religion; neither Bonaparte nor we believe in this religion more than we did in Pius the Defunct's one".[note 8] In his memoirs, Bonaparte's secretary Bourienne wrote about Napoleon's religious interests in the same vein. His religious opportunism is epitomized in his famous quote: "It is by making myself Catholic that I brought peace to Brittany and Vendée. It is by making myself Italian that I won minds in Italy. It is by making myself a Moslem that I established myself in Egypt. If I governed a nation of Jews, I should reestablish the Temple of Solomon." However, according to Juan Cole, "Bonaparte's admiration for the Prophet Muhammad, in contrast, was genuine" and during his captivity on St Helena he defended him against Voltaire's critical play Mahomet.
General Dupuy revealed the motives for Napoleon's religious tolerance after the death of which religious figure?
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The answer: Pope Pius VI


Problem: Please answer a question about the following article about Tucson, Arizona:
Tucson's Sun Tran bus system serves greater Tucson with standard, express, regional shuttle, and on-demand shuttle bus service. It was awarded Best Transit System in 1988 and 2005. A 3.9-mile streetcar line, Sun Link, connects the University of Arizona campus with 4th Avenue, downtown, and the Mercado District west of Interstate 10 and the Santa Cruz River. Ten-minute headway passenger service began July 25, 2014. The streetcar utilizes Sun Tran's card payment and transfer system, connecting with the University of Arizona's CatTran shuttles, Amtrak, and Greyhound intercity bus service.
What transit systems does Sun Link connect to?
A: the University of Arizona's CatTran shuttles, Amtrak, and Greyhound intercity bus service


Question: Read this and answer the question

Argentine activists told a news conference that they would not try to snuff out the torch's flame as demonstrators had in Paris and London. "I want to announce that we will not put out the Olympic torch," said pro-Tibet activist Jorge Carcavallo. "We'll be carrying out surprise actions throughout the city of Buenos Aires, but all of these will be peaceful." Among other activities, protesters organized an alternative march that went from the Obelisk to the city hall, featuring their own "Human Rights Torch." A giant banner reading "Free Tibet" was also displayed on the torch route. According to a representative from the NGO 'Human Rights Torch Relay', their objective was to "show the contradiction between the Olympic Games and the presence of widespread human rights violations in China"

What did the large banner say that was along the alternative march route?
Answer: Free Tibet


Since the armature windings of a direct-current or universal motor are moving through a magnetic field, they have a voltage induced in them. This voltage tends to oppose the motor supply voltage and so is called "back electromotive force (emf)". The voltage is proportional to the running speed of the motor. The back emf of the motor, plus the voltage drop across the winding internal resistance and brushes, must equal the voltage at the brushes. This provides the fundamental mechanism of speed regulation in a DC motor. If the mechanical load increases, the motor slows down; a lower back emf results, and more current is drawn from the supply. This increased current provides the additional torque to balance the new load.
EMP is proportional to what?
the running speed of the motor