Problem: Molotov%E2%80%93Ribbentrop Pact:

In August 1940, the Soviet Union briefly suspended its deliveries under their commercial agreement after their relations were strained following disagreement over policy in Romania, the Soviet war with Finland, Germany falling behind in its deliveries of goods under the pact and with Stalin worried that Hitler's war with the West might end quickly after France signed an armistice. The suspension created significant resource problems for Germany. By the end of August, relations improved again as the countries had redrawn the Hungarian and Romanian borders, settled some Bulgarian claims and Stalin was again convinced that Germany would face a long war in the west with Britain's improvement in its air battle with Germany and the execution of an agreement between the United States and Britain regarding destroyers and bases. However, in late August, Germany arranged its own occupation of Romania, targeting oil fields. The move raised tensions with the Soviets, who responded that Germany was supposed to have consulted with the Soviet Union under Article III of the Molotov–Ribbentrop Pact.

Who started the trade because of a disagreement involving Romania?
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A: unanswerable


Problem: Capacitor:

Capacitors, especially ceramic capacitors, and older designs such as paper capacitors, can absorb sound waves resulting in a microphonic effect. Vibration moves the plates, causing the capacitance to vary, in turn inducing AC current. Some dielectrics also generate piezoelectricity. The resulting interference is especially problematic in audio applications, potentially causing feedback or unintended recording. In the reverse microphonic effect, the varying electric field between the capacitor plates exerts a physical force, moving them as a speaker. This can generate audible sound, but drains energy and stresses the dielectric and the electrolyte, if any.

What is it called when a changing electric field existing between the conductive plates of a capacitor keeps them still?
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A: unanswerable


Problem: Liberia:

Liberia scored a 3.3 on a scale from 10 (highly clean) to 0 (highly corrupt) on the 2010 Corruption Perceptions Index. This gave it a ranking 87th of 178 countries worldwide and 11th of 47 in Sub-Saharan Africa. This score represented a significant improvement since 2007, when the country scored 2.1 and ranked 150th of 180 countries. When seeking attention of a selection of service[clarification needed] providers, 89% of Liberians had to pay a bribe, the highest national percentage in the world according to the organization's 2010 Global Corruption Barometer.

What did Liberia score on the 2011 Corruption Perceptions Index?
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A: unanswerable


Problem: Central African Republic:

In 2004 the Central African Republic Bush War began as forces opposed to Bozizé took up arms against his government. In May 2005 Bozizé won a presidential election that excluded Patassé and in 2006 fighting continued between the government and the rebels. In November 2006, Bozizé's government requested French military support to help them repel rebels who had taken control of towns in the country's northern regions. Though the initially public details of the agreement pertained to logistics and intelligence, the French assistance eventually included strikes by Mirage jets against rebel positions.

In what year did Patasse win a presidential election?
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A:
unanswerable