Problem: Planck constant:

The "photoelectrons" emitted as a result of the photoelectric effect have a certain kinetic energy, which can be measured. This kinetic energy (for each photoelectron) is independent of the intensity of the light, but depends linearly on the frequency; and if the frequency is too low (corresponding to a photon energy that is less than the work function of the material), no photoelectrons are emitted at all, unless a plurality of photons, whose energetic sum is greater than the energy of the photoelectrons, acts virtually simultaneously (multiphoton effect) Assuming the frequency is high enough to cause the photoelectric effect, a rise in intensity of the light source causes more photoelectrons to be emitted with the same kinetic energy, rather than the same number of photoelectrons to be emitted with higher kinetic energy.

What type of energy due photoelectrons emitted due to the photoneutral effect have?
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A: unanswerable

Problem: Nigeria:

Even though most ethnic groups prefer to communicate in their own languages, English as the official language is widely used for education, business transactions and for official purposes. English as a first language is used only by a small minority of the country's urban elite, and it is not spoken at all in some rural areas. Hausa is the most widely spoken of the 3 main languages spoken in Nigeria itself (Igbo, Hausa and Yoruba) but unlike the Yorubas and Igbos, the Hausas tend not to travel far outside Nigeria itself.[citation needed]

How much of Nigeria uses English as a first language?
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A: a small minority of the country's urban elite

Problem: Warsaw Pact:

In April 1954 Adenauer made his first visit to the USA meeting Nixon, Eisenhower and Dulles. Ratification of EDC was delaying but the US representatives made it clear to Adenauer that EDC would have to become a part of NATO.

In what year did Konrad Adenauer first visit the United States?
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A: 1954

Problem: Geography of the United States:

The Great Basin and Columbia Plateau (the Intermontane Plateaus) are arid or semiarid regions that lie in the rain shadow of the Cascades and Sierra Nevada. Precipitation averages less than 15 inches (38 cm). The Southwest is a hot desert, with temperatures exceeding 100 F (37.8 C) for several weeks at a time in summer. The Southwest and the Great Basin are also affected by the monsoon from the Gulf of California from July to September, which brings localized but often severe thunderstorms to the region.

During which months are portions of the US affected by the monsoon from the Gulf of California?
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A:
July to September