The problem: Answer a question about this article:
While inert gas reduces filament evaporation, it also conducts heat from the filament, thereby cooling the filament and reducing efficiency. At constant pressure and temperature, the thermal conductivity of a gas depends upon the molecular weight of the gas and the cross sectional area of the gas molecules. Higher molecular weight gasses have lower thermal conductivity, because both the molecular weight is higher and also the cross sectional area is higher. Xenon gas improves efficiency because of its high molecular weight, but is also more expensive, so its use is limited to smaller lamps.
Why does inert gas reduce efficiency?
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The answer: conducts heat from the filament, thereby cooling the filament


The problem: Answer a question about this article:
In the later Vedic Age, a number of small kingdoms or city states had covered the subcontinent, many mentioned in Vedic, early Buddhist and Jaina literature as far back as 500 BCE. sixteen monarchies and "republics" known as the Mahajanapadas—Kashi, Kosala, Anga, Magadha, Vajji (or Vriji), Malla, Chedi, Vatsa (or Vamsa), Kuru, Panchala, Matsya (or Machcha), Shurasena, Assaka, Avanti, Gandhara, and Kamboja—stretched across the Indo-Gangetic Plain from modern-day Afghanistan to Bengal and Maharashtra. This period saw the second major rise of urbanism in India after the Indus Valley Civilisation.
By what age had many small states covered the subcontinent?
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The answer: later Vedic Age


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One person may presume knowledge of another person's sexual orientation based upon perceived characteristics, such as appearance, clothing, tone of voice, and accompaniment by and behavior with other people. The attempt to detect sexual orientation in social situations is known as gaydar; some studies have found that guesses based on face photos perform better than chance. 2015 research suggests that "gaydar" is an alternate label for using LGBT stereotypes to infer orientation, and that face-shape is not an accurate indication of orientation.
What did research in 2015 suggest was an alternate label for gaydar?
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The answer: using LGBT stereotypes to infer orientation


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Galicia (English i/ɡəˈlɪsiə/, /ɡəˈlɪʃə/; Galician: [ɡaˈliθja] ( listen), [ħaˈliθja], or [ħaˈlisja]; Spanish: [ɡaˈliθja]; Galician and Portuguese: Galiza, [ɡaˈliθa] ( listen), [ħaˈliθa] or [ħaˈlisa]) is an autonomous community of Spain and historic nationality under Spanish law. Located in the North-West of the Iberian Peninsula, it comprises the provinces of A Coruña, Lugo, Ourense and Pontevedra, being bordered by Portugal to the south, the Spanish autonomous communities of Castile and León and Asturias to the east, and the Atlantic Ocean to the west and the north. It had a population of 2,765,940 in 2013 and has a total area of 29,574 km2 (11,419 sq mi). Galicia has over 1,660 km (1,030 mi) of coastline, including its offshore islands and islets, among them Cíes Islands, Ons, Sálvora, Cortegada, and—the largest and most populated—A Illa de Arousa.
Which large body of water does Galicia border?
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The answer:
Atlantic Ocean