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.

Question: Why does inert gas reduce efficiency?
Ans: conducts heat from the filament, thereby cooling the filament


Here is a question about this article: In March 2013, Governor Rick Snyder declared a financial emergency in the city, stating that the city has a $327 million budget deficit and faces more than $14 billion in long-term debt. It has been making ends meet on a month-to-month basis with the help of bond money held in a state escrow account and has instituted mandatory unpaid days off for many city workers. Those troubles, along with underfunded city services, such as police and fire departments, and ineffective turnaround plans from Bing and the City Council led the state of Michigan to appoint an emergency manager for Detroit on March 14, 2013. On June 14, 2013 Detroit defaulted on $2.5 billion of debt by withholding $39.7 million in interest payments, while Emergency Manager Kevyn Orr met with bondholders and other creditors in an attempt to restructure the city's $18.5 billion debt and avoid bankruptcy. On July 18, 2013, the City of Detroit filed for Chapter 9 bankruptcy protection. It was declared bankrupt by U.S. judge Stephen Rhodes on December 3, with its $18.5 billion debt he said in accepting the city's contention that it is broke and that negotiations with its thousands of creditors were infeasible.
What is the answer to this question: When did Detroit file for bankruptcy?
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So... July 18, 2013


The problem: Answer a question about this article:
Though human activities have allowed the expansion of a few species, such as the barn swallow and European starling, they have caused population decreases or extinction in many other species. Over a hundred bird species have gone extinct in historical times, although the most dramatic human-caused avian extinctions, eradicating an estimated 750–1800 species, occurred during the human colonisation of Melanesian, Polynesian, and Micronesian islands. Many bird populations are declining worldwide, with 1,227 species listed as threatened by BirdLife International and the IUCN in 2009.
How many bird species have gone extinct in historical times?
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The answer: Over a hundred


Problem: Please answer a question about the following article about Montevideo:
On 3 February 1807, British troops under the command of General Samuel Auchmuty and Admiral Charles Stirling occupied the city during the Battle of Montevideo (1807), but it was recaptured by the Spanish in the same year on 2 September when John Whitelocke was forced to surrender to troops formed by forces of the Banda Oriental—roughly the same area as modern Uruguay—and of Buenos Aires. After this conflict, the governor of Montevideo Francisco Javier de Elío opposed the new viceroy Santiago de Liniers, and created a government Junta when the Peninsular War started in Spain, in defiance of Liniers. Elío disestablished the Junta when Liniers was replaced by Baltasar Hidalgo de Cisneros.
When did British troops occupy the city of Montevideo?
A: 3 February 1807


Question: Read this and answer the question

The city slopes gently from the northwest to southeast on a till plain composed largely of glacial and lake clay. The most notable topographical feature in the city is the Detroit Moraine, a broad clay ridge on which the older portions of Detroit and Windsor sit atop, rising approximately 62 feet (19 m) above the river at its highest point. The highest elevation in the city is located directly north of Gorham Playground on the northwest side approximately three blocks south of 8 Mile Road, at a height of 675 to 680 feet (206 to 207 m). Detroit's lowest elevation is along the Detroit River, at a surface height of 572 feet (174 m).

What is the prominent topographical feature in Detroit?
Answer: Detroit Moraine


Timely's first publication, Marvel Comics #1 (cover dated Oct. 1939), included the first appearance of Carl Burgos' android superhero the Human Torch, and the first appearances of Bill Everett's anti-hero Namor the Sub-Mariner, among other features. The issue was a great success, with it and a second printing the following month selling, combined, nearly 900,000 copies. While its contents came from an outside packager, Funnies, Inc., Timely had its own staff in place by the following year. The company's first true editor, writer-artist Joe Simon, teamed with artist and emerging industry notable Jack Kirby to create one of the first patriotically themed superheroes, Captain America, in Captain America Comics #1 (March 1941). It, too, proved a hit, with sales of nearly one million. Goodman formed Timely Comics, Inc., beginning with comics cover-dated April 1941 or Spring 1941.
What was the cover date on Marvel Comics #1?
Oct. 1939