Problem: Electric motor:

The continuous torque density of conventional electric machines is determined by the size of the air-gap area and the back-iron depth, which are determined by the power rating of the armature winding set, the speed of the machine, and the achievable air-gap flux density before core saturation. Despite the high coercivity of neodymium or samarium-cobalt PMs, continuous torque density is virtually the same amongst electric machines with optimally designed armature winding sets. Continuous torque density relates to method of cooling and permissible period of operation before destruction by overheating of windings or PM damage.

How does continuous torque density vary between well designed motors?
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A: virtually the same

Problem: Glaciers form where the accumulation of snow and ice exceeds ablation. The area in which a glacier forms is called a cirque (corrie or cwm) - a typically armchair-shaped geological feature (such as a depression between mountains enclosed by aretes) - which collects and compresses through gravity the snow which falls into it. This snow collects and is compacted by the weight of the snow falling above it forming neve. Further crushing of the individual snowflakes and squeezing the air from the snow turns it into 'glacial ice'. This glacial ice will fill the cirque until it 'overflows' through a geological weakness or vacancy, such as the gap between two mountains. When the mass of snow and ice is sufficiently thick, it begins to move due to a combination of surface slope, gravity and pressure. On steeper slopes, this can occur with as little as 15 m (50 ft) of snow-ice.
What geological features formed by glaciers?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Combined with this influx of classical ideas was the invention of printing which facilitated dissemination of the printed word and democratized learning. These two things would later lead to the Protestant Reformation. Toward the end of the period, an era of discovery began (Age of Discovery). The rise of the Ottoman Empire, culminating in the Fall of Constantinople in 1453, eroded the last remnants of the Byzantine Empire and cut off trading possibilities with the east. Europeans were forced to seek new trading routes, leading to the expedition of Columbus to the Americas in 1492, and Vasco da Gama's circumnavigation of India and Africa in 1498. Their discoveries strengthened the economy and power of European nations.
The Protestant Reformation is attributed to what two developments that resulted from the invention of printing?
A: dissemination of the printed word and democratized learning

Context and question: By the Treaty of Paris (1763), France regained the five establishments captured by the British during the war (Pondichery, Mahe, Karikal, Yanam and Chandernagar) but was prevented from erecting fortifications and keeping troops in Bengal (art. XI). Elsewhere in India, the French were to remain a military threat, particularly during the War of American Independence, and up to the capture of Pondichery in 1793 at the outset of the French Revolutionary Wars without any military presence. Although these small outposts remained French possessions for the next two hundred years, French ambitions on Indian territories were effectively laid to rest, thus eliminating a major source of economic competition for the company.
The treaty of Paris return how many esablishment captured by the British?
Answer: five

Question: Falling prices also resulted in homes worth less than the mortgage loan, providing a financial incentive to enter foreclosure. The ongoing foreclosure epidemic that began in late 2006 in the U.S. continues to drain wealth from consumers and erodes the financial strength of banking institutions. Defaults and losses on other loan types also increased significantly as the crisis expanded from the housing market to other parts of the economy. Total losses are estimated in the trillions of U.S. dollars globally.
Is there an answer to this question: What year did the foreclosure epidemic begin?

Answer: late 2006

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Nearly all beer includes barley malt as the majority of the starch. This is because its fibrous hull remains attached to the grain during threshing. After malting, barley is milled, which finally removes the hull, breaking it into large pieces. These pieces remain with the grain during the mash, and act as a filter bed during lautering, when sweet wort is separated from insoluble grain material. Other malted and unmalted grains (including wheat, rice, oats, and rye, and less frequently, corn and sorghum) may be used. Some brewers have produced gluten-free beer, made with sorghum with no barley malt, for those who cannot consume gluten-containing grains like wheat, barley, and rye.
What is the beer containing wheat, barley, and rye called when made with sorghum as well?
A:
unanswerable