Question: The release of Apple's iPad tablet computer had a negative impact on Dell and other major PC vendors, as consumers switched away from desktop and laptop PCs. Dell's own mobility division has not managed success with developing smartphones or tablets, whether running Windows or Google Android. The Dell Streak was a failure commercially and critically due to its outdated OS, numerous bugs, and low resolution screen. InfoWorld suggested that Dell and other OEMs saw tablets as a short-term, low-investment opportunity running Google Android, an approach that neglected user interface and failed to gain long term market traction with consumers. Dell has responded by pushing higher-end PCs, such as the XPS line of notebooks, which do not compete with the Apple iPad and Kindle Fire tablets. The growing popularity of smartphones and tablet computers instead of PCs drove Dell's consumer segment to an operating loss in Q3 2012. In December 2012, Dell suffered its first decline in holiday sales in five years, despite the introduction of Windows 8.
Is there an answer to this question: What year did Dell see its first rise in holiday sales?

Answer: unanswerable


Question: In nature, uranium is found as uranium-238 (99.2742%) and uranium-235 (0.7204%). Isotope separation concentrates (enriches) the fissionable uranium-235 for nuclear weapons and most nuclear power plants, except for gas cooled reactors and pressurised heavy water reactors. Most neutrons released by a fissioning atom of uranium-235 must impact other uranium-235 atoms to sustain the nuclear chain reaction. The concentration and amount of uranium-235 needed to achieve this is called a 'critical mass'.
Is there an answer to this question: What is the most prevalent unnatural isotope of uranium?

Answer: unanswerable


Question: The PV industry has seen drops in module prices since 2008. In late 2011, factory-gate prices for crystalline-silicon photovoltaic modules dropped below the $1.00/W mark. The $1.00/W installed cost, is often regarded in the PV industry as marking the achievement of grid parity for PV. These reductions have taken many stakeholders, including industry analysts, by surprise, and perceptions of current solar power economics often lags behind reality. Some stakeholders still have the perspective that solar PV remains too costly on an unsubsidized basis to compete with conventional generation options. Yet technological advancements, manufacturing process improvements, and industry re-structuring, mean that further price reductions are likely in coming years.
Is there an answer to this question: The PV industry has seen drops in module prices since what year?

Answer: 2008


Question: Although his support had been essential to Shunzhi's ascent, Dorgon had through the years centralised so much power in his hands as to become a direct threat to the throne. So much so that upon his death he was extraordinarily bestowed the posthumous title of Emperor Yi (Chinese: 義皇帝), the only instance in Qing history in which a Manchu "prince of the blood" (Chinese: 親王) was so honored. Two months into Shunzhi's personal rule, Dorgon was not only stripped of his titles, but his corpse was disinterred and mutilated.[b] to atone for multiple "crimes", one of which was persecuting to death Shunzhi’s agnate eldest brother, Hooge. More importantly, Dorgon's symbolic fall from grace also signaled a political purge of his family and associates at court, thus reverting power back to the person of the emperor. After a promising start, Shunzhi's reign was cut short by his early death in 1661 at the age of twenty-four from smallpox. He was succeeded by his third son Xuanye, who reigned as the Kangxi Emperor.
Is there an answer to this question: How old was Shunzhi at his death?

Answer:
twenty-four