QUES: The quality of a vacuum is indicated by the amount of matter remaining in the system, so that a high quality vacuum is one with very little matter left in it. Vacuum is primarily measured by its absolute pressure, but a complete characterization requires further parameters, such as temperature and chemical composition. One of the most important parameters is the mean free path (MFP) of residual gases, which indicates the average distance that molecules will travel between collisions with each other. As the gas density decreases, the MFP increases, and when the MFP is longer than the chamber, pump, spacecraft, or other objects present, the continuum assumptions of fluid mechanics do not apply. This vacuum state is called high vacuum, and the study of fluid flows in this regime is called particle gas dynamics. The MFP of air at atmospheric pressure is very short, 70 nm, but at 100 mPa (~6997100000000000000♠1×10−3 Torr) the MFP of room temperature air is roughly 100 mm, which is on the order of everyday objects such as vacuum tubes. The Crookes radiometer turns when the MFP is larger than the size of the vanes.
What indicated the quality of a vacuum?

ANS: amount of matter remaining in the system

QUES: During World War II, when Denmark was occupied by Nazi Germany, the United States briefly controlled Greenland for battlefields and protection. In 1946, the United States offered to buy Greenland from Denmark for $100 million ($1.2 billion today) but Denmark refused to sell it. Several politicians and others have in recent years argued that Greenland could hypothetically be in a better financial situation as a part of the United States; for instance mentioned by professor Gudmundur Alfredsson at University of Akureyri in 2014. One of the actual reasons behind US interest in Greenland could be the vast natural resources of the island. According to Wikileaks, the U.S. appears to be highly interested in investing in the resource base of the island and in tapping the vast expected hydrocarbons off the Greenlandic coast.
When did the US control Greenland?

ANS: when Denmark was occupied by Nazi Germany

QUES: As the Ottoman state attempted to modernize its infrastructure and army in response to threats from the outside, it also opened itself up to a different kind of threat: that of creditors. Indeed, as the historian Eugene Rogan has written, "the single greatest threat to the independence of the Middle East" in the nineteenth century "was not the armies of Europe but its banks." The Ottoman state, which had begun taking on debt with the Crimean War, was forced to declare bankruptcy in 1875. By 1881, the Ottoman Empire agreed to have its debt controlled by an institution known as the Ottoman Public Debt Administration, a council of European men with presidency alternating between France and Britain. The body controlled swaths of the Ottoman economy, and used its position to insure that European capital continued to penetrate the empire, often to the detriment of local Ottoman interests.
European capital in the Ottoman empire resulted in what?

ANS: the detriment of local Ottoman interests

QUES: In December 1994, TCM debuted "TCM Remembers", a tribute to recently deceased notable film personalities (including actors, producers, composers, directors, writers and cinematographers) that occasionally airs during promotional breaks between films. The segments appear in two forms: individual tributes and a longer end-of-year compilation. Following the recent death of an especially famous classic film personality (usually an actor, producer, filmmaker or director), the segment will feature a montage of select shots of the deceased's work. Every December, a longer, more inclusive "TCM Remembers" interstitial is produced that honors all of the noted film personalities who died during the past year, interspersed with scenes from settings such as an abandoned drive-in (2012) or a theatre which is closing down and is being dismantled (2013). Since 2001, the soundtracks for these clipreels have been introspective melodies by indie artists such as Badly Drawn Boy (2007) or Steve Earle (2009).
In what year did Badly Drawn Boy provide a soundtrack for TCM Remembers?

ANS:
2007