Question: The Spanish Empire and other Europeans brought horses to the Americas. Some of these animals escaped and began to breed and increase their numbers in the wild. The re-introduction of the horse, extinct in the Americas for over 7500 years, had a profound impact on Native American culture in the Great Plains of North America and of Patagonia in South America. By domesticating horses, some tribes had great success: horses enabled them to expand their territories, exchange more goods with neighboring tribes, and more easily capture game, especially bison.
Try to answer this question if possible: How long had horses been extinct in the Americas prior to their re-introduction?
Answer: 7500 years
Question: While local government in Ireland has limited powers in comparison with other countries, the council has responsibility for planning, roads, sanitation, libraries, street lighting, parks, and a number of other important functions. Cork City Council has 31 elected members representing six electoral wards. The members are affiliated to the following political parties: Fine Gael (5 members), Fianna Fail (10 members), Sinn Fein (8 members), Anti-Austerity Alliance (3 members), Workers' Party (1 member), Independents (4 members). Certain councillors are co-opted to represent the city at the South-West Regional Authority. A new Lord Mayor of Cork is chosen in a vote by the elected members of the council under a D'Hondt system count.
Try to answer this question if possible: How many wards make up Cork?
Answer: six electoral wards
Question: In late 1977, music writers for Sounds first used the terms "New Musick" and "post punk" to describe British acts such as Siouxsie and the Banshees and Wire, who began experimenting with sounds, lyrics and aesthetics that differed significantly from their punk contemporaries. Writer Jon Savage described some of these early developments as exploring "harsh urban scrapings [,] controlled white noise" and "massively accented drumming". In January 1978, singer John Lydon (then known as Johnny Rotten) announced the break-up of his pioneering punk band the Sex Pistols, citing his disillusionment with punk's musical predictability and cooption by commercial interests, as well as his desire to explore more diverse interests.
Try to answer this question if possible: Who used sounds and lyrics similar to their contemporaries in 1977?
Answer: unanswerable
Question: 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♠️1103 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.
Try to answer this question if possible: What does the MFP of residual gases show?
Answer:
average distance that molecules will travel between collisions with each other.