question: Vacuum is space void of matter. The word stems from the Latin adjective vacuus for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space. In engineering and applied physics on the other hand, vacuum refers to any space in which the pressure is lower than atmospheric pressure. The Latin term in vacuo is used to describe an object as being in what would otherwise be a vacuum.

The quality of a partial vacuum refers to how closely it approaches a perfect vacuum. Other things equal, lower gas pressure means higher-quality vacuum. For example, a typical vacuum cleaner produces enough suction to reduce air pressure by around 20%. Much higher-quality vacuums are possible. Ultra-high vacuum chambers, common in chemistry, physics, and engineering, operate below one trillionth (1012) of atmospheric pressure (100 nPa), and can reach around 100 particles/cm3. Outer space is an even higher-quality vacuum, with the equivalent of just a few hydrogen atoms per cubic meter on average. According to modern understanding, even if all matter could be removed from a volume, it would still not be "empty" due to vacuum fluctuations, dark energy, transiting gamma rays, cosmic rays, neutrinos, and other phenomena in quantum physics. In the electromagnetism in the 19th century, vacuum was thought to be filled with a medium called aether. In modern particle physics, the vacuum state is considered the ground state of matter.
1. What does a vacuum not have?
2. Where does the word come from?
3. What language is that?
4. what does it mean?
5. Is that an adverb?
6. What is it?
7. What do physicists call vacuum?
8. What else?
9. What do they call a vacuum that's not perfect?
10. How does pressure in a vacuum compare to pressure in the atmosphere?
11. What does a household vacuum do to air pressure?
12. by how much?
13. Is outer space a vacuum?
14. How many hydrogen atoms or in a cubic meter out there?
15. would something be empty if there was no matter in it?
16. Why not?
17. Is vacuum one of them?
18. What's another one?
19. What did they once believe was in a vacuum?
20. When did they think this?
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answer: 1. matter
2. vacuus
3. Latin
4. vacant or void
5. no
6. adjective
7. a perfect vacuum
8. free space
9. partial vacuum
10. it's lower
11. reduces it
12. 20 percent
13. yes
14. just a few
15. no
16. phenomena in quantum physics
17. yes
18. cosmic rays
19. aether
20. in the 19th century

question: MyNetworkTV (unofficially abbreviated as MyTV, MyNet, MNT or MNTV) is an American television network/syndication service that is owned by the Fox Entertainment Group division of 21st Century Fox, and operated by subsidiaries Fox Television Stations and 20th Television. MyNetworkTV began operations on September 5, 2006 with an initial affiliate lineup covering about 96% of the country, most of which consisted of stations that were former affiliates of The WB and UPN that did not join the successor of those two networks, The CW.

On September 28, 2009, following disappointment with the network's results, MyNetworkTV dropped its status as a television network and transitioned into a programming service, similar to Ion Television, relying mainly on repeats of recent broadcast and cable series.

MyNetworkTV arose from the January 2006 announcement of the launch of The CW, a television network formed by CBS Corporation and Time Warner which essentially combined programming from The WB and UPN onto the scheduling model of the former of the two predecessors. As a result of several deals earlier in the decade, Fox Television Stations owned several UPN affiliates, including the network's three largest stations: WWOR-TV in Secaucus, New Jersey (part of the New York City market), KCOP-TV in Los Angeles and WPWR-TV in Chicago. Fox had acquired WWOR and KCOP after purchasing most of the television holdings of UPN's founding partner Chris-Craft Industries, while WPWR was purchased by the company in 2003 from Newsweb Corporation. Despite concerns about UPN's future that came up after Fox purchased the Chris-Craft stations, UPN signed three-year affiliation renewals with the network's Fox-owned affiliates in 2003. That agreement's pending expiration, along with those involving other broadcasting companies, in 2006 as well as persistent financial losses for both it and The WB gave CBS Corporation (the parent company of UPN) and Time Warner (parent of The WB) the rare opportunity to merge their respective struggling networks into The CW.
1. When did MyNetworkTV begin?
2. How much of the country did they cover?
3. DId the network have promising results?
4. Did it remain as a TV network in 2009?
5. What did it become instead?
6. True or False: During that time, it aired original content.
7. What did it mainly air?
8. What was one of Fox's 3 largest stations?
9. And another?
10. And the last?
11. What was UPN's founding partner?
12. Who bought their stations?
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answer:
1. January 2006
2. about 96%
3. no
4. no
5. a programming service
6. false
7. repeats of recent broadcast and cable series
8. WWOR-TV in Secaucus
9. KCOP-TV in Los Angeles
10. WPWR-TV in Chicago
11. Chris-Craft Industries
12. UPN