Problem: Vacuum:

Ion gauges are used in ultrahigh vacuum. They come in two types: hot cathode and cold cathode. In the hot cathode version an electrically heated filament produces an electron beam. The electrons travel through the gauge and ionize gas molecules around them. The resulting ions are collected at a negative electrode. The current depends on the number of ions, which depends on the pressure in the gauge. Hot cathode gauges are accurate from 10−3 torr to 10−10 torr. The principle behind cold cathode version is the same, except that electrons are produced in a discharge created by a high voltage electrical discharge. Cold cathode gauges are accurate from 10−2 torr to 10−9 torr. Ionization gauge calibration is very sensitive to construction geometry, chemical composition of gases being measured, corrosion and surface deposits. Their calibration can be invalidated by activation at atmospheric pressure or low vacuum. The composition of gases at high vacuums will usually be unpredictable, so a mass spectrometer must be used in conjunction with the ionization gauge for accurate measurement.

In the hot cathode version what does corrosion produce?
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A: unanswerable


Problem: 2008 Summer Olympics torch relay:


 Japan: The event was held in Nagano, which hosted the 1998 Winter Olympics, on April 26. Japanese Buddhist temple Zenkō-ji, which was originally scheduled to be the starting point for the Olympic torch relay in Nagano, refused to host the torch and pulled out of the relay plans, amid speculation that monks there sympathized with anti-Chinese government protesters. as well as the risk of disruption by violent protests. Parts of Zenkō-ji temple's main building (Zenkō-ji Hondō), reconstructed in 1707 and one of the National Treasures of Japan, was then vandalized with spraypaint. A new starting point, previously the site of a municipal building and now a parking lot, was chosen by the city. An event the city had planned to hold at the Minami Nagano Sports Park following the torch relay was also canceled out of concern about disruptions caused by demonstrators protesting against China's recent crackdown in Tibet. Thousands of riot police were mobilized to protect the torch along its route. The show of force kept most protesters in check, but slogans shouted by pro-China or pro-Tibet demonstrators, Japanese nationalists, and human rights organizations flooded the air. Five men were arrested and four injured amidst scenes of mob violence. The torch route was packed with mostly peaceful demonstrators. The public was not allowed at the parking lot where the relay started. After the Zenkoji monks held a prayer ceremony for victims of the recent events in Tibet. More than 100 police officers ran with the torch and riot police lined the streets while three helicopters flew above. Only two Chinese guards were allowed to accompany the torch because of Japan's concern over their treatment of demonstrators at previous relays. A man with a Tibetan flag tried to stop the torch at the beginning of the relay but was dragged off by police. Some raw eggs were also thrown from the crowd.

Which Olympics did Nagano host?
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A: 1998 Winter Olympics


Problem: Macintosh:

The current Mac product family uses Intel x86-64 processors. Apple introduced an emulator during the transition from PowerPC chips (called Rosetta), much as it did during the transition from Motorola 68000 architecture a decade earlier. The Macintosh is the only mainstream computer platform to have successfully transitioned to a new CPU architecture, and has done so twice. All current Mac models ship with at least 8 GB of RAM as standard other than the 1.4 GHz Mac Mini, MacBook Pro (without Retina Display), and MacBook Air. Current Mac computers use ATI Radeon or nVidia GeForce graphics cards as well as Intel graphics built into the main CPU. All current Macs (except for the MacBook Pro without Retina Display) do not ship with an optical media drive that includes a dual-function DVD/CD burner. Apple refers to this as a SuperDrive. Current Macs include two standard data transfer ports: USB and Thunderbolt (except for the MacBook (2015 version), which only has a USB-C port and headphone port). MacBook Pro, iMac, MacBook Air, and Mac Mini computers now also feature the "Thunderbolt" port, which Apple says can transfer data at speeds up to 10 gigabits per second. USB was introduced in the 1998 iMac G3 and is ubiquitous today, while FireWire is mainly reserved for high-performance devices such as hard drives or video cameras. Starting with the then-new iMac G5, released in October 2005, Apple started to include built-in iSight cameras on appropriate models, and a media center interface called Front Row that can be operated by an Apple Remote or keyboard for accessing media stored on the computer. Front Row has been discontinued as of 2011, however, and the Apple Remote is no longer bundled with new Macs.

What is the standard amount of RAM included with almost all current Mac models?
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A: 8 GB


Problem: Adolescence:

Following a steady decline, beginning in the late 1990s up through the mid-2000s, illicit drug use among adolescents has been on the rise in the U.S. Aside from alcohol, marijuana is the most commonly indulged drug habit during adolescent years. Data collected by the National Institute on Drug Abuse shows that between the years of 2007 and 2011, marijuana use grew from 5.7% to 7.2% among 8th grade students; among 10th grade students, from 14.2% to 17.6%; and among 12th graders, from 18.8% to 22.6%. Additional, recent years have seen a surge in popularity of MDMA; between 2010 and 2011, the use of MDMA increased from 1.4% to 2.3% among high school seniors. The heightened usage of ecstasy most likely ties in at least to some degree with the rising popularity of rave culture.

What is the most commonly abused substance during adolescent years in the U.S.?
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A:
alcohol