Context and question: Capacitors made with any type of dielectric material will show some level of "dielectric absorption" or "soakage". On discharging a capacitor and disconnecting it, after a short time it may develop a voltage due to hysteresis in the dielectric. This effect can be objectionable in applications such as precision sample and hold circuits or timing circuits. The level of absorption depends on many factors, from design considerations to charging time, since the absorption is a time-dependent process. However, the primary factor is the type of dielectric material. Capacitors such as tantalum electrolytic or polysulfone film exhibit very high absorption, while polystyrene or Teflon allow very small levels of absorption. In some capacitors where dangerous voltages and energies exist, such as in flashtubes, television sets, and defibrillators, the dielectric absorption can recharge the capacitor to hazardous voltages after it has been shorted or discharged. Any capacitor containing over 10 joules of energy is generally considered hazardous, while 50 joules or higher is potentially lethal. A capacitor may regain anywhere from 0.01 to 20% of its original charge over a period of several minutes, allowing a seemingly safe capacitor to become surprisingly dangerous.
What level of dielectric absorption would a Teflon capacitor never exhibit?
Answer: unanswerable
Context and question: In addition, most Grand Lodges require the candidate to declare a belief in a Supreme Being. In a few cases, the candidate may be required to be of a specific religion. The form of Freemasonry most common in Scandinavia (known as the Swedish Rite), for example, accepts only Christians. At the other end of the spectrum, "Liberal" or Continental Freemasonry, exemplified by the Grand Orient de France, does not require a declaration of belief in any deity, and accepts atheists (a cause of discord with the rest of Freemasonry).
What belief is required of a candidate by the Grand Lodge?
Answer: belief in a Supreme Being
Context and question: The World Health Organization and the UN Environment Programme estimate that each year, 3 million workers in agriculture in the developing world experience severe poisoning from pesticides, about 18,000 of whom die. Owing to inadequate regulation and safety precautions, 99% of pesticide related deaths occur in developing countries that account for only 25% of pesticide usage. According to one study, as many as 25 million workers in developing countries may suffer mild pesticide poisoning yearly. There are several careers aside from agriculture that may also put individuals at risk of health effects from pesticide exposure including pet groomers, groundskeepers, and fumigators.
How many workers in agriculture die a year from severly poisining pesticides in developing countries?
Answer:
18,000