Problem: Please answer a question about the following article about Capacitor:
Charles Pollak (born Karol Pollak), the inventor of the first electrolytic capacitors, found out that the oxide layer on an aluminum anode remained stable in a neutral or alkaline electrolyte, even when the power was switched off. In 1896 he filed a patent for an "Electric liquid capacitor with aluminum electrodes." Solid electrolyte tantalum capacitors were invented by Bell Laboratories in the early 1950s as a miniaturized and more reliable low-voltage support capacitor to complement their newly invented transistor.
Who invented the first electrolytic capacitor?
A: Charles Pollak
Problem: Please answer a question about the following article about Gamal Abdel Nasser:
In 1937, Nasser applied to the Royal Military Academy for army officer training, but his police record of anti-government protest initially blocked his entry. Disappointed, he enrolled in the law school at King Fuad University, but quit after one semester to reapply to the Military Academy. From his readings, Nasser, who frequently spoke of "dignity, glory, and freedom" in his youth, became enchanted with the stories of national liberators and heroic conquerors; a military career became his chief priority.
Where did Nasser apply in 1937?
A: Royal Military Academy
Problem: Please answer a question about the following article about Indigenous peoples of the Americas:
The territory of modern-day Mexico was home to numerous indigenous civilizations prior to the arrival of the Spanish conquistadores: The Olmecs, who flourished from between 1200 BCE to about 400 BCE in the coastal regions of the Gulf of Mexico; the Zapotecs and the Mixtecs, who held sway in the mountains of Oaxaca and the Isthmus of Tehuantepec; the Maya in the Yucatan (and into neighbouring areas of contemporary Central America); the Purépecha in present-day Michoacán and surrounding areas, and the Aztecs/Mexica, who, from their central capital at Tenochtitlan, dominated much of the centre and south of the country (and the non-Aztec inhabitants of those areas) when Hernán Cortés first landed at Veracruz.
Who held sway in the mountains of Oaxaca?
A: the Zapotecs and the Mixtecs
Problem: Please answer a question about the following article about Computer:
It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors.
Where did John Mauchly and J. Presper Eckert build the ENIAC?
A:
University of Pennsylvania