Input: Read this: Stepper motors can be rotated to a specific angle in discrete steps with ease, and hence stepper motors are used for read/write head positioning in computer floppy diskette drives. They were used for the same purpose in pre-gigabyte era computer disk drives, where the precision and speed they offered was adequate for the correct positioning of the read/write head of a hard disk drive. As drive density increased, the precision and speed limitations of stepper motors made them obsolete for hard drives—the precision limitation made them unusable, and the speed limitation made them uncompetitive—thus newer hard disk drives use voice coil-based head actuator systems. (The term "voice coil" in this connection is historic; it refers to the structure in a typical (cone type) loudspeaker. This structure was used for a while to position the heads. Modern drives have a pivoted coil mount; the coil swings back and forth, something like a blade of a rotating fan. Nevertheless, like a voice coil, modern actuator coil conductors (the magnet wire) move perpendicular to the magnetic lines of force.)
Question:  What don't newer computer drives use instead of stepper motors?

Output: unanswerable


QUES: After the costly U.S. involvement in World War I, isolationism grew within the nation. Congress refused membership in the League of Nations, and in response to the growing turmoil in Europe and Asia, the gradually more restrictive Neutrality Acts were passed, which were intended to prevent the U.S. from supporting either side in a war. President Franklin D. Roosevelt sought to support Britain, however, and in 1940 signed the Lend-Lease Act, which permitted an expansion of the "cash and carry" arms trade to develop with Britain, which controlled the Atlantic sea lanes.

What was the name of the 1940 program to send arms to Britain?
What is the answer?
ANS: the Lend-Lease Act


QUES: Dissatisfaction with the conduct of the war was growing with the public in the UK and in other countries, aggravated by reports of fiascos, especially the humiliating defeat of the Charge of the Light Brigade at the Battle of Balaclava. On Sunday, 21 January 1855, a "snowball riot" occurred in Trafalgar Square near St. Martin-in-the-Field in which 1,500 people gathered to protest against the war by pelting buses, cabs, and pedestrians with snow balls. When the police intervened, the snowballs were directed at them. The riot was finally put down by troops and police acting with truncheons. In Parliament, Tories demanded an accounting of all soldiers, cavalry and sailors sent to the Crimea and accurate figures as to the number of casualties that had been sustained by all British armed forces in the Crimea; they were especially concerned with the Battle of Balaclava. When Parliament passed a bill to investigate by the vote of 305 to 148, Aberdeen said he had lost a vote of no confidence and resigned as prime minister on 30 January 1855. The veteran former Foreign Secretary Lord Palmerston became prime minister. Palmerston took a hard line; he wanted to expand the war, foment unrest inside the Russian Empire, and permanently reduce the Russian threat to Europe. Sweden and Prussia were willing to join the UK and France, and Russia was isolated.:400–402, 406–408
What position did Lord Palmerston previously hold before becoming a Prime Minister?

ANS: Foreign Secretary


Commercial CSP plants were first developed in the 1980s. Since 1985 the eventually 354 MW SEGS CSP installation, in the Mojave Desert of California, is the largest solar power plant in the world. Other large CSP plants include the 150 MW Solnova Solar Power Station and the 100 MW Andasol solar power station, both in Spain. The 250 MW Agua Caliente Solar Project, in the United States, and the 221 MW Charanka Solar Park in India, are the world’s largest photovoltaic plants. Solar projects exceeding 1 GW are being developed, but most of the deployed photovoltaics are in small rooftop arrays of less than 5 kW, which are grid connected using net metering and/or a feed-in tariff. In 2013 solar generated less than 1% of the worlds total grid electricity.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where is the largest solar power plant in the world located?
Ah, so.. Mojave Desert of California


Question: Solar hot water systems use sunlight to heat water. In low geographical latitudes (below 40 degrees) from 60 to 70% of the domestic hot water use with temperatures up to 60 °C can be provided by solar heating systems. The most common types of solar water heaters are evacuated tube collectors (44%) and glazed flat plate collectors (34%) generally used for domestic hot water; and unglazed plastic collectors (21%) used mainly to heat swimming pools.
Try to answer this question if possible: How much hot water can be produced by solar heating systems in low geographical latitudes?
Answer: 60 to 70% of the domestic hot water


Question: Miami is a major center, and a leader in finance, commerce, culture, media, entertainment, the arts, and international trade. In 2012, Miami was classified as an Alpha−World City in the World Cities Study Group's inventory. In 2010, Miami ranked seventh in the United States in terms of finance, commerce, culture, entertainment, fashion, education, and other sectors. It ranked 33rd among global cities. In 2008, Forbes magazine ranked Miami "America's Cleanest City", for its year-round good air quality, vast green spaces, clean drinking water, clean streets, and city-wide recycling programs. According to a 2009 UBS study of 73 world cities, Miami was ranked as the richest city in the United States, and the world's fifth-richest city in terms of purchasing power. Miami is nicknamed the "Capital of Latin America", is the second largest U.S. city with a Spanish-speaking majority, and the largest city with a Cuban-American plurality.
Try to answer this question if possible: What is a nickname not given to Miami?
Answer:
unanswerable