Question: Whereas SCIMs cannot turn a shaft faster than allowed by the power line frequency, universal motors can run at much higher speeds. This makes them useful for appliances such as blenders, vacuum cleaners, and hair dryers where high speed and light weight are desirable. They are also commonly used in portable power tools, such as drills, sanders, circular and jig saws, where the motor's characteristics work well. Many vacuum cleaner and weed trimmer motors exceed 10,000 rpm, while many similar miniature grinders exceed 30,000 rpm.
Is there an answer to this question: At around what RMR do miniature grinders operate?

Answer: unanswerable

Question: In 1897, Victoria had written instructions for her funeral, which was to be military as befitting a soldier's daughter and the head of the army, and white instead of black. On 25 January, Edward VII, the Kaiser and Prince Arthur, Duke of Connaught, helped lift her body into the coffin. She was dressed in a white dress and her wedding veil. An array of mementos commemorating her extended family, friends and servants were laid in the coffin with her, at her request, by her doctor and dressers. One of Albert's dressing gowns was placed by her side, with a plaster cast of his hand, while a lock of John Brown's hair, along with a picture of him, was placed in her left hand concealed from the view of the family by a carefully positioned bunch of flowers. Items of jewellery placed on Victoria included the wedding ring of John Brown's mother, given to her by Brown in 1883. Her funeral was held on Saturday, 2 February, in St George's Chapel, Windsor Castle, and after two days of lying-in-state, she was interred beside Prince Albert in Frogmore Mausoleum at Windsor Great Park. As she was laid to rest at the mausoleum, it began to snow.
Is there an answer to this question: What item from her wedding was Victoria not dressed in inside her coffin?

Answer: unanswerable

Question: Authors including William Whalen, Shawn Francis Peters and former Witnesses Barbara Grizzuti Harrison, Alan Rogerson and William Schnell have claimed the arrests and mob violence in the United States in the 1930s and 1940s were the consequence of what appeared to be a deliberate course of provocation of authorities and other religions by Jehovah's Witnesses. Whalen, Harrison and Schnell have suggested Rutherford invited and cultivated opposition for publicity purposes in a bid to attract dispossessed members of society, and to convince members that persecution from the outside world was evidence of the truth of their struggle to serve God. Watch Tower Society literature of the period directed that Witnesses should "never seek a controversy" nor resist arrest, but also advised members not to co-operate with police officers or courts that ordered them to stop preaching, and to prefer jail rather than pay fines.
Is there an answer to this question: What did Watch Tower Society literature tell Jehovah's Witnesses they should never seek?

Answer: controversy

Question: As a teenager, he was greatly troubled by the Metaphysics of Aristotle, which he could not understand until he read al-Farabi's commentary on the work. For the next year and a half, he studied philosophy, in which he encountered greater obstacles. In such moments of baffled inquiry, he would leave his books, perform the requisite ablutions, then go to the mosque, and continue in prayer till light broke on his difficulties. Deep into the night, he would continue his studies, and even in his dreams problems would pursue him and work out their solution. Forty times, it is said, he read through the Metaphysics of Aristotle, till the words were imprinted on his memory; but their meaning was hopelessly obscure, until one day they found illumination, from the little commentary by Farabi, which he bought at a bookstall for the small sum of three dirhams. So great was his joy at the discovery, made with the help of a work from which he had expected only mystery, that he hastened to return thanks to God, and bestowed alms upon the poor.
Is there an answer to this question: How long did Avicenna study philosophy?

Answer:
year and a half