Context and 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.
At around what RMR do miniature grinders operate?
Answer: unanswerable
Context and question: The Reinvent the Toilet Challenge is a long-term research and development effort to develop a hygienic, stand-alone toilet. This challenge is being complemented by another investment program to develop new technologies for improved pit latrine emptying (called by the foundation the "Omni-Ingestor") and fecal sludge processing (called "Omni-Processor"). The aim of the "Omni Processor" is to convert excreta (for example fecal sludge) into beneficial products such as energy and soil nutrients with the potential to develop local business and revenue.
What does Reinvent the Toilet Challenge convert into beneficial products?
Answer: unanswerable
Context and question: According to the Somali Economic Forum, the number of internet users in Somalia rose from only 200 in the year 2000 to 106,000 users in 2011, with the percentage continuing to rise. The number of mobile subscribers is similarly expected to rise from 512,682 in 2008 to around 6.1 million by 2015.
Goes the number of internet users in Somalia continue to rise or fall?
Answer:
rise