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  2. List of unsolved problems in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.

  3. List of unsolved problems in economics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Equity premium puzzle: The equity premium puzzle is thought to be one of the most important outstanding questions in neoclassical economics. [6] It is founded on the basis that over the last one hundred years or so the average real return to stocks in the US has been substantially higher than that of bonds.

  4. Toughness - Wikipedia

    en.wikipedia.org/wiki/Toughness

    Toughness is related to the area under the stress–strain curve.In order to be tough, a material must be both strong and ductile. For example, brittle materials (like ceramics) that are strong but with limited ductility are not tough; conversely, very ductile materials with low strengths are also not tough.

  5. Central Board of Secondary Education - Wikipedia

    en.wikipedia.org/wiki/Central_Board_of_Secondary...

    However, the Term-I examination was criticised by many for having wrong answer keys, tough question papers and wrong or controversial questions with a question being dropped in Sociology exam of class 12 and a paragraph in English Language and Literature exam for class 10 by CBSE following which CBSE dropped the experts who set the Sociology ...

  6. 30 Smart Answers To Tough Interview Questions - AOL

    www.aol.com/.../30-answers-tough-interview-questions

    Shutterstock By Vivian Giang and Jacquelyn Smith Some job interviewers ask tough questions to trip you up or to get you to reveal information you may be trying to conceal. Others want to get a ...

  7. 24 Ridiculous, Sad, And Even Creepy Stories Of What ... - AOL

    www.aol.com/lifestyle/24-ridiculous-sad-even...

    Image credits: cargdad #5. There was this girl a few years older than me who thought she was a werewolf among other things. As you can imagine a lot of kids who made fun of her.

  8. Donny Osmond honors brother Wayne after death at 73 ... - AOL

    www.aol.com/donny-osmond-honors-brother-wayne...

    Merrill Osmond, 71, also honored Wayne Osmond with a tribute. He wrote in a Facebook post that he immediately fell to his knees and prayed after learning his brother had a “massive stroke.” He ...

  9. Optical phenomenon - Wikipedia

    en.wikipedia.org/wiki/Optical_phenomenon

    Optical phenomena are any observable events that result from the interaction of light and matter. All optical phenomena coincide with quantum phenomena. [1] Common optical phenomena are often due to the interaction of light from the Sun or Moon with the atmosphere, clouds, water, dust, and other particulates.