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  2. Characteristic length - Wikipedia

    en.wikipedia.org/wiki/Characteristic_length

    In physics, a characteristic length is an important dimension that defines the scale of a physical system. Often, such a length is used as an input to a formula in order to predict some characteristics of the system, and it is usually required by the construction of a dimensionless quantity, in the general framework of dimensional analysis and in particular applications such as fluid mechanics.

  3. Square-root sum problem - Wikipedia

    en.wikipedia.org/wiki/Square-root_sum_problem

    SRS can be solved in polynomial time in the Real RAM model. [3] However, its run-time complexity in the Turing machine model is open, as of 1997. [1] The main difficulty is that, in order to solve the problem, the square-roots should be computed to a high accuracy, which may require a large number of bits.

  4. Hydraulic diameter - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_diameter

    For the limiting case of a very wide duct, i.e. a slot of width b, where b ≫ a, and a is the water depth, then D H = 4a. For a fully filled duct or pipe whose cross-section is a convex regular polygon , the hydraulic diameter is equivalent to the diameter D {\displaystyle D} of a circle inscribed within the wetted perimeter .

  5. List of NP-complete problems - Wikipedia

    en.wikipedia.org/wiki/List_of_NP-complete_problems

    This is a list of some of the more commonly known problems that are NP-complete when expressed as decision problems. As there are thousands of such problems known, this list is in no way comprehensive. Many problems of this type can be found in Garey & Johnson (1979).

  6. Eric Dickerson isn't rooting for Saquon Barkley to break his ...

    www.aol.com/sports/eric-dickerson-isnt-rooting...

    O.J. Simpson was the first to break the 2,000-yard mark in 1973 with the Buffalo Bills — doing so in 14 games. Here is the current list of 2,000 rushers: Eric Dickerson - 2,105 (1984)

  7. Power, root-power, and field quantities - Wikipedia

    en.wikipedia.org/wiki/Power,_root-power,_and...

    A root-power quantity is a quantity such as voltage, current, sound pressure, electric field strength, speed, or charge density, the square of which, in linear systems, is proportional to power. [3] The term root-power quantity refers to the square root that relates these quantities to power.

  8. Massachusetts ‘idiot’ gets stuck in chimney while trying to ...

    www.aol.com/news/naughty-list-massachusetts...

    A Massachusetts man was caught in the middle of some “Santa-antics” and got stuck in a chimney while trying to evade police executing a search warrant on his home.

  9. Putin accuses West of pushing Russia to its "red lines ... - AOL

    www.aol.com/news/putin-accuses-west-pushing...

    Russian President Vladimir Putin on Monday accused the West of pushing Russia to its "red lines" - situations it has publicly made clear it will not tolerate - and said Moscow had been forced to ...