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  2. NEMA enclosure types - Wikipedia

    en.wikipedia.org/wiki/NEMA_enclosure_types

    4 and 4X: Watertight. Must exclude at least 65 GPM of water from a 1-inch nozzle delivered from a distance not less than 10 feet for 5 min. Used outdoors on ship docks, in dairies, in wastewater treatment plants and breweries. X (as 4X) indicates additional corrosion resistance. 5: Dust-tight.

  3. Extraneous and missing solutions - Wikipedia

    en.wikipedia.org/wiki/Extraneous_and_missing...

    In mathematics, an extraneous solution (or spurious solution) is one which emerges from the process of solving a problem but is not a valid solution to it. [1] A missing solution is a valid one which is lost during the solution process.

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  5. Canon Extender EF - Wikipedia

    en.wikipedia.org/wiki/Canon_Extender_EF

    When used with a compatible lens, they will multiply the focal length of the lens by a factor of either 1.4x or 2x, at the cost of decreasing the lens' aperture by 1 or 2 stops respectively. For example, using a 1.4x or 2x extender with the Canon EF 500mm f/4L IS USM would result in a 700mm f/5.6 or 1000mm f/8 lens.

  6. Bell polynomials - Wikipedia

    en.wikipedia.org/wiki/Bell_polynomials

    For instance, in the above examples, the integer 3 can be partitioned into two parts as 2+1 only. Thus, there is only one monomial in B 3,2. However, the integer 6 can be partitioned into two parts as 5+1, 4+2, and 3+3. Thus, there are three monomials in B 6,2. Indeed, the subscripts of the variables in a monomial are the same as those given by ...

  7. How strong are your finances, really? Part two: 4 more money ...

    www.aol.com/finance/more-financial-questions-to...

    Age 35. 2x your salary. Age 40 ... 3x your salary. Age 45. 4x your salary. Age 50. 6x your salary. Age 55. 7x your salary. Age 60. 8x your salary. ... 2 men charged in NYC with running a fencing ...

  8. Redmi 4X - Wikipedia

    en.wikipedia.org/wiki/Redmi_4X

    The Redmi 4X features a 5-inch IPS LCD display with HD (1280 × 720) resolution, a 16:9 aspect ratio of and a pixel density of 294 ppi. The smartphone also received the main 13 MP with an f/2.0 aperture and phase detection autofocus, and the front 5 MP an f/2.2 aperture of.

  9. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]