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  2. EN 62262 - Wikipedia

    en.wikipedia.org/wiki/EN_62262

    The European Standard EN 62262 — the equivalent of international standard IEC 62262 (2002) — relates to IK (impact protection) ratings. [1] This is an international numeric classification for the degrees of protection provided by enclosures for electrical equipment against external mechanical impacts.

  3. Dimensionless numbers in fluid mechanics - Wikipedia

    en.wikipedia.org/wiki/Dimensionless_numbers_in...

    Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.

  4. Brocard's problem - Wikipedia

    en.wikipedia.org/wiki/Brocard's_problem

    Brocard's problem is a problem in mathematics that seeks integer values of such that ! + is a perfect square, where ! is the factorial.Only three values of are known — 4, 5, 7 — and it is not known whether there are any more.

  5. Dean number - Wikipedia

    en.wikipedia.org/wiki/Dean_number

    The Dean number (De) is a dimensionless group in fluid mechanics, which occurs in the study of flow in curved pipes and channels.It is named after the British scientist W. R. Dean, who was the first to provide a theoretical solution of the fluid motion through curved pipes for laminar flow by using a perturbation procedure from a Poiseuille flow in a straight pipe to a flow in a pipe with very ...

  6. Fantasy football Start 'Em, Sit 'Em: Players to start or sit ...

    www.aol.com/fantasy-football-start-em-sit...

    With one game in the books and six teams on a bye, here are the players to start or sit from the remaining 24 teams in Week 14.

  7. 1 Social Security Change in 2025 Every Worker Needs to Know - AOL

    www.aol.com/1-social-security-change-2025...

    Income Limits 2024. Income Limits 2025. Benefit Reductions. If you're under FRA. $22,320 per year. $23,400 per year. $1 for every $2 over the limit. If you'll reach your FRA this year

  8. Capillary number - Wikipedia

    en.wikipedia.org/wiki/Capillary_number

    Flow through the pores in an oil reservoir has capillary number values in the order of 10 −6, whereas flow of oil through an oil well drill pipe has a capillary number in the order of unity. [ 4 ] The capillary number plays a role in the dynamics of capillary flow ; in particular, it governs the dynamic contact angle of a flowing droplet at ...

  9. Missing Girl, 17, Who Reportedly Left Home After Family ... - AOL

    www.aol.com/lifestyle/missing-girl-17-reportedly...

    Jennaleah “Jenna” Hin, 17, of Henderson, Nevada, was reported missing since Dec. 30 after she reportedly left home following a family dispute

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