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  2. National Council of Educational Research and Training

    en.wikipedia.org/wiki/National_Council_of...

    NCERT has a comprehensive extension program in which departments of the National Institute of Education, Regional Institute of Education, Central Institute of Vocational Education, and field coaches' offices in the states are engaged in activities. Several programs are organized in rural and backward areas to reach out to functionaries in these ...

  3. Frictional contact mechanics - Wikipedia

    en.wikipedia.org/wiki/Frictional_contact_mechanics

    This theory is exact for the situation of an infinite friction coefficient in which case the slip area vanishes, and is approximative for non-vanishing creepages. It does assume Coulomb's friction law, which more or less requires (scrupulously) clean surfaces. This theory is for massive bodies such as the railway wheel-rail contact.

  4. Drag (physics) - Wikipedia

    en.wikipedia.org/wiki/Drag_(physics)

    A body is known as bluff or blunt when the source of drag is dominated by pressure forces, and streamlined if the drag is dominated by viscous forces. For example, road vehicles are bluff bodies. [8] For aircraft, pressure and friction drag are included in the definition of parasitic drag. Parasite drag is often expressed in terms of a ...

  5. Friction - Wikipedia

    en.wikipedia.org/wiki/Friction

    Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other. [7] [8] Lubricated friction is a case of fluid friction where a lubricant fluid separates two solid surfaces. [9] [10] [11] Skin friction is a component of drag, the force resisting the motion of a fluid across the surface of a body.

  6. Do I have to reenroll in Medicare every year?

    www.aol.com/lifestyle/reenroll-medicare-every...

    Most people do not have to reenroll in Medicare unless their coverage lapses. Learn more here.

  7. Tribology - Wikipedia

    en.wikipedia.org/wiki/Tribology

    Tribology is the science and engineering of understanding friction, lubrication and wear phenomena for interacting surfaces in relative motion.It is highly interdisciplinary, drawing on many academic fields, including physics, chemistry, materials science, mathematics, biology and engineering. [1]

  8. Muscle cramps are a pain. These expert-approved tips can help ...

    www.aol.com/muscle-cramps-pain-expert-approved...

    At one point or another, we’ve all experienced the unexpected, intense pain of a muscle cramp. Muscle cramps, also known as muscle spasms or charley horses, are the involuntary contraction of ...

  9. NFL in Germany: Who's playing in the NFL Germany game ... - AOL

    www.aol.com/nfl-germany-whos-playing-nfl...

    The NFL is returning to Germany for a couple of games in 2024. First up will be a matchup between the Giants and Panthers.