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  2. R179 (New York City Subway car) - Wikipedia

    en.wikipedia.org/wiki/R179_(New_York_City_Subway...

    The first five-car set of R179s (3010–3014) was delivered to the New York City Transit Authority between September 6 and 8, 2016. The next five cars (3015–3019) were delayed and were delivered between November 15 and 17, 2016, forming a complete pilot ten-car train for acceptance testing and evaluation. [ 45 ]

  3. Skid mark - Wikipedia

    en.wikipedia.org/wiki/Skid_mark

    Skid marks are divided into "acceleration marks" created on acceleration, if the engine provides more power than the tire can transmit; "braking marks", if the brakes "lock up" and cause the tire to slide; or "yaw marks", if the tire slides sideways. Each skid mark has a characteristic appearance, and an experienced accident reconstructor or ...

  4. Shock response spectrum - Wikipedia

    en.wikipedia.org/wiki/Shock_response_spectrum

    A Shock Response Spectrum (SRS) [1] is a graphical representation of a shock, or any other transient acceleration input, in terms of how a Single Degree Of Freedom (SDOF) system (like a mass on a spring) would respond to that input. The horizontal axis shows the natural frequency of a hypothetical SDOF, and the vertical axis shows the peak ...

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  6. Siemens C651 - Wikipedia

    en.wikipedia.org/wiki/Siemens_C651

    Acceleration: 1 m /s 2 (3.3 ft/s 2) ... the C651s were delivered with a scratch-resistant acrylic finish. This alleviated the difficulty of removing dirt trapped on ...

  7. Fixed-field alternating gradient accelerator - Wikipedia

    en.wikipedia.org/wiki/Fixed-Field_Alternating...

    Fixed-field machines, such as cyclotrons and FFAs, use the former approach and allow the particle path to change with acceleration. In order to keep particles confined to a beam, some type of focusing is required. Small variations in the shape of the magnetic field, while maintaining the same overall field direction, are known as weak focusing.

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    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  9. X-COM: Genesis - Wikipedia

    en.wikipedia.org/wiki/X-COM:_Genesis

    A substantial number of the new hires came from the freshly shutdown EAI game development studio in Salt Lake City, Utah. The Chapel Hill development team, just after finishing X-COM: Interceptor, had completed converting the original X-COM games from DOS to Windows (using DirectX). Wanting to return to gameplay of the original games, the team ...