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  2. Energy efficiency in transport - Wikipedia

    en.wikipedia.org/wiki/Energy_efficiency_in_transport

    Passenger transportation by rail systems requires less energy than by car or plane (one seventh of the energy needed to move a person by car in an urban context, [45]). This is the reason why, although accounting for 9% of world passenger transportation activity (expressed in pkm) in 2015, rail passenger services represented only 1% of final ...

  3. Vehicle frame - Wikipedia

    en.wikipedia.org/wiki/Vehicle_frame

    Ladder frame pickup truck chassis holds the vehicle's engine, drivetrain, suspension, and wheels The unibody - for the unitized body - is also a form of a frame. A vehicle frame, also historically known as its chassis, is the main supporting structure of a motor vehicle to which all other components are attached, comparable to the skeleton of an organism.

  4. Special relativity - Wikipedia

    en.wikipedia.org/wiki/Special_relativity

    Observer A holds a light-clock of length as well as an electronic timer with which she measures how long it takes a pulse to make a round trip up and down along the light-clock. Although observer A is traveling rapidly along a train, from her point of view the emission and receipt of the pulse occur at the same place, and she measures the ...

  5. Rail transport - Wikipedia

    en.wikipedia.org/wiki/Rail_transport

    A train is a connected series of rail vehicles that move along the track. Propulsion for the train is provided by a separate locomotive or from individual motors in self-propelled multiple units. Most trains carry a revenue load, although non-revenue cars exist for the railway's own use, such as for maintenance-of-way purposes.

  6. Round-trip engineering - Wikipedia

    en.wikipedia.org/wiki/Round-trip_engineering

    Round-trip engineering is often wrongly defined as simply supporting both forward and reverse engineering. In fact, the key characteristic of round-trip engineering that distinguishes it from forward and reverse engineering is the ability to synchronize existing artifacts that evolved concurrently by incrementally updating each artifact to ...

  7. This is what the human body would have to look like to ...

    www.aol.com/news/2016-07-21-this-is-what-the...

    An Australian sculptor has created a model of what the human body would have to look like to survive a car crash-- and it's the stuff of nightmares.. The artist, Melbourne-based Patricia Piccinini ...

  8. Here’s What It Really Costs To Own a Car in the US — And 7 ...

    www.aol.com/really-costs-own-car-us-190224017.html

    For many Americans, buying a car is among the most expensive purchases they will ever make. And car prices are on the rise. According to Kelley Blue Book, the average cost of a new car as of March ...

  9. Is It Ever Cheaper to Build a Home Instead of Buy One? - AOL

    www.aol.com/cheaper-build-buy-house-130057890.html

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