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  2. Push–pull train - Wikipedia

    en.wikipedia.org/wiki/Pushpull_train

    Pushpull is a configuration for locomotive-hauled trains, allowing them to be driven from either end of the train, whether having a locomotive at each end or not. A pushpull train has a locomotive at one end of the train, connected via some form of remote control, such as multiple-unit train control , to a vehicle equipped with a control ...

  3. Push–pull output - Wikipedia

    en.wikipedia.org/wiki/Pushpull_output

    A Class B pushpull output driver using a pair of complementary PNP and NPN bipolar junction transistors configured as emitter followers. A pushpull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a connected load. This kind of amplifier can enhance ...

  4. Force - Wikipedia

    en.wikipedia.org/wiki/Force

    The Ehrenfest theorem provides a connection between quantum expectation values and the classical concept of force, a connection that is necessarily inexact, as quantum physics is fundamentally different from classical. In quantum physics, the Born rule is used to calculate the expectation values of a position measurement or a momentum ...

  5. Newton's laws of motion - Wikipedia

    en.wikipedia.org/wiki/Newton's_laws_of_motion

    [10] [11] Moreover, words which are synonymous in everyday speech are not so in physics: force is not the same as power or pressure, for example, and mass has a different meaning than weight. [12] [13]: 150 The physics concept of force makes quantitative the everyday idea of a push or a pull. Forces in Newtonian mechanics are often due to ...

  6. Newton's cradle - Wikipedia

    en.wikipedia.org/wiki/Newton's_cradle

    Newton's cradle is a device, usually made of metal, that demonstrates the principles of conservation of momentum and conservation of energy in physics with swinging spheres. When one sphere at the end is lifted and released, it strikes the stationary spheres, compressing them and thereby transmitting a pressure wave through the stationary ...

  7. Scientists Defy Physics, Basically Pull Energy Out of Thin Air

    www.aol.com/lifestyle/scientists-defy-physics...

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  8. Why You Should Add Push-Pull Workouts To Your Fitness ... - AOL

    www.aol.com/why-add-push-pull-workouts-120000058...

    A push-pull-legs workout is a full-body program that splits your training over three days: an upper-body push day, an upper-body pull day, and a lower-body day, says Rothberg.

  9. Propulsion - Wikipedia

    en.wikipedia.org/wiki/Propulsion

    Armadillo Aerospace's quad rocket vehicle showing shock diamonds in the exhaust plume from its propulsion system. Propulsion is the generation of force by any combination of pushing or pulling to modify the translational motion of an object, which is typically a rigid body (or an articulated rigid body) but may also concern a fluid. [1]