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  2. Shop Mark & Graham's Big Gift Event and save up to 50% off ...

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  3. Inflation is up 20% since Biden took office - AOL

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    Original article source: Inflation is up 20% since Biden took office. Show comments. Advertisement. Advertisement. In Other News. Entertainment. Entertainment. People.

  4. Regenerative braking - Wikipedia

    en.wikipedia.org/wiki/Regenerative_braking

    Regenerative braking is a two-step process involving the motor/generator and the battery. The initial kinetic energy is transformed into electrical energy by the generator and is then converted into chemical energy by the battery. This process is less efficient than the flywheel.

  5. Rayon - Wikipedia

    en.wikipedia.org/wiki/Rayon

    Rayon, also called viscose [1] and commercialised in some countries as sabra silk or cactus silk, [2] is a semi-synthetic fiber, [3] made from natural sources of regenerated cellulose, such as wood and related agricultural products. [4] It has the same molecular structure as cellulose.

  6. Raycom Media - Wikipedia

    en.wikipedia.org/wiki/Raycom_Media

    Raycom Media. Raycom Media, Inc. was an American television broadcasting company based in Montgomery, Alabama. Raycom owned and/or provided services for 65 television stations and two radio stations across 44 markets in 20 states. Raycom, through its Community Newspaper Holdings subsidiary, also owned multiple newspapers in small and medium ...

  7. Droop speed control - Wikipedia

    en.wikipedia.org/wiki/Droop_speed_control

    Droop speed control is a control mode used for AC electrical power generators, whereby the power output of a generator reduces as the line frequency increases. It is commonly used as the speed control mode of the governor of a prime mover driving a synchronous generator connected to an electrical grid. It works by controlling the rate of power ...

  8. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    In mathematics, a percentage (from Latin per centum 'by a hundred') is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign (%), [1] although the abbreviations pct., pct, and sometimes pc are also used. [2] A percentage is a dimensionless number (pure number), primarily used for expressing proportions ...

  9. Hydroelectricity - Wikipedia

    en.wikipedia.org/wiki/Hydroelectricity

    Hydroelectricity. The Three Gorges Dam in Central China is the world's largest power-producing facility of any kind. Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4,500 TWh in 2020, which is more than all other renewable sources ...

  10. 20 (number) - Wikipedia

    en.wikipedia.org/wiki/20_(number)

    20 is the length of a side of the fifth smallest right triangle that forms a primitive Pythagorean triple (20, 21, 29). It is the third tetrahedral number. In decimal, 20 is the smallest non-trivial neon number equal to the sum of its digits when raised to the thirteenth power (20 13 = 8192 × 10 13). [citation needed] Almost integers

  11. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    In 2020, hydropower supplied 17% of the world's electricity, down from a high of nearly 20% in the mid-to-late 20th century. In conventional hydropower, a reservoir is created behind a dam. Conventional hydropower plants provide a highly flexible, dispatchable electricity supply. They can be combined with wind and solar power to meet peaks in ...