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  1. Renewable energy, green energy, or low-carbon energy is energy from renewable resources that are naturally replenished on a human timescale. Renewable resources include sunlight, wind, the movement of water, and geothermal heat.[1][2][3][4][5][6][7][excessive citations] Although most renewable energy sources are sustainable, some are not. For ...

  2. Émilie du Châtelet (1706–1749) with a pair of compasses in her right hand. She was the first to publish the relation for kinetic energy .This means that an object with twice the speed hits four times – 2×2 – harder. (Portrait by Maurice Quentin de La Tour.) In physics, the kinetic energy of an object is the form of energy that it possesses due to its motion.

    • KE, Eₖ, K or T
  3. Guallatiri is a stratovolcano in Chile that is 6,060–6,071 m (19,880–19,918 ft) high. It is located southwest of, or possibly within, the Nevados de Quimsachata volcanic group. The summit, surrounded by numerous fumaroles, may be a lava dome or volcanic plug, while the lower flanks of the volcano are covered by lava flows and lava domes.

  4. en.wikipedia.org › wiki › CaffeineCaffeine - Wikipedia

    Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. [9] It is mainly used as a eugeroic ( wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. [10] [11] Caffeine acts by blocking binding of adenosine to the adenosine A 1 receptor, which enhances release of the ...

  5. External links. Pascal (unit) The pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI). It is also used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. The unit, named after Blaise Pascal, is a SI coherent derived unit defined as one newton per square metre (N/m 2 ). [1] .

  6. The Three-Body Problem (Chinese: 三体; lit. 'three body') is a story by Chinese science fiction author Liu Cixin, the first novel in the Remembrance of Earth's Past trilogy. The series portrays a fictional past, present and future wherein Earth encounters an alien civilization from a nearby system of three sun-like stars orbiting one another, a representative example of the three-body ...

  7. en.wikipedia.org › wiki › TorqueTorque - Wikipedia

    For a rotating object, the linear distance covered at the circumference of rotation is the product of the radius with the angle covered. That is: linear distance = radius × angular distance. And by definition, linear distance = linear speed × time = radius × angular speed × time. By the definition of torque: torque = radius × force.

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