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  2. Orders of magnitude (energy) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(energy)

    Seismic energy of a magnitude 11 earthquake on Earth (M 11) [224] 1.5×10 22 J: Total energy from the Sun that strikes the face of the Earth each day [189] [225] 1.94×10 22 J Impact event that formed the Siljan Ring, the largest impact structure in Europe [226] 2.4×10 22 J: Estimated energy contained in the world's coal reserves as of 2010 ...

  3. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    The kinetic energy of a 2 kg mass travelling at 1 m/s, or a 1 kg mass travelling at 1.41 m/s. The energy required to lift an apple up 1 m, assuming the apple has a mass of 101.97 g. The heat required to raise the temperature of 0.239 g of water from 0 °C to 1 °C. [15] The kinetic energy of a 50 kg human moving very slowly (0.2 m/s or 0.72 km/h).

  4. Orders of magnitude (charge) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(charge)

    This article is a progressive and labeled list of the SI electric charge orders of magnitude, with certain examples appended to some list objects.

  5. Orders of magnitude (power) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(power)

    tech: electric power output of 1 m 2 solar panel in full sunlight (approx. 12% efficiency), at sea level 1.3 × 10 2: tech: peak power consumption of a Pentium 4 CPU 2 × 10 2: tech: stationary bicycle average power output [17] [18] 2.76 × 10 2: astro: fusion power output of 1 cubic meter of volume of the Sun's core. [19] 2.9 × 10 2: units ...

  6. Magnitude (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Magnitude_(mathematics)

    In mathematics, the magnitude or size of a mathematical object is a property which determines whether the object is larger or smaller than other objects of the same kind. More formally, an object's magnitude is the displayed result of an ordering (or ranking) of the class of objects to which it belongs.

  7. Order of magnitude - Wikipedia

    en.wikipedia.org/wiki/Order_of_magnitude

    Order of magnitude is a concept used to discuss the scale of numbers in relation to one another. Two numbers are "within an order of magnitude" of each other if their ratio is between 1/10 and 10. In other words, the two numbers are within about a factor of 10 of each other. [1] For example, 1 and 1.02 are within an order of magnitude.

  8. Classical central-force problem - Wikipedia

    en.wikipedia.org/wiki/Classical_central-force...

    In classical mechanics, the central-force problem is to determine the motion of a particle in a single central potential field.A central force is a force (possibly negative) that points from the particle directly towards a fixed point in space, the center, and whose magnitude only depends on the distance of the object to the center.

  9. 3-j symbol - Wikipedia

    en.wikipedia.org/wiki/3-j_symbol

    The triangular delta {j 1 j 2 j 3} is equal to 1 when the triad (j 1, j 2, j 3) satisfies the triangle conditions, and is zero otherwise. The triangular delta itself is sometimes confusingly called [4] a "3-j symbol" (without the m) in analogy to 6-j and 9-j symbols, all of which are irreducible summations of 3-jm symbols where no m variables ...