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  2. 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, ... 1 × 10 0 C: Two like charges ... [14] 10 7: 10 8: 5.9 ...

  3. Orders of magnitude (energy) - Wikipedia

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

    The "kT" constant at 25 °C, a common rough approximation for the total thermal energy of each molecule in a system (0.03 eV) [13] 7–22×10 −21 J Energy of a hydrogen bond (0.04 to 0.13 eV) [11] [14] 10 −20 4.5×10 −20 J Upper bound of the mass–energy of a neutrino in particle physics (0.28 eV) [15] [16] 10 −19 1.602 176 634 × 10 ...

  4. 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.

  5. Vector algebra relations - Wikipedia

    en.wikipedia.org/wiki/Vector_algebra_relations

    The following are important identities in vector algebra.Identities that only involve the magnitude of a vector ‖ ‖ and the dot product (scalar product) of two vectors A·B, apply to vectors in any dimension, while identities that use the cross product (vector product) A×B only apply in three dimensions, since the cross product is only defined there.

  6. Classical central-force problem - Wikipedia

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

    By a transformation of variables, [14] any central-force problem can be converted into an equivalent parallel-force problem. [ note 6 ] In place of the ordinary x and y Cartesian coordinates, two new position variables ξ = x / y and η = 1/ y are defined, as is a new time coordinate τ τ = ∫ d t y 2 {\displaystyle \tau =\int {\frac {dt}{y ...

  7. Orders of magnitude (entropy) - Wikipedia

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

    The following list shows different orders of magnitude of entropy ... 5.74 J ⋅K −1: Standard ... Text is available under the Creative Commons Attribution ...

  8. Orders of magnitude (power) - Wikipedia

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

    510 × 10 4 W tech: highest allowed ERP for an FM band radio station in the United States [27] 10 5: 1.67 × 10 5 W tech: power consumption of UNIVAC 1 computer 2.5–8 × 10 5 W tech: approximate range of power output of 'supercars' (300 to 1000 hp) 4.5 × 10 5 W tech: approximate maximum power output of a large 18-wheeler truck engine (600 ...

  9. Four-current - Wikipedia

    en.wikipedia.org/wiki/Four-current

    is the charge density measured by an inertial observer O who sees the electric current moving at speed u (the magnitude of the 3-velocity); ρ 0 {\displaystyle \rho _{0}} is “the rest charge density”, i.e., the charge density for a comoving observer (an observer moving at the speed u - with respect to the inertial observer O - along with ...