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In physics, there are equations in every field to relate physical quantities to each other and perform calculations. Entire handbooks of equations can only summarize most of the full subject, else are highly specialized within a certain field. Physics is derived of formulae only.
Classical mechanics is the branch of physics used to describe the motion of macroscopic objects. [1] It is the most familiar of the theories of physics. The concepts it covers, such as mass, acceleration, and force, are commonly used and known. [2] The subject is based upon a three-dimensional Euclidean space with fixed axes, called a frame of ...
A Magic Triangle image mnemonic - when the terms of Ohm's law are arranged in this configuration, covering the unknown gives the formula in terms of the remaining parameters. It can be adapted to similar equations e.g. F = ma , v = fλ , E = mcΔT , V = π r 2 h and τ = rF sin θ .
Symbol Name Meaning SI unit of measure nabla dot : the divergence operator often pronounced "del dot" per meter (m −1) : nabla cross : the curl operator often pronounced "del cross"
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The Cambridge Handbook of Physics Formulas. Cambridge University Press. ... Physics for Scientists and Engineers: With Modern Physics (6th ed.).
Statistical physics: Paul Langevin: Laplace's equation Laplace's tidal equations: Electromagnetism, Fluid dynamics Fluid dynamics: Pierre-Simon Laplace Pierre-Simon Laplace Legendre's equation: Spherical harmonics: Adrien-Marie Legendre: Leonard–Merritt formula: Astrophysics: Peter Leonard and David Merritt: Levy–Mises equations: Solid ...
Quantity (common name/s) (Common) symbol/s Defining equation SI units Dimension Number of atoms N = Number of atoms remaining at time t. N 0 = Initial number of atoms at time t = 0