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[1] [2] It is usually given in units of becquerel per kilogram (Bq/kg), but another commonly used unit of specific activity is the curie per gram (Ci/g). In the context of radioactivity , activity or total activity (symbol A ) is a physical quantity defined as the number of radioactive transformations per second that occur in a particular ...
The following equation can be used to easily convert between the two: [] = [] [] Here, and are any two numbers whose product equals the desired Langmuir value, is an integer allowing different magnitudes of pressure or exposure time to be used in conversion. The units are represented in the [square brackets].
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
Defining equation (physical chemistry) List of electromagnetism equations; List of equations in classical mechanics; List of equations in quantum mechanics; List of equations in wave theory; List of photonics equations; List of relativistic equations; Relativistic wave equations
ML −1 T −2: Internal Energy: U = J ML 2 T −2: Enthalpy: H = + J ML 2 T −2: Partition Function: Z: 1 1 Gibbs free energy: G = J ML 2 T −2: Chemical potential (of component i in a mixture) μ i
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.
In physics, natural unit systems are measurement systems for which selected physical constants have been set to 1 through nondimensionalization of physical units.For example, the speed of light c may be set to 1, and it may then be omitted, equating mass and energy directly E = m rather than using c as a conversion factor in the typical mass–energy equivalence equation E = mc 2.
A quantity equation, also sometimes called a complete equation, is an equation that remains valid independently of the unit of measurement used when expressing the physical quantities. [28] In contrast, in a numerical-value equation, just the numerical values of the quantities occur, without units. Therefore, it is only valid when each ...