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Sometimes specific volume is expressed in terms of the number of cubic centimeters occupied by one gram of a substance. In this case, the unit is the centimeter cubed per gram (cm 3 /g or cm 3 ·g −1). To convert m 3 /kg to cm 3 /g, multiply by 1000; conversely, multiply by 0.001. Specific volume is inversely proportional to density. If the ...
In terms of density, m = ρV, where ρ is the volumetric mass density, V is the volume occupied by the mass. This energy can be released by the processes of nuclear fission (~ 0.1%), nuclear fusion (~ 1%), or the annihilation of some or all of the matter in the volume V by matter– antimatter collisions (100%).
Energy density is the amount of energy per mass or volume of food. The energy density of a food can be determined from the label by dividing the energy per serving (usually in kilojoules or food calories) by the serving size (usually in grams, milliliters or fluid ounces). An energy unit commonly used in nutritional contexts within non-metric ...
Superconducting magnetic energy storage: 0.008 [35] >95% Capacitor: 0.002 [36] Neodymium magnet: 0.003 [37] Ferrite magnet: 0.0003 [37] Spring power (clock spring), torsion spring: 0.0003 [38] 0.0006: Storage type Energy density by mass (MJ/kg) Energy density by volume (MJ/L) Peak recovery efficiency % Practical recovery efficiency %
Heat capacity (constant volume) C v: J/K Specific heat capacity (constant volume) c v: J/(kg·K) Helmholtz free energy: A, F: J Helmholtz free entropy: Φ: J/K Internal energy: U: J Specific internal energy: u: J/kg Internal pressure: π T: Pa Mass: m: kg Particle number: N i – Chemical potential μ i: Pressure: p: Pa Volume V: Temperature: T ...
These two factors (constancy of atomic volume and constancy of mole-specific heat capacity) result in a good correlation between the volume of any given solid chemical element and its total heat capacity. Another way of stating this, is that the volume-specific heat capacity (volumetric heat capacity) of solid elements is roughly a constant.
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Any extensive quantity E for a sample can be divided by the sample's volume, to become the "E density" for the sample; similarly, any extensive quantity "E" can be divided by the sample's mass, to become the sample's "specific E"; extensive quantities "E" which have been divided by the number of moles in their sample are referred to as "molar E".