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大学物理公式全集(Complete College Physics Formulas)
大学物理公式全集(Complete College Physics Formulas)
Complete College Physics Formulas
Basic concepts (definitions and related formulas)
Position vector: it is in the Cartesian coordinate system: angular position: theta
Speed: average speed: speed: angular speed:
Angular velocity versus velocity: V=r Omega
Acceleration: or average acceleration: angular acceleration:
In the natural coordinate system (=r, beta), (=r2, omega)
1. force: =m (or =) torque: (size: M=rFcos theta direction: right hand helix rule)
2. momentum: angular momentum: (size: L=rmvcos theta direction: right hand spiral rule)
3. impulse: (= t); power: (gas external work: A= formula PdV)
Mg (Zhong Li) MGH
-kx (elastic force) kx2/2
F= (gravitation) - =Ep
(electrostatic force)
4. kinetic energy: mV2/2
5. potential energy: A = = Ep, the potential energy forms of different interaction forces are different, and the choice of zeros is different, in different form, in the case of zero potential energy potential:
Mechanical energy: E=EK+EP
6. heat: the molar heat capacity C is related to the process. The relationship between the constant heat capacity Cv and the isobaric heat capacity Cp is: Cp=, Cv+R
7. pressure:
Average translational energy of 8. molecules: internal energy of ideal gas:
9. Maxwell velocity distribution function (meaning: the ratio of the number of molecules within a unit velocity interval around V)
10. average speed:
The root mean square speed; most probable speed:
11. entropy: S=Kln is the thermodynamic probability, that is, the number of microscopic states contained in a macroscopic state
12. electric field strength: =/q0 (point charge)
13. electric potential: (point to point charge); electric potential energy: Wa=qUa (A= - W)
14. capacitor: C=Q/U; capacitor storage: W=CU2/2; electric field energy density, Omega e= epsilon 0E2/2
15.: the size of the magnetic induction intensity, B=Fmax/qv (T); the direction of small needle point (S, N).
Laws and theorems
1. vector superposition principle: any vecto
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