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Updated: May 20, 2025

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
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复杂变量运动方程合集群单元和双元理论与解决身份近似方法

Simen Camps1, Cansu Utku1, Joel Creutzberg1

  • 1Department of Chemistry, KU Leuven, 3001 Leuven, Belgium.

The journal of physical chemistry. A
|May 15, 2025
PubMed
概括

这项研究引入了一种计算效率高的复杂变量运动方程合集群单双 (EOM-CCSD) 方法,具有识别分辨率 (RI) 近似值,用于研究N2和CO等分子中的电子共振.

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The second kinematic equation expresses the final position of an object in terms of its initial position, the distance traveled with the initial constant velocity, and the distance traveled due to a change in velocity. Similar to the first kinematic equation, this equation is also only valid when the acceleration is constant throughout the motion of an object.
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The first two kinematic equations have time as a variable, but the third kinematic equation is independent of time. This equation expresses final velocity as a function of the acceleration and distance over which it acts. The fourth kinematic equation does not have an acceleration term and provides the final position of the object at time t in terms of the initial and final velocities. This equation is useful when the value of the constant acceleration is unknown.
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Consider a flywheel, having an uneven mass distribution, rotating steadily around a fixed axis. As this rotation occurs, the center of mass of the flywheel traces a circular path. Understanding the acceleration of this center of mass requires observing both its tangential and normal components.
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