A simple physics–based equation for low–current impedance of a PEM fuel cell cathodePEM fuel cell impedanceModelingOxygen transport impedanceA solvable physical model for impedance of the cathode catalyst layer (CCL) in a PEM fuel cell is developed. The model includes reaction activation and ...
Nature Physics thanks Daniele Faccio and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. Additional information Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Extended data...
Learn to define what torque is in physics. Discover the torque symbol and the torque equation. Learn how to calculate torque. See examples of...
Understand what the equation for power is. Learn how to find power in physics using the power formulas. Practice the examples of calculating power...
An Equation of Motion in Physics refers to a mathematical expression that describes the motion of an object in a system. It is derived from the action principle and helps in predicting the future behavior of the system based on its current state. AI generated definition based on: Physics Repor...
The SchrÖdinger equation class is used to model a variety of phenomena, particularly those related to quantum physics, energy, and energy quantization. The nonlinear SchrÖdinger equation is the most typical equation for the development of slowly changing quasi-monochrome wave packets in weak ...
The formula for electric current is I=V/R. I stand for current, V stands for voltage, and R stands for resistance. What is flow of charge called? The flow of electric charge is referred to as "current." It is typically measured in amperes, also known as "amps."Electric...
What is an example of a force in physics? The most common examples of forces are gravitational and normal forces. Gravitational force is a non-contact force and is an attractive force between two objects with mass. For example, Earth exerts a gravitational force on the Moon. Normal force is...
The great majority of applications involve induction heating of metals; the impact of induced conduction current density J into total heat generation is much greater than the impact of displacement current density ∂D∂t. It is for this reason that, in the modeling of induction hardening, the...
This is an evolution equation for the probability density of a particle of a rarefied gas and its scope is to describe the thermodynamic behavior of a suitable class of macroscopic systems possibly not in thermal equilibrium. Here we want to illustrate the delicate passage from the Hamiltonian ...