#### Search Bar

The blog (finally) has a search bar.

The blog (finally) has a search bar.

I use Coulomb's law for continuous charge distributions to derive an expression for the electric field around a line segment of charge.

There is no new material this week. However, I do go back through my old posts to add in references and updated graphics.

This is a simple statics problem that combines free-body diagrams with electric force. It is often the first time that students see concepts from classical mechanics combined with concepts from electromagnetism in a non-trivial way.

I go through a derivation of the speed of a charged particle that passes through a velocity selector.

Objects don't usually fall in a vacuum! I derive an expression for the terminal velocity of a falling object for Stokes' and turbulent drag.

It is very easy to get your paths and currents mixed up when using Kirchhoff's loop rule. I go through a (very) simple circuit problem and demonstrate how different paths and currents will yield answers with the same magnitude, but different sign.

The analysis of the quantum harmonic oscillator usually stops at finding the energy levels. In this post I take the analysis a little further, calculating some of the thermodynamic properties of a quantum harmonic oscillator.

The work-energy theorem is applicable outside of the domain of classical mechanics. I derive an expression for the relativistic kinetic energy gained by a particle from an incident force over some distance.

I go through the famous "zipper problem", taking some time to talk about a subtle phase transition published by Charles Kittel.