About Section
Just a small update. The website now has an About section.
cupcake physics
Blog
The Electric Field Due to a Line of Charge (Part 2)
I use the general expression for the electric field around a line of charge to analyze a few special cases.
Search Bar
The blog (finally) has a search bar.
The Electric Field Due to a Line of Charge (Part 1)
I use Coulomb's law for continuous charge distributions to derive an expression for the electric field around a line segment of charge.
A Bit of Housekeeping
There is no new material this week. However, I do go back through my old posts to add in references and updated graphics.
Charged Pendulum in an Electric Field
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.
The Velocity Selector
I go through a derivation of the speed of a charged particle that passes through a velocity selector.
Terminal Velocity
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.
Guessing the Direction of Current Flow in Kirchhoff's Loop Rule
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.
Thermodynamic Properties of the Quantum Harmonic Oscillator
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.
-
-
- Page: 2 of 7
-
-
