The four Kinematics Equations are useful for solving many different physics problems. Here I show you how to decide which equation to use when.
Category Archives: Physics
Momentum and Impulse
Momentum and impulse defined.
Elastic Collisions in One Dimension
In an elastic collision, momentum is conserved (as it is in most other collisions). However, an elastic collision also conserves kinetic energy, whereas an inelastic collision does not.
RC-Circuit with Direct Current – Differential Equation and Solutions
A once-over of the basic RC-circuit emphasizing math rather than physics. This a companion to my other video on the subject that emphasizes physics but has little math….
RC-Circuits 1: Charging and Discharging a Capacitor
Periodic Motion: Period, Frequency Angular Frequency
Any kind of motion where the same action is repeated over and over again counts as periodic motion. This includes circular motion, the swinging of a pendulum, Hooke’s Law motion (bouncing spring) and wave motion.
Capacitors in Parallel
An overview of electric charge, potential and capacitance of capacitors in parallel.
Capacitors in Series
An overview of the charge, potential, and capacitance of capacitors in series.
RC-Circuits 2: Short Term and Long Term Behavior
How to make sense of short-term and long-term behavior in RC circuits even when there is more than one resistor or capacitor.
This follows up from RC-Circuits Part 1:
RC-Circuits 1: Charging and Discharging a Capacitor
A basic explanation of what happens. Learn to derive all the equations you need, even if you don’t understand differential equations. Continue reading
Heat Capacity & Specific Heat
(2 videos) What exactly are “heat capacity,” “specific heat” and “specific heat capacity?”
(Hint: “specific heat” and “specific heat capacity” are the same thing.) Continue reading