Using the ratio of neutrons to protons to figure out of a nucleus will be stable or radioactive. Created by Jay.
Object Image and Focal Distance Relationship (Proof of Formula). Created by Sal Khan.
Object Image Height and Distance Relationship. Created by Sal Khan.
Introduction to pressure-volume diagrams.
Introduction to pressure-volume diagrams, part 2.
An introduction to parabolic mirrors, part 2. Created by Sal Khan.
An introduction to Parabolic Mirrors and Real Images. Created by Sal Khan.
Multiple resistors in parallel can be combined into a single equivalent resistor. Created by Willy McAllister.
Explaining the photoelectric effect using wave-particle duality, the work function of a metal, and how to calculate the velocity of a photoelectron. Created by Jay.
In this video, David explains what a photon is and how to determine the energy of a photon. Created by David SantoPietro.
In this video, David (and surfer Dan) explain how to determine the momentum of a photon.
This 10-minute video lesson looks at Newton's First Law (Galileo's Law of Inertia).
Sal explains the difference between liquids and gasses (both fluids). He then starts a calculation of the work done on a liquid in a U-shaped container. Created by Sal Khan.
Sal finishes the calculation of work to determine the mechanical advantage in a U-shaped tube. He also explains pressure and Pascal's Principle. Created by Sal Khan.
Sal derives the formula to determine the pressure at a specific depth in a fluid. Created by Sal Khan.
In this video David gives an introductory explanation of what the quantum wavefunction is, how to use it, and where it comes from.
Free body diagram for two masses connected by string-pulley system.
Acceleration of two masses connected by string-pulley system.
Impact of adding a third mass to our string-pulley system.
Testing energy consumption in a lightbulb.