Video demonstration experiments show the laws and concepts in action.
A mixture of multiple-choice and free-response problems aimed at developing critical thinking. Detailed solutions to all problems are provided.
Problem-Solving Videos present detailed solutions to multi-step questions. These videos are structured to improve problem-solving skills.
Review Videos summarize major topics. This resource incorporates explanations, derivations, and demonstrations to illustrate a concept.
Video demonstration experiments show the laws and concepts in action.
A mixture of multiple-choice and free-response problems aimed at developing critical thinking. Detailed solutions to all problems are provided.
Problem-Solving Videos present detailed solutions to multi-step questions. These videos are structured to improve problem-solving skills.
Review Videos summarize major topics. This resource incorporates explanations, derivations, and demonstrations to illustrate a concept.
Intuition behind how heat gets transferred through thermal conduction.
Fire as thermal conduction, convection, and radiation.
Why metal at room temperature feels cooler than wood at room temperature.
Intuition of how gases generate pressure in a container and why pressure x volume is proportional to the combined kinetic energy of the molecules in the volume. Created by Sal Khan.
To begin, Sal solves a constant temperature problem using PV=PV. Then he relates temperature to kinetic energy of a gas. In the second half of the video, he derives the ideal gas law. Created by Sal Khan.
Sal makes the case for the Kelvin scale of temperature and absolute zero by showing that temperature is proportional to kinetic energy. Then he explains that you need to use the Kelvin scale in the ideal gas law. To finish he does a sample ideal gas law problem. Created by Sal Khan.
Sal explains the concept of a mole. Then he derives the molar version of the ideal gas law PV=nRT, where the gas constant R=831 J/molK. Created by Sal Khan.
Sal uses the molar version of the ideal gas law to solve for the number of moles in a gas. He also shows how to convert this answer into number of molecules using Avogadro's number. Created by Sal Khan.
Thin film interference occurs when light waves reflecting off the top and bottom surfaces of a thin film interfere with one another. This type of interference is the reason that thin films, such as oil or soap bubbles, form colorful patterns. Created by David SantoPietro.
Let's work out a few details on how thin film interference works. Created by David SantoPietro.
Some examples of using the thin lens equation. Created by David SantoPietro.