Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
check_box_outline_blank
Chemistry: Using the Arrhenius equation
How to use the Arrhenius equation to calculate the activation energy. Chemistry Did you know that everything is made out of chemicals? Chem…
VideoFree11 minutes
check_box_outline_blank
Electrical engineering: Design review (calibration)
Final step in the coin detector challenge Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We …
VideoFree4 minutes
check_box_outline_blank
Class 11 Physics (India): Conservation of angular momentum
How angular momentum is conserved within a system when there is no external torque. Class 11 Physics (India) Let's learn, practice, and mas…
VideoFree7
check_box_outline_blank
Class 11 Physics (India) - Hindi: Projectile motion graphs (Hindi)
Visualizing position, velocity, and acceleration in two-dimensions for projectile motion. Class 11 Physics (India) - Hindi To help students…
VideoFree14
check_box_outline_blank
Health and medicine: End diastolic pressure-volume relationship (EDPVR)
Find out what happens when the left ventricle is not allowed to contract, and instead you simply add and take away blood from it. Rishi is …
VideoFree10 minutes
check_box_outline_blank
Health and medicine: What is myocarditis and pericarditis?
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree7 minutes
check_box_outline_blank
Health and medicine: Laryngomalacia
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree5 minutes
check_box_outline_blank
Physics: Introduction to mechanical advantage
Introduction to simple machines, mechanical advantage and moments. Physics Learn about the basic principles that govern the physical world …
VideoFree10 minutes
check_box_outline_blank
Health and medicine: What is acyanotic heart disease?
Acyanotic heart disease is a group of heart conditions where blood with oxygen mixes with blood with little oxygen in the heart. This mixin…
VideoFree6 minutes
check_box_outline_blank
Class 11 Physics (India): Surface tension
Surface tension in water, and how the surface tension is related to hydrogen bonding. Class 11 Physics (India) Let's learn, practice, and m…
VideoFree5 minutes
check_box_outline_blank
Class 11 Physics (India): Gravity for astronauts in orbit
Why do astronauts appear weightless despite being near the Earth? Class 11 Physics (India) Let's learn, practice, and master topics of clas…
VideoFree7 minutes
check_box_outline_blank
Class 12 Physics (India): Induced current in a wire
Sal determines the current and EMF induced in a wire pulled through a magnetic field. Class 12 Physics (India) It is now time to dive deepe…
VideoFree12 minutes
check_box_outline_blank
Physics: Floating magnet
Can you use a magnet as a compass? How can you find North vs. South pole? Physics Learn about the basic principles that govern the physical…
VideoFree1 minute
check_box_outline_blank
Class 11 Physics (India) - Hindi: Viscosity and Poiseuille flow (Hindi)
Ram explains the concept of viscosity, viscous force, and Poiseuille's law. Class 11 Physics (India) - Hindi To help students who prefer to…
VideoFree18
check_box_outline_blank
Class 12 Physics (India): Electric field
We can think of the forces between charges as something that comes from a property of space. That property is called the electric field. Cl…
VideoFree14 minutes