Khan Academy: 2757 products

Learn the most common symptoms (or lack thereof!) and the two major categories of hypertension. Rishi is a pediatric infectious disease phy…

In this video David explains how to find the acceleration of two masses hanging from a pulley (using the easy method). Class 11 Physics (In…

Find out how the flu spreads from person to person, and who is at the greatest risk of getting complications of the flu. Rishi is a pediatr…

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 nu…

Using u-substitution to find the anti-derivative of a function. Seeing that u-substitution is the inverse of the chain rule. Class 11 Physi…

Kirchhoff's Current Law says the currents flowing into a node must add up to zero. Class 12 Physics (India) It is now time to dive deeper i…

Learn the two ways that oxygen moves from the lungs to the tissues, and the three ways that carbon dioxide returns from the tissues to the …

You want a projectile to fly as far as possible, at which angle should you launch it? We'll start with formulas for the initial velocity. P…

Watch the pressure in the left heart go up and down with every heart beat! Rishi is a pediatric infectious disease physician and works at K…

In this video, David solves an example elastic collision problem to find the final velocities using the easier/shortcut approach. Class 11 …

Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…

In this video we show you how to determine which wire is which and how to connect them to your Arduino. Electrical engineering Learn about …

Introduction to transverse and longitudinal waves. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi …

Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between …

Functions assign a single output for each of their inputs. In this video, we see examples of various kinds of functions. Class 11 Physics (…