Khan Academy: 2757 products

Clarifying that the thermodynamic definition of Entropy requires a reversible system. Physics Learn about the basic principles that govern …

In this video David solves a few exmaple problems involving concave and convex mirrors using the mirror equation and magnification equation…

Figuring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane. Class 11 P…

Learn about the Doppler effect and how it explains the change in frequency of a wave when its source and an observer are moving. Class 11 P…

How to solve for the horizontal displacement when the projectile starts with a horizontal initial velocity. We also explain common mistakes…

Watch as fetal blood goes through umbilical vessels and takes a shortcut through the Ductus Venosus to make it back to the heart. Rishi is …

If a body is heated then it will expand and its volume will change. Let's find out how to calculate the change in the volume. Class 11 Phys…

Sal rewrites 100=10^2 as a logarithmic equation and log_5(1/125)=-3 as an exponential equation. Class 11 Physics (India) Let's learn, pract…

Constant multiple rule says that the derivative of f(x)=kg(x) is f'(x)=kg'(x). Sum/Difference rule says that the derivative of f(x)=g(x)±h(…

Hank introduces us to one of the most diverse and important families in the tree of life - the vascular plants. These plants have found tre…

What happens when there's way more than two holes? Class 12 Physics (India) It is now time to dive deeper into the world of physics with to…

Starting from the differential equation, we come up with a proposed exponential solution and plug it into the equation. This gives us a cha…

This video outlines in simple terms why a motor controller is needed and what it does Electrical engineering Learn about electricity, circu…

David explains how to read an acceleration vs. time graph. He then shows how the area under the curve gives the change in velocity and does…

Explaining trend in ionization energy down a group using concepts of nuclear charge, electron shielding, and distance of electrons from nuc…