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 …
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Class 11 Physics (India) - Hindi: More on moment of inertia (Hindi)
In this video Ram explains more about what moment of inertia means, as well as giving the moments of inertia for commonly shaped objects. C…
VideoFree18
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Health and medicine: Neuromuscular junction, motor end-plate
How do neurons talk directly to muscle cells? Learn about how a neuronal message is translated into a muscular action at the neuromuscular …
VideoFree9 minutes
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Health and medicine: Photoreceptors (rods vs cones)
In this video, I explore the similarities and differences between rods and cones. By Ronald Sahyouni. Health and medicine The medical world…
VideoFree5 minutes
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Electrical engineering: Virtual ground
The idea of a "virtual ground" makes some simplifying assumptions, giving us an elegant and simple way to look at op-amp circuits. Electric…
VideoFree6 minutes
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Health and medicine: Panic disorder
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree5 minutes
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Class 11 Physics (India): Projectile motion graphs
Visualizing position, velocity and acceleration in two-dimensions for projectile motion Class 11 Physics (India) Let's learn, practice, and…
VideoFree8
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Class 11 Physics (India): Ideal gas equation example 2
PV/T is a constant. Figuring out the volume of an ideal gas at standard temperature and pressure (STP). Class 11 Physics (India) Let's lear…
VideoFree13 minutes
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Class 11 Physics (India): Horizontally launched projectile
How to solve for the horizontal displacement when the projectile starts with a horizontal initial velocity. We also explain common mistakes…
VideoFree12 minutes
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Class 11 Physics (India): Vertical springs and energy conservation
In this video, David explains two different strategies to deal with vertical springs and compares them with those used for horizontal sprin…
VideoFree14 minutes
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Health and medicine: What is preload?
Some say Preload = End-Diastolic Pressure, others say Preload = End-Diastolic Volume, so which one is it? Watch and find out! Rishi is a pe…
VideoFree14 minutes
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Class 11 Physics (India) - Hindi: Projectile height given time (Hindi)
Figuring out how high a ball gets given how long it spends in the air. Class 11 Physics (India) - Hindi To help students who prefer to lear…
VideoFree8
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Class 11 Physics (India) - Hindi: Change in centripetal acceleration from change in linear velocity and radius: Examples (Hindi)
Centripetal acceleration from linear and angular velocity. Class 11 Physics (India) - Hindi To help students who prefer to learn by watchin…
VideoFree5
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Class 11 Physics (India): Why do sounds get softer?
Let's think about why sounds would have to get softer as you get further from the source Class 11 Physics (India) Let's learn, practice, an…
VideoFree9 minutes
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Chemistry: Le Chatelier's principle
Le Chatlier's principle (also known as "Chatelier's principle" or "The Equilibrium Law") states that when a system experiences a disturbanc…
VideoFree15 minutes
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Electrical engineering: LC natural response intuition 2
We can predict the shape of voltage and current in an LC circuit by tracking the motion of charge as it flows back and forth. Electrical en…
VideoFree10 minutes