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): Chain rule
The chain rule states that the derivative of f(g(x)) is f'(g(x))⋅g'(x). In other words, it helps us differentiate *composite functions*. Fo…
VideoFree5
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Class 11 Physics (India) - Hindi: Doppler effect formula when source is moving away (Hindi)
Let's look at the case where the source is moving away from the listener. Class 11 Physics (India) - Hindi To help students who prefer to l…
VideoFree11
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Organic chemistry: Double Newman diagram for methylcyclohexane
Double Newman diagram for methylcyclohexane Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic u…
VideoFree15 minutes
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Class 11 Physics (India) - Hindi: Solving elastic collision problems the hard way (Hindi)
In this video, Ram shows how to solve elastic problems the hard way. In other words, using conservation of momentum and conservation of kin…
VideoFree17
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Electrical engineering: Tools and parts to build a Spout
Make Spout a low cost beetle bot that can avoid obstacles. Spout is low cost and can be made without solder. Electrical engineering Learn a…
VideoFree1 minute
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Organic chemistry: E2 elimination: Substituted cyclohexanes
Examples of E2 elimination reactions involving substituted cyclohexanes. Organic chemistry Sal and Jay cover topics covered in college orga…
VideoFree13 minutes
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Class 10 Physics (India): Convex mirror & applications
When curved mirrors have a reflecting surface on the outside, they are called convex mirrors. (vex stands for bulging out). Let's learn wha…
VideoFree13
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Class 11 Physics (India): Vectors word problem: pushing a box
Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with kinematics and then moving to d…
VideoFree9
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Health and medicine: Electrical system of the heart
See where the pacemaker cells start the electrical wave of depolarization, and how it gets all the way to the ventricles of the heart. Rish…
VideoFree10 minutes
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Health and medicine: Patent ductus arteriosus
Patent ductus arteriosus is a medical condition where a blood vessel called the ductus arteriosus does not permanently close after birth. L…
VideoFree10 minutes
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Class 11 Physics (India) - Hindi: Airbus A380 take off distance (Hindi)
How long of a runway does an A380 need? Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, we'…
VideoFree9
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Health and medicine: Ischemic core and penumbra
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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Chemistry: Calculating internal energy and work example
Worked example calculating the change in internal energy for a gas using the first law of thermodynamics Chemistry Did you know that everyt…
VideoFree7 minutes
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Class 11 Physics (India): PV-diagrams and expansion work
Why work from expansion is the area under the curve of a PV-diagram. Why heat is not a state function and internal energy is a state functi…
VideoFree15 minutes
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Class 12 Physics (India): Energy of a capacitor
This video explains the potential of a capacitor and how they function in a circuit. By David Santo Pietro. Class 12 Physics (India) It is …
VideoFree6 minutes