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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Electrical engineering: 5 volt power distribution board
In this video we hack apart a bread board to create a 5 volt power distribution strip. The 5 volts comes from the center pin in the motor c…
VideoFree5 minutes
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Physics: Listen to variable resistance
Here we draw a line on a page and use it as a variable resistor in series with a speaker. What relationship do we hear? Does it sound linea…
VideoFree1 minute
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Class 11 Physics (India): Vector magnitude from graph
Sal finds the magnitude of a vector given its graph. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics …
VideoFree4
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Class 11 Physics (India): Total displacement for projectile
Reconstructing the total displacement vector for a projectile Class 11 Physics (India) Let's learn, practice, and master topics of class 11…
VideoFree14 minutes
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Class 11 Physics (India) - Hindi: Introduction to Newton's law of gravitation (Hindi)
A little bit on gravity. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, we've created the …
VideoFree7
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Class 11 Physics (India): Differentiating products
Sal differentiates eˣcos(x) using the product rule. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (…
VideoFree4
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Class 11 Physics (India): Specific gravity
In this video David explains what specific gravity means. He also shows how to calculate the value for specific gravity and use it to deter…
VideoFree3 minutes
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Electrical engineering: Motors/propulsion
In this video we re-wire Bit-zee's motors to include longer wires and then we re-attach them to his frame. This video shows more detail tha…
VideoFree6 minutes
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Class 11 Physics (India): Deriving formula for centripetal acceleration from angular velocity
Deriving formula for centripetal acceleration in terms of angular velocity. using linear speed formula. Class 11 Physics (India) Let's lear…
VideoFree6
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Class 11 Physics (India) - Hindi: Venturi effect and Pitot tubes (Hindi)
Ram explains the Venturi effect and the role and function of Pitot tubes. Class 11 Physics (India) - Hindi To help students who prefer to l…
VideoFree16
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Class 11 Physics (India): Acceleration vs. time graphs
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…
VideoFree15 minutes
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Class 11 Physics (India): Derivative as slope of curve
Sal solves a couple of problems where he interprets the derivative of a function at a point as the slope of the curve, or of the line tange…
VideoFree6
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Class 11 Physics (India): Space station speed in orbit
Speed necessary for the space station to stay in orbit Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physic…
VideoFree7 minutes
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Physics: Einstein velocity addition formula derivation
Einstein velocity addition formula derivation Physics Learn about the basic principles that govern the physical world around us. Solid unde…
VideoFree8 minutes
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Electrical engineering: LC natural response derivation 2
Starting from the differential equation, we come up with a proposed exponential solution and plug it into the equation. This gives us a cha…
VideoFree10 minutes