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: Visual understanding of centripetal acceleration formula (Hindi)
Visual understanding of how centripetal acceleration relates to velocity and radius. Class 11 Physics (India) - Hindi To help students who …
VideoFree11
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Physics: Deriving max projectile displacement given time
Deriving a formula for maximum projectile displacement as a function of elapsed time Physics Learn about the basic principles that govern t…
VideoFree7 minutes
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Class 11 Physics (India) - Hindi: Work and energy part 2 (Hindi)
More on work. Introduction to Kinetic and Potential Energies. Class 11 Physics (India) - Hindi To help students who prefer to learn by watc…
VideoFree10
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Health and medicine: Heart attack (myocardial infarct) medications
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree6 minutes
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Electrical engineering: Power connector for the Arduino
In this video we show you how to create a power connector for your arduino. Electrical engineering Learn about electricity, circuit theory,…
VideoFree3 minutes
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Electrical engineering: Voltage divider
The output voltage is a fixed fraction of the input voltage. The ratio is determined by two resistors. Electrical engineering Learn about e…
VideoFree7 minutes
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Physics: Electrode (distance test)
Does the distance between the copper and zinc electrodes matter? What happens to the deflection when we hold them close vs. far apart? Why …
VideoFree1 minute
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Electrical engineering: Spider's power switch
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree6 minutes
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Class 11 Physics (India): Conservation of energy
Using the law of conservation of energy to see how potential energy is converted into kinetic energy Class 11 Physics (India) Let's learn, …
VideoFree10 minutes
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Class 11 Physics (India): Tangent identities: symmetry
Sal finds several trigonometric identities for tangent by considering horizontal and vertical symmetries of the unit circle. Class 11 Physi…
VideoFree7
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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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Class 11 Physics (India): Law of conservation of energy
Sal discusses how energy can't be created or destroyed in an isolated system, and works an example of how energy is transformed when a ball…
VideoFree11
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Class 12 Physics (India): Magnetic force on a proton example (part 1)
Sal does an example problem to determine the size and direction of the magnetic force on a proton moving through a magnetic field. Class 12…
VideoFree11 minutes
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Health and medicine: Auditory structure - part 1
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree11 minutes
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Electrical engineering: What is inside a DVD player? (5 of 5)
In this video we explore the laser assembly inside a DVD player. Electrical engineering Learn about electricity, circuit theory, and introd…
VideoFree3 minutes