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: Thermal expansion of ring (Hindi)
How to find the radius of a ring that has gone under thermal expansion. Class 11 Physics (India) - Hindi To help students who prefer to lea…
VideoFree12
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Class 11 Physics (India) - Hindi: Acceleration due to gravity at the space station (Hindi)
What is the acceleration due to gravity at the space station? Class 11 Physics (India) - Hindi To help students who prefer to learn by watc…
VideoFree9
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Class 11 Physics (India) - Hindi: Relative speed of sound in solids, liquids, and gases (Hindi)
Sounds travels at different speeds in different media. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hi…
VideoFree6
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Health and medicine: Cystic fibrosis pathophysiology
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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Class 11 Physics (India): Direction of vectors from components: 1st & 2nd quadrants
Sal first finds the direction angle of a vector in the first quadrant, then moves onto a trickier one in the second quadrant. Class 11 Phys…
VideoFree9
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Class 11 Physics (India) - Hindi: Elastic and inelastic collisions (Hindi)
Ram explains what it means for a collision to be elastic or inelastic. Class 11 Physics (India) - Hindi To help students who prefer to lear…
VideoFree14
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Physics: Question 2ab: 2015 AP Physics 1 free response
Physics Learn about the basic principles that govern the physical world around us. Solid understanding of algebra and a basic understanding…
VideoFree12 minutes
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Physics: Optimal angle for a projectile part 1: Components of initial velocity
You want a projectile to fly as far as possible, at which angle should you launch it? We'll start with formulas for the initial velocity. P…
VideoFree6 minutes
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Health and medicine: Exocrine pancreas
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree10 minutes
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Class 11 Physics (India): Gravity for astronauts in orbit
Why do astronauts appear weightless despite being near the Earth? Class 11 Physics (India) Let's learn, practice, and master topics of clas…
VideoFree7 minutes
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Class 10 Physics (India): Why is the sky blue?
Let's explore why the sky is blue, why the sunset/sunrise is red, why are clouds white. It's all due to scattering of light by the molecule…
VideoFree10
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Health and medicine: Extrapulmonary TB (part 1)
Learn about how TB can spread beyond your lungs. These videos do not provide medical advice and are for informational purposes only. The vi…
VideoFree9 minutes
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Health and medicine: What is gonorrhea?
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree8 minutes
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Class 11 Physics (India) - Hindi: Examples interpreting position time graphs (Hindi)
Using position-time graphs and number lines to find displacement and distance traveled. Class 11 Physics (India) - Hindi To help students w…
VideoFree12
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Health and medicine: Sensory adaptation
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree7 minutes