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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Physics: Electromagnetic field (forward vs. reverse)
Apply current in both directions and notice the response is different. Physics Learn about the basic principles that govern the physical wo…
VideoFree1 minute
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Class 11 Physics (India): Evaluating logarithms (advanced)
Sal evaluates log₂(8), log₈(2), log₂(⅛), and log₈(½). Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics…
VideoFree4
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Class 11 Physics (India): Positive & negative slope
Sal analyzes what it means for a slope to be positive or negative (spoiler: it affects the direction of the line!) Class 11 Physics (India)…
VideoFree5
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Health and medicine: Sympathetic nerves affect myosin activity
Check out how the amount of Myosin that is tugging on your heart can change depending on your activity level! Rishi is a pediatric infectio…
VideoFree12 minutes
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Class 11 Physics (India): The dot product
Introduction to the vector dot product. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) start…
VideoFree11 minutes
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Class 11 Physics (India) - Hindi: Solved example: Stress and strain (Hindi)
In this video, we will solve a numerical on calculating strain. Class 11 Physics (India) - Hindi To help students who prefer to learn by wa…
VideoFree7
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Class 12 Physics (India): Minority charge carriers in extrinsic semiconductors
When we add impurities to semiconductors, what happens to minority charge carriers? Do they remain the same? In this video, we will explore…
VideoFree12
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Physics: Mechanical advantage (part 2)
More on mechanical advantage, levers and moments. Physics Learn about the basic principles that govern the physical world around us. Solid …
VideoFree7 minutes
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Health and medicine: Pacinian's Corpuscle and Merkel's Disk
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree7 minutes
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Electrical engineering: Motor controller
In this video we take you step by step through building the L298 Motor driver. This controller allows you to use your Arduino to control th…
VideoFree10 minutes
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Organic chemistry: Formation of hydrates
How ketones and aldehydes react with water to form hydrates. Organic chemistry Sal and Jay cover topics covered in college organic chemistr…
VideoFree7 minutes
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Class 11 Physics (India): Projectile at an angle
Figuring out the horizontal displacement for a projectile launched at an angle Class 11 Physics (India) Let's learn, practice, and master t…
VideoFree13 minutes
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Health and medicine: Risk factors for dementia
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree6 minutes
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Class 11 Physics (India): Bowling ball in vertical loop
In this video David explains how to find the normal force on a bowling ball rolling in a vertical loop. Class 11 Physics (India) Let's lear…
VideoFree9 minutes
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Organic chemistry: Resonance structures for benzene and the phenoxide anion
Examples of how to draw resonance structures for molecules with aromatic rings. Organic chemistry Sal and Jay cover topics covered in colle…
VideoFree7 minutes