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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Health and medicine: Risk factors for coronary artery disease
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree13 minutes
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Health and medicine: C-section
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree11 minutes
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Class 11 Physics (India): Mass and weight clarification
Difference between mass and weight Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting w…
VideoFree11 minutes
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Class 11 Physics (India): Intuition behind formula for thermal conductivity
Intuition behind formula for thermal conductivity Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NC…
VideoFree6 minutes
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Class 11 Physics (India) - Hindi: Pressure and Pascal's principle (Hindi)
Ram explains the difference between liquids and gasses (both fluids). He then starts a calculation of the work done on a liquid in a U-shap…
VideoFree14
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Class 11 Physics (India): Linear velocity comparison from radius and angular velocity: Worked example
Linear velocity from the radius and angular velocity for two pumpkin catapults with different arm lengths. Class 11 Physics (India) Let's l…
VideoFree6
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Class 12 Physics (India): Capacitors in parallel
The effect on voltage and current when capacitors are constructed in parallel in a circuit. By David Santo Pietro. Class 12 Physics (India)…
VideoFree10 minutes
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Class 11 Physics (India): Intro to thermal expansion
What's buckling of a rail way track got to do with a thermometer? It's all about thermal expansion. In this video we will explore some day …
VideoFree11
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Class 11 Physics (India) - Hindi: Thermal Expansion in Liquids (Hindi)
Like solids, liquids too expand on heating. Let's find out more about how we can calculate the change and how liquid's thermal expansion is…
VideoFree7
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Class 12 Physics (India): Net electric field from multiple charges in 2D
In this video David solves an example 2D electric field problem to find the net electric field at a point above two charges. Class 12 Physi…
VideoFree10 minutes
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Class 11 Physics (India): Beat frequency
David explains what beat frequency means, how to find it, and solves a sample problem involving beat frequency. Class 11 Physics (India) Le…
VideoFree12 minutes
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Class 11 Physics (India): Harmonic motion part 3 (no calculus)
Figuring out the period, frequency, and amplitude of the harmonic motion of a mass attached to a spring. Class 11 Physics (India) Let's lea…
VideoFree10 minutes
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Class 11 Physics (India): Unit vector notation
Expressing a vector as the scaled sum of unit vectors Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics…
VideoFree10 minutes
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Class 11 Physics (India): Pressure and Pascal's principle (part 1)
Sal explains the difference between liquids and gasses (both fluids). He then starts a calculation of the work done on a liquid in a U-shap…
VideoFree10 minutes
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Class 12 Physics (India): Reverse biasing a PN junction
What happens if you connect the negative terminal to the P-type? In this video, we will explore what happens to a PN junction when it's P s…
VideoFree6