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: Hib vaccine
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree9 minutes
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Class 11 Physics (India) - Hindi: Breaking down forces for free body diagrams (Hindi)
Ram explains how to draw free body diagrams when forces are applied at an angle. How to find horizontal and vertical components of an angle…
VideoFree11
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Class 12 Physics (India): Transistor as a switch
Let's see how we can exploit the cut off and saturation behaviour of a transistor and build an incredibly efficient switch. Class 12 Physic…
VideoFree7
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Organic chemistry: Preparation of sulfides
How to prepare sulfides from thiols. Sulfides are like ethers, but with a sulfur instead of an oxygen atom. Organic chemistry Sal and Jay c…
VideoFree7 minutes
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Class 11 Physics (India) - Hindi: Spring potential energy example (Hindi)
A spring, a frozen loop-d-loop and more!. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, w…
VideoFree13
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Class 11 Physics (India) - Hindi: Capillary action and why we see a meniscus (Hindi)
How capillary action and the meniscus are related to intermolecular forces in water. Class 11 Physics (India) - Hindi To help students who …
VideoFree9
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Class 11 Physics (India): Vector addition & magnitude
Sal explains some interesting properties of the magnitude of vector sums. Class 11 Physics (India) Let's learn, practice, and master topics…
VideoFree6
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Health and medicine: Vocal cord growths
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree5 minutes
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Physics: AP Physics 1 review of Forces and Newton's Laws
In this video David quickly explains each concept behind Forces and Newton's Laws and does a sample problem for each concept. Keep an eye o…
VideoFree17 minutes
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Physics: Electrolytic conductivity
Liquids can also conduct electricity Physics Learn about the basic principles that govern the physical world around us. Solid understanding…
VideoFree4 minutes
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Class 11 Physics (India): Acceleration
Calculating the acceleration of a Porsche Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) sta…
VideoFree9 minutes
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Class 10 Physics (India): Myopia & Hypermetropia
Let's explore the common defects in the eye, myopia (shortsightedness) and hypermetropia (farsightedness), using ray diagrams. Class 10 Phy…
VideoFree10
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Chemistry: Resonance and dot structures
Drawing resonance structures and resonance hybrid using example of nitrate anion. Chemistry Did you know that everything is made out of che…
VideoFree6 minutes
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Chemistry: Limiting reactant example problem 1
A limiting reagent problem to calculate mass of product and mass of excess reactant leftover after reaction. Chemistry Did you know that ev…
VideoFree19 minutes
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Physics: Lorentz transformation derivation part 1
Using symmetry of frames of reference and the absolute velocity of the speed of light (regardless of frame of reference) to begin to solve …
VideoFree11 minutes