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): Cross product 1
Introduction to the cross product Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting wi…
VideoFree10 minutes
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Chemistry: Hess's law and reaction enthalpy change
Using Hess's Law and standard heats of formation to determine the enthalpy change for reactions Chemistry Did you know that everything is m…
VideoFree16 minutes
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Health and medicine: Atrial septal defect
An atrial septal defect is a hole between the two atriums of the heart. Normally this hole is present at birth but closes within a few days…
VideoFree10 minutes
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Chemistry: Quantitative electrolysis
Calculating how much zinc deposits on the zinc electrode after 1.0 h when a current of 5.0 A is applied to the battery. Chemistry Did you k…
VideoFree7 minutes
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Class 11 Physics (India) - Hindi: Intuition on static and kinetic friction comparisons (Hindi)
Why static friction is harder to overcome than kinetic friction. Class 11 Physics (India) - Hindi To help students who prefer to learn by w…
VideoFree7
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Class 11 Physics (India): Carnot efficiency 2: Reversing the cycle
Seeing how we can scale and or reverse a Carnot Engine (to make a refrigerator) Class 11 Physics (India) Let's learn, practice, and master …
VideoFree14 minutes
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Chemistry: Balancing another combustion reaction
Balancing the combustion reaction of ethane, C₂H₆ Chemistry Did you know that everything is made out of chemicals? Chemistry is the study o…
VideoFree5 minutes
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Class 12 Physics (India): Exponential decay formula proof (can skip, involves calculus)
Showing that N(t)=Ne^(-kt) describes the amount of a radioactive substance we have at time T. For students with background in Calculus. Not…
VideoFree12 minutes
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Class 11 Physics (India) - Hindi: Work and the work energy principle (Hindi)
Ram explains the link between work and kinetic energy. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hi…
VideoFree8
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Class 11 Physics (India) - Hindi: Ultrasound medical imaging (Hindi)
Ultrasound medical imaging (also known as sonography) is a diagnostic imaging tool that uses high-frequency sound waves to create images of…
VideoFree8
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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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Class 11 Physics (India): Intro to slope
Sal shows how to find the slope of a line. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) st…
VideoFree7
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Class 11 Physics (India) - Hindi: Archimedes principle and buoyant force (Hindi)
Introduction to Archimedes' principle and buoyant force. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching …
VideoFree9
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Electrical engineering: Tools and parts to build a Spout
Make Spout a low cost beetle bot that can avoid obstacles. Spout is low cost and can be made without solder. Electrical engineering Learn a…
VideoFree1 minute
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Class 11 Physics (India): Derivative & the direction of a function
Sal analyzes various graphs to find intervals where the derivative of the graphed function is positive or negative. Class 11 Physics (India…
VideoFree3