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): Equation for center of mass
The center of mass is a point in a system that responds to external forces as if the total mass of the system were concentrated at this poi…
VideoFree6 minutes
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Class 11 Physics (India): Deflate gate
Using the ideal gas equation to calculate the change in air pressure in a football at different temperatures. Class 11 Physics (India) Let'…
VideoFree9 minutes
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Health and medicine: Three types of flu
Learn about the three types of influenza virus (Type A, Type B, and Type C) and what makes them differ from one another. Rishi is a pediatr…
VideoFree8 minutes
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Class 12 Physics (India): Solved example: Lens makers formula
Can a convex lens diverge a beam of light? Let's do some problem-solving and figure out the focal length of the convex lens when it's kept …
VideoFree11
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Electrical engineering: What is inside an alarm clock radio?
In this video we explore what is inside an alarm clock, how it is made, and how it works. Electrical engineering Learn about electricity, c…
VideoFree14 minutes
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Class 11 Physics (India): Radius comparison from velocity and angular velocity: Worked example
Predicting which spinning disc has a larger radius from angular velocity and the linear velocity of a point on the edge. Class 11 Physics (…
VideoFree4
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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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Class 11 Physics (India): Conservation of energy
Using the law of conservation of energy to see how potential energy is converted into kinetic energy Class 11 Physics (India) Let's learn, …
VideoFree10 minutes
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Class 10 Physics (India): Structure of human eye
Let's explore the major parts of our eye, and see what each one does. Created by Mahesh Shenoy Class 10 Physics (India) Let's explore the m…
VideoFree10
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Class 11 Physics (India): Derivation of gas constants using molar volume and STP
Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with kinematics and then moving to d…
VideoFree8
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Class 11 Physics (India): Work done by isothermic process
Isothermic and adiabatic processes. Calculating the work done by an isothermic process and seeing that it is the same as the heat added. Cl…
VideoFree19 minutes
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Class 12 Physics (India): Specular and diffuse reflection 2
Specular and Diffuse Reflection 2 Class 12 Physics (India) It is now time to dive deeper into the world of physics with topics from class 1…
VideoFree8 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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Class 11 Physics (India) - Hindi: 2 dimensional momentum problem (Hindi)
An example of conservation of momentum in two dimensions. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching…
VideoFree13
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Physics: Object image and focal distance relationship (proof of formula)
Object Image and Focal Distance Relationship (Proof of Formula) Physics Learn about the basic principles that govern the physical world aro…
VideoFree12 minutes