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) - Hindi: Doppler effect introduction (Hindi)
Learn about the Doppler effect and how it explains the change in frequency of a wave when its source and an observer are moving. Class 11 P…
VideoFree14
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Health and medicine: Diagnosing strokes by history and physical exam
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree5 minutes
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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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Class 12 Physics (India): Induced current in a wire
Sal determines the current and EMF induced in a wire pulled through a magnetic field. Class 12 Physics (India) It is now time to dive deepe…
VideoFree12 minutes
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Organic chemistry: E-Z system
How to use the E-Z system to assign configurations to double bonds. Organic chemistry Sal and Jay cover topics covered in college organic c…
VideoFree12 minutes
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Organic chemistry: Acetals as protecting groups and thioacetals
How acetals are used as protecting groups. Thioacetals are similar to acetals, but form from reaction of an aldehyde with a thiol (not an a…
VideoFree8 minutes
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Class 11 Physics (India): Area between a curve and the x-axis
Based on the fundamental theorem of calculus, we can use antiderivatives to compute integrals. Class 11 Physics (India) Let's learn, practi…
VideoFree6
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Class 11 Physics (India) - Hindi: Inclined plane force components (Hindi)
Figuring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane. Class 11 P…
VideoFree12
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Chemistry: Solubility and the pH of the solution
Using le Chatelier's principle to see what happens to the solubility of calcium fluoride when pH is decreased. Also looks at effect of pH o…
VideoFree5 minutes
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Chemistry: Electrodes and voltage of Galvanic cell
Identifying the anode and cathode in a galvanic cell, and calculating the voltage using standard electrode potentials. Chemistry Did you kn…
VideoFree5 minutes
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Health and medicine: Small intestine 1: Structure
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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Health and medicine: Ruffini's Ending and Hair Follicle Receptor
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree8 minutes
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Class 11 Physics (India): Constant angular momentum when no net torque
Just like how linear momentum is constant when there's no net force, angular momentum is constant where there's no net torque Class 11 Phys…
VideoFree6 minutes
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Chemistry: Introduction to entropy
Introduction to entropy, and how entropy relates to the number of possible states for a system. Chemistry Did you know that everything is m…
VideoFree7 minutes
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Health and medicine: Epiglottitis diagnosis and treatment
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree11 minutes