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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Electrical engineering: LC natural response derivation 4
In this final step of the derivation, we find two initial conditions and use them to come up with a sinusoidal solution for the LC natural …
VideoFree8 minutes
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Electrical engineering: Variable block (counter)
Store values using the variable block (build a counter) Electrical engineering Learn about electricity, circuit theory, and introductory el…
VideoFree8 minutes
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Organic chemistry: Williamson ether synthesis
Two-step synthesis of an ether from an alcohol, A strong base is a dded to deprotonate the alcohol, which then attacks an alkyl halide. Org…
VideoFree7 minutes
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Organic chemistry: Coupling constant
Predicting splitting patterns based on the molecular structure. Finding coupling constants from the peaks in a multiplet, and using roofing…
VideoFree6 minutes
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Organic chemistry: Integration
How the area under each proton NMR signal can tell us the number of protons in a certain chemical environment Organic chemistry Sal and Jay…
VideoFree5 minutes
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Chemistry: Titration of a weak acid with a strong base
Calculating the pH for titration of acetic acid with strong base NaOH before adding any base and at half-equivalence point. Chemistry Did y…
VideoFree14 minutes
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Physics: Lorentz transformation derivation part 3
Finishing our Lorentz transformation derivation for t'. Physics Learn about the basic principles that govern the physical world around us. …
VideoFree11 minutes
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Class 11 Physics (India): Anomalous expansion of water
Why does ice float on water? You may already know that ice is less dense than water, but why? Usually, solids are denser than liquids. In t…
VideoFree10
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Class 11 Physics (India): Thermodynamics part 5: Molar ideal gas law problem
Sal uses the molar version of the ideal gas law to solve for the number of moles in a gas. He also shows how to convert this answer into nu…
VideoFree8 minutes
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Class 12 Physics (India): Simplifying resistor networks
A systematic approach to simplify a complicated resistor network by looking for series and parallel resistor patterns. Class 12 Physics (In…
VideoFree8 minutes
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Class 11 Physics (India): Charles's law
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 10 Physics (India): Laws of reflection
In this video, we will explore what diffused (scattered) & specular (regular) reflections are, and also learn the rules governing the refle…
VideoFree10
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Class 11 Physics (India) - Hindi: Balanced and unbalanced forces (Hindi)
A primer on identifying balanced and unbalanced forces. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching H…
VideoFree8
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Class 11 Physics (India): Pressure and Pascal's principle (part 2)
Sal finishes the calculation of work to determine the mechanical advantage in a U-shaped tube. He also explains pressure and Pascal's Princ…
VideoFree10 minutes
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Physics: Reverse electrodes (polarity)
What happens to the deflection when we attach the penny and zinc in the opposite direction? Physics Learn about the basic principles that g…
VideoFree1 minute