In this video, David quickly explains each torque and angular concept and does a sample question for each one. Created by David SantoPietro.
In this video David quickly explains each concept for waves and simple harmonic motion and does an example question for each one. Created by David SantoPietro.
ATP synthase and its role in mitochondria during respiration and chloroplasts during photosynthesis.
A rational agent considers both accounting profit and economic profit. In this video, see an example highlighting the difference between accounting profit and economic profit from a business and a discussion of explicit and implicit costs of operating a business.
The simulation Sal mentions in the video can be found directly following this video in the lesson.
How and why a central bank would build foreign currency reserves. Created by Sal Khan.
In this section we will be talking about the basics of acids and bases and how acid-base chemistry is related to chemical equilibrium. We will cover acid and base definitions, pH, acid-base equilibria, acid-base properties of salts, and the pH of salt solutions.
Using the signal transduction pathway for the cholera toxin to understand activation and inhibition.
Exploring the actual weightings for the CPI-U basket of goods. Created by Sal Khan.
Adding a tail. Created by Karl Wendt.
An overview of Adding an event listener
In this video we explore how to derive the demand for a factor of production based on how productive that factor is and how much additional revenue that factor brings in. Created by Sal Khan.
Learn how to add event listeners in jQuery so that your JavaScript can respond to events on the page, like when a user clicks a button or drags an image.
To add the vectors (x₁,y₁) and (x₂,y₂), we add the corresponding components from each vector: (x₁+x₂,y₁+y₂). Here's a concrete example: the sum of (2,4) and (1,5) is (2+1,4+5), which is (3,9). There's also a nice graphical way to add vectors, and the two ways will always result in the same vector.
Explore the mechanics of adjustable rate mortgages (ARM) in this video, including how they work and in what situation an ARM might be advantageous and when it might work against you.
We've learned about demand for a good or service, but aggregate demand is different: its the demand for everything bought in an economy. In this video, we discuss how aggregate demand (AD) is different from demand and why aggregate demand is downward sloping. Created by Sal Khan.
How to combine data from a database using SQL.
Figuring how long it takes an A380 to take off given a constant acceleration. Created by Sal Khan.
This site teaches Arithmetic with Polynomials and Rational Expressions to High Schoolers through a series of 4333 questions and interactive activities aligned to 26 Common Core mathematics skills.
This site teaches High Schoolers how to create equations through a series of 298 questions and interactive activities aligned to 5 Common Core mathematics skills.