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.
Learn more about ATP: how it stores energy, and how that energy is released when it's converted to ADP and phosphate. Created by Sal Khan.
ATP synthase and its role in mitochondria during respiration and chloroplasts during photosynthesis.
Using shell model diagram to relate absorption to emission. Derives relationship between emitted photon and energy levels, the Balmer-Rydberg equation. Created by Jay.
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction. Created by Sal Khan.
What is the acceleration due to gravity at the space station. Created by Sal Khan.
The simulation Sal mentions in the video can be found directly following this video in the lesson.
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.
Introduction to Act 1.
Overview of Act 2.
Introduction to Act 3.
Using the signal transduction pathway for the cholera toxin to understand activation and inhibition.
Adding a tail. Created by Karl Wendt.
An overview of Adding an event listener
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.
Some advice from our storytellers.
More advice to new writers.
Advice on editing.
Advice for storytellers.