Identical spheres falling from the same height with different horizontal velocities.
Fundamental frequencies (first harmonics) of strings.
A discussion of the various ways to measure return on assets. Created by Sal Khan.
More on the return on asset discussion. Created by Sal Khan.
When acceleration could involve a change in direction and not speed. Created by Sal Khan.
Predicting which spinning disc has a larger radius from angular velocity and the linear velocity of a point on the edge.
Radius of Observable Universe. Created by Sal Khan.
(Correction) Radius of Observable Universe. Created by Sal Khan.
Raising money from an angel investor. Pre-money and post-money valuation. Created by Sal Khan.
Sal's random predictions for the year 2060. Created by Sal Khan.
Overview of reaction coupling to create glucose-6-phosphate.
Nominal GDP measures output using current prices, but real GDP measures output using constant prices. In this video, we explore how price changes can distort GDP using a visual representation of GDP. Created by Sal Khan.
Thinking about how high utilization could drive price as another justification for an upward sloping short-run aggregate supply curve. Created by Sal Khan.
The real interest rate reflects the additional purchasing power gained and is based on the nominal interest rate and the rate of inflation. Learn how to find the real interest rate in this video. Created by Sal Khan.
An introduction to red shift
An introduction to Refraction and Snell's Law. Created by Sal Khan.
An introduction to Refraction in Water. Created by Sal Khan.
Refraction of Seismic Waves. Created by Sal Khan.
Relation between nominal and real returns and inflation. Created by Sal Khan.
Bond prices and interest rates are inverseley related. Learn about the relationship between bond prices change when interest rates change in this video. Created by Sal Khan.