In uniform circular motion, angular velocity (𝒘) is a vector quantity and …
In uniform circular motion, angular velocity (𝒘) is a vector quantity and is equal to the angular displacement (Δ𝚹, a vector quantity) divided by the change in time (Δ𝐭). Speed is equal to the arc length traveled (S) divided by the change in time (Δ𝐭), which is also equal to |𝒘|R. And arc length (S) is equal to the absolute value of the angular displacement (|Δ𝚹|) times the radius (R).
The annual percentage rate (APR) that you are charged on a loan …
The annual percentage rate (APR) that you are charged on a loan may not be the amount of interest you actually pay. The amount of interest you effectively pay is greater the more frequently the interest is compounded. In this video, we calculate the effective APR based on compounding the APR daily. Created by Sal Khan.
Interpreting an excerpt of Brutus No. 1, the most well-known of what …
Interpreting an excerpt of Brutus No. 1, the most well-known of what will be eventually called the "Anti-Federalist Papers," which argued against the ratification of the Constitution of 1787.
DNA is composed of two strands of nucleotides held together by hydrogen …
DNA is composed of two strands of nucleotides held together by hydrogen bonding. The strands each run from 5' to 3' and run in antiparallel, or opposite, directions from one another.
Arbitrage is taking advantage in price differences to earn a profit. In …
Arbitrage is taking advantage in price differences to earn a profit. In this video we explore arbitrage opportunities in options markets. Created by Sal Khan.
An introduction to the Articles of Confederation and its weaknesses. Shays' Rebellion …
An introduction to the Articles of Confederation and its weaknesses. Shays' Rebellion was one of the catalysts for the Constitutional Convention of 1787.
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