## Screencast 2.3.4: Combining the Product and Quotient Rules

Hi there and welcome to the screen cast where we’re going to do an example of computing a derivative where several rules are being combined at once. In particular both the product rule and the quotient rule are gonna show up here. And it’s gonna be our job to decide what rule to apply when. […]

## Related rates – Snowball melts, surface area decreases at given rate (Matheno.com)

Let’s solve together this typical related rates problem about a snowball: “A snowball melts symmetrically such that it is always a sphere. Its surface area decreases at the rate of pi inches-squared per minute. How fast is its radius changing at the instant when r equals 2 inches?” To solve this problem we’re going to […]

## Ex: Related Rates – Volume of a Melting Snowball

– A SPHERICAL SNOWBALL IS MELTING IN SUCH A WAY THAT ITS DIAMETER IS DECREASING AT A RATE OF 0.3 CENTIMETERS PER MINUTE, AT WHAT RATE IS THE VOLUME OF THE SNOWBALL DECREASING WHEN THE DIAMETER IS 9 CENTIMETERS? THE FIRST THING WE NEED TO REMEMBER IS THE VOLUME FORMULA FOR A SPHERE IS V=4/3 […]

## The Map of Physics

So physics is a huge subject that covers many different topics going from galaxies in the depths of space right down to subatomic particles. And if you don’t already know physics its difficult sometimes to see how all these different subjects are related to each other. So this is my attempt to show that in […]

## Review of all Electricity and Magnetism Dimensions – AP Physics C

Bo: Hey guys. Billy: Hey Bo. Bobby: Hi Bo. ♫ (lyrics) Flipping Physics ♫ Mr. P.: Ladies and gentle people, the bell has rung, therefore class has begun. Therefore you should be seated in your seat and ready to review electricity and magnetism dimensions, because dimensions are your? Billy, Bobby, Bo: Friends. Mr. P.: That’s […]

## (1 of 2) Electricity and Magnetism – Review of All Topics – AP Physics C

Bo: Hey, guys! Billy: Hey, Bo! Bobby: Hi, Bo! ♫ (lyrics) Flipping Physics ♫ Mr. P: Ladies and gentlepeople, the bell has rung, therefore class has begun. Therefore, you should be seated in your seat, ready and excited to review everything we learned in electricity and magnetism in AP Physics C. Here we go, are […]