## Calculating internal energy and work example | Chemistry | Khan Academy

– [Voiceover] In this video we’re gonna do an example problem, where we calculate in internal energy and also calculate pressure volume work. So, we know the external pressure is 1.01 times ten to the 5th pascal, and our system is some balloon, let’s say it’s a balloon of argon gas, and initially our gas

## Potential and Kinetic Energy

Hi. It’s Mr. Andersen and today I’m going to talk about potential and kinetic energy. Remember from the last podcast that energy is the ability to do work. And work is a force times times the distance. So we measure work and energy both in joules. Now there a law of the conservation of energy.

## Point Charges (8 of 10) Work Done Moving a Point Charge thru a Potential Difference: No 1

okay in today's video I am going to over how to calculate the amount of work done when you move a charge through a potential difference alright now this is pretty straightforward all it says here is how much work does it take to move a -5 micro Coulomb charge micro Coulomb charge through a

## Hewitt-Drew-it! PHYSICS 71.Heat and Temperature

after this lesson I hope you'll have a good understanding of two physics concepts that are often confused heat and temperature here's young Francisco with a firework sparkler the sparks are high temperature quite hot but if the sparks hit his face not a problem his John walking barefoot on red-hot coals again high temperature