Khan Academy: Changing the Pv Loop: Stroke Work in Pv Loops and Boxes

Melting ice seems pretty easy, right? But what's actually happening is much more complex! Introduce the class to enthalpy calculations using a video tutorial. The narrator explains and performs the calculations that show the energy at...

Find out how to use the PV loop to draw the Ea (Arterial Elastance) line, and what it represents. Rishi is a pediatric infectious disease physician and works at Khan Academy. [11:21]

Understand how EA is affected by changes in preload, and in turn, how the PV loop can shift. Rishi is a pediatric infectious disease physician and works at Khan Academy.

First, learn the difference between arterial elastance (EA) and afterload. Then, understand how EA is affected by changes in afterload, and in turn, how the PV loop can shift. Rishi is a pediatric infectious disease physician and works...

Contractility tells us how many myosin heads are working at the end of systole; a number that goes up or down with the level of sympathetic nerve stimulation. Rishi is a pediatric infectious disease physician and works at Khan Academy....

In this colorful animation, our current problem with climate change is likened to a block-stacking game of Tetris. Greenhouse gases are increasing in the atmosphere at an increasing rate. Can we place them properly before it's too late?...

Sal Khan solves two problems centering on finding the change in centripetal acceleration from the change in linear speed, and an example of finding the change in centripetal acceleration from the change in radius. [4:56]

Build a strong foundation for your teaching of stability and change! The video addresses the Next Generation Science Standards Cross-Cutting Concept through insightful examples. The narrator includes ideas for introducing the standard in...

Find out exactly how your autonomic nervous system has a chronotropic effect (i.e. timing) that changes the speed of your heartbeat! Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:02]

Find out exactly how your autonomic nervous system has a chronotropic effect (i.e. timing) that changes the delay between the contraction of the atria and the ventricles! Rishi is a pediatric infectious disease physician and works at...