Physics

The Physics Philes, lesson 129: Return of Heat Capacities!

For the past few episodes of The Physics Philes, we’ve been trying to understand the kinetic-molecular model of idea gases. Now we need to rewind a little big and go back thinking about heat capacities. Remember way back in the day we talked about molar heat capacities, or a quantity …

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Physics

The Physics Philes, lesson 128: Kinetic-Molecular Model of Ideal Gases, Part 3

We’ve just got a couple more topics to talk about before we can move on from the kinetic-molecular model of ideal gases. So let’s get going! First, let’s talk a little more about molecular speeds. Just to jog your memory, last week we determined the average translational kinetic energy of …

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Physics

The Physics Philes, lesson 127: Kinetic-Molecular Model of Ideal Gases, Part 2

It’s been a couple of weeks, but now it’s time to continue our discussion of the kinetic-molecular model of ideal gases. Let’s have a little discussion on pressure and the kinetic energies of molecules. Let’s think about the absolute value of the velocity in the x-direction from last time. That …

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