Herman Trivilino's latest activity

You're welcome. I don't know what SE means. The part of the book you were reading appears to be a derivation of the Boltzmann...

It means that you take the average. That's what the bracket notation <...> means. So the average value of ##v_x^2## is ##<v_x^2>##. And...

The book you're reading is written for physics majors. Probably at the graduate level, so it's meant for students who've had previous...

Yes, with the qualifications stated below. Not if you have a tremendously large number of molecules, which you do. So the chances of...

Because the x-direction is chosen randomly. It could have been the y-direction that was chosen instead, or indeed any direction.

What I can glean from the translation is that you imagine drawing an arrow representing the velocity vector for each molecule, and then...

Make a picture of the page and put it into Google Lens or similar to translate it. We have the year 2025.

We need more than that. A proper reference gives us the book's title, author, publisher, etc. And the page number.

What source? We need to know. Without context I can only guess, and chances are that would just take you down the wrong rode. Tell us...

Are you talking about the velocities of two different molecules? And those are two molecules in a macroscopic sample of gas? What do you...

If I understand your question, the answer would be any vector not parallel to the y-axis will have a nonzero x-component. Not sure what...

The difference in sample sizes is highly significant. You have Avagadro's Number of molecules, say, in a liter of gas. I can't imagine...

What's not the point? The entire post is a discussion involving thinking about these things now. And getting a right answer before class...

Instead of textbooks, go to the source. Newton's First Law as stated in the Principia: "Every body continues in its state of rest, or...

OK. So you really are interested in what Newton said. But please don't use what he said as anything that contradicts modern statements...