Recent content by yjl

Hey all, I am working on a problem that goes like this: The cargo space of a refrigerated truck whose inner dimensions are 12 m 3 2.3 m 3 3.5 m is to be precooled from 25°C to an average temperature of 5°C. The construc- tion of the truck is such that a transmission heat gain occurs at a rate...

Yes, I e-mailed him. Wonder if he'll appreciate or find it annoying to be honest

Yes, thank you! That's what I kept ending up on. :-) It's not a book that's publicly available. It's my professor's LaTeX book that he wrote for the course. He did say that it's still very much a work in progress, but still..

Hey all, My book says/does the following. Use the following equation for a plane wave Fill it in the klein-gordon equation To get Which results in Is this right? I got something different and no matter how hard I try I can't replicate the same answer. I've gotten the last equation, but...

Ah. Well, thank you :-). I see now that that was what BvU was hinting at.

The net force due to the pressure difference when dP > 0.

Thank you :-) Nowhere explicitly. But surely there must be a good reason for assuming the top part of the particle to have a greater pressure. Is it not true that the net force in Figure 12-3 would make the particle accelerate towards the x-axis?

Hi all, I have attached an image of a page out of the book I am using for context. The blue arrow in Figure 12-3 describes the motion of the particle. I figured the net force would need to be in the same direction, but apparently the net force opposes the motion. So, in Figure 12-3 the pressure...