Recent content by Adrian F

Yes, that was one of the boundary conditions: the cylinder was insultated on its lateral surface. And, because the digit in my ID number was 0, which corresponded to HT coefficient of the top face, the top face was also insulated, so the cylinder was completely insulated except for the bottom...

Q = kA(T1-T2), right? Edit: no, nevermind. That's not a DE. I don't remember! Since you say this is a 1D transient heat transfer problem, I take it that my initial assumption was correct. Am I right?

Hi, there. I remember when I was in the University (mech. engineering), I had an exam on partial differential equations about heat transfer in a cylinder. We had to determine the temperature distribution. I remember the conditions were that the cylinder was insulated in the side area, had a...

Yes. That'd be 10/3000000 or 3,33 x 10-6 m/s2. I highly doubt anyone would be able to feel a compression (or tension) effect due to tidal forces of that magnitud. By the way, one of my questions remains unanswered, is the equivalence of free fall and inertial motion true for any gravitational...

Alright. If I got it right, the acceleration of gravity at the top of my head would be 9.9999994 m/s2 using those values. That's a 0.000006 m/s2 difference. I guess that if you don't feel that difference in the surface, it's even less likely that you would feel it near the center or at any other...

No, I'm asking if the person would feel anything different from floating freely inside cabin, as if the cabin were in free space. The cabin is just a mean to isolate the person from external visual references. I don't think the person (I'll asume is a he) would bounce at the ends, as both he...

Hi, folks. There's a somewhat popular hypothetical situation that involves a person falling into a hole dugg all the way through the Earth or any planet, passing straight to its center. Now, I understand quite well that the resulting motion would be periodical and the reasoning behind it. My...