How do you take the moments of inertia of a flat body? I know howto take it if it's a 3d body. And the 2d case should be really simpe,but I'm too stupid to figure it out. Can you help me? For example.. Say we have a body that's a rectangle of mass m on |x| < a, |y| < b..? Thanks so much.
Thanks arild! Um.. There's just one thing. I'm guessing the letters simelaneously. So there's no feedback on wether my first guess was right. I write down my two guess , and then put it on a table, and he reads it. What are the odds he tells me one of my letters are right. That's the...
This isn't a hwk question, it's just something I've been trying to show my dad. I'm probably wrong. Okay my question is, suppose you pick ONE letter out of the alphabet.
The odds of me picking your letter are 1/26, if I only have one guess. However, if I have two guesses, aren't the odds a...
Homework Statement
Consider the family of hypersurfaces where each member is defined by the constancy of the function S(xc) over that hypersurface and further require that each hypersurface be a null hypersurface in the sense that its normal vector field, na = S|a be a null vector field...
Homework Statement
Consider the family of hypersurfaces where each member is defined by the constancy of the function S(xc) over that hypersurface and further require that each hypersurface be a null hypersurface in the sense that its normal vector field, na = S|a be a null vector field...
I've been wracking my brains trying to answer this but it's just really hard. If some one could help me out I would really appreciate it. Thank you so much in advanced!
Consider the family of hypersurfaces where each member is defined by the constancy of the function S(xc) over that...
Hard General Relativity question, help :(!?
I cannot come up with a solution to the following, can some one please help me? I would greatly apprecieate it! Thank you!
Question 1
The Kretschmann curvature scalar is defined to be K = R_abcdR^abcd where Rabcd is the Riemann tensor. Compute...