You've lost stuff. If you can't observe it you can't observe it...after that we move into quantum physics. What happens to water inside of an infinitely long pipe of radius R? I dunno, the pipe is infinite. We can make measurements and say "at such and such point the quality will be such and...
Closed and open depend on if you want stuff to go to boundary or not.
I can have a lot of STUFF go on in a closed boundary system, but I can also have a little stuff go on inside a system but a lot of stuff HAPPEN because the boundary isn't closed.
Hey out there in physics land.
Okay So I have this one problem.
It's about some AIR moving toward a wall
A:
mdot is 200 m/s
T is 25 c
P is 100 kpa
There is a stagnation point B...where the velocity goes to zero.
It's adiabatic and reversible.
I am supposed to find Tsub B P subB and the...
i'm really going nuts here. I don't know much about lisp. however, I do know a thing or two about C. Knowing a lot about C and trying to learn lisp is like (to me) trying to learn italian when completely wasted out of your mind whilst taking a trip to italy but speaking fluent english anyway...
alright to expand on this a little bit...
the other night a question was presented:
given that there is a one-fourth chance of getting disease X for one parent...ie if one parent has X then there is a 1/4 chance that any offspring has X...then..what are the conditions that it goes to zero...
what is the deal with this theorem?
does anyone have any attempted proofs?
I am just curious as to what the big deal is with this proof since it seems so (damn) "simple" (recognizable).
the subject is all there is to it. I mean, is randomness a provable property of the integers? can there be such thing as a random integer? to me it seems no IF the "one way function" theorem is disproved. at the same time, what about those wacky isotopes from half lives, ie schrodinger. what's...
yeah, the problem is how it is in the text.
edit:
It took some trial and error but I've got it.
I took the length contraction for 6ly proper as was measured by the folks on the spaceship.
6 ly * \sqrt{1- (.8c)^2 / c^2} = 3.6 ly
after some fridge logic reference frames:
3.6 ly + 6.0 ly = 9.6...
in this book I have by G.L Squires. One of the questions is:
if \phi1 and \phi2 are normalized eigenfunctions corresponding to the same eigenvalue. If:
\int\phi1*\phi2 d\tau = d
where d is real, find normalized linear combinations of \phi1 and
\phi 2 that are orthogonal to a) \phi 1 b)...
I was just curious as to how someone could find a Quantitative answer out of the equations for general relativity. I've tried to mess around with stuff related to tensors and manifolds but yeah, I can only compute so much given my foundation. In an attempt to build and forge that foundation I...
I think the idea is that if things were 'frozen' and there was nothing moving around..what would a reference frame be like in that situation.
the problem I sense is that of "the universe" becoming increasingly unstable as it cooled since there would still be the conservation of all the mass and...