Recent content by wrongusername

Ahh excellent, thanks! Though I do wonder what my textbook was talking about when it says: But if efflux of chloride changes chloride's equilibrium potential a lot because there's not that much of it, then the same must be true for an influx of chloride when potassium is introduced...

I'm learning about a very basic model neuron, in which only potassium and chloride is permeable. Why is it that when the extracellular concentration of potassium is increased, the neuron become depolarized, whereas when extracellular concentration of chloride is reduced, the neural membrane...

So when others compliment you on being smart, how should you reply? Also, I have this thing where if I do bad on a test, I am sad, but if I do well, I am often so proud of it. It's ridiculous, but it keeps happening. :frown:

Aww really? About what? :(

Thanks for the clarification! So in the original scenario, would we then use the relativistic velocity addition formula, like what Doc Al did?

Wow, thanks! It makes more sense now But in the right half of the picture, where Pam sends signals back to earth, is Earth also suddenly seeing Pam's time going really quick (4 signals in 2 years)? If so, why?

This is true, imo, only from the person on Earth's point of view. How much slower time is passing shouldn't be absolute. Speculatively, what if you have another spaceship, traveling at a fraction of the relativistic speed of the first spaceship? If the first spaceship undergoes 10 years of...

units of force * time = units of momentum... interesting, so does momentum get increased by 317% than it would have otherwise?

Actually, wouldn't people back on Earth appear to be experiencing time extremely slowly? As slow as the outside world is perceiving their time to be? Because they can argue that their frame of reference is as valid as yours if you're on earth, and so from their perspective you are the one...

I think I agree with Drakkith here, although I may be wrong. Like in a vacuum, shouldn't the speed of light depend on one over the square root of epsilon and mu? And shouldn't the values for epsilon and mu in a certain medium be independent of whatever speeds you're traveling at? If so, then...

Really? Then are all the physics problems I did where two particles moving at relativistic speeds towards each other collide, and a third particle is formed with the energy E = mc^2 of its mass equal to the kinetic energies of the other two particles, pure fantasy? Interesting, I thought my...

This seems unrelated to what Nano-Passion is asking, but I am wondering how energy ties in with mass. If energy and mass could be converted into each other, then are the two somehow perhaps two sides to the same coin?

Thank you for the reply! Well, V\left(x\right)=\infty for all x not between -a/2 and a/2, though if I plug infinity in for V in the Schrödinger equation, I would get \infty=E\psi? Wouldn't it be two solutions since, like you said, the two solutions would be combined into one general...

I believe it is because the only forces being exerted on the book are by you and the earth. Whatever force the book exerts on anything else is irrelevant; the only relevant forces are the ones acting on the book.

Homework Statement Find the ground state wave function for the 1-D particle in a box if V = 0 between x = -a/2 and x = a/2 and V = \infty Homework Equations I would guess -- Schrödinger's time-independent equation...