Recent content by Nervous

I'm trying to find a textbook I can download that covers GR and SR and includes practice problems so I can test myself. Naturally, answers would need to be included so I can check my answers.

Does anyone know a good website or other source for practicing conversions and really just units in general? I'm having trouble with them, I'll give you an example problem I did to illustrate my problem... What is the pressure at a depth of 5 meters in alcohol? (The specific gravity of...

OK, thanks for that. I knew I was too dumb to be onto something. :P

Yes, this is what I thought HUP meant. We have to shine a wave onto a particle to measure it. The weaker that wave is, the less it affects the momentum of the particle but the less precise the position can be known. (Since the particle could be any where between two wave crests.) Of course, if...

I thought my weight was canceled out by the force exerted on the floor, but not non-existent.; w= mG & F=mA -> w+F=0 w=-F mG=-(mA) G=-A And since negative acceleration is simply called acceleration... G=AI must have phrased part of my question wrong, but what I'm concerned with is the ultimate...

Newton's third law says that every force X exerts onto Y, Y exerts and equal and opposite force onto X. Ergo, if I'm standing on my linoleum floor, I'm exerting a force equal to my weight (mass x force of gravity) onto the floor and it's exerting an equal and opposite force on to me. However...

So throwing photons at an electron or any other quantum particle doesn't affect it? That explained the complementary attributes that I know of (Just momentum and position.) Since the photon would contact the electron at it's position, but that contact would effect the momentum. Of course that...

It thought that's how it was? How do quantum particles have inherent uncertainty?

I recognize that the many-worlds hypothesis basically "explains" everythin by saying "It just turned out that way." Which isn't much of an explanation at all, but I also thought it was a logical conclusion from the Feynman sum-over-histories. Is there a problem with the sum over histories...

So it's only the beginning of the space-time within the universe.

If the big bang occurs at the first moment of time, then how can there be a multiverse?

What you got for me baby?

Does the Uncertainty Principle apply to the calculation of particles in a past point in time? As in, can we know the momentum and position of a particle in the past?

OK, so I want to do something in physics. And *so far* I'm feeling most interested in Quantum Mechanics, but I know it's best to keep my options open. I'm also a senior in high school, graduating this year. I wanted to know if there are any programs I could do before I get into college. A...

Perfect randomness = Pure randomness Which as stated above, HsUP doesn't imply randomness.