Search results

In x-ray crystallography, the particle properties allows it to be deflected by the atoms in the crystal structure. However, the wave properties also allow interference to happen between photons/electrons reflected by different layers in the crystal lattice. I believe this may be part of what...

Hmm... looks done, crash. You didn't need me. :p

Yes, you should be able to do that once you state t's definition: t = tan (x/2) cos x=... (any of the t ratios)

I've got friend who'll start yapping the moment anything comes out so I don't have to check. :p Look at it this way, they should put it up before semsester starts, and I'm not in a hurry to know. :D Hopefuly I'll be far away from any computer access when they do (which is next week).

(I believe) The problem with the question here, CM, was the double definition of the x,y-axis... you have to show that the max range is U^2/g first, but the coordinates you use for the missile's trajectory isn't what they were asking for in the second part. To follow the question, P(x,y) must...

Definitely... :) Only now you have to give more of your time to ext. 2. You should double check that you understand as much as possible of the topics they'll test on, and work on your mistakes. It would be good if you know how to quickly prove to yourself the formulas you memorise, in case...

Okay, on the left side of x=3, the graph y=f(x) does goes upwards to infinity, since the gradient is very large and positive. Look at the right side of x=3. The gradient is still a very large positive number. This means the graph y=f(x) is coming up from negative infinity. Compare this...

Well, yeah, you can easily arrive at the same solution using different (and correct) methods. The dot on the origin is definitely the correct answer.

mmm... yes, just the dot on the origin. An alternate, mathematical method: let z= x+iy Re(z) = iz => Re(x+iy) = i(x+iy) => x (+0i) = -y + ix You obtain two conditions: the imaginary parts are equal and the real parts are equal. => x = -y, 0i = xi. => x=0, y = 0

̃|XgUnicodeB@イEق̌clashƂB ԓǂ߂邯ǃLN^fXfB Shift-JIS@ɂ‚āA*Ȃ̃|XgB@łAl̂͂B

(b) So it is, the final angle is 30&deg; to the vertical... tan 60&deg; = -y'/x' = (10t - 30sin@) / 30cos@ 10t = 30 sqrt(3) cos@ + 30 sin@ t = 3sqrt(3)cos@ + 3sin@ ...tick. Ah, tan30 = (y)/(x) = (30tsin@ - 5t²) / (30tcos@) <- this line. = tan@ - t / (6cos@) sub => =...

Ooh.... it doesn't really matter what a diffraction grating is built out of, as longs as it is opaque. A diffraction grating itself contains many thin pieces of opaque material (say plastic or thin wires) placed next to each other to form slits. It's the gaps between each slit and the width...

Of course. None of these are actually paradoxes, if you consider them carefully. The earth twin is in one frame, but the spaceship twin must change frames to return to earth since he/she started travelling away at ~< c and finished travelling towards the other at ~<c. The effect is fully...

新しいスレッドを’開ける’のがいいと思います。　なけど、僕は新しいユゥザじゃない... atarashii sureddo o 'akeru' noga ii to omoimasu. 　Dakedo, boku wa atarashii yuuza jyanai... My IME isn't working well on my own screen.. :P

Hmmm... done the MP one.

1 way to do it: Starting from the equations of motion: Assume this nozzle is angled at &Theta;, y=U sin&Theta;t - 0.5gt² x=U cos&Theta;t The minimum conditions required for the water to reach the wall is for the stream to hit its exact foot. Or, the water could hit it above...

Yep. in higher temperatures, the molecules move around faster (because they have more energy). Since reactions can only take place when the molecules of reactants come together, faster molecules will bump into each other more and increase the rate of reaction. In exothermic process like...

Deleted Post - Links no longer worked. Pwnage101 29/01/2010

Yes you should learn it. Included in the thought experiments.

Most likely number theory and hamiltonian dynamics. ;) Both advanced.