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LOL! double typo!.. you had why IS the answer B, at first And now its why ISNT the answer B.. haha that makes more sense! Well okay on Q, what are the forces acting? Theres centripetal AND gravity. Since g is constant... the force downards is constant. However, centripetal force is also a...

I agree, the postive end is X, but if the answer is B, then Shazzam's right. Physics most of the time comes down to eliminations and lines of best fits rather than a correct answer. wait, so why the hell is the answer B??

Yes you can tell whether you're in an inertial frame or not, just not whether you're moving at constant velocity or at rest. Use the plumb bob experiment (the accelerometer).. umm.. what's specifically a length contraction experiment? Don't they all involve some degree of relativistic...

ahahahh.. Damn.. So confusing.. Slip and Split...

Nickel? Isn't that the Davisson Germer one, where they shot electrons at annealed nickel alloy to observe diffraction. Bragg's one is the one where they shoot X-rays at a crystal using Von Laue's reflecty method. It's like.. imagine a crystal has layers, and each layer has a couple of atoms...

The answer said, since the intensity stays the same, there is no effect on the current. But then it says, since the energy is greater, there is less current. So it's distribution of energy somehow.. yep...

Ah yes this one.. took me about a year to realise what was going on. Now theres two ways to find this thing.. one is with Lenz's law and the other is a test point. Test charge - on KL by using the right hand palm rule. First, you have to use Lenz's law. The motion of that side is upwards...

Okay so lemme get this straight: Galilean Relativity - The laws of mechanics are same for both an observer moving at uniform velocity or at rest. - No inertial frame of reference of reference is prefered over the other. Newtonian Relativity - No mechanical experiment performed wholly...

mm.. no the book is right. no wait.. im lost. Okay so we know that, intensity doesn't change, so then the photocurrent cant change. But it does.. WHY??? I think it's because since the energy of each electron is higher, by some obscure 11th law of thermodynamics, the thermal distribution has...

You could print it on a4 paper at home on your inkjet and connect everything up with duct tape. That beats spending $500. Hey you know what? the art gallery should have a computer screen or projector that projects quality images of the comp... so you can view digital art in all its high...

QUANTA!! contrary to popular belief, astro is in fact harder ( the tests ussually are, perhaps not the course) And well, Quanta is like, one of the more important physicsy type things... mabye if you like chemistry you'd like Q2Q even more. But actaully, the choice comes down to you.. Astro...

Ionisation energy is the energy required to remove an electron from the atom. Since Hydrogen only has a proton and an electron, its bassically the binding energy. Im not quite sure what Xayma means, this is how i think it should be done: using rydberg's formula, find the energy of an...

Dont worry, stairway is a pretty simple song once you've heard it countless times.. break it up into segments that just repeat. and just keep practicing. I think the hardest to sing ive ever come across is stuff by Metallica, like really, how does Hetfield play those metal riffs while singing...

I just did the CSSA 2003. Worst test ever. okay mabye not ever.. But the first question: An observer on earth observed an Alien spacecraft fly by. The observer photographed it and made measurements, finding the length to be 24m and the height to be 10m. NASA tracked it and found it...

Well.. i find oils the easiest to work with because they're so flexible. Unlike acrylics.. But thats just me. Many people find oils so daunting only because of all these negative factors like using turps, how hard it is to wash off, taking like years to dry (technically), and yes, it can be...

Stats from 2003 students (2004 artexpress): 1,142 works examined nominated for ARTEXPRESS. Metropolitan exhibitions include the David Jones department store windows in Sydney, Art Gallery of New South Wales, the College of Fine Arts, UNSW, the National Art School, Darlinghurst and...

lol. that's why my comp is running win98 and no peripherals except mouse, keyboard and printer. It's more stable than most windows systems...

Comparing AC and DC is the usual type of question: AC - GOOD - Easily and efficiently transformed due to alternating nature - efficient power transmission due to transformation - AC generators are easier to maintain and more reliable due to fewer parts - easy to utilise in household...

Oohhh yours was the one with the crazy little kid brother trapped in the resin thing!!! omg that would so get in... or else the spirit of the poor child would haunt the curator for the rest of his/her life... Well here are the final photos of my one before it got sent off. Full Set on...

ahha... I posted in that thread, but it just made it more and more confusing to me. But okay thanks everyone! I kinda get it now.. ..basically it's just the imaginary particle that i will take for granted and say that it somehow mediates a superfluid link between the two electrons, through...