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Hmm according to this I got 15/15.... All depends on what the answer to 5 is. I am not fully convinced by 5 being B I think there is cause to argue both ways. perhaps its gonna be one of those where two answers are accepted. I can only apply logic to this case, but with special...

well the reduced intensity would relate to a shorter spark gap. But yeah. If you ask me its a stupid question, but i dont think the fact that hertz had nothing to do with the photoelectric effect has nothing to do with it. It just asks which observations are consistant with the photoelectric...

Ok, so here are the answers as everyone has so far agreed upon (including 14, i take Takuya's "oh shit" as a conceede of defeat on question 14)... 1 - B 2 - A 3 - B 4 - A 5 - B or D (lets argue this one out some more) 6 - B 7 - D 8 - C 9 - C 10 - A 11 - B 12 - D 13 - D 14 - D...

14 is now witrhout a doubt D After reading the jacaranda textbook and some of the points raised here, 14 cannot be B Firstly, the word "observation" means that A and B are excluded from being correct by the mere nature of the question. And quoting from the jacaranda textbook page 213...

Yes I agree with you. I put the exact same as you so lets hope we get 15/15! YAY!

Ok, based on these results that people have put up, there are only three query questions: 5, 9 and 14 Can anyone get an official word (i.e. ask teacher or someone) to confirm these questions?) I am pretty sure 5 is D and I am pretty sure that 9 cannot be B or D howevor could be C or A...

V^2 = U^2 + 2 x A x S 0 = 81 + 22A 22A = -81 A = -3.68 = 3.7 ms-2 = (B)

Well maxwell devised the concept of their being an electromagnetic wave that would not require a medium for propagation, and the michelson morely experiment showed that the aether did not exist for the propagation of light which was then later shown to be an EM wave by hertz. Perhaps it may...

i think that some textbooks go overboard and it can be an information overload from the perspective that at the end of the year we have to do a 3 hour test, but like I think the aim of the course is to actually learn about physics and i guess you could get through just knowing the bare minimum...

Lol! this point has been fucking with me for a few days! I figured it out though. Heres my answer: "Fermi hypothesized that it should be possible to split the atom into two atoms of roughly equal size. In aiming to experimentally show this, he bombarded a range of elements. When he got to...

besides the blatently obvious questions which require no more than direct substitution into forumula, the only real tricks come when you have to find out the value for one variable using another equation in order to use one particular value. Umm for example when you might have to find time by...

just a thought, but could it be that the extra mass comes from the neutrons that have spurred the fission? Because your right, the mass of the reactants will be more than the mass of the products. I will do a worked example from the jacaranda book:

the two competing theories were that an aether would exist which would allow for the propagation of EM waves, and maxwells theory which stated that they didn't need a medium for propagation such as the aether... the michelson morely experiment confirmed that the aether did not exist. (it...

identify einsteins contribution to black body radiation this point always seems to screw with my head. See the thing is that all the books deal with his contribution to the photoelectric effect, but that is separate from black body radiation. The four main points: 1 - all or none...

precisely! No more 4 unit ever!

I just want to say I cant wait for the test tommorow... All areas have been covered and im feeling good... Just hope that I dont fuck the 3unit paper up.

This syllabus point i always have difficulting understanding cos there always seems to be a lack of information in textbooks etc.. Anyone able to help me with: perform an investigation and gather first hand information to observe the occurance of different striation patterns for different...

Thank you everyone!

yeah see thats kinda all I got, but i dunno it just seems to obvious.

this is in reference to the syllabus point: discuss the implications of mass increase, time dilation, and length contraction to space travel. Now time dilation is easy, but how about length and mass? A simple response to mass might be that mass increases needing more fuel, but this...