Eid Jazairi Posted May 12, 2015 Report Share Posted May 12, 2015 How was it? Which options did you guys choose and how did you do? Personally I got option B and E.. Astrophysics was a walk in the park besides the binary star question, option B on the other hand had me doubting myself the entire way, calculations just didn't seem right.. But then again there are so many numbers its so easy to mistype a small digit into the calculator that makes the whole thing wrong Anyways! Share how you guys did! Reply Link to post Share on other sites More sharing options...
Ricardo Posted May 12, 2015 Report Share Posted May 12, 2015 I am HL, did astrophysics and relativity. Pretty decent, overall I'm happy with Physics this year, seemed pretty easy compared to past years. Hoping to get a 6 Reply Link to post Share on other sites More sharing options...
irossi Posted May 12, 2015 Report Share Posted May 12, 2015 I am HL as well and i did EM waves and particle physics, overall i think i did ok but there were a few questions that i didn't understand! Reply Link to post Share on other sites More sharing options...
brianb97 Posted May 12, 2015 Report Share Posted May 12, 2015 I'm HL too and I did option E (Astrophysics) and option I (Medical Physics). I option I (best out of any practice test I took from the past couple years; it had everything I liked!). Felt just okay on option E (didn't study it too much/at all...). Reply Link to post Share on other sites More sharing options...
Guest Posted May 13, 2015 Report Share Posted May 13, 2015 Sl. I did A and B, I got maybe half the questions right. Physics really screwed me over, i'm lucky if i get a 3. Reply Link to post Share on other sites More sharing options...
RandomIBStudent Posted May 13, 2015 Report Share Posted May 13, 2015 I did the same options as you, author ! Option B and Option E, Standard level. I have the exact same impression about the exam as you it seems...Questions in Option B were weird and rather annoying. Option E was okay I guess. Calculations easy, the only hard part I would say was the binary stars maybe. 1 Reply Link to post Share on other sites More sharing options...
Sylvette Posted May 13, 2015 Report Share Posted May 13, 2015 I did options E and F, Astrophysics and Communications respectfully. Astro was ok, the questions were straightforward enough, but not overly easy. Communications on the other hand....well, I'm not so sure what that was Reply Link to post Share on other sites More sharing options...
ALithuanian Posted May 13, 2015 Report Share Posted May 13, 2015 HL here. I did Relativity + Communications. Both options were surprisingly easy, just like paper2. Expecting a 7 here (I hope I don't jinx it though ). Reply Link to post Share on other sites More sharing options...
kallum Posted May 16, 2015 Report Share Posted May 16, 2015 HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well Reply Link to post Share on other sites More sharing options...
Vioh Posted May 17, 2015 Report Share Posted May 17, 2015 HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well Wow really? did the paper ask you to explain why there is more matter than anti-matter in the universe? If that is the case, then the IB is really unfair; because physicists aren't even sure why. There are several valid hypotheses of course, but there isn't a consensus among physicists about why it is so. Reply Link to post Share on other sites More sharing options...
Sofia. Posted May 17, 2015 Report Share Posted May 17, 2015 HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well Wow really? did the paper ask you to explain why there is more matter than anti-matter in the universe? If that is the case, then the IB is really unfair; because physicists aren't even sure why. There are several valid hypotheses of course, but there isn't a consensus among physicists about why it is so. Yeah, but it is a classic "just learn the syllabus" question. Probably not even correct anymore - but you just have to state that particle-antiparticle production is only possible at a high temperature (actually calculated in part (a)), but annihilation is possible at any temperature. Since there was initially slightly more matter in the universe than antimatter, matter "won". I'm guessing it's the last part - why there actually was more matter from the beginning - that physicist are debating? That, we didn't have to explain. Reply Link to post Share on other sites More sharing options...
kallum Posted May 17, 2015 Report Share Posted May 17, 2015 HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well Wow really? did the paper ask you to explain why there is more matter than anti-matter in the universe? If that is the case, then the IB is really unfair; because physicists aren't even sure why. There are several valid hypotheses of course, but there isn't a consensus among physicists about why it is so. Yeah, but it is a classic "just learn the syllabus" question. Probably not even correct anymore - but you just have to state that particle-antiparticle production is only possible at a high temperature (actually calculated in part (a)), but annihilation is possible at any temperature. Since there was initially slightly more matter in the universe than antimatter, matter "won". I'm guessing it's the last part - why there actually was more matter from the beginning - that physicist are debating? That, we didn't have to explain. I'm pretty much wrote this, i just didn't write about the photon collisions that could occur at high temperatures which i believe will be one of the marking points for the 3 marks Reply Link to post Share on other sites More sharing options...
Megamind Posted May 17, 2015 Report Share Posted May 17, 2015 For Astrophysics (Option E) Does anyone remember the graph they drew for the eclipsing binary star's variation of apparent brightness with time? If so, please describe what the shape was like. For Relativity (Option H), The last part of the last question (frequency change from the rocket's acceleration or something) did you simply use the formula to calculate the frequency change and write it down as the final answer? Reply Link to post Share on other sites More sharing options...
Sofia. Posted May 17, 2015 Report Share Posted May 17, 2015 (edited) For Astrophysics (Option E) Does anyone remember the graph they drew for the eclipsing binary star's variation of apparent brightness with time? If so, please describe what the shape was like. For Relativity (Option H), The last part of the last question (frequency change from the rocket's acceleration or something) did you simply use the formula to calculate the frequency change and write it down as the final answer? eclipsing1.jpg Not sure you can actually see that picture, but I think the link is embedded at least. I drew the one to the left. Edited May 17, 2015 by Sofia. 2 Reply Link to post Share on other sites More sharing options...
Alex Jordan Posted May 17, 2015 Report Share Posted May 17, 2015 HL here. I did Option E (Astrophysics) and H (Relativity). Option E was very straightforward - I enjoyed the questions and was able to answer them fairly thoroughly.And then Option H WRECKED me. Hoping for at least a 5 overall :L Reply Link to post Share on other sites More sharing options...
mechnight Posted May 17, 2015 Report Share Posted May 17, 2015 HL as well, EM waves and Relativity. Both were quite easy for me, only the simultaneity question in Relativity got me thinking a bit, but I actually enjoyed the challenge. Reply Link to post Share on other sites More sharing options...
sam1996 Posted May 17, 2015 Report Share Posted May 17, 2015 HL here. I did Option E (Astrophysics) and H (Relativity). Option E was very straightforward - I enjoyed the questions and was able to answer them fairly thoroughly.And then Option H WRECKED me. Hoping for at least a 5 overall :LAre you TZ1? Because I'm TZ2 and found relativity more straightforward than astro.. Reply Link to post Share on other sites More sharing options...
Alex Jordan Posted May 17, 2015 Report Share Posted May 17, 2015 HL here. I did Option E (Astrophysics) and H (Relativity). Option E was very straightforward - I enjoyed the questions and was able to answer them fairly thoroughly.And then Option H WRECKED me. Hoping for at least a 5 overall :LAre you TZ1? Because I'm TZ2 and found relativity more straightforward than astro.. Yes I am TZ1. I forgot to mention it I should have studied more for relativity but astro interests me more Reply Link to post Share on other sites More sharing options...
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