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superspeed49

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    May 2015
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    Italy
  1. Chemistry HL: 7 Physics HL: 7 Physics EE: C Maths HL: 7 English SL: 6 Business SL: 5 French SL: 7 TOK:A Core points: +2 Total: 41/45 Diploma Awarded! Just a question I got C in my EE (and was predicted A for a point) and got 5 in business (3 marks off a 6). If I do I remark is it likely that my EE and Business grades go up?
  2. Chemistry HL: 7 Physics HL: 7 Physics EE: C Maths HL: 7 English SL: 6 Business SL: 5 French SL: 7 TOK:A Core points: +2 Total: 41/45 Diploma Awarded! Just a question I got C in my EE (and was predicted A for a point) and got 5 in business (3 marks off a 6). If I do I remark is it likely that my EE and Business grades go up?
  3. Yep, I got 500K. Silly of them to ask which process was adiabatic after that question! I mean, I think they even stated it in a later question which one was adiabatic... Thanks for that free point. Was there a question that asked which one was adiabatic? Lol I remember having to label the one which was isochoric Ya i labelled the isochoric one...
  4. I did. But what question is that. Strangely enough I got something around 100K (as if the temperature decreased which at the end made sense as the change in internal energy it tells you to calculate came out negative for me). Or i did a tremendous mistake all along. That's question 7. I'm pretty sure you might have made a mistake, although I can't remember the numbers exactly. Didn't the process go from right to left? In an adiabatic change, that's an increase in temperature. For the internal energy, I got 1510 J.. So very positive! Ya strangely enough I assumed it went from left to right
  5. Sorry guys, can't remember. Was q9 the one of momentum and cycle with Pressure- Volume (im hl tz2). Getting quite confused
  6. How did you find question 7? I found Q7 alright, might have messed up a bit when calculating the mass. I used the equation Ek=.5mω^2x^2 to get the mass and got 3.something :/ Hbu? Why 5? I used the same equation, but I got something like 0.27 kg. How did you find question 7? I found Q7 alright, might have messed up a bit when calculating the mass. I used the equation Ek=.5mω^2x^2 to get the mass and got 3.something :/ Hbu? Also, how did you draw the graph for the KE of particle B? 1/2 the amplitude and 1/2 the displcement . YoU? Got half the displacement but a q
  7. How did you find question 7? I found Q7 alright, might have messed up a bit when calculating the mass. I used the equation Ek=.5mω^2x^2 to get the mass and got 3.something :/ Hbu? Why 5? I used the same equation, but I got something like 0.27 kg. How did you find question 7? I found Q7 alright, might have messed up a bit when calculating the mass. I used the equation Ek=.5mω^2x^2 to get the mass and got 3.something :/ Hbu? Also, how did you draw the graph for the KE of particle B? I also got something like this with mass and my graph started at -0.1 and ended at 0
  8. How did you find question 7? I found Q7 alright, might have messed up a bit when calculating the mass. I used the equation Ek=.5mω^2x^2 to get the mass and got 3.something :/ Hbu? Why 5? I used the same equation, but I got something like 0.27 kg. How did you find question 7? I found Q7 alright, might have messed up a bit when calculating the mass. I used the equation Ek=.5mω^2x^2 to get the mass and got 3.something :/ Hbu? Also, how did you draw the graph for the KE of particle B? 1/2 the amplitude and 1/2 the displcement . YoU?
  9. Oh, right... I never would have guessed that.... I and most of my classmates chose Q7 and Q8 too- as they seemed the easiest ones. Really? I just read electrical currents and skipped that one immediately, hehe. Question 6 was pretty decent, more or less straightforward. Seems like we got few "show that" questions overall, which was a shame - love those! I did the question on SHM and that on momentum. Which were those?
  10. How did you find question 7? I found Q7 alright, might have messed up a bit when calculating the mass. I used the equation Ek=.5mω^2x^2 to get the mass and got 3.something :/ Hbu? I used that formula too but i cant remember what i got (3kg you say?)
  11. For question 8, what did your graph for momentum looked like? It started from 15.7 kgms^-1 passed through zero and at the endd of the time it arrived at -15.7 kgms^-1. I did a curve, as the F is changing (hence gradient of the graph was not constant). What did you do?
  12. Oh, right... I never would have guessed that.... I and most of my classmates chose Q7 and Q8 too- as they seemed the easiest ones.
  13. Not entirely sure I managed to solve the emf question completely, if that's the one you mean. What I did is I used emf = Blv. B was given and the length was the sum of three of the sides (since it had not entered fully, so the last one wasn't in the field as of yet). Since the thing was dropped, the velocity could be found from doing a bit of mechanics, with s = length of one end, u = 0 and a = gravity. Then you can use v^2 = u^2 + 2as to find the velocity. What didyou answer for part b (the one of the coil taking more time to enter)?
  14. There are 16 combinations: the numbers range from 0000 to 1111 (which is from 0 to 16). So yes, 16 is right. 0000, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111 ...
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