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The only problems I have had with the physics and chem electives was the mark allocations. Q29 D (ii) ... 4 marks ?? But in general I agree that Q29 was harder then the rest of the paper.

12. The graph is of % of Oxides remaning, the question is asking which is most effective at removing the oxides. If 10% remaing then 90% have been removed, this is more effiective then the one that removed 40% and left 60% behind. Hence it's D. 13. C - The NH3 is/was used to create...

I got the same except 7, I went for B.

What did ya'll get for ya multiple choice answers ??

397nm of memory.

Neutron scattering is in there. 9.8.5.4: Explain why neutron scattering is used as a probe by referring to the properties of neutrons.

I have the Excel HSC physics text book, it has half a page on neutron scattering. Given that it is 7 marks i suspect it's 3 marks for neutron scattering and 4 marks for the "other process that have been used to increase our understanding of the structure of matter" .... I did atom smashers. I...

Your ment to use orbital radius, the size and mass of the planet has no relavence. It's twice as far away, so Ba is gonna take longer to orbit the star then Alif is - thus A and B are excluded.

Q5. Alif: T = 8.75 x 10^7 r = 4.00 x 10^11 => r^3 / T^2 = k thus, k = 8.359 x 10^18 Ba: T = ? r = 8.00 x 10^11 k = 8.359 x 10^18 using: r^3 / T^2 = k => T = sqr(r^3 / k) thus, T = 2.47 x 10^8

I agree !!!! What did people put for B III ?? The rest was fairly easy but the marking scale is very wierd !!!

What did you get, this is what I got: 1 B 2 A 3 B 4 B 5 D 6 A 7 A 8 C 9 C 10 B 11 A 12 C 13 C 14 B 15 A NB: WHat did you think of the Quanta to quarks question ??

For Q12; If you want to get pedantic .... it could be C aswell, it doesnt say the program finishes when the data is printed: REPEAT Get EmployeeName Get HoursWorked IF HoursWorked < 0 then Print ...... ELSE set AmountOwing =+ HoursWorked END IF UNTIL...

OK, With Q1. when it said processes - I assumed it ment the physical processes to produce the part (milling, turning, casting etc ..), So couldnt a story board be used to show the different processes that are done to the part ?? I highly doubt it's D, it could be C however. With Q10. I think...