Its fine bro , i f***ed up this paper. Just hoping an A is like 50 or something for both papers. I messed up on the question on about moments , and its supposed to be really easy as well :/
It was 2.7, people got 1.7 because they took zero to be the start of the metal scale, when you had to actually calculate from the zero line on the scale (ie like measuring with a ruler and aligning the end of the ruler with the thing you are measuring as opposed to aligning it at the 0 division) I got that first then realised it was wrong
Wouldn't you have to put 3mm because you can't give the answer to a higher degree of accuracy than the error in the reading?
Their was a question with a graph of G against temperature and you had to work out alpha, what did you get and how?
using y=mx+c or y-y1=m(x-x1) you get like 10.56 or something, but on the graph it was obvsiouly 2.2... however, the x axis was broken hence meaning 10.56 was correct. stick with your maths. i didnt, rip me.
(take 2 points, i used like (280,-0.4) and (220,1.9) and use basic slope geometry to figure it out)
using y=mx+c or y-y1=m(x-x1) you get like 10.56 or something, but on the graph it was obvsiouly 2.2... however, the x axis was broken hence meaning 10.56 was correct. stick with your maths. i didnt, rip me.
(take 2 points, i used like (280,-0.4) and (220,1.9) and use basic slope geometry to figure it out)
I got just under 2.2, is that right or nah? cause i got alpha as the y intercept
aqa are so cancer for putting in a V-I characteristic not a I-V... multiple choice at the end-ish? anyone say it acted like a thermistor so answer was C?
aqa are so cancer for putting in a V-I characteristic not a I-V... multiple choice at the end-ish? anyone say it acted like a thermistor so answer was C?