RishBonjour
Well-Known Member
- Joined
- Aug 14, 2011
- Messages
- 1,261
- Gender
- Male
- HSC
- 2012
I got 22.something aswell. I subbed in 20, 21, and 22 to check, 22 was correct --> closest to 0.i got 22hrs 46min for d)ii)
I got 22.something aswell. I subbed in 20, 21, and 22 to check, 22 was correct --> closest to 0.i got 22hrs 46min for d)ii)
sameI got 22.something aswell. I subbed in 20, 21, and 22 to check, 22 was correct --> closest to 0.
This. How do you do it?what did you guys get for 13.c.ii
was this the approximation question?This. How do you do it?
13cii ) When is the displacement of the particle zero for the first time?was this the approximation question?
dw man. silly mistakes.. fml. (I got 2 so far)Just checked on wolframalpha and it's 22 something. Ugh.
68/70 raw? ==>99 buddy!RishBonjour same here =\ what external mark do you reckon 68/70 will get?
nice68/70 raw? ==>99 buddy!
How do you actually do it though? I used x = Ancos(nt + alpha) but im guessing that probably wrong. From memory alpha ended up being inverse tan(-4/3) ?I got t=1.511.
I think it was Ancos(nt - alpha) and you should get 1.511.How do you actually do it though? I used x = Ancos(nt + alpha) but im guessing that probably wrong. From memory alpha ended up being inverse tan(-4/3) ?
yeaa i got something like this aswell. but i guess where wrong... according to everyone elsei got 26hours 40mins for 13dii. anyone ?
check it out above, i typed it into wolfram alpha and the answer came to 26.66666.. = 26 hrs 40 minsyeaa i got something like this aswell. but i guess where wrong... according to everyone else
you have to minus 0.3 in the equationcheck it out above, i typed it into wolfram alpha and the answer came to 26.66666.. = 26 hrs 40 mins