**Applied Maths Before/After**

Eurovisionmad

xJEx wrote: »

Thought it was okay! Last bit of ten and five were tricky but I got answers! what did anyone else get for them? Also for some reason i couldnt get the t1 at the end of 1 was annoyed at that!!

y=1.5
v=60
s=34 and I can't remember the answers for the volume on somewhere around 2 hours or so!

xJEx

Eurovisionmad wrote: »

y=1.5
v=60
s=34 and I can't remember the answers for the volume on somewhere around 2 hours or so!

yeah! although i got 36 :P

Monsieur Folie

I actually think I passed! =D

Started with question 10 which I got out no bother, it's the one question I'm good at. I got all of Q4 out as well, and all of Q1 except for the very last bit. I got all of part (a) for projectiles and a little bit of part (b) and I managed to start off Q2 so I think I did enough to pass. Delighted, I was full sure I was going to fail.

NierellaA

Collision is supposed to be my best question, what the actual fck was the b part.

Eurovisionmad

xJEx wrote: »

yeah! although i got 36 :P

I think it was 36, I can't remember, did you relate ds/dt or did you back to the start again and do v dv/ds?

NierellaA

AND WHERE WAS MY WEDGE? *sobs*

xJEx

Eurovisionmad wrote: »

I think it was 36, I can't remember, did you relate ds/dt or did you back to the start again and do v dv/ds?

yeah i said v = ds/dt and subbed in v in terms of t?

xJEx

NierellaA wrote: »

Collision is supposed to be my best question, what the actual fck was the b part.

I dont like collisions but i did that Q haha! Did anyone get 3.75 for the last bit of 5???

xJEx

Monsieur Folie wrote: »

I actually think I passed! =D

Started with question 10 which I got out no bother, it's the one question I'm good at. I got all of Q4 out as well, and all of Q1 except for the very last bit. I got all of part (a) for projectiles and a little bit of part (b) and I managed to start off Q2 so I think I did enough to pass. Delighted, I was full sure I was going to fail.

what did you get for the end of 10?? i got 79.32 mins

Kingkumar

Eurovisionmad wrote: »

I think it was 36, I can't remember, did you relate ds/dt or did you back to the start again and do v dv/ds?

yeah i got 36 too..what did people get for the very last part of Q10.
overall it was a ****ing horrible paper for me ....A1 gone
For Q2(b) was the answer 60 degrees?

xJEx

Undeadfred wrote: »

in Q. 4 did anyone else get T = loads of m1,m2 and m3s?

The first part of the statics question was ridiculous, gave me loads of cosines and sines with numbers like 11400 and 9569 and **** like that in front of it

Part C of Q. 10 was hard

i got 4m1m2m3 / 4m1m2 + m2m3 + m1m3

that first bit is all over all of that

Kingkumar

xJEx wrote: »

what did you get for the end of 10?? i got 79.32 mins

i got something around that but i left my answer in hours 1.3 something so like -2 marks for that

Eurovisionmad

Kingkumar wrote: »

yeah i got 36 too..what did people get for the very last part of Q10.
overall it was a ****ing horrible paper for me ....A1 gone
For Q2(b) was the answer 60 degrees?

Yeah I go 60 degrees south of west (direction is required)

I got 4.44 for 5b

Did anyone do the hydrostatics question, what in god's name was going on there for the second part!

Monsieur Folie

xJEx wrote: »

what did you get for the end of 10?? i got 79.32 mins

That looks familiar, I think that's what I got! I got 36 for the end of C like people have said they got so I'm relieved now. :P

I got something mad for Q4 as well, can't even remember what it was tbh. :P

xJEx

Kingkumar wrote: »

i got something around that but i left my answer in hours 1.3 something so like -2 marks for that

yeah i think thats what it was in hours!! But i'm just after realising my calculator wasnt is radian mode!! That must mean we're wrong?!

Eurovisionmad

Kingkumar wrote: »

i got something around that but i left my answer in hours 1.3 something so like -2 marks for that

I don't see why they'd take marks off for leaving it in hours, it was given in hours anyway!

sganyfx

Kingkumar wrote: »

yeah i got 36 too..what did people get for the very last part of Q10.
overall it was a ****ing horrible paper for me ....A1 gone
For Q2(b) was the answer 60 degrees?

I matched both your answers, hopefully we are right

no scope codgod

Did anyone get 3.33 for the thickness of the paper at the end of Q5?

Kingkumar

xJEx wrote: »

yeah i think thats what it was in hours!! But i'm just after realising my calculator wasnt is radian mode!! That must mean we're wrong?!

hmm how did u relate them ? like what was ur initial equation ?

Undeadfred

no scope codgod wrote: »

Did anyone get 3.33 for the thickness of the paper at the end of Q5?

Yeah i did. Did you get e squard is a minus though? I kept getting that but just said it was an anomoly and carried on without it

xJEx

Kingkumar wrote: »

hmm how did u relate them ? like what was ur initial equation ?

I said liked -dV/dt = kV and i put v=1 when t=0 and then v=1.5 when t = 60 cause i changed to minutes and then i got k

no scope codgod

Undeadfred wrote: »

Yeah i did. Did you get e squard is a minus though? I kept getting that but just said it was an anomoly and carried on without it

If you left it as Velocity rather than Speed you would probably have a minus there, but you wouldn't lose marks since obviously e has to be a real number.

xJEx

Undeadfred wrote: »

Yeah i did. Did you get e squard is a minus though? I kept getting that but just said it was an anomoly and carried on without it

how did yous get that? I got 3.75

Undeadfred

Did anyone else get like 52 degrees for the first part of the statics question?

xJEx

did anyone get 45 degress for max range in 3?
and 5r/3 for length of simple pendulum in 8?

Jackobyte

xJEx wrote: »

what did you get for the end of 10?? i got 79.32 mins

Yeeeessssss!!!! I spent ages trying to get my head around it, and eventually managed to form a differential. Hadn't seen decisions link(wasn't on here last night) but our teacher had given us photocopies of those exact sheets when we were doing differentials in class.

no scope codgod wrote: »

Did anyone get 3.33 for the thickness of the paper at the end of Q5?

I got 1.40625cm I think. Got that the value of e was 2/45 per cm and then solved for e=1/16. Dunno whether that was the right method or not.

no scope codgod

xJEx wrote: »

how did yous get that? I got 3.75

e = kd (d is thickness)
1/3 = k(2.5)
2.5/3 = k
k = 5/6

1/4 = kd
1/4 = 5d/6
6/4 = 5d
6 = 20d
d = 6/20 = 3/10 = 3.33

Is what I did

xJEx

Jackobyte wrote: »

Yeeeessssss!!!! I spent ages trying to get my head around it, and eventually managed to form a differential. Hadn't seen decisions link(wasn't on here last night) but our teacher had given us photocopies of those exact sheets when we were doing differentials in class.


I got 1.40625cm I think. Got that the value of e was 2/45 per cm and then solved for e=1/16. Dunno whether that was the right method or not.

OMG yay! But wait , somebody said last night you have to do 10 in radian mode, did you?? I cant remember what mode my calculator was in!

And i got e = 1/16 for the last bit but then i got an increase in 1.25 cm

Kingkumar

xJEx wrote: »

I said liked -dV/dt = kV and i put v=1 when t=0 and then v=1.5 when t = 60 cause i changed to minutes and then i got k

should it not be K(q-V) where q is the volume of tank when its full as the rate is proportional to how much water is left in the tank?
also i just discovered i made a mistake in my calculations so either i somehow managed to get the right ans or we're both wrong

Jackobyte

xJEx wrote: »

OMG yay! But wait , somebody said last night you have to do 10 in radian mode, did you?? I cant remember what mode my calculator was in!

And i got e = 1/16 for the last bit but then i got an increase in 1.25 cm

My differential didn't require the use of any trigonometry, only logs, so radians didn't matter. I formed a different equation than you though.