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## Sammie's Content

There have been 35 items by Sammie (Search limited from 09-August 21)

### #101458 What's On Your Mind

Posted by Sammie on 11 June 2008 - 11:04 AM in General Chat

### #101408 Higher Physics 2008

Posted by Sammie on 26 May 2008 - 08:33 PM in Physics

I also did the same thing for the irradiance Q got half way though the paper, looked at the irradience Q later on and it had the unit down as Wm^-3 went "OMG THATS THE ANSWER!" went back and changed the multiple choice answer. Haha. I love when that happens.

### #101385 Higher Physics 2008

Posted by Sammie on 24 May 2008 - 07:46 PM in Physics

I'm praying for my B I think I did it, and I was just so happy there were alot of theory questions in it.

Most of the stuff I thought that was going to come up didn't but what the hell was that op amp questions about!

### #101384 Favourite Albums?

Posted by Sammie on 24 May 2008 - 07:44 PM in General Chat

Liberation Transmission - Lostprophets

Evening Out With Your Girlfriend - Fall Out Boy

Infinity on High - Fall Out Boy

Left - Hope Of The States

Elliot Minor - Elliot Minor

### #101054 pastpaper 2005 non calc 10b

Posted by Sammie on 03 May 2008 - 02:06 PM in Problem Questions

10a) express sin x = - root3 cosx in the form ksin(x-a) where k>0 and 0<=a>=2pie

I got::

sinx - root3 cosx = ksin(x-a)

hence

ksin(x-a) = k (sinxcosa - cosxsina) = ksinxcosa - kcosxsina = kcosasinx - ksinacosx

kcosa = 1 and ksina = root3

so

k = root (3 +1)

k = root 4

k = 2

tana = ksina/kcosa = root3/1 = root3

a = tan-1 (root3) = pie/3

since k = 2 and a = pie/3

sinx - root3cosx = 2sin(x-pie/3)

==> I'm pretty much 100% sure this part is right...

b) sketch y = 3+sinx - root3cosx

from part a

y = 3 + 2sin(x-pie/3)

and it all went sunnyside down from there...I'm pretty much hitting a brick wall with this thing I've had a look at the SQA answers but I have no idea where there getting the numbers from etc

thanks peepsies xo

### #101053 What's On Your Mind

Posted by Sammie on 03 May 2008 - 01:13 PM in General Chat

### #101052 How's everyones prelims going?

Posted by Sammie on 03 May 2008 - 01:12 PM in Mathematics

### #101051 Past paper 2005 noncalc Q9

Posted by Sammie on 03 May 2008 - 01:03 PM in Problem Questions

"if cos 2x = 7/25 and 0<x<2pie find exact values of cosx and sinx"

I have this so far.

cos 2x= 7/25

since cos2x = 2cos^2x-1 then

2cos^2 x-1 = 7/25

2cos^2 x = 7/25 + 1 = 32/25

cos^2 x = 32/50

its going from there to the last step,how do I get rid of the square on the left hand side the SQa marking says cos x = 4/5 and sin x = 3/5 but I can't get it to come out right

thanks peepsies <3

### #100805 How's everyones prelims going?

Posted by Sammie on 24 February 2008 - 02:52 PM in Mathematics

### #100788 a mistake - i am confused

Posted by Sammie on 17 February 2008 - 09:11 PM in Mathematics

### #100786 Gigs: who and when?

Posted by Sammie on 17 February 2008 - 12:55 PM in General Chat

I was meant to be going to see the Dykeenies at the end of the month, but their PR messed up with review tickets and she has none left now. Sob!

They weren't that good opening for McFly (I was at the Glasgow gig) but I saw them openiong for Fall Out Boy in August and in King Tuts and they were so much better with a small crowd.

### #100781 Gigs: who and when?

Posted by Sammie on 15 February 2008 - 10:46 PM in General Chat

### #100776 UCAS Offers

Posted by Sammie on 14 February 2008 - 10:51 AM in After School

### #100775 What's On Your Mind

Posted by Sammie on 14 February 2008 - 10:46 AM in General Chat

### #100772 UCAS Offers

Posted by Sammie on 13 February 2008 - 10:26 PM in After School

### #100771 What's On Your Mind

Posted by Sammie on 13 February 2008 - 10:21 PM in General Chat

### #100768 What's On Your Mind

Posted by Sammie on 13 February 2008 - 10:13 PM in General Chat

### #100767 Gigs: who and when?

Posted by Sammie on 13 February 2008 - 10:12 PM in General Chat

March 25th: An Cafe London.

April 2nd: HeyChris Glasgow

April 3rd: HeyChris Edinburgh

April 7th: Elliot Minor Glasgow

April 11th: HeyChris London

April 12th: Elliot Minor London

### #100764 UCAS Offers

Posted by Sammie on 13 February 2008 - 07:49 PM in After School

3 Conditonals for Edinburgh Uni; Pharmacology, Biochem and Bioscience - ABB

2 Conditonals for Strathclyde; Biochem, Forensic Bio. BBBB

Firm acceptance; Biochem at Edinburgh

Insurance; Bioscience at Edinburgh

### #100751 Past Paper Help <3

Posted by Sammie on 10 February 2008 - 01:27 PM in Mathematics

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