Physics Unit 6 A2 Level

[aligatorviper]

i aint gonna use that metre rule........we paid for it and yeah for a non-defective one.....dint pay for a 1mm error

haha..ur choice.

 

[Manasa]

then u usually use the least count or precision of the instrument u r using.
e.g a meter rule has precision of 1mm which will be the uncertainty in the measurement made with it.
im doing ial.

okay .. hey can you PLEASE explain to me june 2013 unit 6 paper question #1 part bi why to multiply by pi/4?! also part bii i dont get why thry did x2 !! ?? and part d !! how the hell shud i know that i need to do %diff? and then total %U??
i dont get anything here!!

 

[Hadi Murtaza]

okay .. hey can you PLEASE explain to me june 2013 unit 6 paper question #1 part bi why to multiply by pi/4?! also part bii i dont get why thry did x2 !! ?? and part d !! how the hell shud i know that i need to do %diff? and then total %U??
i dont get anything here!!

b) i) Volume of a cylinder = πr²h
d = r/2
V = π(d/2)² * h
V = πd²h/4

 

[Hadi Murtaza]

b) i) Volume of a cylinder = πr²h
d = r/2
V = π(d/2)² * h
V = πd²h/4

Hence u substitute 'd' in da equation

 

[Manasa]

o

Hence u substitute 'd' in da equation

kay gotcha!

 

[Hadi Murtaza]

o

kay gotcha!

aur kuch ?

 

[Manasa]

aur kuch ?

ha !! bii or d

 

[Hadi Murtaza]

ha !! bii or d

b) ii) Thickness is 1.82 ±0.02 so % uncertainty of thickness = (0.02/1.82)*100 = 1.1%
Diametre is correct to da nearest 0.1 mm, n from da formula, diametre is squared so it will b (2*0.1)/(25.9) * 100 = 0.77%
Now add both %s to get 1.87 aproxx. 1.9%

 

[Manasa]

b) ii) Thickness is 1.82 ±0.02 so % uncertainty of thickness = (0.02/1.82)*100 = 1.1%
Diametre is correct to da nearest 0.1 mm, n from da formula, diametre is squared so it will b (2*0.1)/(25.9) * 100 = 0.77%
Now add both %s to get 1.87 aproxx. 1.9%

gotcha! part d

 

[Hadi Murtaza]

gotcha! part d

xD !

 

[Manasa]

xD !

ave samja na

 

[Hadi Murtaza]

ave samja na

ye waala to itna asaan he

 

[Hadi Murtaza]

ave samja na

terko actual value density ki di hui he aur tu ne check krna h k ye % uncertainty ki wajah se different he ya material hi different he.
So (7380 - 6900)/6900 * 100 = 6.96% >> 1.9% iska mtlb k material different he

 

[Manasa]

terko actual value density ki di hui he aur tu ne check krna h k ye % uncertainty ki wajah se different he ya material hi different he.
So (7380 - 6900)/6900 * 100 = 6.96% >> 1.9% iska mtlb k material different he

genius!

 

[Hadi Murtaza]

genius!

Less than u !!!

 

[Manasa]

Less than u !!!

equally!!

 

[Hadi Murtaza]

equally!!

No

 

[aligatorviper]

guys can anyone plz give me a link for AS hodder physics book and physics unit 4 and 5 guidebook from hodder education....plz i need them urgently.

 

[Mufaddal]

http://www.scribd.com/doc/57100493/...s-on-Experimental-Work-Edexcel-New-Spec-as-A2

 

[Muscle NerD™]

Thanks yo! Do you have notes for unit 6 chemistry? the tests and all shit for A2 only!

Chemistry Unit 6 notes