Physics P-22 GT.

[kitkat <3 :P]

how many of them match

the ones i remember i.e. 3rd and 4th

 

[Afzal1]

the electricity part
and the first question

 

[Snowysangel]

see the stress = F/a and since A=d^2
so for p (it is f/d^2) and for q(f/4d^2) so rtio is 1:4

strain = stress / young modulus
since it is same material the E is same
so 1/E FOR P
AND 4/E FOR Q
SO IT IS 4:1

Divide that by F/d^2...you end up with 1 and 1/4 and not the other way round

 

[Snowysangel]

my answers
1)Am-1k-1
2)1.25*10^4 uncert 775 (6.2% of 1.25*10^4)
the acceleration was 2.6, 169N, 49N
3) 180, 22.9, 90, 90
4) 1:4 and 4:1
5) 24-(2.4*6) = 9.6 , 4ohms, 68.6 W
6) i dont remeber

Why did u get 2 90s for the third question?

 

[kitkat <3 :P]

Divide that by F/d^2...you end up with 1 and 1/4 and not the other way round

why are u dividing ._.?

 

[Snowysangel]

why are u dividing ._.?

Or take it as common why were there 2 90J in q3??

 

[kitkat <3 :P]

Or take it as common why were there 2 90J in q3??

:/ I am not getting u can u explain how u did It
cux he is subtracting 90 from 180

 

[Snowysangel]

:/ I am not getting u can u explain how u did It
cux he is subtracting 90 from 180

Dude 4 is in the denominator and not the numerator...so the simplest ratio will be 1 : 1/4. Whaat? I didn't get two same answers for the energy question! I got around 76 J for change in kinetic energy a d that was my last answer :/

 

[Sumet Manandhar]

can anyone tell me the ratio of stress and strain?

 

[Princess Raven]

U

my answers
1)Am-1k-1
2)1.25*10^4 uncert 775 (6.2% of 1.25*10^4)
the acceleration was 2.6, 169N, 49N
3) 180, 22.9, 90, 90
4) 1:4 and 4:1
5) 24-(2.4*6) = 9.6 , 4ohms, 68.6 W
6) i dont remeber

um ur 1st answer is for sure wrong..
Where in the world did amphere come from and ur 5th answer the answer to the resistance question was 12 not 40

 

[Afzal1]

U

um ur 1st answer is for sure wrong..
Where in the world did amphere come from and ur 5th answer the answer to the resistance question was 12 not 40

it was Q/t = something
so the SIUNITS for that should be Ampere since I=q/t

 

[Mustafa Malik]

it was Q/t = something
so the SIUNITS for that should be Ampere since I=q/t

Q was energy not charge......

 

[Afzal1]

i got 4 ohms thru potential divider formula..

 

[IndianMan]

it was Q/t = something
so the SIUNITS for that should be Ampere since I=q/t

Dude Q/t was power...we calculated its SI units in the first part...

 

[hmkbwp95]

what was the power in electricity question?

 

[hmkbwp95]

it was Q/t = something
so the SIUNITS for that should be Ampere since I=q/t

bro it was energy not charge.

 

[Princess Raven]

what was the power in electricity question?

58W

 

[Snowysangel]

bro it was energy not charge.

No it was charge

 

[kitkat <3 :P]

No it was charge

it was energy it was mentioned in the qustion

 

[Snowysangel]

Okay let's just stop