Physics: Post your doubts here!

[Snowysangel]

LOL gimme question link

I don't know what year it is so I can't shouldn't the equilibrium of forces equation be applied tho? So that the total magnitude if the forces acting equals to 0....F + Fcos30 + Fsin30 = 10; someone see if it works cause I don't have a calculator on me right now

 

[Thought blocker]

I don't know what year it is so I can't shouldn't the equilibrium of forces equation be applied tho? So that the total magnitude if the forces acting equals to 0....F + Fcos30 + Fsin30 = 10; someone see if it works cause I don't have a calculator on me right now

-_- same goes for me dear! :/

 

[Snowysangel]

hi everyone,
here is my question
View attachment 44135

how do i find the answer?

Percentage uncertainty in L + 2(percentage uncertainty in T)

 

[Dr. Seuss]

oh thanks

 

[RoyalPurple]

74-63-224-172.rotatemyad.com/click.php?aid=861&said=06b_05281514p46&v=15&id=303f1e95923419f4c3082dbd549d4fc0&url=http%3A%2F%2F216.144.227.221%2Fclick.php%3Fkey%3Dc32f16f1fe5e9acbf3c3c0421f8d41318b078834ea2&btn=r&bUrl=http%3A%2F%2Fpapers.xtremepapers.com%2FCIE%2FCambridge%2520International%2520A%2520and%2520AS%2520Level%2FPhysics%2520(9702)%2F9702_s11_qp_11.pdf quest 13 ?

74-63-224-172.rotatemyad.com/click.php?aid=861&said=06b_05281514p46&v=15&id=303f1e95923419f4c3082dbd549d4fc0&url=http%3A%2F%2F216.144.227.221%2Fclick.php%3Fkey%3Dc32f16f1fe5e9acbf3c3c0421f8d41318b078834ea2&btn=r&bUrl=http%3A%2F%2Fpapers.xtremepapers.com%2FCIE%2FCambridge%2520International%2520A%2520and%2520AS%2520Level%2FPhysics%2520(9702)%2F9702_w10_qp_11.pdf

quest 5

74-63-224-172.rotatemyad.com/click.php?aid=861&said=06b_05281514p46&v=15&id=303f1e95923419f4c3082dbd549d4fc0&url=http%3A%2F%2F216.144.227.221%2Fclick.php%3Fkey%3Dc32f16f1fe5e9acbf3c3c0421f8d41318b078834ea2&btn=r&bUrl=http%3A%2F%2Fpapers.xtremepapers.com%2FCIE%2FCambridge%2520International%2520A%2520and%2520AS%2520Level%2FPhysics%2520(9702)%2F9702_w11_qp_11.pdf
ques 16


help please thnx

 

[not.maria]

u find thehorizontal and vertical components and then use pythogras theorem to find F
so 10 sin 30=5N
10 cos 30=8.66025N
5^2 +8.66025^2=100 root of 100 =10N

how is the vertical component 10sin 30?

 

[Thought blocker]

how is the vertical component 10sin 30?

Fsintheta is for vertical component, fcostheta for horizontal

 

[_Ahmad]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_13.pdf

Q2,25,31,35 PLEASE HELP!!!

 

[Dr. Seuss]

can you explain further?

 

[DeViL gURl B)]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_12.pdf

Guys question 15 please !! And 12 as well!!!! 23 as well !
Thank you

 

[RoOkaYya G]

Bro i really want to suggest u to stop thinking abt how the formula was derived becoz its not gonna help u now.I dont really want to spend tiime on this sorry.Hope u understand.

Thought blocker

shld i derive it for u?!

 

[Thought blocker]

Thought blocker

shld i derive it for u?!

lol I know how u will... but do it own ur own

 

[RoOkaYya G]

lol I know how u will... but do it own ur own

wht?
how will i do it u mean?

 

[_Ahmad]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_12.pdf

Guys question 15 please !! And 12 as well!!!! 23 as well !
Thank you

for Q15

final k.e - initial k.e = total work done

First situation,

8-4=Fs
4=Fs

second situation we have to find final k.e

final k.e - initial k.e =word done
final k.e -4 = 2F2s
final k.e -4 =4Fs

we know from first situatation that Fs =4

final k.e -4= 4(4)
final k.e = 16+4
final k.e = 20

so answer is B

 

[Thought blocker]

wht?
how will i do it u mean?

that thing u gave me

 

[RoOkaYya G]

that thing u gave me

Whch thng? the link?

 

[Thought blocker]

Whch thng? the link?

derive karo ._.

 

[RoOkaYya G]

was writing
on ur wall

 

[Thought blocker]

was writing
on ur wall

 

[_Ahmad]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_13.pdf

Q2,25,31,35 PLEASE HELP!!!