- Messages
- 39
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- Points
- 18
Any guess about the phys practical ??
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the horizontal distance travelled .......hey i wana know wat distance to be used in order to determin initial horizontal velocity in projectile motion ? if the time is given to us
In first part pointer has a deflection of 6.5 degrees so by finding out the arc lenth we will get the extension byhelp me in a question may/june 2003 Q3 b) i. :S:S:S:S
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s03_qp_2.pdf
dude, for the first part y we get the arc length? isn't it curved and extension can't be curved? it should be a straight line? :/In first part pointer has a deflection of 6.5 degrees so by finding out the arc lenth we will get the extension by
(6.5/360)x2pi(1.5)=0.17
ii)in second part we have to find out the strain which is
Extension/Original length
iii)stess
Force/area=(6.0x9.81)/(7.9x10^-7)=7.44x10^7 Pa
Then we have to find the Young modulus which =Stress/strain
in the last part their is NO extension if the pointer comes back to its position....
extension is curved here the movement of pointer shows the extension so the only way to do is to get the arc lenth....dude, for the first part y we get the arc length? isn't it curved and extension can't be curved? it should be a straight line? :/
i didn't do it skipped the q .. but dude this question we r talking about is confusing my ass..in the mark scheme it says u can use s = r x theta...y did they use sin ?extension is curved here the movement of pointer shows the extension so the only way to do is to get the arc lenth....
If you did this paper how did you got the absolute error in the first question of this paper??/
sin is an alternative way to do this by by pyrhgras theoram it is not related with Rthetai didn't do it skipped the q .. but dude this question we r talking about is confusing my ass..in the mark scheme it says u can use s = r x theta...y did they use sin ?
thanks broosin is an alternative way to do this by by pyrhgras theoram it is not related with Rtheta
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w07_qp_2.pdf
Q1 (ii) part why the absolute obtained error is halved?
http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s06_qp_2.pdf
no 1cii
no 6
no 7
Bump
For 1cii, i dont know how to justify it..
For no 6, how do i know how many nodes are there? And why is 1/2lambda is 32.4 cm?
For no.7, i dont understand (a) (b) and (c)..how do i know which lamp is faulty? dont remember being taught this..
Please help. Waves in tube and electronics are my weakest topics
Nope. it aint included.
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