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because 1m is the total length and the part of the length they are taking is 0.9 as u know R is directly proportional to length.http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_21.pdf
Question 5, b(ii), why for R they divided 0.9 by 1 ? then why *4?
yeah... its constructive interference at the blue part and destructive at the red part.
the phase difference will be 90 degree . so the crest of the drawn wave will be on40 instead of 20 . and so the whole wave will shift .http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s11_qp_23.pdf
can someone please sketch this
6(b) and c(iv) some one please
daredevil
because 1m is the total length and the part of the length they are taking is 0.9 as u know R is directly proportional to length.
and then the resistance of the total length is 4 ohm they multiply by 4.
if u don't get it this way then use the ratio method: -
0.9 : x
1 : 4
cross multiply and u willl get (0.9/1) * 4
sorry man i just saw ur post... its like haha101 said just shift the whole wave forward for 20 cm and keep all the other stuff samehttp://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s11_qp_23.pdf
can someone please sketch this
6(b) and c(iv) some one please
daredevil
yeah... its constructive interference at the blue part and destructive at the red part.
but hre's a tip. in the paper draw the destructive interference exactly between two constructives.. that way u know its exactly in the middle becz only the exact middle will give the dark fringe
If there are 2 slits and when one slit is covered ,no fringes are seen only a beam of light is seen (diffracted light).Please answer this question quickly i have a few minutes before my exam P21
What happens to the bright and dark fringes when one slit is covered?
what happens when the source is moved away?
when do I know if i have to talk about the intensity or the brightness of fringes?
THANK YOU SO MUCH
does any one have compiled notes for phy 31 that limitations of procedures and all the 8 mark question in phy practical ppr if any1 has plz upload it
searching but ive no timego through the mark schemes !
June 06 Q6Any one here discusses A2 physics? I don't get the magnetic field part 6 (a) June 2006.
June 06 Q6
(a) (i) use right hand grip rule for wire XY to check for the direction field around Y. that is Anti clockwise !
(ii) using Fleming's left hand rule..draw the force that would be a horizontal arrow in the direction Q to Y. Q -----> Y
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