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hmm the answer is B, actually
you sure you have the right mark scheme infront of you?
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hmm the answer is B, actually
yes im really sure the correct answer is B :/you sure you have the right mark scheme infront of you?
heyy can some1 help me with nov.10 1st variant q.34???????????????and in da 2nd variant Q 27,34 and in 31 why cant the answer be B ??ty
paper and ms pleaseyes im really sure the correct answer is B :/
which ppr is dis?? :SQ34
lets draw a diagram first View attachment 12820
now the resistance in each wire is 0.005 per meter so resistance in 1 wire is 800 * 0.005=4
so both wires have resistance 8
we can redraw the diagram and place the resistanc of the wires as 1 single resistor component
View attachment 12821
the resistance of the relay is 16/0.6= 26.6667
using equation v/E = R1/R1 + R2
so 16/E = 26.667/26.667 + 8 solve to get E is 20.8
Q27 i can't do
Q34 answer is B because i higher resistivity for same length and area means more resistance it can't be C because it doesn't fall that sharply
Q31 answer is A because when there is a current the electrons flow in the wire when there aren't they move absurdly as they orbit protons (if you took chemistry then remember metallic structre)
and next time post paper + ms
its da same question about da frequency thing...paper and ms please
from xxxtoughxxx "heyy can some1 help me with nov.10 1st variant q.34???????????????and in da 2nd variant Q 27,34 and in 31 why cant the answer be B ??ty"which ppr is dis?? :S
its da same question about da frequency thing...
oh okfrom xxxtoughxxx "heyy can some1 help me with nov.10 1st variant q.34???????????????and in da 2nd variant Q 27,34 and in 31 why cant the answer be B ??ty"
and what are you saying about the frequency thing?
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_12.pdf
please explain question 9 why is the answer C and not D?
please some one help me with this i am posting this question the 3RD time please help
oh ok
da question on da previous page i think...
Ahh! Thank you for the helpyup that is because it is in mechanics
Ahh! Thank you for the help
yea dat question..idk someone posted a screen shot
yup dats wat i thought 2initial momentum of the ball is 2mv before collision... if collision was perfectly elastic one, all the momentum would have been gained by the ball... and this would have made the change in the momentum equal to 4mv.. 2mv-(-2mv)... now it is given that collision is inelastic, it wil losse some of its momentum to the wall.. so now change in momentum will be less than 4mv but cant be less than the initial momentum... so the answer is C.. i think you cannot verify the answer by the calculations...
Initial KE = 2 * final KE ( because the ball rebounds to half its original height)
Over here Fs = 4 JView attachment 12706View attachment 12707
Can i get the solution to these two questions?
ANS:
15 B
31 C
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