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AS Physics P1 MCQs Preparation Thread.

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any one pls help needed queston no 5
 

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Anyone pls plss q13 25 and 26 pls pls do reply :)
Q 13..in ths question v consider KE to b eqaul to the components... so KE= the horizontal component, i,e 1) KE=1/2 m (v cos 45)^2 or 2) KE= 1/2 m V^2 cos 45^2....
.. at the highest point velocity = 0, tats da reason ve use the horizontal component..n not the verticle...here we will use da 2nd equations...
1/2mv^2= E.. ..therfr substitue ths in da equation where u will gt KE= E cos 45^2...
= cos 45^2= o.5. =o.5E------- ans A

fr qustn 25,,i keep gtn da ans as A..bt ms sys its D...il try figurin out n thn let u knw...

hav i made ma slf clear??? (y)
 
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f********ck!!!! after seeing these questions and realize that i m not able to solve thme so i felt that i will fail!!!! should i just stop studying?
 
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this question seems hard, can anyone explain?

use the equation R = PL / A here P = resistivity
since R = V/ I
then V / I = PL / A
rearrange to make I the subject, you get I = VA / PL
now since P is the same its the same material so ignore it....
the v is now 2v and l is now 2l and since the diameter is doubled the radius is also doubled, and in area we use r^2 so the area increases by a factor of 2^2 = 4 so now its 4A
pop it into the equation = 2V x 4A / 2L = 4I
 
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f********ck!!!! after seeing these questions and realize that i m not able to solve thme so i felt that i will fail!!!! should i just stop studying?
tat wont hlp..knw ur theory n do all da possibl pst prps..u will b abl to do it..aftr all u cn post ur doubts or any kind of hlp u need :) ..tats y v ppl r thr ryt??
its neva too lts..u cn strt fresh!!!(y)
 
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Q 13..in ths question v consider KE to b eqaul to the components... so KE= the horizontal component, i,e 1) KE=1/2 m (v cos 45)^2 or 2) KE= 1/2 m V^2 cos 45^2....
.. at the highest point velocity = 0, tats da reason ve use the horizontal component..n not the verticle...here we will use da 2nd equations...
1/2mv^2= E.. ..therfr substitue ths in da equation where u will gt KE= E cos 45^2...
= cos 45^2= o.5. =o.5E------- ans A

fr qustn 25,,i keep gtn da ans as A..bt ms sys its D...il try figurin out n thn let u knw...

hav i made ma slf clear??? (y)
nothing clear ! :(
 
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Any one pls help me out wit dese questions plsss :(
Q 13 25 26 of N09
Q8 15 20 of J10 variant 12
q5 N10 variant 11

HELP WILL BE APPRECIATED THANKS ALOT :)
 

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  • 9702_w09_ms_12.pdf
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  • 9702_s10_ms_12.pdf
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  • 9702_s10_qp_12.pdf
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  • 9702_w10_ms_11.pdf
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  • 9702_w10_qp_11.pdf
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