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thanx......so glass is.....?copper and diamond are crystalline substances
yes the ans is glassthanx......so glass is.....?
so copper and diamond and glass are crystalline?????? sorry i didnt get ityes the ans is glass
ASSALAMOALIKUM,please explain question no 17 and 24 please
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_12.pdf
ans 17-C
24-B
number-5 as 300 revolution per minute means 50 revolution per second so thats the frequesncy time period=1/50 equal to 0.02 seconds and then answer would be 10 becuse 10^-3 multiplied by is 10 equal to 0.01 so hlf wave would be displayed which is clear displayed compared to all other like in option A alot of waves will be produce which will be very hard to see in option c and d very huge wave would be seen making hardly any wavelenght so b is the answeranyone knows how to solve mcq 5 and 9 of 0ct nov 2010 variant 11??
geek101 Capricedcapri
qn 5 on/11, v 1:
3000 revolutions per minute = 50 revolutions per second, which is basically the frequency
so 50 Hz u use this to find periodic time since T = 1/f
u get 20ms as periodic time -----> 0.02s
then i am not sure if this is the appropriate way of doing it but i used each of the choices and tested like this:
A. ) 1s = 1cm
0.02s = ? u get 0.02 cm so basically each wave occupies just 0.02 cm that's a very high freq and waveforms wont be clear
B. ) 10 ms = 1cm
20ms = ? 2cm , that means each wave will occupy 2 cm, so i will have 5 waveforms, pretty clear
C. ) 100 microsecond = 1cm
20 x 10^ 3 microsecond = ? u get 200cm , whoa! that's impossible , i only have 10 cm on the screen
D .) 1 microsecond = 1cm
20 x 10 ^3 microsecond = ? u get 20 x 10 ^ 3 cm, impossible
hence answer is B
sorry bt cud u show hw u gt 53.1 as ur angle, coz i gt 45 as my angle.....thanxASSALAMOALIKUM,
take vertical components of both tention s tentions vertical components would be in opposite direction to p so 4cos53.13 is equal to p note we dont have to multiply by 2 although there are 2 tentions but in question they mentioned tention in eleastic so thats the total tention of the system and i got angle by normal trig
hope that helps
anytym g' luck to you too inshaAllah i hope this du'a is fulfilled and i come out with a smilebrilliant sistaa! THANK YOUU good luck for tomorrow, inshaAllah ur gonna come out with a smile on yar face, and ace it!
ASSALAMOALIKUM,
take vertical components of both tention s tentions vertical components would be in opposite direction to p so 4cos53.13 is equal to p note we dont have to multiply by 2 although there are 2 tentions but in question they mentioned tention in eleastic so thats the total tention of the system and i got angle by normal trig
hope that helps
please can u helpp??sorry bt cud u show hw u gt 53.1 as ur angle, coz i gt 45 as my angle.....thanx
soory for late replying i was searching for that paperplease can u helpp??
can you please check and tell me whether my explanation is right for this qyestiongeek101 Capricedcapri
qn 5 on/11, v 1:
3000 revolutions per minute = 50 revolutions per second, which is basically the frequency
so 50 Hz u use this to find periodic time since T = 1/f
u get 20ms as periodic time -----> 0.02s
then i am not sure if this is the appropriate way of doing it but i used each of the choices and tested like this:
A. ) 1s = 1cm
0.02s = ? u get 0.02 cm so basically each wave occupies just 0.02 cm that's a very high freq and waveforms wont be clear
B. ) 10 ms = 1cm
20ms = ? 2cm , that means each wave will occupy 2 cm, so i will have 5 waveforms, pretty clear
C. ) 100 microsecond = 1cm
20 x 10^ 3 microsecond = ? u get 200cm , whoa! that's impossible , i only have 10 cm on the screen
D .) 1 microsecond = 1cm
20 x 10 ^3 microsecond = ? u get 20 x 10 ^ 3 cm, impossible
hence answer is B
no only copper and diamond are crystalline glass is not crystalline em sori i realised i wrote glass as the ans the ans is copper.....so copper and diamond and glass are crystalline?????? sorry i didnt get it
everythin was similar to the way i understood, except that for the choice B u said that half wave would be displayed....while i thought 5 waveforms will be displayed....can you please check and tell me whether my explanation is right for this qyestion
thanks
ROCKING DUDE!!.....................U'RE GONNA GET THE SHIT OUT OV 2DAY'S PAPER!!....LOLgeek101 Capricedcapri
qn 5 on/11, v 1:
3000 revolutions per minute = 50 revolutions per second, which is basically the frequency
so 50 Hz u use this to find periodic time since T = 1/f
u get 20ms as periodic time -----> 0.02s
then i am not sure if this is the appropriate way of doing it but i used each of the choices and tested like this:
A. ) 1s = 1cm
0.02s = ? u get 0.02 cm so basically each wave occupies just 0.02 cm that's a very high freq and waveforms wont be clear
B. ) 10 ms = 1cm
20ms = ? 2cm , that means each wave will occupy 2 cm, so i will have 5 waveforms, pretty clear
C. ) 100 microsecond = 1cm
20 x 10^ 3 microsecond = ? u get 200cm , whoa! that's impossible , i only have 10 cm on the screen
D .) 1 microsecond = 1cm
20 x 10 ^3 microsecond = ? u get 20 x 10 ^ 3 cm, impossible
hence answer is B
lol tx.....chill girl!ROCKING DUDE!!.....................U'RE GONNA GET THE SHIT OUT OV 2DAY'S PAPER!!....LOL
soory i didnt undersant 5 wave forms like isnt it 1/2 wave lenghteverythin was similar to the way i understood, except that for the choice B u said that half wave would be displayed....while i thought 5 waveforms will be displayed....
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