Physics: Post your doubts here!

[Unicorn]

hey could somebody please urgently help me with qn 7bii.)
qn paper: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_22.pdf

ms: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_ms_22.pdf

please people urgent help needed....exam is just in 2 hrs pls tx

well i don't know the answer myself but judging from mark scheme mass is conserved as nothing is lost and i am assuming nitrogen particle is stationary so alpa particle must be moving to bombard it

 

[Soldier313]

well i don't know the answer myself but judging from mark scheme mass is conserved as nothing is lost and i am assuming nitrogen particle is stationary so alpa particle must be moving to bombard it

sis my qn is how did they get the MeV as 1.6x10^-13????

 

[Oliveme]

hey could somebody please urgently help me with qn 7bii.)
qn paper: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_22.pdf

ms: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_ms_22.pdf

please people urgent help needed....exam is just in 2 hrs pls tx

thank you

energy conserved means the total energy at the beginning is the same as total energy at the end no matter in what forms energy is present. so, the particle must have some sort of energy that it possesses for there to be conservation. hope you get it.

 

[Soldier313]

thank you

energy conserved means the total energy at the beginning is the same as total energy at the end no matter in what forms energy is present. so, the particle must have some sort of energy that it possesses for there to be conservation. hope you get it.

hey you are welcome.....but my qn is how did they get the MeV as 1.6 x 10^-3

 

[Oliveme]

sis my qn is how did they get the MeV as 1.6x10^-13????

1 eV = 1.6 x 10^-19 ---> the same as the elementary charge given in data sheet. so MeV would be 1.6 x 10^-19 x 1000 x 1000.

 

[Mad-Eye]

Is breadboard provided for electronic ciruit questions?

 

[Soldier313]

1 eV = 1.6 x 10^-19 ---> the same as the elementary charge given in data sheet. so MeV would be 1.6 x 10^-19 x 1000 x 1000.

omg thank you sooo much.... i can't believe i missed out the Mega1 lol...tx again....God bless u!)

 

[Unicorn]

sis my qn is how did they get the MeV as 1.6x10^-13????

ohh didn't see that lulz

anyways looking at the data sheet above e is elementary charge in MeV and M is mega and V is voltage (e and V will cancel [homogeniouty] to give kgm^2s^-2 which is energy)
so 1.1MeV is actually 1.1 * 10^6 * 1.6*10^-19= 1.76*10^-13

0.5*4*1.67*10^-27 * v^2= 1.76*10^-13

hope it helped

 

[MysteRyGiRl]

http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_w08_qp_2.pdf
umm Q no 7 bii) plzz i didnt get da mark scheme answers

 

[Peter Check]

Any predictions on what type of practicals going to come??

 

[Soldier313]

ohh didn't see that lulz

anyways looking at the data sheet above e is elementary charge in MeV and M is mega and V is voltage (e and V will cancel [homogeniouty] to give kgm^2s^-2 which is energy)
so 1.1MeV is actually 1.1 * 10^6 * 1.6*10^-19= 1.76*10^-13

0.5*4*1.67*10^-27 * v^2= 1.76*10^-13

hope it helped

hey it sure did help!.....tx sooo much n God bless

 

[MysteRyGiRl]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w08_qp_2.pdf
umm Q no 7 bii) plzz i didnt get da mark scheme answers

ummm any1 there?

 

[NokiaN95638]

Can any1 help me wid this one??
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_23.pdf
Q no 2c

 

[Unicorn]

hey it sure did help!.....tx sooo much n God bless

welcome ♥

 

[Peter Check]

CAN ANYONE SHOW ME HOW TO TAKE READINGS USING A VERNIER CALLIPERS AND A MICROMETER SCREW GAUGE????

 

[Peter Check]

For percentage uncertainity is the ratio smallest division/reading or is it HALF the smallest divison/reading ??

 

[MysteRyGiRl]

For percentage uncertainity is the ratio smallest division/reading or is it HALF the smallest divison/reading ??

half da smalest division by reading multiplied by hundred

 

[Peter Check]

half da smalest division by reading multiplied by hundred

so for a protactor measuring say 50 degree, the uncertainty will be .5/50 ??

 

[AhmedNES]

help in question 6b in november 2007 paper2 plz
http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_w07_qp_2.pdf

 

[Peter Check]

half da smalest division by reading multiplied by hundred

look at pg 49 of uncertainites in the file, the uncertainty for a ruler is quoted as plus mins 1mm, isnt 1mm the smalles division?? so shouldn't the uncerainty be plus minus .5 ??