Physics: Post your doubts here!

[Albert Einstein]

Hehe..this question i've tried it by elimination and it wrked out and such types of question often appear in paper 2 as well...
Refering to my notes i've found during nuclear reaction Mass and energy, nuleon number, charge, isospine, momentum, proton number is conserved so by eliminaton i've found neutron number as answer...

Here it is http://www.miniphysics.com/2010/12/nuclear-reactions.html

 

[Farru]

A point source of sound emits energy equally in all directions at a constant rate and a person 8 m from the source listens. After a while, the intensity of the source is halved. If the person wishes the sound to seem as loud as before, how far should he be now from the source? rep asap!

 

[Albert Einstein]

someone plz help with oct/nov 07 p1 Q37
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w07_qp_1.pdf
the answer is C

and does anyone of you has the variable 2 for jun 09? i mean jun 09 p22... plz i really need it :O

Ive got it...during a nuclear reaction the neutron is converted into proton and electron therefore the neutron number is not conserved

 

[yumichikabyakuya renji]

Here it is http://www.miniphysics.com/2010/12/nuclear-reactions.html

really helpful thXx

 

[A_K_D]

Can somebody do question 3di) from the May June 2011 paper variant 23?

It would be very helpful... I've been working on it but no matter how hard I think I can't get the answer

Thank you for your Time

 

[Albert Einstein]

Can somebody do question 3di) from the May June 2011 paper variant 23?

It would be very helpful... I've been working on it but no matter how hard I think I can't get the answer

Thank you for your Time

Here u are....

 

[A_K_D]

Thank you very much sir

 

[Albert Einstein]

Thank you very much sir

Sir ?? lolzzzz u r welkum dr...

 

[geek101]

june 2002 mark scheme for paper 4 anybody??

 

[leosco1995]

june 2002 mark scheme for paper 4 anybody??

Here's a tip: If you can't find it on xtremepapers, search directly on Google using the syllabus codes. Like this: http://lmgtfy.com/?q=9702_s02_ms_4.

 

[geek101]

Here's a tip: If you can't find it on xtremepapers, search directly on Google using the syllabus codes. Like this: http://lmgtfy.com/?q=9702_s02_ms_4.

thanks man, ill do that next time

 

[Lilpumpkin]

hello
im an A-level student and decided to take maths,physics and business but since last year i didnt take business and the school is 2 weeks ahead,and the problem is,taking business now in A levels would affect me as i didnt hold up to the basis,and i got suggestions that i should repeat my year 10 in order to take business,economics or accounting...im stuck at this point
the question is am i able to cope up with business in A levels,IS IT EASY OR IS IT THAT DIFFICULT?
ANY IDEAS OR RECOMMENDATIONS WOULD BE REALLY GRATEFUL
thank you xx

 

[bamteck]

Albert Einstein Please help me for June 2009 P21 No. 7 (b) & for P22 no. 7

 

[Albert Einstein]

Albert Einstein Please help me for June 2009 P21 No. 7 (b) & for P22 no. 7

 

[Albert Einstein]

 

[Abu mota]

i dont understand how to resolve vectors at all, can anyone plz help me

 

[bamteck]

I can't understand the (b) part

 

[Albert Einstein]

I can't understand the (b) part

All what u have to consider the loop stated.. difficult to xplain it to u here,...

 

[bamteck]

All what u have to consider the loop stated.. difficult to xplain it to u here,...

Explain it to me more clearly plz !

 

[minhal]

i dont understand how to resolve vectors at all, can anyone plz help me

exactly they r so hard....cant do even book exercises...