Physics P22

[babycry]

yeah but if u use proportionality u also get 4.8v. i dno tbh

 

[creative22]

Ohh Sorry I didnt noticed it was 3:5 I acciedently wrote 2:5 here but wrote 3:5 in paper I got the same

 

[cowarrior]

yeah but if u use proportionality u also get 4.8v. i dno tbh

yeah might be...

 

[Silent Hunter]

yeah but if u use proportionality u also get 4.8v. i dno tbh

means you simply write like 40/100 x 12 = ? = 4.8 v??

 

[babycry]

yea thats what i meant.. do u agree?

 

[ICTloverz]

In the last question.. where we had to complete the equation.. can anyone tell me how to complete it.. I mena we had to add 3+3 and 2+2 as two heliums reaacted and the last part??.. Can any one tell what they wrote..

 

[mhalvi]

In the last question.. where we had to complete the equation.. can anyone tell me how to complete it.. I mena we had to add 3+3 and 2+2 as two heliums reaacted and the last part??.. Can any one tell what they wrote..

We had to write 4 and 2 for HE and 1 and 1 for proton

 

[alcoholic 111]

http://www.xtremepapers.com/community/threads/physics-oct-nov-2012-paper-22-expected-marks.21003/

Please Vote ^^

 

[AdeelRox]

guys i got 3.2V as the potential difference across CD, cux i got 4.8V across AC and 8V across AD. I simply subtracted the smaller value i.e 4.8 from th larger value i.e 8 and got 3.2V . is it correct?

 

[Albert Einstein]

what about the emission ?? wat was it ??

 

[bamteck]

what about the emission ?? wat was it ??

Alpha

 

[alcoholic 111]

what about the emission ?? wat was it ??

Alpha

It cant be Alpha !!
It's gamma radiations
Alpha is helium nuclei not radiation !!

 

[Goku]

It was alpha because a helium nucleus was released!

 

[Khalifa]

It was

It was alpha because a helium nucleus was released!

It wasnt a helium nucleus, it was a helium atom as there wasnt any charge on it.

 

[Khalifa]

What did you guys get for the change in momentum? And the one below it which was something about average momentum? Was it .065(5.2+3.7)
And then
F= .o65(8.5)/7.2ms

 

[Albert Einstein]

Alpha particle is a helium nucleus, mass 4u, charge 2p, and helium atom was released and it was isotope of helium atom, Since Gamma has mass 0u and 0p, so for the element to be an isotope, my logic says it should be gamma, and beta has a range of energies???

Still can u pleaz post ur reasoning behind ur desicions ??

 

[Kunal Patrawala]

it cant be gamma coz gamma doesnt lead to release of a proton and the charges of the ions are never mentioned they did not even mention the charge of the proton so it can very well be a helium nuclei being emitted