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http://tinypic.com/view.php?pic=wslo45&s=5you are asking the person who asked the question to answer you. .
i love forces except when they include weight but electricity is madnesssss
Use the Geiger Muller tube to check the count-rate. Now place a thin sheet of paper in front of the tube, if alpha is present, it will alter the rate. Note this down. Now place an aluminium sheet in front of the tube, if it stops the radiation by the same amount, It means beta is not present.please help me with question number 7(b) i went through the marking scheme but couldn't understand it, please explain
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_23.pdf
View attachment 24630
in 3ci see that other than the weight the only external force that can act on the card is where its in contact with something and its DEFINITELY not the hand because they r asking about AFTER u release the card so it will be around the rod... that figured out u need to think of one force basically becuase one is a definite friction..... so think over it what is keeping the card on the rod?? there is a reactive force of the rod holding the card up ryt?? against its weight?? so there must be and upward force or there is another option of the rod's weight acting bcz that too is happening ryt?
ok i;m not solving this part but here's wat u need to do... I'll just run u through the method
Thanks bruvI is directly propotional to A^2
I = kA^2
I/A^2 = k
We always find the value of k and then find the twice the amplitude etc etc..
Like if I is 6 and A is 2 .. and another wave has Double the amplitude..
6= k(2^2)
6= 4k
k= 1.5
I=kA^2
I=1.5(2*2)^2
I=24 Answer..
similarly in terms of I and A..
I = kA^2
k = I/A^2
Doubling A means ..
I = kA^2
I = k (2A)^2
I = k*4A^2
I = 4A^2 * I/A^2
I = 4I
when you get a bright fringe, the waves interfere constructively i.e the phase difference is either 0* or 360* or n(360)okay guys plz explain this concept in Q6aii from this paper:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_22.pdf
how do v get the phase difference? I got the one at P but even that was a guess... help plzz
I looked over it but i couldn't explain it either.. sorry :/ and tag me wen u get the answer plzKoi Meri Problem to solve karde :'(
Okaaay, I will.I looked over it but i couldn't explain it either.. sorry :/ and tag me wen u get the answer plz
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