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What is the speed of an alpha particle? is it 0.1(3x10)^8?? and what about the speed of beta particles?
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Q1 )b First of all find out the radius which is 0.488anyone can help me to do oct/nov 2007 Q#2 and Q#1(b)
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w07_qp_2.pdf
Is current Vector or Scalar ?
yeah ih does when they specifically ask for 3 S.F and u lose one mark ,but normally its best to give your answers to 3 s.f and also look at the figures in the question if they are upto 3 s.f then go for 3s.f.Hey people i have an important question.. Does number of significant figures matter in phy paper 2? If answer scheme gives 2sf for final answer but i gave in 3sf, do i lose any mark?
and also i need to know the speed of alpha and beta particlesCan someone please help me with qn 7 and please provide drawings if possible...
qn paper: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_21.pdf
ms: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_ms_21.pdf
thanx soo much....
depends on the qn.....if u refer to mj/11 qp 21 , the sgf of the uncertainty in 1c.) is 1 sgf for the resistivity just lyk the resistance from the qn........so basically i am not sure but i think it's diff fr diff qnshow many significant figures do we have to give when calculating uncertainty?
First draw a rough right angled triangle(drawn in blue) and label the the hypotenuse base and height with their according speed, Now make a scale lets say 5m/s - 5boxes in the graph( I have used cms in my example). Now convert your velocities into box units,(which is basically 18m/s =18boxes) Now draw the right angled triangle again(drawn in red), this time on the graph and according to the box units. Then find the angle using a protractor( you can use trigonometry to make sure your angle measured is indeed correct)Please someone solve Q.4 d (i) and (ii)
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s07_qp_2.pdf
With explanation and diagram of-course. Thank you!
one complete cycle is 360 deg. so half a wave will be 180 deg. if you start second wave at half point of the first one, you create a phse difference of 180. a quarter you get 90 deg. a thisrd of the quarter and you get 30 deg phase difference. If you still don't get it ask me and I will explain with figures.please explain me how to make two waves in a same graph paper which have same phase angle eg 30 degree phase angle.how to make?
kindly explain with figures.one complete cycle is 360 deg. so half a wave will be 180 deg. if you start second wave at half point of the first one, you create a phse difference of 180. a quarter you get 90 deg. a thisrd of the quarter and you get 30 deg phase difference. If you still don't get it ask me and I will explain with figures.
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