ALL CIE PHYSICS DOUBTS HERE !!!

[ashish]

MJ 2002 Paper 1 Q26,how do u solve this type of questions?

well 1 complete wave is formed in 4 squares therefore T= (4*2ms)
=8ms
f= 1/(8*10^-3)
=125

[HUSH1994]

thanks man,can u plz help me with Q28

[ashish]

thanks man,can u plz help me with Q28

At x there is destructive interference, therefore the path difference should be and odd multiple of of lambda by 2
 ans :c

[HUSH1994]

sorry ashish im not getting what you say,sorry for the trouble but please someone help with Q31

[elemis]

sorry ashish im not getting what you say,sorry for the trouble but please someone help with Q31

Can you attach the paper and mark scheme ?
 

[ashish]

sorry ashish im not getting what you say,sorry for the trouble but please someone help with Q31

Have you understand WAVE completely?
there is a chapter called interference! it states that when two wave completely out of phase meet there is destructive interference! no sound/ light will be heard , the experiment is just like YOUNG's double slits  experiment. you have just to apply the formula (2m+1)(wavelength/2)


ques 31 EMF is defined as the work done/ energy dissipated per unit charged moved round the circuit
I=Q/t
Ans:C

[ashish]

check this web for more info http://www.physicsclassroom.com/class/light/u12l3b.cfm [float=left][/float]

[ashish]

Have you understand WAVE completely?
there is a chapter called interference! it states that when two wave completely out of phase meet there is destructive interference! no sound will be heard , the experiment is just like YOUNG's double slits  experiment. you have just to apply the formula (2m+1)(wavelength/2)


ques 31 EMF is defined as the work done/ energy dissipated per unit charged moved round the circuit
I=Q/t
Ans:C

[iluvme]

November 2009 Paper 2 Varient 2, Q5

[elemis]

November 2009 Paper 2 Varient 2, Q5

Its a rather daft question on their part; they're trying to confuse you.

The informaion in the question states that the frequency is f.

Also, the amplitude is simply A since it has been stated in the question as such.

[aloha32]

Hi! I really need help with some medical physics
June 2004 - Medical Physics- Question 8 (b)..I can't figure out how they got the final length.I got to the part where from the graph, the time b/w pulse in 20 microseconds but can't go further.

Also, another question (not included in the paper though) is :
Give 3 reason why MR scanning would not be used to diagnose a simple bone fracture.

[muzxx]

Explain, why in practice trains do not have a constant acceleration.
[N90/III/1]

Please help mii.. :$

[elemis]

Explain, why in practice trains do not have a constant acceleration.
[N90/III/1]

Please help mii.. :$

Can you attach the paper ? I dont have that question paper.

[muzxx]

i got this question from a past exam book (topic by topic), in the chapter kinematics...the question is like this.. sorry

[ashish]

i got this question from a past exam book (topic by topic), in the chapter kinematics...the question is like this.. sorry

hmm one factor is air resistance, as the speed increases (acceleration) the net force acting on the body is affected therefore there is a change in acceleration.