Physics: Post your doubts here!

[RahatMT]

International A/AS Level Physics

can someone post an online link for this book (pdf version or something)

thanks in advance

 

[Abeha Malik]

Plz tell me how to solve this question
Q. A speeding motorist is travelling at a constant speed of 40 m/s on a motorway. He passes a stationary police car which immediately accelerates at a rate of 2.5 m/s^2 to a constant speed of 50 m/s. Draw a sketch graph showing the variation of speed against time for each car and find
a. The tine it takes for the police car to catch the motorist
b. The distance each will have travelled by that time

 

[The Sarcastic Retard]

International A/AS Level Physics

can someone post an online link for this book (pdf version or something)

thanks in advance

This is the oldest version of book. Why taking this?
Answering you, I dont have it.

 

[The Sarcastic Retard]

Plz tell me how to solve this question
Q. A speeding motorist is travelling at a constant speed of 40 m/s on a motorway. He passes a stationary police car which immediately accelerates at a rate of 2.5 m/s^2 to a constant speed of 50 m/s. Draw a sketch graph showing the variation of speed against time for each car and find
a. The tine it takes for the police car to catch the motorist
b. The distance each will have travelled by that time

a : 4sec
b : Distance of motorist will be 238.4 Km and for police car : 278.4 Km

Are those answers correct?

 

[Awesome12]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w07_qp_2.pdf
Question 1 (b):

How do I calculate the uncertainty in R?

 

[Awesome12]

check
http://physics-ref.blogspot.com/2014/10/9702-november-2007-paper-2-worked.html

You've just cloned the marking scheme's answer. Why is the percentage uncertainty of R half the sum of the % uncertainties?

 

[Awesome12]

check again

Now it much better. Thanks

 

[PlutoHuman]

Bit help in this one would be appreciated

 

[Awesome12]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_22.pdf

Question 2 (a) ii)

Why do I get an incorrect answer when I use the formula?:

v^2 - u^2 = 2as

- (7.29)^2 = 2 (-9.81) (s)

Furthermore, the marking scheme doesn't mention this formula? Why can't I use it?

 

[Abeha Malik]

a : 4sec
b : Distance of motorist will be 238.4 Km and for police car : 278.4 Km

Are those answers correct?

No the correct answers are 50s and 2000m

 

[tiki-taka]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_22.pdf

Question 2 (a) ii)

Why do I get an incorrect answer when I use the formula?:

v^2 - u^2 = 2as

- (7.29)^2 = 2 (-9.81) (s)

Furthermore, the marking scheme doesn't mention this formula? Why can't I use it?

h is not the max-height so V is not zero
use S=ut+0.5at^2

 

[Bba321]

http://physics-ref.blogspot.com/2014/10/9702-june-2014-paper-12-worked.html

Thanks

 

[divyaa96]

Hey could anyone help me with this question?

A car travelling with speed 28 ms-1 leaves a motorway on an exit road. The end of the exit road is 22m higher than the motorway. If only the force of gravity is considered, what will be the speed of the car at the end of the exit road?

A. 7.3 ms-1
B. 19 ms-1
C 21 ms-1
D 24 ms-1

I'd appreciate it if someone could explain to me how to do this question! Thanks

 

[Bba321]

Please explain qs 5,9,37

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_11.pdf

And qs 26 from
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_12.pdf

Qs 7 and 25 from

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_12.pdf
Thanks

 

[PlutoHuman]

why paper is this? i alreadt solved this. it's available @
http://physics-ref.blogspot.com/

search in the papers there

Its may june 2014 question paper 11

 

[akshay 999]

can someone help me wiz zis question plz.
Monochromatic light of wavelength 690 nm passes through a diffraction grating with 300 lines per mm, producing a series of maxima on a screen.What is the greatest number of maxima that can be observed?

 

[akshay 999]

check qu 30 at
http://physics-ref.blogspot.com/2014/08/9702-november-2012-paper-12-worked.html

thanks that has help me a lot

 

[xlixin]

Hello people, anyone mind explaining question 26 to me?
I dont get why can't they have the same amplitude . Thanks

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s11_qp_12.pdf

 

[NinjaInPyjamas]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_43.pdf

q 3 (b) how to calculate d from phase difference?

 

[xlixin]

check at
http://physics-ref.blogspot.com/2014/09/9702-june-2011-paper-12-worked.html

thank you!