Physics: Post your doubts here!

[farhan143]

yes i am in AS and am goin to gve my as levels exam in this coming may!
what about you

 

[smzimran]

yes i am in AS and am goin to gve my as levels exam in this coming may!
what about you

You may check my profile for my information in the information bar. I dnt want to type it all over again.

 

[farhan143]

what is a veritcal component and a horizontal component??
i mean how do you find it
4 example the question in 2003 may/june P1 q7
pls chck it out

 

[smzimran]

Can you post the link to this paper?

 

[Ashique]

ratio of volumes : ratio of lengths = 3:1
because volume = (length)^3

Thanks man. Can you also have a look at question 2 b i and ii? I suck at questions involving ratios. Simply go blank.

 

[smzimran]

Thanks man. Can you also have a look at question 2 b i and ii? I suck at questions involving ratios. Simply go blank.

Q 2 b has only one part and it is aboutfield strength not ratios

 

[farhan143]

Does anybody have the formulae list for As/A level physics

 

[aliya_zad]

It's there on the first two pages of every pastpaper!

 

[farhan143]

I kno that.... thank you!.......but
no, i mean the complete formula list for all the chapter in physics...
past papers don't give the full formulae list of all the chapters from AS

 

[smzimran]

Check the data booklet. i hope u find it.

 

[smzimran]

Check the data booklet. i hope u find it.

 

[farhan143]

which data bookltet ???
i dont hv a data booklet!

 

[farhan143]

provide the link for the data booklet thnk you!!

 

[smzimran]

provide the link for the data booklet thnk you!!

Its in section 6.5 of the syllabus.
Here is the link to the syllabus:
http://www.xtremepapers.com/CIE/International A And AS Level/9702 - Physics/9702_y12_sy.pdf

 

[Duanoor]

Is this specific accoustic impedance?

nai yr...it stress over strain...ask from ur phy teacher about it pls...and thn answer me...

 

[Duanoor]

the whole solution cannot not have uniform boiling point. It is the property of the pure substance...​

u r not getting my point...well leave it...i have comprehended this point...

 

[smzimran]

nai yr...it stress over strain...ask from ur phy teacher about it pls...and thn answer me...

ok i will...
But i think it is not there in the A level syllabus

 

[Duanoor]

modulus of velocity

and sorry it is modulus of elasticity

 

[Duanoor]

ok i will...
But i think it is not there in the A level syllabus[/
ur teacher must be familiar with this...

 

[Duanoor]

Sound propagates by transferring energy from one particle of the medium to the other.
So when the medium particles will be close to each other (i.e. density of the medium is increased) the energy transfer will be faster and speed of sound will increase (this we see as speed of sound is zero in vacuum, having no energy carriers).
This implies that speed of sound must be proportional to density of the medium.

But in the expression v=sqrt (gP/r) speed of sound ‘v’ is inversely proportional to the density ‘r’ of the medium, and directly proportional to ‘g’(gamma) and pressure ‘P’.

Please explain.​