PHYSICS PAPER 2 DISCUSSION & QUERIES

[Snowysangel]

Could someone please post all the definitions & formulae

 

[Saad Mughal]

I don't know from where I got these so I can't give credits.
But, I do not own these notes.

 

[Rafay Sohail]

http://salman-olevelnotes.blogspot.com/p/physics.html
Give this a read. I'm sure this will help you guys a lot!

 

[iamLbert]

Can someone explain for me Magnetism and everything bout it? Also radioactivity...

 

[Shadow]

Try dis out ... Notes on all topics here https://sites.google.com/site/urbangeekclassroomsg/using-word-documents/table-of-formulae

 

[Snowysangel]

Can someone explain for me Magnetism and everything bout it? Also radioactivity...

Just remember that like poles repel and unlike poles attract. Learn the experiment which asks you to draw the magnetic field lines using compasses or sprinkling iron pieces. I think that's it...the rest is about electromagnetism

 

[Snowysangel]

Alpha partivle is a helium nucleus, beta particle is a fast moving electron and gamma radiation is an electromagnetic wave. Alpha have the greatest ionising power and weakest penetrative power while gamma have the opposite

 

[Rafay Sohail]

How do you find the half life?

 

[passion hunter]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s12_qp_22.pdf.....Q9 a(ii)....can somebody please draw the magnetic lines of force and please explain too

 

[Ahmed Raja]

I don't know from where I got these so I can't give credits.
But, I do not own these notes.

Saad Mughal please make thread for physics revision as you made in atp's so we can clarify our concepts.

 

[KWIKIW]

Who can explain bistable(flipflops) and astable(multivibrator) for CIE GCSE O level syllabus in PHYSICS?

 

[Snowysangel]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s12_qp_22.pdf.....Q9 a(ii)....can somebody please draw the magnetic lines of force and please explain too

The magnetic field lines in the iron core will be the same as those in coil A. Use the right handgrip rule...they will be in the downward direction for the top half of the core and in the upward direction for the lower half...I think

 

[Snowysangel]

How do you find the half life?

The question will give you the number of radioactive atoms at the beginning...and their number after a period of time. If say the number of atoms is 4200 at first & then drops down to 1050 after 3 minutes, then their half life is 1 minute...u apply the ratio method

 

[Snowysangel]

Okay so I still don't get how to use the hand rules...so if there's an alpha particle passing between magnetic poles, will it be attested to the North Pole or the South Pole?

 

[Snowysangel]

*attracted

 

[Fahm E Deen]

How to determine the movement in galvanometer NEEDLE ? ( ELECTROMAGNETIC INDUCTION)

 

[Shadow]

Okay so I still don't get how to use the hand rules...so if there's an alpha particle passing between magnetic poles, will it be attested to the North Pole or the South Pole?

In case of alpha particles, use Fleming's left hand rule, in case of beta particles, use Fleming's right hand rule

 

[Shadow]

How to determine the movement in galvanometer NEEDLE ? ( ELECTROMAGNETIC INDUCTION)

When same poles r generated, needle moves to right, when opposite poles r generated, needle moves to the left

 

[KWIKIW]

Can somebody explain how to find the resultant magnetic field in several different cases, such as two current carrying wires into the page which are closer to one another.

 

[Shadow]

Can somebody explain how to find the resultant magnetic field in several different cases, such as two current carrying wires into the page which are closer to one another.

When conductors carry current in same direction, they attract each other .. When conductors carry current in different direction, they repel each other