IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: Assi1993 on November 19, 2010, 09:24:33 pm

Title: edexcel-physics-A2 question
Post by: Assi1993 on November 19, 2010, 09:24:33 pm
here's the question,
Protons are accelerated to an energy of 10Gev and the beam is made to collide head-on with a beam of anti-protons,also with an energy of 10GeV.How much energy is available from each collision to produce new particles?
Take the protons mass as 940MeV/c^2

waiting!!!.........
Title: Re: edexcel-physics-A2 question
Post by: Deadly_king on November 24, 2010, 04:42:16 am
Quote from: Assi1993 on November 19, 2010, 09:24:33 pm
here's the question,
Protons are accelerated to an energy of 10Gev and the beam is made to collide head-on with a beam of anti-protons,also with an energy of 10GeV.How much energy is available from each collision to produce new particles?
Take the protons mass as 940MeV/c^2

waiting!!!.........

DO you have the answers because am not sure ? :-[
Title: Re: edexcel-physics-A2 question
Post by: Assi1993 on November 24, 2010, 01:59:17 pm
21.9GeV
i dont know how but :|
Title: Re: edexcel-physics-A2 question
Post by: Deadly_king on November 25, 2010, 06:20:49 am
Quote from: Assi1993 on November 24, 2010, 01:59:17 pm
21.9GeV
i dont know how but :|

Total energy of the particles initially are (10+10)= 20 GeV

Now we need to find the binding energy of the particles.

E = ^mc2

^m : Mass defect

The mass defect will be [940MeV/c2 - - 940MeV/c2] = 1880MeV/c2 since both protons and anti-protons have same mass but are oppositely charged.

Therefore binding energy will be : E = 1880MeV/c2 x c2 = 1880MeV

So total energy available for products : 20GeV + 1880MeV = 21.9GeV
Title: Re: edexcel-physics-A2 question
Post by: Assi1993 on November 25, 2010, 01:55:08 pm
u knw what? ur da best!!!
may God bless u alwayyyz!! Ameen
Title: Re: edexcel-physics-A2 question
Post by: Deadly_king on November 29, 2010, 08:24:11 am
Quote from: Assi1993 on November 25, 2010, 01:55:08 pm
u knw what? ur da best!!!
may God bless u alwayyyz!! Ameen

Hehe..........am not the best.

You'll be comparable or even better than me on the eve of your exams. ;)

Thank you  :D

Thumma Ameen ;D