MYTUTOR SUBJECT ANSWERS

5659 views

What is the Quark structure, Baryon number, and antiparticle of a kaon, K+, which has a strangeness of 1.

Firstly we must figure out what we know about this particle. We have its stangeness which is 1 and we know its charge from the "+" symbol in the question, which is also 1.

For the first bit we should write out all of the quarks we know, along with their relevent properties. These are:

The up quark with charge of +2/3 and a strangeness of 0.

The down quark with a charge of -2/3 and a strangeness of 0.

The Strange quark with a charge of -1/3 and a strangeness of -1.

For this question we also need to know that an antiparticle has the opposite charge and strangeness to its particle counterpart.

From this information we can see that clearly an anti strange quark must be in the Kaon. Then to make the charge up to 1, we must have an up quark. This is the quark structure. 

A particle made up of an anti quark and a quark is called a meson, and you should know that all mesons have a baryon number of 0.

The antiparticle of the positive Kaon is the K- meson. Its quark structure is an anti up and a strange quark.

When doing a question like this in an exam the most difficult part is determining the quark structure. I would recommend focusing on one known quantity such as charge, and determining how many ways of adding quarks will get you the required charge, then determine the other known quantity, such as baryon number or strangeness. There will only be one possible combination. This question requires you to recall quite a lot of information and so old fashioned book work is the key to scoring well.

Louis H. A Level Maths tutor, A Level Physics tutor, A Level Physics ...

2 years ago

Answered by Louis, an A Level Physics tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

79 SUBJECT SPECIALISTS

£20 /hr

Samuel J.

Degree: Physics (Masters) - Manchester University

Subjects offered:Physics, Maths

Physics
Maths

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

£22 /hr

Chris P.

Degree: Mechanical Engineering (Masters) - Bristol University

Subjects offered:Physics, Maths+ 1 more

Physics
Maths
Further Mathematics

“Engineer from University of Bristol. Patient, understanding, knowledgeable, and ready to help you unlock your full potential and ace those exams.”

£20 /hr

Raghav A.

Degree: Chemical Engineering (Masters) - Bath University

Subjects offered:Physics, Maths+ 2 more

Physics
Maths
Chemistry
-Personal Statements-

“If you are looking for a tutor who is not only approachable and passionate about his subjects, but willing to go the extra mile, I am here to help”

About the author

Louis H.

Currently unavailable: for regular students

Degree: Theoretical Physics (Masters) - Edinburgh University

Subjects offered:Physics, Maths+ 1 more

Physics
Maths
Further Mathematics

“Hi,My name is Louis and I'm a third year Theoretical Physics student at The University of Edinburgh. I tutor Physics and Maths A level and I immensley enjoy explaining science and maths to others. My tutoring style focuses heavily o...”

MyTutor guarantee

You may also like...

Other A Level Physics questions

How do you explain why puddles evaporate on cold days ?

Define the term "Gravitational Potential" and write down a formula which defines it.

A sample of pure gold has a density of 19300 kgm^-3. If the density of a gold nucleus is 1.47x10^17Kgm^-3, discuss what this implies about the structure of the gold atom. [4 marks]

A rock has a mass of 100g and it is thrown across a pond at a speed of 30ms^-1. Calculate the de Broglie wavelength of the rock and explain whether you can see the wave produced.

View A Level Physics tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok