Welcome to Talha's Physics Academy

To Help Teachers and Students.

Talha's Physics Academy

Talha's Physics Academy is an exploration environment for concepts in physics which employs free Physics Books and other linking strategies to facilitate smooth navigationThe entire environment is interconnected with thousands of links, reminiscent of a neural network.

Talha's Physics Academy

New content for Talha's Physics Academy will be posted as it is developed,It is my intent to keep this material continuously available except for brief maintenance times.

Talha's Physics Academy

All the Branches of Physics are covered.

Talha's Physics Academy

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Explain whether atomic number can increase during nuclear decay .Support your answer with example.

Ans.When a beta particle is emitted out of any nucleus,then it's mass number does not undergo any change but it's charge number increase by one.Negative Beta is an electron and its emission from the nucleus becomes an in comprehensive enigma, as there is no electron in the nucleus >how ever , the emission of electrom from the nucleus can be thought of as neutron emitting an electron and becoming a proton, although the modern explanation is not that simple.
This means that beta particle is formed at the time of emission.That is why at the time of emission of a beta particle the charge number of nucleus increases by one.

For Example:

Schaum's Outline of Vector Analysis Murray R. Spiegel







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Confusing Textbooks? Missed Lectures? Not Enough Time? . . Fortunately for you, there's Schaum's. More than 40 million students have trusted Schaum's Outlines to help them succeed in the classroom and on exams. Schaum's is the key to faster learning and higher grades in every subject. Each Outline presents all the essential course information in an easy-to-follow, topic-by-topic format. You also get hundreds of examples, solved problems, and practice exercises to test your skills. . . This Schaum's Outline gives you. . Practice problems with full explanations that reinforce knowledge. Coverage of the most up-to-date developments in your course field. In-depth review of practices and applications. . Fully compatible with your classroom text, Schaum's highlights all the important facts you need to know. Use Schaum's to shorten your study time-and get your best test scores!. . Schaum's Outlines-Problem Solved..



what is a directional derivative/gradient?

Directional Derivative

The directional derivative del _(u)f(x_0,y_0,z_0) is the rate at which the function f(x,y,z) changes at a point (x_0,y_0,z_0)in the direction u. It is a vector form of the usual derivative, and can be defined as
del _(u)f=del f·(u)/(|u|)
(1)
=lim_(h->0)(f(x+hu^^)-f(x))/h,
(2)
where del  is called "nabla" or "del" and u^^ denotes a unit vector.
The directional derivative is also often written in the notation
d/(ds)=s^^·del
(3)
=s_xpartial/(partialx)+s_ypartial/(partialy)+s_zpartial/(partialz),
(4)
where s denotes a unit vector in any given direction and partialf/partialx=f_x denotes a partial derivative.
Let u^^=(u_x,u_y,u_z) be a unit vector in Cartesian coordinates, so
 |u^^|=sqrt(u_x^2+u_y^2+u_z^2)=1,
(5)
then


 del _(u^^)f=(partialf)/(partialx)u_x+(partialf)/(partialy)u_y+(partialf)/(partialz)u_z.
(6)

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