Can we keep protons and neutrons inside nucleus without any nuclear force? How will you overcome such strong electrostatic repulsive force?

I think we can. Find out how?


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Why are we happy or sad? What determine our present state of mind? What will determine our future? How can we stay happy?

Why are we happy or sad? What determine our present state of mind? 

We are happy or sad it depends entirely upon our past.
Present is just a result of what has happened in past.

And our present depends maximum on our past decisions & actions.
Its dependency on other things is inversely proportional to their distance from us.
And after certain distance it don't depend at all upon others.

So choose your friends and love wisely.

What will determine our future?

So what we do now will determine our future.

How can we stay happy?

See we are all made of Matter (elementry particles)  and Enegry (Potential energey).
I think happiness is something like potential enegry in Physics.
When we are more happy we have more energy.
It follows the conservation law and Newton's 3rd law.
And I interpret it as whatever you give you will receive back.
So if you give 'X'  amount of happiness to others you will receive 'X' amount back. May not be exact amount from the individuals but your total should be same i.e. 'X'.
So just give happiness to others.

These are my approximate understanding of happiness using Physics laws, I may be wrong also, I am a Physicist not a Psychologist.

Electric Field Lines & Equipotential (Electric Potential) Surfaces.

● Electric field lines help us visualize the direction and
magnitude of electric fields. The electric field vector at any
point is tangent to the field line through that point. The density
of field lines in that region is proportional to the magnitude of
the electric field there. Thus, closer field lines represent a
stronger field.
● Electric field lines originate on positive charges and
terminate on negative charges. So, a field line extending from
a positive charge must end on a negative charge.

E=F/q

Equipotential Surfaces

Adjacent points that have the same electric potential form an equipotential 

surface, which can be either an imaginary surface or a real, physical surface. No net work W is done on a charged particle by an electric field when the particle moves between two points i and f on the same equipotential surface.

Electric Field Lines are perpendicular to Equipotential Surface.

Fundamental Forces and their Range.

What is Electric potential (also called the electric field potential or the electrostatic potential) ?

An electric potential (also called the electric field potential or the electrostatic potential) is the amount of electric potential energy that a unitary point electric charge would have if located at any point in space, and is equal:

• to the work done by an external agent in carrying a unit of positive charge 
• from the arbitrarily chosen reference point (usually infinity) to that point
• without any acceleration
• without changing the system of charge which is producing this electric field.

CONFUSED ELECTRON PHYSICS ACADEMY, Huda Plot-165, Near Devinder Vihar, SEC-56, Gurgaon.

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HOW TO BRING DOWN THE MOON TO EARTH? Calculate the amount of electrons in KG we need to transfer to Moon from the Earth?

HOW TO BRING DOWN THE MOON TO EARTH? Calculate the amount of electrons in KG we need to transfer to Moon from the Earth?

If we transfer 320 KG of electrons from the earth to moon the Earth will become positive charged and moon negative charged.

Both will have a charge of
5.6 x 10 ^ 13 C each.

Both will attract each other with twice their original force. 

Is it sufficient to bring down the moon to earth?

What are consequences of such a small amount of mass transfer?

CONFUSED ELECTRON PHYSICS ACADEMY, Huda Plot-165, Near Devinder Vihar, SEC-56, Gurgaon.

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WHAT ARE FUNDAMENTAL UNITS/PHYSICAL QUANTITY IN PHYSICS?

WHAT ARE FUNDAMENTAL UNITS/PHYSICAL QUANTITY IN PHYSICS?

The minimum set of units/physical quantity which are required to produce all other units/physical quantity are called "FUNDAMENTAL UNITS/PHYSICAL QUANTITY".

It includes:

1. LENGTH-                                                                               FOR SPACE
2. MASS-                             FOR MASS RELATED PROPERTY OF MATTER 
3. TIME-                                                                                      FOR CHANGE
4. TEMPERATURE -                         FOR INTERNAL ENERGY OF MATTER
5. LUMINOUS INTENSITY-                  FOR QUANTITY OF VISIBLE LIGHT
6. AMOUNT OF SUBSTANCE -                                FOR NOS OF ANY OBJECT
7. ELECTRIC CURRENT-    FOR CHARGE RELATED PROPERTY OF MATTER

CONFUSED ELECTRON PHYSICS ACADEMY, Huda Plot-165, Near Devinder Vihar, SEC-56, Gurgaon.
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WHAT IS BIOLOGY?

WHAT IS BIOLOGY?

Quantum Electrodynamic Engineering  of Atoms.

CONFUSED ELECTRON PHYSICS ACADEMY, SEC-56, GURGAON.
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WHAT IS CHEMISTRY?

WHAT IS CHEMISTRY?

Electromagnetic Engineering  of Atoms.

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IIT JEE MAIN 2016 PHYSICS SOLUTION

QUESTION SET -E 

Q.1 ?

ANS - 2

ANS - 3

ANS -4

ANS-1

ANS-4

 ANS - 1

Q.8 [2]

Q.9 [1] 

ANS - 4

Q.11 [3]

Q.12 [1]

ANS-3

Q.14 [3]

Q.15 [4] 

4

4

1

ANS - 3

3

Q.21 [1] 

ANS - 4

Q.23 [3] 

Q.24 [1] 

Q.25 [2] 

Q.26 [4]

Q.27 [1] 

Q.28 [1] 

Q.29 [1]

Q.30 - 2

Newton's Laws for Rotation.

1st Law : The rotational principle of inertia:
The rotational principle of inertia: In the absence of a net applied torque, the angular velocity remains unchanged.

2nd Law: The rate of change of Angular Momentum:

τ = I α

This is not as general a relationship as the linear one because the moment of inertia, I, is not strictly a scalar quantity. The rotational equation is limited to rotation about a single principal axis, which in simple cases is an axis of symmetry.

3rd Law: Reaction Torque:

For every applied torque, there is an equal and opposite reaction torque. (A result of Newton's 3^rd law of linear motion.)

If we can somehow cheat any of these laws we can have perpetual machines requiring no energy inputs.