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Quarks, conservation, entanglement

Doubt from AskPhysics.com
I have heard the following statements->
1. Quarks always exist in a group of 2 or 3, and can not stand alone.

2. Protons are made up of 2 up quarks, and 1 down quark.

3. Quantum mechanics allows us to entangle a particle by somehow dividing it into 2(For example, if a proton’s energy is 5 joules, if we split into 2 then sum of both splitted particles will have energy sum of 5 joules.)

Aren’t the statements contradicting each other? Please tell me correct if anyone of my statement is incorrect. Thank You!

Answers invited from all

Prepare for Physics oral test too during lockdown

Plus Two Physics Oral Test series Many schools have started oral questioning also as part of diagnostic and formative assessment. The initiative was …

Prepare for Physics oral test too during lockdown

A numerical problem from motion in 1 Dimension

A boy plays with a ball on a field surrounded by a fence which has a height of 2.5m . He kicks the ball vertically up from a height of 0.4m with a speed of 14 ms−1. (a) What is the maximum height of the ball above the fence? (b) What is the time taken to reach the maximum height? (c) How long is the ball above the height of the fence? (d) What is the velocity of the falling ball at the height of the fence? (e) What the acceleration of the ball after 1s ?

Asked John

Answer:

(a)

u=14 m/s

v=0 m/s at max height

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National Education Policy 2020 : Introduction

National Education Policy 2020 : Introduction, Read Along or Listen

If you are not getting time to read National Education Policy 2020, read along with this or listen to the reading. This is a verbatim reading out aloud of the National Education Policy 2020. The reader reads it in an impressive manner giving stress and tone variations at places to make the listening more enjoyable.

The fundamental principles

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Vivek Sir demonstrating Experiment on measuring resistance

Jigyasa webinar on artificial intelligence

Differentiation and integration for class XI Physics

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Schrodinger’s Cat in Daily Life

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