Protons and neutrons exist together in an extremely small space within the nucleus. How is this possible when protons repel each other?

Firstly you have to get a rough idea of four fundamental forces of nature.

There are four fundamental forces in nature.

1.Gravity. 

2.The weak nuclear force. 

3.Electromagnetism. 

4.The strong nuclear force. 

The list is in ascending order in terms of strength.

Proton repelling each other is due electro magnetic force but protons and neutrons sticking to each other is due to strong nuclear force. As strong nuclear force is greater than electro magnetic force, the nucleus has...

State's all three Newton's laws of motion .

1. Newton's First Law of Motion (Law of Inertia):

- "An object at rest tends to stay at rest, and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an external force."

- In simpler terms, this means that an object will maintain its state of motion (whether at rest or moving) unless an external force acts upon it. If no force is applied, the object will continue its motion or remain at rest.

2. Newton's Second Law of Motion (Law of...

MCQs From Dynamics       From: HC Verma Physics Volume 11. A body of weight w1 is suspended from the ceiling of a room through a chain of weight w, . The ceiling pulls the chain by a force (a) w1 (...

1.(c) w1 + w2

2.(b) the ground on the horse 

3.(d) the road

4.(c) mg cosθ

5.(b) mg/cosθ

6.(d) remain standing

7.(a) zero

8.(a) F1 must be equal to F2 

9.(b) A will go higher than B

10.(c) remain at the top of the wedge 

11.(b) t1 > t2 

12.(b) cannot be an inertial frame because the earth is 

revolving around the sun 

                  And

     (d) cannot be an...