PLEASE DEFINE THE BELOW GIVEN CONCEPTS OF PHYSICS IN A SIMPLE WAY -
1. FRICTION
2. MOMENTUM
3. CONSERVATION OF ENERGY AND MOMENTUM
4. PRESSURE
5. ELECTROMAGNETISM
Answers
Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move.
In Newtonian mechanics, linear momentum, translational momentum, or simply momentum is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction.
The laws of conservation of energy and momentum are among the most fundamental and useful laws of physics. ... In addition, if there are no external or internal forces acting in or on a system, then the energy of that system will remain constant. Newton's First Law is hidden in these conservation laws.
Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure is the pressure relative to the ambient pressure. Various units are used to express pressure.
In SI base units: 1 N/m2, 1 kg/(m·s2), or 1 J/m3
Derivations from other quantities: p = F / A
Common symbols: p, P
Dimension: M L−1 T−2
SI unit: Pascal
Electromagnetism is a branch of Physics, deals with the electromagnetic force that occurs between electrically charged particles. The electromagnetic force is one of the four fundamental forces and exhibits electromagnetic fields such as magnetic fields, electric fields, and light.