Knowledge in Metaphysics
Electromagnetic waves and it's applications | Physics
Physics for 1st year Engineering student.
Kunal Shah
Laws of Motion
Laws of MotionThe three physical laws that lay the foundation for the classical mechanics are the Newton’s Laws of Motion. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces.Broadly· the first law defines the force qualitatively· the second law offers a quantitative measure of force.· The third states that a single force doesn’t exists.Newton’s First Law:In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.In simple words, an object tends to be remain at rest or motion until and unless force acts upon it.Newton’s Second Law:In an inertial frame of reference, the vector sum of the forces-F on an object is equal to the mass-m of that object multiplied by the acceleration-a of the object.F=maNewton’s Third Law:When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.In simple words, every action has its equal and opposite reaction.These three laws of motion were proposed by Sir Isaac Newton in his mathematical principles of natural philosophy which was published in 1687. Newton used them to explain and investigate the motion of many physical objects and systems.For example in the 3rd volume of the text Newton showed that these laws of motion, combined with his law of universal gravitation, explained Kepler’s Laws of Planetary Motion.
Patri Divya Chandana
Kepler’s Law of Planetary Motion
Kepler’s Law of Planetary Motion· Kepler’s Laws describes the motions of the planets in the solar system.· They were proposed by a German Astronomer Johannes Kepler.Kepler’s three laws of planetary motion can be stated as follows:· First Law: All the planets of solar system revolve around the sun in elliptical orbits having the Sun as one of the foci.Second Law:A radius vector joining any planet to the sun sweeps out equal areas in equal period of time.· Third Law:The square of the orbital period of a planet is directly proportional to the cube of the semi major axis of its orbit.The elliptical orbits of the planet were indicated by calculations of the orbit of Mars. From this, Kepler inferred that other bodies in the solar system, including those farther away from the Sun, also have elliptical orbits. The second law helps to establish that when a planet is closer to the sun it travels faster. The third law expresses that the farther a planet is from the sun, the longer its orbit, and vise versa.Sir Isaac Newton showed in 1687 that relationships like Kepler’s would apply in the Solar system to a good approximation, as a consequence of his own laws of motion and law of universal gravitation.
Quantum mechanics (physics) notes
Detailed notes on quantum physics. You will get everything here. Specifically for the first year's.
Rounak Bhowal
Electromotive Force
Electromotive force, abbreviated emf, is the electrical action produced by a non-electrical source. A device that converts other forms of energy into electrical energy, such as a battery or generator, provides an emf as its output. Sometimes an analogy to water "pressure" is used to describe electromotive force
Arun Thomas
The Phase Rule
The phase rule is a general principle governing systems in thermodynamic equilibrium. If F is the number of degrees of freedom, C is the number of components and P is the number of phases, then { F=C-P+2. F=C-P+2.} It was derived by Josiah Willard Gibbs in his landmark paper titled On the Equilibrium of Heterogeneous Substances, published in parts between 1875 and 1878. The rule assumes the components do not react with each other.
Electric Current In conductors
An electric current is a flow of particles (electrons) flowing through wires and components. It is the rate of flow of charge. If the electric charge flows through a conductor, we say that there is an electric current in the conductor. In the circuits using metallic wires, electrons constitute a flow of charges.
Electrostatics
Electrostatics. In physics, electrostatics deals with the phenomena and properties of stationary or slow-moving electric charges. Electrostatic phenomena arise from the forces that electric charges exert on each other and are described by Coulomb's law.
Electromagnetic Induction
Electromagnetic Induction or Induction is a process in which a conductor is put in a particular position and magnetic field keeps varying or magnetic field is stationary and a conductor is moving. This produces a Voltage or EMF (Electromotive Force) across the electrical conductor
Current electricity
An electric current is the rate of flow of electric charge past a point or region. An electric current is said to exist when there is a net flow of electric charge through a region. In electric circuits this charge is often carried by electrons moving through a wire.
Dual nature of radiation and matter
The dual nature of matter and the dual nature of radiation were revolutionary concepts of physics. At the beginning of the twentieth century, scientists unravelled one of the best-kept secrets of nature – the wave particle duality or the dual nature of matter and radiation. Everything is a wave and a particle!
Engineering physics chapter 1 interfrence 2
In this pdf their is full knowledge of engineering physics chapter 1 interference with important terms.
Girish Teli