kinetics

If one end of a metal rod is placed in a stove, the temperature of the other end increases gradually. Heat is transferred from one end of the rod to the other end. This transfer takes place due to molecular collisions and the process is called heat conduction. The molecules at one end of the rod ga..

Energy is a number that we associate with a system of one or more objects. If a force acts on one of the objects, making it move, then the number changes. After countless experiments, scientists and engineers realised that if the scheme by which we assign these energy numbers is planned carefully,..

Energy can manifest itself in a number of forms. We have already seen that it can be in the form of mechanical energy, which is subdivided into kinetic energy and potential energ..

Question: What type of energy is possessed by wind? Answer: Kinetic ener..

Law of Conservation of Energy - Let us see what is actually taking place in the following examples: Steam engine: The coal burns. Heat due to the combustion of coal converts water into steam. The expansive force exerted by the steam on the piston of the engine moves the locomotive. Chemical energy ..

To cause a displacement of a body controlled by elastic forces, work has to be done. For example, work has to be done in stretching a spring against the elastic forces. This work will be stored in the body as potential energy. When the deforming force is released, this potential energy manife..

Zero Order Reaction - Example 4: Ammonia (NH 3 ) gas decomposes over platinum catalyst to nitrogen gas (N 2 ) and hydrogen gas (H 2 ). The chemical reaction is as follows: fig 6.4(a) - Concentration versus time profile for a zero order react..

Conversion of gravitational potential energy to kinetic energy: When a body falls from a certain height, its kinetic energy increases. ..

First Law of Thermodynamics or Law of Conservation of Energy - The total energy in the universe is present either as kinetic energy or as potential energy. For example, the water stored in a dam possesses potential energy by virtue of its height (position). When this water is allowed to f..

The vapour pressure of a liquid increases with increasing temperature. As the temperature increases, the number of molecules, which have larger kinetic energy to overcome the intermolecular cohesive forces, increases. As a result more molecules escape from the surface of the liquid and c..