Energy may exist in different forms. It can be light energy, thermal energy, potential energy, kinetic energy, chemical energy, nuclear energy, etc. Every physical matter (or body or thermodynamic system) intrinsically possesses certain amount of energy in one form or another. Such energy can be converted from one form to another for storing it within the same body. It can also be transferred from one body to another with or
Every scientific explanation is realized with the aid of a number of physical quantities — each expresses a special meaning and significance in that context. By definition, a physical quantity is measurable and quantifiable physical property that carries unique information with it. Based on the dependency nature, such quantities can be of two types — fundamental and derived. A fundamental quantity is one that is independent of other properties; while,
Every physical “matter” intrinsically consists of one or more “properties” (such as mass, weight, length, velocity, temperature, current, etc.). By definition, every property of a matter is measurable and quantifiable. Measurement of a property can be carried out with suitable instrument. However, to quantify the measured result, a “magnitude” along with its “unit” is required to present. By definition, a unit of measurement indicates “a standardized and well-defined magnitude of
By definition, a “matter” is any substance that has non-zero mass and occupies certain amount of space based on its volume. The amount of matter contained in a physical body is known as “mass”. Mass is a fundamental extensive property of every matter. A matter can exists in any one of four different states/forms, namely solid, liquid, gas, and plasma. Irrespective of its state, the Earth attracts every matter towards
