Category: Facts

Expansion of Solids

Science > Physics > Thermal Properties of Matter and Thermodynamics > Expansion of Solids Whenever there is an increase in the dimensions of a body due to heating, then the body is said to be expanded and the phenomenon is known as expansion of solids. Solids undergo three types of expansions a) Linear (Longitudinal) expansions, […]

Tags Areal expansion, Change in area, Change in length, Change in volume, Coefficient of areal expansion, Coefficient of cubical expansion, Coefficient of linear expansion, Coefficient of longitudinal expansion, Coefficient of superficial expansion, Coefficient of volumetric expansion, Cubical expansion, Expansion of solids, Linear expansion, Longitudinal expansion, Superficial expansion, Volumetric expansion

Physics

Specific Heats of Gases

Science > Physics > Kinetic Theory of Gases > Specific Heats of Gases In this article, we shall study the concept of specific heat capacities or Specific heats of gases. Solids and liquids have only one specific heat, while gases have two specific heats: In the case of solids and liquids, a small change in […]

Tags Average velocity, Avogadro's hypothesis, Free path, Ideal gas, Kinetic theory of gases, Mayer's relation, Mean free path, Mean square velocity, Mean velocity, Molar specific heat, Principal specific heat, Ratio of specific heats, Real gas, Root mean square velocity, Specific heat at constant pressure, Specific heat at constant volume, Specific heats of gases

Physics

Degree of Freedom of Gas Molecules

Post author By Hemant More
Post date January 25, 2020
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Science > Physics > Kinetic Theory of Gases > Degree of Freedom of Gas Molecules In this article, we shall study the concept of degree of freedom of gas molecules. Degree of freedom for different types of gases. We shall also find the ratio of specific heats for different types of gases. Degree of Freedom […]

Tags Average velocity, Avogadro's hypothesis, Free path, Ideal gas, Kinetic theory of gases, Mayer's relation, Mean free path, Mean square velocity, Mean velocity, Molar specific heat, Principal specific heat, Ratio of specific heats, Real gas, Root mean square velocity, Specific heat at constant pressure, Specific heat at constant volume, Specific heats of gases

Physics

Numerical Problems on Kinetic Theory of Gases

Post author By Hemant More
Post date January 25, 2020
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Science > Physics > Kinetic Theory of Gases > Numerical Problems on Kinetic Theory of Gases In this article, we shall study to find r.ms. speed of gas molecules, density of gas, pressure exerted by the gas using kinetic theory of gases. Example 01: Calculate the R.M.S. velocity of Hydrogen molecules at N.T.P. given: Density […]

Tags Average velocity, Avogadro's hypothesis, Free path, Ideal gas, Kinetic energy of gas, Kinetic theory of gases, Mean free path, Mean square velocity, Mean velocity, Real gas, Root mean square velocity

Physical Chemistry

Packing Efficiency of Unit Cell

Post author By Hemant More
Post date January 24, 2020
9 Comments on Packing Efficiency of Unit Cell

Science > Chemistry > Solid State > Packing Efficiency of Unit Cell In this article, we shall study the packing efficiency of different types of unit cells. In whatever way the constituent particles atoms, molecules or ions are packed, there is always some free space in the form of voids. The fraction of the total […]

Physical Chemistry

Bravais Lattices

Science > Chemistry > Solid State > Bravais Lattices In this article, we shall study the structures of Bravais Lattices. A crystal is a homogenous portion of a solid substance made of a regular pattern of structural units bonded by plane surfaces making a definite angle with each other. Unit Cell: A unit cell is […]

Tags Body-centered, Bravais Lattices, Chemistry, Coordination number, Crystal lattice, Cubic, Cubic structures, End centered, face-centered, Hexagonal, Mono Clinic, Orthorhombic, Simple primitive, Solid-state, Tetragonal, Triclinic, Unit cell

Zoology

Phylum Porifera

Next phylum in the classification of the animal kingdom is phylum Porifera. Members of phylum Porifera are commonly known as sponges. They are the simplest pore-bearing and primitive multicellular organisms. General Characteristics of Phylum Porifera: Habitat: They are aquatic generally marine (few species are found in freshwater). They are found solitary (live alone) as well […]

Physics

Pressure Exerted by Gas

Science > Physics > Kinetic Theory of Gases > Pressure Exerted by Gas In this article, we shall study to derive an expression for pressure exerted by gas on the walls of container. We shall also derivation of different gas laws using the kinetic theory of gases. Expression for Pressure Exerted by a Gas Using […]

Tags Average velocity, Avogadro's hypothesis, Boyle's law, Charle's law, Dalton's law of partial pressure, Free path, Ideal gas, Kinetic energy of glass molecule, Kinetic theory of gases, Maxwell distributions, Mean free path, Mean square velocity, Mean velocity, Real gas, Root mean square velocity

Physics

Kinetic Theory of Gases

Science > Physics > Kinetic Theory of Gases > Introduction to Kinetic Theory of Gases In this article, we shall study a very important concept called kinetic theory of gases, using which we can explain behaviour of the gases. Ideal Gas: A gas which obeys gas laws at all temperatures and pressures is called an […]

Tags Average velocity, Avogadro's hypothesis, Free path, Ideal gas, Kinetic theory of gases, Mean free path, Mean square velocity, Mean velocity, Real gas, Root mean square velocity

Physics

Escape Velocity of a Body

Science > Physics > Gravitation > Escape Velocity of a Body If the velocity of upward projection is increased, a stage will be reached when the velocity given to the body is such that, the kinetic energy of the body is sufficient to overcome the gravitational influence of the earth. This velocity is known as […]

Tags Binding energy of satellite, Circular orbit, Critical velocity, Elliptical orbit, Escape velocity, Gravitation, Horizontal velocity, Hyperbolic orbit, Orbital velocity, Orbits of satellite, Parabolic orbit, Period of satellite