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Classical mechanics describes the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies. Besides this, many specialisations within the subject deal with gases, liquids, solids, and other specific sub-topics. Classical mechanics provides extremely accurate results as long as the domain of study is restricted to large objects and the speeds involved do not approach the speed of light. When the objects being dealt with becoming sufficiently small, it becomes necessary to introduce the other major subfield of mechanics, quantum mechanics, which reconciles the macroscopic laws of physics with the atomic nature of matter and handles the wave–particle duality of atoms and molecules. In the case of high-velocity objects approaching the speed of light, classical mechanics is enhanced by special relativity. General relativity unifies special relativity with Newton’s law of universal gravitation, allowing physicists to handle gravitation at a deeper level.

The term classical mechanics was coined in the early 20th century to describe the system of physics begun by Isaac Newton and many contemporary 17th century natural philosophers, building upon the earlier astronomical theories of Johannes Kepler, which in turn were based on the precise observations of Tycho Brahe and the studies of terrestrial projectile motion of Galileo. Since these aspects of physics were developed long before the emergence of quantum physics and relativity, some sources exclude Einstein’s theory of relativity from this category. However, a number of modern sources do include relativistic mechanics, which in their view represents classical mechanics in its most developed and most accurate form.

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested both concerned students and teachers to spread this website home and abroad.

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Energy: Energy is the capacity for doing work. You must have the energy to accomplish work – it is like the “currency” for performing work. To do 100 joules of work, you must expend 100 joules of energy.

Power: Power is the rate of doing work or the rate of using energy, which is numerically the same. If you do 100 joules of work in one second (using 100 joules of energy), the power is 100 watts.

The change in the kinetic energy of an object is equal to the net work done on the object.

This fact is referred to as the Work-Energy Principle and is often a very useful tool in mechanics problem solving. It is derivable from conservation of energy and the application of the relationships for work and energy, so it is not independent of the conservation laws. It is, in fact, a specific application of conservation of energy. However, there are so many mechanical problems which are solved efficiently by applying this principle that it merits separate attention as a working principle.

locomotive.

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested both concerned students and teachers to spread this website home and abroad.

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]]>**Math Solution Ideal Gas and Kinetic Theory of Gases**

*Math Solution Ideal Gas and Kinetic Theory of Gases*

Math Solution Ideal Gas and Kinetic Theory of Gases

Math Solution Ideal Gas and Kinetic Theory of Gases

Math Solution Ideal Gas and Kinetic Theory of Gases

Generally, when substances are heated, their particles begin to move faster. In solids, molecules vibrate together; heat makes them vibrate harder, and when the particles get hot enough, they vibrate together hard enough to break away from the molecule structure — this is called melting, like when ice melts into water.

In liquids, molecules tend to slide around each other; when they are heated, they start to bounce off of each other, and the liquid mass expands. If they bump off of each other hard enough, they too can break away from their molecule structure, and float about independently as a gas molecule — that’s called evaporation, like when you heat water and steam is produced.

Gas molecules tend to bounce off of each other; when they are heated, the gas mass expands because they bounce off of each other harder.

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]]>A static electric charge is created whenever two surfaces come into contact and separate, and at least one of the surfaces has a high resistance to electrical current (and is, therefore, an electrical insulator). The effects of static electricity are familiar to most people because people can feel, hear, and even see the spark as the excess charge is neutralized when brought close to a big electrical conductor (for example, a path to ground), or a region with an excess charge of the opposite polarity (positive or negative). The familiar phenomenon of a static shock–more specifically, an electrostatic discharge–is caused by the neutralisation of charge.

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There are two main types of Mathe Note of Waves. Mechanical Mathe Note of Waves propagate through a medium, and the substance of this medium is deformed. The deformation reverses itself owing to restoring forces resulting from its deformation. For example, sound Mathe Note of Waves propagates via air molecules colliding with their neighbours. When air molecules collide, they also bounce away from each other (a restoring force). This keeps the molecules from continuing to travel in the direction of the wave.

The second main type of wave, electromagnetic Mathe Note of Waves, do not require a medium. Instead, they consist of periodic oscillations of electrical and magnetic fields generated by charged particles, and can, therefore, travel through a vacuum. These types of Mathe Note of Waves vary in wavelength and include radio Mathe Note of Waves, microMathe Note of Waves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

Further, the behaviour of particles in quantum mechanics is described by Mathe Note of Waves, also know as vibrations, and researchers believe that gravitational Mathe Note of Waves also travel through space, although gravitational Mathe Note of Waves has never been directly detected.

A wave can be transverse or longitudinal depending on the direction of its oscillation. Transverse Mathe Note of Waves occurs when a disturbance creates oscillations perpendicular (at right angles) to the propagation (the direction of energy transfer). Longitudinal Mathe Note of Waves occurs when the oscillations are parallel to the direction of propagation. While mechanical Mathe Note of Waves can be both transverse and longitudinal, all electromagnetic Mathe Note of Waves are transverse.

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Every day examples are seen when the variable is time; for instance, the hands of a clock or the phases of the moon show periodic behaviour. Periodic motion is motion in which the position(s) of the system are expressible as periodic functions, all with the same period.

For a function on the real numbers or on the integers, that means that the entire graph can be formed from copies of one particular portion, repeated at regular intervals.

Periodic motion of some source object is necessary to produce a sustained musical sound (i.e., one with the definite pitch and quality). For example, to produce a standard musical A (440 Hz), the source object must sustain periodic motion at 440 vibrations per second with a tolerance of less than 1 Hz -the normal human ear can detect the difference between 440 Hz and 441 Hz. The conditions necessary for periodic motion are

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested both concerned students and teachers to spread this website home and abroad.

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Gravitation is one of the four fundamental interactions of nature, along with electromagnetism, and the nuclear strong force and weak force. In modern physics, the phenomenon of gravitation is most accurately described by the general theory of relativity by Einstein, in which the phenomenon itself is a consequence of the curvature of spacetime governing the motion of inertial objects. The simpler Newton’s law of worldwide gravitation provides an accurate approximation for most physical conditions including calculations as critical as spacecraft trajectory.

Gravitation is one of the four fundamental interactions of nature, along with electromagnetism, and the nuclear strong force and weak force. In modern physics, the phenomenon of gravitation is most accurately described by the general theory of relativity by Einstein, in which the phenomenon itself is a consequence of the curvature of spacetime governing the motion of inertial objects. The simpler Newton’s law of worldwide gravitation provides an accurate approximation for most physical conditions including calculations as critical as spacecraft trajectory.

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested both concerned students and teachers to spread this website home and abroad.

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Dynamics is a branch of physics (specifically classical mechanics) concerned with the study of forces and torques and their effect on motion, as opposed to kinematics, which studies the motion of objects without reference to its causes.

Generally speaking, researchers involved in dynamics study how a physical system might develop or alter over time and study the causes of those changes. In addition, Isaac Newton established the undergirding physical laws which govern dynamics in physics. By studying his system of mechanics, dynamics can be understood. In particular, dynamics is mostly related to Newton’s second law of motion. However, all three laws of motion are taken into consideration, because these are interrelated in any given observation or experiment.

The study of dynamics falls under two categories: linear and rotational. Linear dynamics pertains to objects moving in a line and involves such quantities as force, mass/inertia, displacement (in units of distance), velocity (distance per unit time), acceleration (distance per unit of time squared) and momentum (mass times unit of velocity). Rotational dynamics pertains to objects that are rotating or moving in a curved path and involves such quantities as torque, moment of inertia/rotational inertia, angular displacement (in radians or less often, degrees), angular velocity (radians per unit time), angular acceleration (radians per unit of time squared) and angular momentum (moment of inertia times unit of angular velocity). Very often, objects exhibit linear and rotational motion.

For classical electromagnetism, it is Maxwell’s equations that describe the dynamics. And the dynamics of classical systems involving both mechanics and electromagnetism are described by the combination of Newton’s laws, Maxwell’s equations, and the Lorentz force.

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested both concerned students and teachers to spread this website home and abroad.

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]]>Meaning: Surely, there is for you the best model in the life of Rasulullah (S), Sura: AlAhzab, Ayat21) Besides this, the excellent qualities of those great men who earned glory as noble men by following the path of the holy Prophet (S) and who inspired and encouraged mankind for the right path are also our ideals.

The traits of ideal lives: Two traits characterize such lives. Such as a) Positive (Acceptable) qualities and b) Negative (rejectable) qualities. Among the acceptable and positive qualities some are enumerated as under a) a happy combination of honesty, faithfulness, liberality, forbearance, b) Self-control, benevolence, charity, s thy, tolerance, humility and tenderness, c) Discipline.

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested concerned both students and teachers to spread this website home and abroad.

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]]>Meaning: Speak, O Prophet) He is Allah, one and only. He is not dependent on anyone, all are dependent on Him. He begets none, nor is He begotten. And there is none like unto Him (Sura: Ikhlas, Ayat: 1-4). Allah is a self-sufficient entity. He is without a beginning and without an end. He is everlasting and omnipresent. He is absolutely free from such needs as food, drink, sleep, drowsiness, fatigue etc.

The elementary issues of faith arc described in detail in the divine scriptures Al-Quran and the traditions of the Messenger of Allah (Sm.) The basic issues of faith have been comprehensively laid down in the formula of Iman Mufassal.

**teachingbd24.com** is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested concerned both students and teachers to spread this website home and abroad.

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