A heat engine is a machine that transforms thermal energy into mechanical work. Internal combustion engines, jet engines and steam turbines are some examples of heat engines. Heat is used by all of these engines to produce useful mechanical work. In this article, we will explore the heat engine efficiency and questions related to heat […]
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Class 11, Conservation of energy, IIT JEE, Physics, Work, Energy, and PowerIntroduction The nucleus of an atom splits into two lighter nuclei during nuclear fission. In some cases, the process occurs spontaneously, while in others, it is induced by excitation of the nucleus with a variety of particles (e.g., neutrons, protons, deuterons, or alpha particles) or electromagnetic radiation in the form of gamma rays. A large
Ventilation systems let warm air out of a building. Exhaust air heat pumps pick up the warm air, and heat fresh air coming into the building, or even heat water. Exhaust air heat pumps can be used to heat water, and heat houses or apartments. They work in the same way as air and ground
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Class 11, Conservation of energy, IIT JEE, Physics, Work, Energy, and PowerDissipation of energy involves how energy is wasted in a reaction or transformation. A form of energy that is not transferred or converted to useful energy is considered wasted because it is lost and dissipated to the surroundings. As we know, no system is perfect. When a system changes, energy is dissipated. This dissipated energy
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Class 11, Conservation of energy, IIT JEE, Physics, Work, Energy, and PowerIntroduction We know from the law of conservation of energy in a closed system, that is a system which is isolated from its surroundings, the total energy of a system is always conserved.” The conservative force obeys the law of conservation of energy. Conservative and non – conservative forces are the two types of forces.
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Class 11, Conservation of energy, IIT JEE, Physics, Work, Energy, and PowerUsing an air-source heat pump, heating and cooling your house is a great idea. It can give up to three times more thermal energy to a home than it takes in through electricity. It’s possible because a heat pump moves heat instead of making it from fuel, unlike a combustion heater. Air-source heat pumps have
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Class 11, Conservation of energy, IIT JEE, Physics, Work, Energy, and PowerWork and energy are intertwined. Work is the transmission of energy. In physics, work is defined as the transfer of energy from one thing to another. Also, energy is the ability to operate. A force is said to work when it causes displacement parallel to its action line. It involves force and movement in the
Work Energy Theorem and Power Introduction We all are familiar with the term work, but it means something different in physics. In physics, work is the application of force required to move an object. The work-energy principle is among the basic principles of physics. Work energy theorem is also an integral part of physics. Let’s
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Class 11, IIT JEE, Physics, Work-energy theorem, Work, Energy, and PowerAccording to the work-energy theorem, the change in the kinetic energy of a body is similar to the network done by the forces acting on it. The work-energy theorem can also be derived from Issac Newton’s second law. To state the work-energy theorem, we also need to understand the concept of work and energy. Both
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Class 11, IIT JEE, Physics, Work-energy theorem, Work, Energy, and PowerIntroduction We all are familiar with the term ‘work’; However, work is related to energy in scientific terms. Energy is transferred from one form to another when work is done. The product of the force and displacement leads us to the formula of work, which is: W = (F cos θ) d Work In physics,
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Class 11, IIT JEE, Physics, Work-energy theorem, Work, Energy, and Power