Law of conservation of mass and energy ppt

  • law of conservation of mass ppt SCI 10 LAW OF CONSERVATION OF MASS.ppt — PowerPoint presentation, 1502 kB (1538560 bytes) Document Actions
Energy conservation is a very important part of energy planning and its management. It not only saves energy resources for future, avoids wasteful utilisation of energy, provides solution to energy crisis and ensures higher per capita availability/ consumption but controls environmental degrada­tion and pollution.

The total momentum of a closed system is constant. This principle is known as the law of conservation of momentum (often shortened to the conservation of momentum or momentum conservation). When objects interact, their total momentum before the interaction is the same as after the interaction. ∑p before = ∑p after

  • F=ma is good but not always correct. A better definition of Newton's 2nd Law is to say that the force is directly proportional to the rate of change of momentum and acts in the same direction (this last part is really important). This covers examples where the mass or acceleration may not remain constant.
  • The energy equivalent of the destroyed mass appears as gamma ray energy 2m e c 2. For macroscopic systems—i.e., those composed of objects massive enough for their atomic structure to be discounted in the analysis of their behaviour—the conservation law for energy assumes a different aspect.
  • With respect to classical physics, conservation laws include conservation of energy, mass (or matter), linear momentum, angular momentum, and electric charge. With respect to particle physics, particles cannot be created or destroyed except in pairs, where one is ordinary and the other is an antiparticle.

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    No mass can cross a system boundary. A control volume is a region in space chosen for study. Mass can cross a control surface (the surface of the control volume). The fundamental conservation laws (conservation of mass, energy, and momentum) apply directly to systems.

    Theories Laws and Observations Hot gases emit light because of electronic transitions All bodies fall at the same rate Matter is conserved because atoms are indestructible The heat capacity of water is 4.184 J / g oC Coulomb’s Law Planets orbit the sun because all masses have an attractive force for each other.

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    Piping and pump systems that are in parallel will have a different effect on flow rate and pressure then piping systems that are in series. In either case, the continuity equation and Bernoulli’s equation can be used to describe the change in pressure or flow rate. Pipes & Pumps in Series Piping that is in … Continue reading "Pumps Series and Parallel"

    This denotes that the potential energy of the object of mass m at a height h converts into kinetic energy as soon as it falls on the ground. As the force acting on an object situated at a height is against the gravitational force from earth, the potential energy in that object behaves as a negative constraint.

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    Centre of mass of a two-particle system, momentum conservation and centre of mass motion. Centre of mass of a rigid body; centre of mass of a uniform rod. Moment of a force, torque, angular momentum, laws of conservation of angular momentum and its applications.

    Conservation of Momentum Momentum is conserved in every isolated system. Conservation of Momentum Another way to think about it is: Internal forces can never change the total momentum of a system. Conservation of Momentum In practice, for any event in an isolated system: Momentumafter = Momentumbefore The End.

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    1. Given vinegar and baking soda along with specific directions, students prove the Law of Conservation of Mass. 2. Given Alka-Seltzer and a flask, students design and conduct an experiment to prove the Law of Conservation of Mass. The law of conservation of mass indicates that mass cannot be created nor destroyed. This

    This is very similar to the law of conservation of energy, which states that; “The total amount of energy in an isolated system remains constant over time.” Another common consequence of these two laws is that both mass and energy can neither be created nor destroyed, they can only be transformed from one state to another.

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    The conservation laws states that particular measurable properties of an isolated physical system does not change as the system evolves. Conservation of energy (including mass) Fluid Mechanics and Conservation of Mass - The law of conservation of mass states that mass can neither be created or destroyed.

    Nov 13, 2013 · Law of Conservation of Matter 1. The Law of Conservation of Matter 2. Mass Let’s examine this chair. It has a mass of 39 kg and weight of 86 lbs. (So, kind of heavy) Where does this mass come from? 3. Mass It is made up of many parts: Wood 29 kg Nails 1 kg Stuffing 1 kg Cushion 3 kg Cloth 5 kg -----39 kg

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    Mass and Energy Balances In this chapter we will apply the conservation of mass and conservation of energy laws to open systems or control volumes of interest. The balances will be applied to steady and unsteady system such as tanks, turbines, pumps, and compressors. 4.1 Conservation of Mass The general balance equation can be written as

    Law of Conservation of Energy. The law of conservation of energy is one of the basic laws of physics along with the conservation of mass and the conservation of momentum. The law of conservation of energy states that energy can change from one form into another, but it cannot be created or destroyed.Or the general definition is: The total energy of an isolated system remains constant over time.

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    Energy conservation. Mechanical energy balance; Bernoulli equation and energy applications; Minor loss, kinetic energy correction factor; Flow measuring devices; Major loss in pipe flow; Examples on Bernoulli equation; Centrifugal pump: characterisitcs, efficiency, NPSH; Flow at low and high Reynolds numbers. Creeping flow, Stokes-law and ...

    What isn’t matter? Anything that does not have mass or take up space. Examples: heat, light, emotions, thoughts, ideas Law of Conservation of Matter Matter is not created nor destroyed---it only changes form. Law of Conservation of Mass Mass is neither created nor destroyed in a chemical reaction.

C:\Adata\CLASNOTE\483\483 in 09\MASS BALANCES.doc MASS BALANCES This document reviews mass balances. Mass balance equations are formal statements of the law of conservation of mass, and it is no exaggeration to think of them as the “F = ma” of environmental engineering. They represent the starting point, either explicitly or implicitly, for
Mar 18, 2002 · The mass of the p o has been converted into kinetic energy (KE). In other words, mass is a form of energy, E = mc 2, often called the rest mass energy (RME). Now, the conservation of energy takes the following form: KE i + RME i = KE f + RME f. In this example KE i = 0. Note, potential energy need not be considered because the initial and final ...
This chemistry video tutorial discusses the law of conservation of mass and provides examples associated with chemical reactions. The conservation of mass i...
Law of Conservation of Matter 1. The Law of Conservation of Matter 2. Mass Let's examine this chair. It has a mass of 39 kg and weight of 86 lbs. (So, kind of heavy) Where does this mass come from? 3. Mass It is made up of many parts: Wood 29 kg Nails 1 kg Stuffing 1 kg Cushion 3 kg Cloth 5 kg -----39 kg