Conservation laws, Physics

conservation laws

A law that states that, in a closed system, the whole quantity of something will not enhance or reduce, but exactly remain the same; i.e., its rate of alteration is zero. For physical quantities, it states that something can neither be created nor destroyed. Mathematically specking, if a scalar X is the quantity assumed, then

dX/dt = 0,

or, equivalently,

X = constant.

For a vector field F, the conservation law is written as following

div F = 0;

that is, the vector field F refer to divergence-free everywhere (that has no sources or sinks).

Some particular examples of conservation laws are following:

conservation of mass-energy

The overall mass-energy of closed system remains constant.

conservation of electric charge

The overall electric charge of any closed system remains constant.

Conservation of linear momentum

The overall linear momentum of any closed system remains constant.

Posted Date: 3/28/2013 1:40:51 AM | Location : United States







Related Discussions:- Conservation laws, Assignment Help, Ask Question on Conservation laws, Get Answer, Expert's Help, Conservation laws Discussions

Write discussion on Conservation laws
Your posts are moderated
Related Questions
Explain the Transmission of Heat Transmission of heat (movement of heat from the hotter item to the colder item) can be brought about three ways: by conduction, convection, and

Is a sewing needle magnetic or non magnetic? Answer:- When you purchase it in the store it isn't magnetized but if you rub it with a magnet it becomes magnetic.


prove - w2=w0+2alpha(thita-thita0)

what condition is necessary for heat transfer occur

The Monkey and Zookeeper There is an attractive monkey down at the zoo. The monkey spends most of its day execution from a limb of a tree. The zookeeper feeds the monkey throug


Free-particle A.  Suppose that the wavefunction for a free-particle is given by the wavefunction Find the value of A that normalizes Ψ (x). B.  The Hamiltonian oper

The Coriolis effect is a deflection of moving objects when they are reflects in a rotating reference frame. In a reference frame with clockwise rotation, the deflection is to the l

Determine the change in entropy, in joules, when 5 moles of an ideal gas expands from a value of 4 lits. to 40 lits. at 27°C. (R = 8.314 JK -1 mol -1 )