Answer: London dispersion forces (i.e LDF), also known loosely Van dear Waals forces.
Explanation: The London dispersion forces is named after the German - American physicist called Fritz London.
The London dispersion forces describes the interaction between two atoms A and B after London discovered the "quantum mechanical theory".
London dispersion theory is similar to the quantum mechanical theory of "light dispersion", that is why it is called "dispersion effect". In Physics,dispersion can be explained as the variation of a quantity with frequency, which is the fluctuation of the electrons in the case of the London dispersion.
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Answer:
Explanation:
Given
mass of object
Object is attached to the ceiling of an elevator by a rope
Suppose T is the Tension in the rope so
acceleration of the elevator (upward)
From Free Body diagram we can write as
It helps reduce the amount of carbon emissions released into the air
<span>An electrostatic precipitator is a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding(slowing down) the flow of gases through the unit.
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a device for removing small particles, as of smoke, dust, or oil, from a gas, as air, by passing the gas first through an electrically charged screen that gives a charge to the particles, then between two charged plates where the particles are attracted to one <span>surface.
</span>http://www.britannica.com/technology/electrostatic-precipitator