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Electric charge is a physical property of matter that causes it to experience a force when near other electrically charged matter. There exist two types of electric charges, called positive and negative. Positively charged substances are repelled from other positively charged substances, but attracted to negatively charged substances; negatively charged substances are repelled from negative and attracted to positive.
When a body is heated, it expands in terms of area, length & temperature and volume rises. In a solid, molecules may only have thermal agitation. As temperature of a object enhance
How many types of hologen and gas discharge are there? This will depend upon the use of the system. Gas discharge lamps, particularly those with a very small plasma area are pr
Q. What are non-polar molecules? Give an example. i) A non-polar molecule is one in that the centre of gravity of the positive charges coincides with the centre of gravity of
In which direction does air exert maximum pressure?
to calculate average speed, divide distance by time?
what is sound wave
working model needed.........please help!!!!!!!!!!!!
Permeability of free space; magnetic constant; mu_0 The ratio of the magnetic flux density in a substance is to the external field strength for vacuum. This is equal to 4 pi x
types of friction
State 'Inverse square law of magnetism'. A. Coulomb's inverse law of magnetism states that, "The force of attraction or repulsion between two magnetic poles is directly pro
Charge of a particle is that property due to which it takes part in electrodynamic interactions
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