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Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

In physics the desire of an object to keep doing what it is doing is termed?