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coulomb law predicts that the force exerted by one point charge on another is proportional to the product of the two charges.how might you go about testing this aspect of law in the laboratory?
By changing one charge while keeping other things constant and seeing if the force is proportional to it.
Expert answered|humble.swan|Points 61|
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Asked 2/16/2013 2:05:45 AM
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if electrons in a metal such as copper are free to move about, they must often find themselves headed toward the metal surface.why dont they keep on going and leave the metal?
Weegy: They don't have enough energy to climb the potential barrier at the surface (unless you excite them with UV or something). [ Thermal energy is not enough. Anyway, if enough did leave due to random thermal fluctuations giving some more energy, the metal would become positively charged which would attract them back. The only thing they can do is to install filters so that when the dunes hit they will be absorbed by the protection shield. ] (More)
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