If a neutral metal object has been charged by friction to a charge of one pC, what has happened to it electrically?
a. 
electrons have been added to it
b. 
protons have been added to it
c. 
electrons have been removed from it
d. 
protons have been removed from it
e. 
c.
electrons have been removed from it
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A) an imbalance in energy. B) a separation of electrical charge within the cloud. C) air expansion. D) rising warm updrafts.
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