An electron starts from rest 27.0 cm from a fixed point chargewith Q = -8.00 nC .
How fast will the electron be moving when it is very faraway?
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Many chemical reactions release energy. Suppose that at thebeginning of a reaction, an electron and proton are separated by0.135 nm , and their final separation is 0.101 nm .
How much electric potential energy was lost in this reaction (inunits of eV)?
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A 0.21-F capacitor is desired. What area must the plates have ifthey are to be separated by a 3.2-mm air gap?
