Answers: 2
= separation between the plates = 4.9 mm = 0.0049 m 
= Potential difference between the plates = 57 Volts 
= magnitude of charge on proton = 1 e
= Kinetic energy of the proton 
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Aparallel-plate capacitor with a 4.9 mm plate separation is charged to 57 v . part a with what kinet...
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