each of the electrons in a particle beam has a kinetic energyof 1.60x10 -17 J. A

Question

each of the electrons in a particle beam has a kinetic energyof 1.60x10-17J. A)what is the magnitude of the uniform electric field pointingin the direction of the electrons movement that will stop theelectrons in a distance of 10.0 cm? b) after the electron stop what will they do? each of the electrons in a particle beam has a kinetic energyof 1.60x10-17J. A)what is the magnitude of the uniform electric field pointingin the direction of the electrons movement that will stop theelectrons in a distance of 10.0 cm? b) after the electron stop what will they do?

Explanation / Answer

We know that          Workdone =KE           F x =KE           E * q* x = KE   (where F = Eq)    ==> E = KE / q * x    = 1.60 x10-17 / 1.6 x 10-19 * 10 x10-2               = 1 x 10-16 N/C

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