An electron is released from rest in a weak electric field

Chapter , Problem 54

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QUESTION:

An electron is released from rest in a weak electric field given by After the electron has traveled a vertical distance of what is its speed? (Do not neglect the gravitational force on the electron.)

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QUESTION:

An electron is released from rest in a weak electric field given by After the electron has traveled a vertical distance of what is its speed? (Do not neglect the gravitational force on the electron.)

ANSWER:

Step 1 of 3

Given data:

  • The field is .
  • The distance is .
  • The initial speed of the electron is .
  • The mass of the electron is .
  • The electrical force acting on the electron is,

                                                         

    Here q is the electron charge, and its value is .

    The gravitational force on the electron is expressed as,

                                                             

    Here g is the gravitational acceleration, and its value is .

    The expression of the net force is expressed as,

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