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Physics

posted by on .

An electron and a proton are each placed at
rest in an electric field of 363 N/C.
What is the velocity of the electron 76.1 ns
after being released? Consider the direction
parallel to the field to be positive. The elementary charge is 1.60218 × 10
−19
C and the
mass of an electron is 9.10939 × 10
−31
kg .

  • Physics - ,

    The acceleration of the electron is
    a = e*E/m = 6.38*10^13 m/s^2

    After time t, the speed is (1/2) a t^2.

    In your case, t = 76.1*10^-9 s

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