physics

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In the Bohr model of the atom, the ground-state electron in hydrogen has an orbital speed of 2190 km/s.The mass of an electron is 9.11×10−31kg. What is its kinetic energy?

  • physics -

    what is 1/2 mass*velocity^2 ?
    change km/s to m/s

  • physics -

    13,6ev

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