A Hydrogen atom consists of one electron and one proton. In an early, simple model of the hydrogen atom called the Bohr model, the electron is pictured as moving around the proton in a circular orbit with a radius ? = 5.29?10−11 m. a. What is the ratio of the magnitude of the electric force between the electron and proton to the magnitude of the gravitational attraction between them? (The electron has a mass ?? = 9.11 × 10−31 kg, and the proton has a mass ?? = 1.67 × 10−27 kg.)

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Chapter1: Units, Trigonometry. And Vectors
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A Hydrogen atom consists of one electron and one proton. In an early, simple model of the
hydrogen atom called the Bohr model, the electron is pictured as moving around the proton in
a circular orbit with a radius ? = 5.29?10−11 m.
a. What is the ratio of the magnitude of the electric force between the electron and proton to
the magnitude of the gravitational attraction between them? (The electron has a mass
?? = 9.11 × 10−31 kg, and the proton has a mass ?? = 1.67 × 10−27 kg.)

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