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An oversimpliefied model of the hydrogen atom has the electron orbiting the nucleus's proton at a distance of approximately 5.29x10^-11 m. If the electron's speed is about 2.2x10^6 m/s then

A) how much force is needed to keep the electron in a circular orbit?

B) Using the results from problem 3-12, compare the requred force with the gravitational force of attraction. What does this result imply?

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