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# Review problem. In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is $0.529 \times 10^{-10} \mathrm{m}$ . (a) Find the electric force exerted on each particle. (b) If this force causes the centripetal acceleration of the electron, what is the speed of the electron?

## a. $8.22 \times 10^{-8} \mathrm{N}$b. $2.19 \times 10^{6} \mathrm{m} / \mathrm{s}$

### Discussion

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##### Christina K.

Rutgers, The State University of New Jersey

##### Marshall S.

University of Washington

### Video Transcript

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##### Christina K.

Rutgers, The State University of New Jersey

##### Marshall S.

University of Washington