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1. The problem statement, all variables and given/known data

In the Bohr model of the hydrogen atom, an electron circles a proton at a radius of 5.3e-11 m. How fast must the electron be moving if the centripetal acceleration is to be supplied by Coulombic attraction?

2. Relevant equations

L=n(h/2pi) where h is plancks constant and n is an integer

L=rmv

3. The attempt at a solution

n(h/2pi)=rmv

v=n(h/2pi)/(rm)

v= n(6.63e-34/2pi)/(5.3e-4)(9.11e-31)

v= 0.218n m/s

Now that velocity seems way to small for a speed of an electron....

Any help is appreciated! Thanks!

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# Homework Help: Speed of electrons

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