Help with Centripetal Acceleration

[Newton122]

please help:

The Bohr model of the hydrogen atom has the proton located in the nucleus with the electron orbiting it at a radius of 5.29 x 10^-11m.
a- What force does the electron experience due to the proton?
b- what is its centripetal acceleration

i already figured out part a which is 7.72 x 10^-8, but i have no idea how to find the centripetal acceleration

Please help

 

[ranger]

Do you know how to find the orbital velocity? Mayb you can think of Bohr's quantum condition.

 

[arunma]

Can you use Newton's Second Law to find centripetal acceleration? Unless you're in a quantum mechanics class, this problem is as easy as it looks (don't feel bad, a lot of us make the mistake of thinking too hard sometimes).