April 27, 2015

Homework Help: Physics

Posted by Marissa on Thursday, April 30, 2009 at 8:17pm.

Here's the question I'm currently working on...

What initial kinetic energy must an α particle have if it is to approach a stationary lead nucleus to within a distance of 35.9 fm?

So I looked up a couple of things I thought we need for this problem. I have the atomic radius of lead, and I know that the charge of the particle is 2*e, where e is the elementary charge. I was thinking of approaching this using Coulomb's law, but couldn't figure out how to get from Force to Kinetic Energy! HELP!

Thank you SO MUCH!

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