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cconradi
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Homework Statement
How much energy does an alpha particle need to penetrate the minimal protective epidermal layer of skin (Thickness ~7 mg cm-2
Homework Equations
Possibly R=0.56E, E,4
OR R=1.24E-2.62, 4<E<8
The Attempt at a Solution
I used the equation R=0.56E
so, I said that:
7 mg/cm^2=0.56E
then divided by 0.56 to get E=12.mEV
I guess I'm just not sure if I used to correct equation and am confused if the units match up.
Thanks for your help!