(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

How much energy does an alpha particle need to penetrate the minimal protective epidermal layer of skin (Thickness ~7 mg cm^{-2}

2. Relevant equations

Possibly R=0.56E, E,4

OR R=1.24E-2.62, 4<E<8

3. 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 jsut not sure if I used to correct equation and am confused if the units match up.

Thanks for your help!

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# Radiation HW on Alpha Particles

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