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

For a nucleus of A=220, estimate very roughly how many nucleaons would be at the surface.

2. Relevant equations

R_{0}=1.5 x 10^{-15}

r=A^{1/3}x R_{0}

3. The attempt at a solution

Using the formulas, I calculated R to be 7.2441729 x 10^{-15}

The book says that the number of nucleons at the surface and the total number of nucleons has a ratio of ~1/r

1/r= 1.3804 x 10^{14}

I tried the following:

1.3804 x 10^{14}= 220/x

which didn't make sense...

what am I doing wrong?

Thanks!

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# Homework Help: Nuclear physics - number of nucleons on surface?

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