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**1. Through what potential difference ([tex]\Delta[/tex]V) would you need to accelerate an alpha particle, starting from**

*rest*, so that it will just reach the surface of a 15 x 10^(-15) m [tex]^{238}[/tex]U nucleus?**2. KE = q[tex]\Delta[/tex]V**

E = [tex]\gamma_{p}[/tex]mc²

r = [tex]\frac{mv}{qB}[/tex]

**3. Ok, I feel like I am close to what I really need but I am lacking something...**

You can get the charge (q) and mass for both the particle and the U nucleus from the information given, you can also get the radius of the nucleus if needed.

I have that, I just seem to have two unknowns for every equation I am using, if I solve for u in E = [tex]\gamma_{p}[/tex]mc² I don't know Energy, and if I solve for v or B in

r = [tex]\frac{mv}{qB}[/tex] I don't know one of them, what am I missing?

You can get the charge (q) and mass for both the particle and the U nucleus from the information given, you can also get the radius of the nucleus if needed.

I have that, I just seem to have two unknowns for every equation I am using, if I solve for u in E = [tex]\gamma_{p}[/tex]mc² I don't know Energy, and if I solve for v or B in

r = [tex]\frac{mv}{qB}[/tex] I don't know one of them, what am I missing?