1. The problem statement, all variables and given/known data A proton is known to lie within the nucleus of a gold atom. The radius of a gold nucleus is approximately 6 fm. What is the minimum uncertainty in the proton’s velocity [you may treat the problem as one-dimensional and you should express your answer as a fraction of c]. 2. Relevant equations ΔxΔp ≥ ħ/2 3. The attempt at a solution I think I got this, but Chegg is showing up weird inconsistent answers. I just want to make sure my logic is sound: So since we can treat this one dimensionally, we know that the proton lies within a 6fm range. For simplicity, we can (in our imaginations) draw a 6 fm line and put a point on the center. On that center, our uncertainty of the position of the proton is ± 3 fm. So our Δx should be 3fm instead of 6 fm! The rest of the work is rather simple, I just want to make sure I'm setting this up properly.