1. The problem statement, all variables and given/known data A proton is confined in a uranium nucleus of radius 7.41 fm. Determine the proton's minimum kinetic energy K less than or equal to delta K according to the uncertainty principle if the proton is well approximated by a Gaussian wave packet confined by the nuclear diameter. 2. Relevant equations change in momentum * change in x is greater than or equal to h(bar)/2 I don't know 3. The attempt at a solution I found the minimum change in momentum but can't seem to relate that to the minimum KE. I tried change KE= change in p*c but that was wrong. since it is confined by the diameter do I times the radius by 2? Thats how I did it. dx=14.82E-15 m h(bar)/2=1.0546E-34/2=5.273E-35 5.273E-35/14.82E-15= 3.54E-21 3.54E-21*3E8= 1.0674E-12 J But this is wrong and I don't have a clue as to why. Can someone help me out please?