A proton is confined to a space 1 fm wide. What is the minimum uncertainty in its velocity?

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  1. A proton is confined to a space 1 fm wide (about the size of the atomic nucleus).
    What is the minimum uncertainty in its velocity?
  2. Is it possible to determine an electron’s velocity accurate to 1.0 m/s while simultaneously finding its position to within ±1.0 μm?
    b. Is it possible to determine an proton’s velocity accurate to 1.0 m/s while simultaneously finding its position to within ±1.0 μm?
  3. An electron is trapped in a “quantum well” that confines it to a narrow region in one dimension. The electron’s minimum energy is 0.19 meV.What’s the width of the well?
  4. The Balmer series is a group of spectral lines resulting from the decay of an excited electron in a hydrogen atom to what atomic energy level?