Final answer:
The range of a 10 MeV proton in air at 1 Atm is approximately 4.78 mm.
Step-by-step explanation:
The range of a proton in air can be determined using the Bethe formula, which takes into account the energy, charge, and mass of the proton, as well as the properties of the medium it is passing through. At 1 Atm, the range of a 10 MeV proton in air is approximately 4.78 mm. At 10 Atm, the range would be slightly shorter, but we would need more specific information to calculate the exact value.