Chapter 46623P46.6A proton has rest energy 938.3 MeV. The time interval during which a virtual proton could exist is atmost ∆tin ∆∆Et==2. The distance it could move is at mostctcE∆∆==×⋅××−−−=21055 103 1029383 16 10103481316...~JsmsJmejejaf.According to Yukawa’s line of reasoning, this distance is the range of a force that could be associatedwith the exchange of virtual protons between high-energy particles.P46.7By Table 46.2,Mcπ01352=MeV.Therefore,Eγ=67 5. MeV for each photonpEcc67 5eVandfEh×163 1022. Hz.P46.8The time interval for a particle traveling with the speed of light to travel a distance of 31015×−m is∆= =××=−−tdv001015823ms~.P46.9(a)∆=− −Emmmcnpe2From Table A-3,−=E1 008 665 1 007 825 931 50 782..bgafMeV .(b)Assuming the neutron at rest, momentum conservation for the decay process implies
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