1282_Physics ProblemsTechnical Physics

# 1282_Physics ProblemsTechnical Physics - 623 Chapter 46...

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Chapter 46 623 P46.6 A proton has rest energy 938.3 MeV. The time interval during which a virtual proton could exist is at most t in ∆∆ Et = = 2 . The distance it could move is at most ct c E == ×⋅ × × = 2 1055 10 3 10 29383 16 10 10 34 8 13 16 . .. ~ Js ms J m ej e j af . According to Yukawa’s line of reasoning, this distance is the range of a force that could be associated with the exchange of virtual protons between high-energy particles. P46.7 By Table 46.2, Mc π 0 135 2 = MeV . Therefore, E γ = 67 5 . M eV for each photon p E c c 67 5 eV and f E h × 163 10 22 . H z . P46.8 The time interval for a particle traveling with the speed of light to travel a distance of 31 0 15 × m is ∆= = × × = t d v 0 0 10 15 8 23 m s ~ . P46.9 (a) ∆= − − Emmm c npe 2 From Table A-3, = E 1 008 665 1 007 825 931 5 0 782 . . bg a f MeV . (b) Assuming the neutron at rest, momentum conservation for the decay process implies
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