problem08_87

University Physics with Modern Physics with Mastering Physics (11th Edition)

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8.87: Let the proton be moving in the + x -direction with speed p v after the decay. The initial momentum of the neutron is zero, so to conserve momentum the electron must be moving in the x - -direction after the collision; let its speed be . e v x P is constant gives 0 = e e v m - + . p p v m e v = (
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Unformatted text preview: e p m m ) v p The total kinetic energy after decay is tot K = 2 2 1 e e v m + 2 2 1 p p v m . Using the momentum equation to replace e v gives tot K = 2 2 1 p p v m ( 1+ ). e p m m % 0544 . 10 5.44 1836 1 1 1 Thus 4 p tot = = = + =-e p m m K K...
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