1111_Physics ProblemsTechnical Physics

# 1111_Physics ProblemsTechnical Physics - 452 Relativity...

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452 Relativity Additional Problems P39.56 (a) dv tv t earth earth astro == γ so 200 10 1 1 30 0 6 22 .. ×= yr yr ej cv vc 1 1 50 10 2 2 5 −= F H G I K J × v c v c . 1 225 10 2 2 21 0 2 × v c v c . 11 2 2 5 1 0 2 2 10 =+ × v c . so v c × =− × 1 2 25 10 1 1 2 10 12 10 e j v c × 1 112 10 10 . (b) K mc = F H G G I K J J = × F H G I K J × 1 1 1 1 1 000 1 000 3 10 6 00 10 2 6 8 2 27 . . yr 30 yr kg m s J bg b g (c) 6 00 10 6 00 10 13¢ 3600 17 10 27 27 20 h \$2. × F H G I K J F H G I K J F H G I K J F H G I K J J J kWh k 10 Ws s 3 P39.57 (a) 10 1 13 2 MeV mc p so = 10 10 p ′= = = t t 10 10 10 5 52 yr 10 yr s 10 ~ (b) ′= ′ dc t ~10 8 km P39.58 (a) When KK ep = , ee pp γγ . In this case, e 2 0511 = . M e V , p 2 938 = MeV and e = 1 0 750 1 511 9 2 af . Substituting, p p = 1 1 1 0 511 1 511 9 1 938 1000279 2 2 a f . MeV MeV but p p uc = L N M O Q P 1 1 2 . Therefore, c =−= 10 0 2 3 6 2 (b) When = ppp e mu = or e p u m = . Thus, u cc c c ×
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