ch2 - 31 Chapter 2 Relativity II 2-1 2-2 2-3(a(b(c(d...

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Unformatted text preview: 31 Chapter 2 ! Relativity II 2-1. 2-2. 2-3. (a) (b) (c) (d) Chapter 2 ! Relativity II 32 2-4. The quantity required is the kinetic energy. (a) (b) (c) 2-5. Because work is done on the system, the mass increases by this amount. 2-6. (Equation 2-5) (a) Thus, (b) Thus, (c) Thus, 2-7. (a) (b) (Equation 2-9) Chapter 2 ! Relativity II 33 (Problem 2-7 continued) (c) (d) Classically, % error = 2-8. (Equation 2-9) Or (a) (b) (c) 2-9. (Equation 2-10) (a) Because E >> mc 2 , (Equation 2-40) (b) (Equation 2-36) (c) Assuming one Au nucleus (system S ) ) to be moving in the + x direction of the lab (system S ), then u for the second Au nucleus is in the ! x direction. The second Au’s energy measured in the S ) system is : Chapter 2 ! Relativity II 34 (Problem 2-9 continued) 2-10. (a) (b) so, . (c) , so 1 g of dirt will light the bulb for: 2-11. (Equation 2-10) where (Equation 2-9) (Equation 2-32) Chapter 2 ! Relativity II 35 2-12. (Equation 2-10) (a) (b) (Equation 2-32) 2-13. (a) (b) (From Equation 2-32) 2-14. (a) (b) Chapter 2 ! Relativity II 36 (Problem 2-14 continued) 2-15. (a) (b) It would make no difference if the inner surface were a perfect reflector. The light energy would remains in the enclosure, but light has no rest mass, so the balance reading would still go down by 21 : g. 2-16. 2-17. Energy to remove the n 2-18. (a) (b) Chapter 2 ! Relativity II 37 2-19. (a) (b) (c) 2-20. 2-21. Conservation of energy requires that or and conservation of momentum requires that so Thus, is the minimum or threshold energy E t that a beam proton must have to produce a B . 2-22. Chapter 2 ! Relativity II 38 2-23. Conservation of momentum requires the pions to be emitted in opposite directions with equal momenta, hence equal kinetic energy. 5 rest energy = 497.7 MeV . B + and B !!...
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This note was uploaded on 04/03/2008 for the course PHYSICS 7C taught by Professor Lin during the Spring '08 term at Berkeley.

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ch2 - 31 Chapter 2 Relativity II 2-1 2-2 2-3(a(b(c(d...

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