Answers to the First Midterm

  1. False
  2. False
  3. True
  4. False
  5. True
  6. True
  7. True
  8. False (we wouldn't be here if there were)
  9. False
  10. False (proton is 2000 time more massive)
  11. False
  12. True
  13. False (the earth is 4.5 billion yards old)
  14. False (its decreasing due to gravity)
  15. False (of course)
  16. False (does not describe the orbit of mercury)
  17. False
  18. True
  19. False
  20. True (very important observations)
  21. True (of course it does)
  22. False (its 3 degrees)
  23. C
  24. E
  25. B
  26. A
  27. D
  28. E
  29. A
  30. N
  31. C
  32. E
  33. D
  34. B
  35. A
  36. E
  37. C
  38. B
  39. D (photons have an energy related mass)
  40. D
  41. B
  42. C (full credit for D as well)
  43. C
  44. D (protons are more massive)
  45. B (1/2 credit for E though)
  46. E (that's the manifestation of uniform expansion)
  47. B (stressed repeatedly in lecture)
  48. B (it peaks in the microwave now but not at earlier times)
  49. C
  50. C
  51. C
  52. E (1/2 credit for either a or c)
  53. C
  54. A or B