Physics 105: Mechanics Fall 2009 Homework 11 Due Friday 12/4
Read sections 10.7-10.8, 11.1-11.3 in the text. Do the following problems. 1. Do 10.P.41. Omit part (f). For parts (b) and (e), do the algebra to nd the ratio Kf /Ki . 2. Do 10.P.42. 3. Do 10.P.
Physics 105: Mechanics Fall 2009 Homework 10 Due Friday 11/20
Read sections 8.6-8.7, 9.1-9.6, and 10.1 - 10.6 the text. Do the following problems. 1. Do 8.P.24. 2. Do 8.P.26. 3. Do 8.P.28. 4. Do 8.P.30. 5. Do 8.P.22. 6. Do 9.RQ.14. 7. Do 9.P.20. 8. Consid
6.P.49 Human energy consumption (a) We will estimate the amount of energy required to lift the upper part of the body in a situp. Lets estimate that the upper part of the body (torso, head, and arms) has about half of the total mass M of the body, with M
Physics 105: Mechanics Fall 2009 Homework 9 Due Friday 11/6
Read sections 7.1 - 7.4 and 8.1 - 8.5 the text. Do the following problems. 1. Do 6.P.49. 2. Do 6.P.45. 3. Do 6.P.50. 4. Do 6.P.52. 5. Do 6.P.58. 6. Do 7.P.18. 7. Do 7.P.19. 8. Do 7.P.21. 9. Do 7.
5.P.73 Throwing from an asteroid (a) Use the GOAL scheme; Gather, Organize, Analyze, Learn: GATHER: Were looking for the speed the rock must have just after leaving your hand, such that it goes far away and has a speed of 3 m/s when it is very far away. N
Physics 105: Mechanics Fall 2009 Homework 8 Due Friday 10/30
Read sections 6.1 - 6.11 the text. Do the following problems. 1. Do 5.P.73. 2. Do 5.P.75. 3. Do 5.P.76. 4. Do 6.P.44. 5. Do 6.P.46. 6. Do 6.P.53. 7. Do 6.P.59. 8. (a) Draw an energy graph for th
Physics 105: Mechanics Fall 2009 Homework 7 Due Friday 10/23
Read sections 5.8-5.16 the text. Do the following problems. 1. Do 5.RQ.51. 2. Do 5.RQ.55. 3. Do 5.P.57. 4. Do 5.P.61. 5. Do 5.P.62. 6. Do 5.P.69. 7. Do 5.P.78. 8. Do 5.P.79. 9. In problem 8 of H
Physics 105: Mechanics Fall 2009 Homework 6 Due Friday 10/16
Read sections 4.13-4.16 and 5.1-5.7 the text. Do the following problems. 1. Do 4.HW.84. 2. Do 4.HW.91. 3. Do 4.HW.96. Vera Rubin is a Georgetown alumna. 4. Do 4.HW.98. 5. Do 4.HW.103. 6. Do 4.HW
Physics 105: Mechanics Fall 2009 Homework 5 Solutions
4.HW.78 I. Find the interatomic bondlength in Ti: The volume of the wire is V = (L)(R2 ) = (3m)( )(1.0 103 m)2 = 9.43 106 m3 . The mass of the wire is M = V = (4.51g/cm3 ) The mass of a single Ti atom
Physics 105: Mechanics Fall 2009 Homework 5 Due Friday 10/2
Read sections 4.5-4.13 in the text. Do the following problems. 1. Do 4.HW.78. 2. Do 4.HW.79. 3. Do 4.HW.80. 4. Do 4.HW.81. 5. Consider two springs, both with negligible mass. The relaxed lengths
Physics 105: Mechanics Fall 2009 Homework 4 Solutions
2.P.39 SYSTEM = two rocks SURROUNDING = nothing signicant All the speeds are in the range where 1.
ext ptot = Fnet t = 0
. Initial:
p1i = m1i v1i = (9kg) 4100, 2600, 2800 m/s = 36900, 23400, 25200 kgm/
Physics 105: Mechanics Fall 2009 Homework 4 Due Friday 9/25
Read sections 3.4-4.4 in the text. Do the following problems. 1. Do 2.P.39. 2. Do 2.P.45. 3. Do 3.RQ.27. 4. Do 3.RQ.28. 5. Do 3.P.40. 6. Two small balls with masses m1 = m2 = 2 103 kg have been r
Physics 105: Mechanics Fall 2009 Homework 7 Solutions
5.RQ.51 a. Same force applied over same distance same work done on each block. By the energy principle (ESY S = WSU RR ), this means the two blocks experience the same ESY S . The only type of energy t