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Coloradoeduphysicsphys2010phys2010sp14examshtml 352014

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Unformatted text preview: v2/R. PHYS- 2010 3 Announcements •  •  •  •  •  Read Giancoli Chapter 5. No [email protected] homework this week! CAPA # 8 is due next Tuesday. Midterm II tomorrow, Thursday, March 6, at 7:30 pm. Exam sea:ng: –  if your TA is Rosemary Wulf or Andrew Hess, your exam is here, G1B30. –  if your TA is Jake Fish or Clarissa Briner, your exam is next door, G1B20. •  More details about the exam are on the course website: h^p://www.colorado.edu/physics/phys2010/phys2010_sp14/exams.html 3/5/2014 PHYS- 2010 4 Room Frequency BA Clicker Ques:on The Earth circles the Sun at an average distance of 1 AU = 1.5 x 1011 m in 1 year. E r = 1 AU τ = 365 days 3/5/2014 What’s causing the centripetal accelera>on? A)  The electrosta>c force between the Earth and Sun. B)  The tension in the string connec>ng the Earth to the Sun. C)  The force of gravity between the Earth and the Sun. D)  Depends on the >me of day. PHYS- 2010 5 Newton’s Law of Universal Gravita:on Insight: what keeps the Moon in orbit around the Earth and the Earth in orbit around the Sun is exactly the same thing that causes an “apple to fall from a tree”. “Every par:cle in the universe [email protected] every other par:cle.” 3/5/2014 PHYS- 2010 6 Ne...
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