Homework

  • All text references to University Physics Vol. 3 , by openstax
Assignment 1. Due Tuesday September 26, 2017 at start of lecture.
  • Text Chapter 5 Problems 25, 33, 83, 84, 89 and 95. Note: of these problems HAND IN ONLY 84. For the rest check your answers in the student solution manual.
  • (To be handed in). A nova is the sudden, brief brightning of a star. Suppose Earth astronomers see two novas occur simultaneously, one in the constellation Orion and the other in the constellation Lyra. Both nova are the same distance from Earth, $2.5\times 10^3$ light years, and are in exactly opposite directions from Earth. Observers on board an aircraft flying at 1000 km/h on a line from Orion toward Lyra see the same novas but note that they are not simultaneous. Assume Earth is an inertial reference frame. (a) For the observers on the aircraft, how much time separates the novas? (b) Which one occurs first?
  • (To be handed in). Heide boards a spaceship and travels away from Earth at a constant velocity 0.45c toward Betelgeuse (a red giant star in the constellation Orion). One year later on Earth clocks, Heide's twin, Hans, boards a second spaceship and follows her at a constant velocity of 0.95c, in the same direction. (a) When Hans catches up to Heide, what will be the difference in their ages? (b) Which twin will be older?
Assignment 2. Due Friday October 6, 2017, AT 5:00pm in dropbox located opposite MC B210A.
  • Text Chapter 5 Problems 48, 52, 98, and 102 (Note: numbers refer to Text in downloadable .pdf format).
Assignment 3. Due Tuesday November 7, 2017, at start of lecture.
  • Text Chapter 6 Problems 130, 132, 143 and 156. (Note: numbers refer to Text in downloadable .pdf format).