Lecture 1 homework, January 7, 2019

  1. Answer each of the following questions using a Fermi model. Be sure to cite any sources and explain your reasoning. Also, comment on your degree of certainty in your answer and discuss sources of uncertainty.

    1. What is worth more, 10 pounds of gold or 10 pounds of $100 bills?
    2. Assuming the fence below is made of steel, how much would the materials cost to build it across the length of the US-Mexico border? Proposed US-Mexico fence
    3. In Return of the Jedi, when Lando Calrissian is piloting the Millenium Falcon through the superstructure of the death star to get to its reactor core, how fast is the ship flying? (see this clip)
  2. Make your own Fermi model to show some scene in an adventure movie is actually unrealistic.