You and your friend, who has the same mass as you, want to go to ...

[ssal]

You and your friend, who has the same mass as you, want to go to the top of the Eiffel Tower. Your friend takes the elevator straight up. You decide to walk up the spiral stairway, taking longer to do so.
 
  Compare the gravitational potential energy of the system you-Earth and your friend-Earth, after you both reach the top. A) It is impossible to tell, since the times you both took are unknown.
  B) It is impossible to tell, since the distances you both traveled are unknown.
  C) The friend-Earth system's gravitational potential energy is greater than the you-Earth system's gravitational potential energy, because he got to the top faster.
  D) Both systems have the same amount of gravitational potential energy at the top.
  E) The you-Earth system's gravitational potential energy is greater than the friend-Earth system, because you traveled a greater distance in getting to the top.

Question 2

Which of the following is most likely to encourage nuclear weapons proliferation?
 
  A) mining of uranium
  B) mass production of frozen pizza.
  C) recycling of plutonium
  D) fabrication i.e., production of reactor fuels pellets and fuel rods
  E) storage of used nuclear fuel rods

[pratush dev]

Answer to Question 1

D

Answer to Question 2

C