After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field ...

After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of electrons in various directions and by observing the following: Electrons moving upward feel a magnetic force in the NW direction
 
  ; Electrons moving horizontally North are pushed down; Electrons moving horizontally South-East are pushed upward. He naturally concludes that the magnetic field at this landing site is in which direction? A) W
  B) SE
  C) NE
  D) SW
  E) E

Question 2

The planet Saturn is approximately 10 times farther away from the Sun than the Earth is. Given this, how much sunlight does it receive compared to the Earth?
 
  A) 1/1,000th
  B) 1/10,000th
  C) 1/100th
  D) 1/10th

Question 3

If you double the absolute temperature of an object, it will radiate energy
 
  A) 16 times faster.
  B) 4 times faster.
  C) 32. times faster.
  D) 8 times faster.
  E) 2 times faster.

Question 4

An iron barge 25. m long and 4.0 m wide has a mass of 100,000.kg. What minimum depth of water is needed to float it?
 
  What will be an ideal response?

Question 5

Three masses are positioned as follows: 2.0 kg at (0, 0); 2.0 kg at (2, 0); and 4.0 kg at (2,1). Determine the coordinates of the center of mass.
 
  What will be an ideal response?