The spacing between the parallel power lines is affected by
A) current-carrying capacities of wires.
B) electrical insulation.
C) the wing span of birds in the vicinity.
D) none of the above
Answer: C
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Consider a set of electrons with an initial spin state 
If we send these electrons into an SGx device, what is the probability a given electron will be determined to have its spin anti aligned with the +x direction?
A. 0
B. 1/4
C. 1/2
D. 
E. 1
Is there evidence of life on Mars?
A) Yes, at least at the time the Allen Hills Meteorite was formed, since it has fossils. B) Yes, but it is only in the form of microbes found by Viking landers. C) Yes, just found as fossils in the sedimentary rocks examined by Spirit. D) No, nothing suggesting life has ever been discovered. E) We have confusing and uncertain results to date.
A spaceship, traveling at WARP 1/2 away from the Earth, launches a shuttle moving away from the ship at c/2 (c/2 seen from the ship)
Classically one expects to see the shuttle moving at c from the Earth, but relativistically what speed do we expect seen from the Earth? A) 0.9c B) 0.5c C) 0.8c D) 0.7c E) 0.6c
Which of the following statements is true?
A. electric field lines stay inside equipotent surfaces B. equipotent surfaces intersect in straight lines C. equipotent surfaces intersect in curved lines D. electric field lines are perpendicular to equipotent surfaces E. equipotent surfaces are parallel to each other