Fe, which has an atomic mass of 54.938296 u decays with a half-life of 2.7 y to 
Mn, which has an atomic mass of 54.938047 u. Does this likely decay by a ?+ process (B), or must it decay by electron capture (E)?
B. ?+ process
E. must it decay by electron capture
E. must it decay by electron capture
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Radioactivity Basics: Rubidium 
Rb is a naturally occurring isotope that undergoes ?- decay. What isotope is the product of this decay?
A. 
Kr
B. 
Kr
C. 
Rb
D. 
Sr
E. 
Sr
Mercury is _______________ to the Sun, thus affecting its rotation
Fill in the blank(s) with correct word
Which of the following statements about black holes is true for an object falling into a black hole?
A) From an outside observer's viewpoint, the object falls quickly through the event horizon. B) From an outside observer's viewpoint, light from the object will become increasingly blueshifted as it approaches the event horizon. C) In the object's reference frame, the object will slow down as it falls and come to a stop just before it reaches the event horizon. D) Once the object crosses the event horizon, it can no longer communicate with anything outside the black hole.
A drinking glass has a diameter of 2.5 inches and is 5.5 inches tall. What is the volume of the drinking glass in cubic centimeters?
A) 170 cubic cm B) 440 cubic cm C) 350 cubic cm D) 710 cubic cm E) 530 cubic cm