What is in the box shown below? 
A. Positive charge
B. Negative charge
C. Zero charge
D. One cannot determine the charge’s sign from this diagram.
B. Negative charge
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Study this H-R diagram. Which of the following stars has (or had) the longest hydrogen fusing lifetime? (The red arrows help you locate these stars on the diagram.)
A) Barnard's star B) Alpha Centauri B C) Betelgeuse D) the Sun
If the Moon rises around 3 A.M., its phase must be
A) full. B) first quarter. C) third quarter. D) waning crescent. E) waxing crescent.
The satellite most critical to the study of the formation and structure of the universe is ________, which detected the ripples that led to galaxies
A) WMAP B) Fermi C) Planck D) HST E) COBE
For this situation, I push on a heavy chair.Suppose I push lightly on the chair, and the chair doesn't move at all. Then the strength of the force the chair exerts on me is
a. less than the force I exert on the chair. b. equal to the force I exert on the chair. c. greater than the force I exert on the chair. d. zero.