A 6.00 kg mass is located at (2.00 m, 2.00 m, 2.00 m) and a 5.00 kg mass is located at (–1.0 m, 3.00 m,–2.00 m). If this system of masses rotated about the Y-axis perpendicular to the Z-X plane, then the moment of inertia of this system is
A. 73 kg 
B. 66 kg
C. 60 kg
D. 55 kg
E. 48 kg
A. 73 kg
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Consider the space time diagram below. Let the space time interval between events O and A be ?sOA, and let the space time interval between events O and B be ?sOB Which of these two space time intervals is larger? (Assume that the y and z coordinates of all these events are zero.)
A. 
B. 
C. 
D. There is no way to tell from this diagram.
To a reasonable approximation, the density of a nucleus
A) varies unpredictably for different values of Z. B) is independent of the mass number. C) is greater for large-Z nuclei. D) is smaller for large-Z nuclei.
The accurate determination of star distances by the method of standard candles requires accurate knowledge of the ________ of the standard candle.
A. temperature B. luminosity C. size D. speed
The ancient Greeks noted that the planets
A) kept step with the stars. B) were a reddish color. C) wandered around among the stars. D) moved in ellipses around the sun. E) Nonsense--the Greeks didn't know anything about the planets.