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.
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.
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.