Stars in globular clusters belong to Population ________.
A. I
B. II
C. III
D. Zero
Answer: B
Physics & Space Science
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Moment of Inertia: A triatomic molecule is oriented as follows along the x-axis: mass m is at the origin, mass 2m is at x = a, and, mass 3m is at x = 2a. What is the moment of inertia of this molecule about the y-axis?
A. 2ma2 B. 3ma2 C. 12ma2 D. 14ma2
Physics & Space Science
Compared with the mass of a uranium nucleus before splitting, the split fragments have
A) less mass. B) the same mass. C) more mass.
Physics & Space Science
At least ________ % of stars host at least one planet
A) 70 B) 1 C) 10 D) 30
Physics & Space Science
An electron in a rigid box is in the ground state. The system absorbs a 9-eV photon putting the electron in the n = 2 state. What is the width of the box?
A) 1.8 × 10-10 m B) 1.5 × 10-10 m C) 2.5 × 10-10 m D) 2.0 × 10-10 m E) 3.5 × 10-10 m
Physics & Space Science