Which of the following is true of Population I stars?
A) They are usually found in the halo of our Galaxy.
B) They are usually found in globular clusters.
C) They are usually found in the central bulge.
D) They are usually found in the disk component of the galaxy.
D
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A galaxy with little cool gas or dust and no evidence of ongoing star formation is most likely a(n)
A) Seyfert. B) elliptical. C) irregular. D) spiral. E) barred spiral.
A construction worker pushes a wheelbarrow 5.0 m with a horizontal force of 50.0 N. How much work is done by the worker on the wheelbarrow?
a. 10 J b. 1250 J c. 250 J d. 55 J
If a white dwarf gains sufficient mass, it can become a:
A) brown dwarf. B) type II supernova. C) type I supernova. D) planetary nebula. E) black dwarf.
A 0.150-kg air track cart is attached to an ideal spring with a spring constant of 3.58 N/m and undergoes simple harmonic oscillations. What is the period of the oscillations?
A) 2.57 s B) 0.527 s C) 0.263 s D) 1.14 s E) 1.29 s