A merger between two large galaxies of comparable size will most likely produce:
A) two small elliptical galaxies.
B) a large elliptical galaxy.
C) a small elliptical galaxy and a small spiral galaxy.
D) a large spiral galaxy.
E) a small elliptical galaxy and a large spiral galaxy.
B
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Approximately what proportion of stars have masses lower than the Sun?
A) 90% B) 10% C) 50% D) 70%
Most atoms are
a. electrically charged. b. uncharged but made up of electrically charged pieces. c. unitary things that cannot be broken up in any way. d. sources of easily-removed protons. e. sources of easily-removed neutrons.
Molar Specific Heats: How much heat is required to increase the temperature of 1.70 moles of an ideal monatomic gas by 23.0 K at constant pressure? (R = 8.31 J/mol ? K)
A. 812 J B. 346 J C. 751 J D. 391 J E. 290 J
Standing Sound Waves: In a resonating pipe that is open at one end and closed at the other end, there
A. are displacement nodes at each end. B. are displacement antinodes at each end. C. is a displacement node at the open end and a displacement antinode at the closed end. D. is a displacement node at the closed end and a displacement antinode at the open end.