A 2.00-kg mass oscillates on the end of a spring with spring constant 12.0 N/m. Its amplitude of oscillation decreases from 10.0 cm to 1.0 cm in 4.00 minutes. What is the linear damping coefficient of this oscillator?
A)
134 N?s/m
B)
1.76 N?s/m
C)
0.311 N?s/m
D)
0.0384 N?s/m
E)
0.622 N?s/m
D
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An object more massive than the Sun, but roughly the size of a city, is a:
A) supernova remnant. B) white dwarf. C) brown dwarf. D) neutron star. E) red dwarf.
An object is located in front of a converging lens with focal length F as shown. The image can be described as
A. upright, magnified, and real.
B. upright, diminished, and virtual.
C. inverted, diminished, and real.
D. inverted, magnified, and virtual.
If sunlight peaks at 0.55 ?m wavelength, this infers a surface temperature of the sun of how many thousand degrees Kelvin?
A) 9.5 B) 5.3 C) 2.5 D) 25. E) 15.
Plate tectonics states that
A) the continents move through Earth's crust like an icebreaker through ice. B) earthquakes occur because tectonic plates break like a dropped dinner plate. C) tectonic plates have not moved since Pangaea broke up. D) tectonic plates are in slow, but constant motion.