The primary difference between the special theory of relativity and the general theory of relativity is that the general theory also describes
A) length contraction.
B) the nature of gravity.
C) time dilation.
D) the constancy of the speed of light.
B
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The fastest moving planet in a solar system is the
A) smallest planet. B) most massive planet. C) planet nearest the Sun. D) planet farthest from the Sun. E) all move at the same speed.
The colors of Jupiter's clouds suggest the presence of ________.
A. organic molecules B. iron oxides C. red-shifted colors due to the fast motion D. hydrogen and helium E. carbon dioxide
Wall posters are usually sold curled up in cylindrical cardboard tubes. If the length of the tube is 84.5 cm, and the diameter of the tube is 2.40 cm, what is the area of the poster, in cm2? (Assume the poster doesn't overlap itself.)
A) 1529 cm2 B) 203 cm2 C) 637 cm2 D) 382 cm2 E) 605 cm2
Doppler Effect: A siren emitting sound of frequency 1000 Hz approaches a stationary observer at one-half the speed of sound. The observer hears a frequency of
A. 1000 Hz B. 2000 Hz. C. 500 Hz. D. 1500 Hz. E. None of these.