A(n) _____ is a model of the Universe with the Sun at the center, such as the Copernican universe
A) geocentric universe
B) concentric universe
C) heliocentric universe
D) eccentric universe
C
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The planet Venus requires 225 days to orbit the Sun, which has a mass M = 1.99 × 1030 kg, in an almost circular trajectory. Calculate the radius of the orbit and the orbital speed of Venus as it circles the Sun.
What will be an ideal response?
Which of the following are not a common depositional feature of shoreline topography?
a. Barrier islands b. Pocket beaches c. Sea arches d. Spits
A sound level of 93 dB is how many times as intense as one of 73 dB?
Which form of relativity applies for observers who are accelerating?
a. General relativity applies. b. Special relativity applies. c. Both special relativity and general relativity apply. d. Neither applies since the observer must be in an inertial frame to use either one.