The model of ________ used circular deferents and epicycles in a geocentric universe to explain planetary motions
A) Ptolemy B) Hipparchos C) Copernicus D) Aristarchus E) Pythagoras
A
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Which of the following rocks is not a sedimentary rock?
a. Shale b. Sandstone c. Marble d. Conglomerate
The graph shows 
versus t for an object moving in a straight line. What is the average velocity from t = 0 s to t = 9 s?
A. 44 
B. 32
C. 22
D. 24
The set of nuclear reactions that power our sun can be summarized a 4p+ ? 4He+2 + 2e+. The masses of the particles involved are 938.272 MeV/c2 (proton, p+), 3727.38 MeV/c2 (alpha particle, 4He+2), and 0.511 MeV/c2 (positron, e+)
How much energy is released by each set of these reactions? A) 2790 MeV B) 279 MeV C) 24.69 MeV D) 28.3 MeV
Venus is most like Earth in terms of size
a. True b. False Indicate whether the statement is true or false