If an object has a multiplicity ? that decreases as its thermal energy U increases, its temperature would
A. be always zero.
B. be always positive (and nonzero).
C. be negative (and nonzero).
D. increase as U increases.
E. decrease as U increases
C. be negative (and nonzero).
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Galileo's observation of the satellites of Jupiter showed that ________.
A. the Moon was not a flawless sphere B. nothing orbited Earth C. there were objects that did not orbit Earth D. planets orbited the Sun E. None of these choices is correct.
Large sunspots are larger than our whole planet
Indicate whether the statement is true or false
Velocity Addition: Consider three galaxies, Alpha, Beta and Gamma. An astronomer in Beta sees each of the other two galaxies moving away from him in opposite directions at 0.70c. At what speed would an observer in Alpha see the galaxy Gamma moving?
A. 0.70c B. 1.4c C. 0.82c D. 0.94c E. 0.98c
The innermost satellite of Jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days. What is the mass of Jupiter? (G = 6.67 × 10-11 N ? m2/kg2)
A) 1.33 × 1027 kg B) 1.50 × 1027 kg C) 1.72 × 1027 kg D) 1.89 × 1027 kg E) 3.08 × 1027 kg