Why didn't a planet form where the asteroid belt is now located?
A) Gravitational tugs from Jupiter prevented material from collecting together to form a planet.
B) There was not enough material in this part of the solar nebula to form a planet.
C) There was too much rocky material to form a terrestrial planet, but not enough gaseous material to form a jovian planet.
D) The temperature in this portion of the solar nebula was just right to prevent rock from sticking together.
A) Gravitational tugs from Jupiter prevented material from collecting together to form a planet.
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A 15-?F capacitor and a 30-?F capacitor are connected in series, and charged to a potential difference of 50 V. What is the resulting charge on the 30-?F capacitor?
A. 0.70 mC B. 0.80 mC C. 0.50 mC D. 0.60 mC E. 0.40 mC
For gasoline to explode, it needs
A. to be mixed with oxygen B. to be mixed with nitrogen C. to be mixed with carbon dioxide D. No mixing needed; just a spark.
Which of the following represents a continuation of the basic general idea of the "Copernican revolution"?
A) The idea that our sun is just one star among billions of similar stars. B) The idea that the universe was not made just for us. C) The idea that the human species is not very different biologically from the other species. D) All of the above. E) None of the above.
In a transition from one vibrational state to another, a molecule emits a photon of wavelength 5.56 µm
What is the energy difference between these two states? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 13.6 MeV B) 13.6 eV C) 0.223 eV D) 0.223 MeV E) 2.23 MeV