Why isn't there a planet where the asteroid belt is located?
A) There was not enough material in this part of the solar nebula to form a planet.
B) A planet once formed here, but it was broken apart by a catastrophic collision.
C) Gravitational tugs from Jupiter prevented material from collecting together to form a planet.
D) There was too much rocky material to form a terrestrial planet, but not enough gaseous material to form a jovian planet.
E) The temperature in this portion of the solar nebula was just right to prevent rock from sticking together.
C
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When a meteoroid enters Earth's atmosphere, it is called a(n) ______________
a. meteor or "shooting star" b. asteroid c. star d. planet e. dwarf planet
In a RLC circuit, a second capacitor is connected in parallel with the capacitor previously in the circuit. What is the effect of this change on the impedance of the circuit?
A) It increases. B) It decreases. C) It does not change. D) It increases for frequencies below resonance and decreases for frequencies above resonance. E) It decreases for frequencies below resonance and increases for frequencies above resonance.
Pressure in a Liquid: An air bubble underwater has the same pressure as that of the surrounding water. As the air bubble rises toward the surface (and its temperature remains constant), the volume of the air bubble
A. increases. B. decreases. C. remains constant. D. increases or decreases, depending on the rate it rises.
A light source at a distance of 1 meter that emits 50 watts of visible radiation has the same ________ as a source emitting 200 watts and is located ________.
A. luminosity; 4 meters away B. apparent brightness; 4 meters away C. apparent brightness; 2 meters away D. luminosity; 2 meters away