The core of a protostar that will eventually become a brown dwarf shrinks until
A) the type of pressure called degeneracy pressure becomes important.
B) its central temperature is high enough to support fusion reactions.
C) it forms a rocky core.
D) it radiates brown light.
A
Physics & Space Science
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The amount of disorder in a system is called
A. entropy. B. density. C. temperature on the Kelvin scale. D. pressure.
Physics & Space Science
Light emitted by the Sun is
A) polarized. B) nonpolarized. C) sometimes polarized.
Physics & Space Science
Two different materials are in contact as shown in the figure. Determine the temperature distribution through the two materials after 10 minutes using a 1 inch grid as shown.
Physics & Space Science
The switch is closed in the figure below. After a long time compared with the time constant of the circuit, what will the current be in the 2-V resistor?