What eventually halts the gravitational collapse of an interstellar gas cloud that forms an object that is not massive enough to become a star?
A) Nothing; all collapsing gas clouds become black holes.
B) the crowding of electrons in the core
C) A critical fraction of the gas has been driven further into space.
D) the central object becoming hot enough to sustain nuclear fusion in its core
B
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A dinner plate falls vertically to the floor and breaks up into three pieces, which slide horizontally along the floor. Immediately after the impact,
a 200-g piece moves along the +x-axis with a speed of 2.00 m/s, a 235-g piece moves along the +y-axis with a speed of 1.50 m/s. The third piece has a mass of 100 g. What is the speed of the third piece? A) 2.51 m/s B) 2.57 m/s C) 3.50 m/s D) 5.33 m/s E) 6.83 m/s
Jupiter puts back into space twice the energy it gets from the Sun
Indicate whether the statement is true or false
Many crops are grown to be bland-tasting but pretty to look at
What will be an ideal response?
Air temperature can increase by the process of
A) moisture condensation. B) contact with cold surfaces. C) moisture evaporation. D) all of the above