The Sun is a(n) ______________
Fill in the blank(s) with correct word
star
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Based on current evidence and models, the total amount of matter (both luminous matter and dark matter) represents approximately what percentage of the total mass and energy of the universe?
A) about 1 percent B) about 10 percent C) about 30 percent D) about 50 percent E) 100 percent
Satellite Motion: A satellite having orbital speed V orbits a planet of mass M. If the planet had half as much mass, the orbital speed of the satellite at the same distance from the center would be
A. V
.
B. 2V.
C. V.
D. V/
.
E. V/2.
Atomic bomb tests demonstrated which aspect of star formation?
A) A shock wave surrounding and compressing a molecular cloud. B) The ignition of fusion that changes a protostar to a star. C) A protostar's movement on the Hayashi track. D) The fragmentation of a molecular cloud. E) A shock wave pushing a molecular cloud from one side.
What effect would stirring the mixture have on the rate of dissolving the solid in a liquid?