If the sun's surface cooled, how would its appearance change?
A) It would appear more blue. B) It would stay the same.
C) It would become bright white. D) It would appear more red.
D
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The Milky Way galaxy has collided with several other large galaxies in its lifetime
a. True b. False Indicate whether the statement is true or false
Where are neutrons found in the hydrogen atom?
a. nucleus b. cloud surrounding the nucleus c. outside the atom d. None of the other choices are correct.
Conversion of Units: The density of water is 1.00 g/cm3. What is its density in kg/m3?
Fill in the blank(s) with the appropriate word(s).
A 10-kg brick and a 1-kg apple are dropped in a vacuum. The force of gravity on the brick is
A) the same as the force on the apple. B) 10 times more than the force on the apple. C) one-tenth as much as on the apple. D) zero.