Which of the following does not describe the universe as envisioned by Isaac New
ID: 1515456 • Letter: W
Question
Which of the following does not describe the universe as envisioned by Isaac Newton?
a.having existed forever
b.expanding slowly
c.static
d.infinite
In Newton's model of an infinite universe with stars distributed smoothly throughout, an individual star would feel
a.a preponderance of force pulling it toward the center of the universe.
b.a preponderance of force pushing it away from the center of the universe.
c.equal forces pulling in every direction, resulting in no net force.
d.forces that would vary greatly from one part of the universe to another.
What is meant by "the observable universe"?
a.The universe is of a finite age, so light has not been traveling forever. There are regions from which light has had time to reach us ("the observable universe"), and regions outside this from which light has not had time to reach us.
b.The "observable universe" consists of everything in the universe that emits radiation and therefore can be "seen" in some wavelength range. This universe excludes dark matter and dark energy.
Explanation / Answer
1) b.expanding slowly because it was Hubble who discovered that the universe was expanding
2) c.equal forces pulling in every direction, resulting in no net force.
3) a.The universe is of a finite age, so light has not been traveling forever. There are regions from which light has had time to reach us ("the observable universe"), and regions outside this from which light has not had time to reach us.
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