If the Universe is infinitely large, infinitely old, and expanding, the night sky should be bright. But in fact, it is not. What do we call this?
A. Olbers' paradox
B. Grand Unified Theory
C. the Neutrino Discrepancy
D. the Cosmological Principle
E. the Hubble Distance law
Answer: A
Physics & Space Science
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Uranus has 10 large regular moons
a. True b. False Indicate whether the statement is true or false
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Tides are caused because different parts of the Earth's oceans are at different distances from the Moon
a. True b. False Indicate whether the statement is true or false
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Two resistors in series are equivalent to 9.0 ?, and in parallel they are equivalent to 2.0 ?. What are the resistances of these two resistors?
What will be an ideal response?
Physics & Space Science
Metals are relatively more abundant in
A) old stars. B) new stars. C) neither in particular
Physics & Space Science