Simple observations of the darkness of the night sky and the redshifts of the galaxies tell you that:
A) the Universe is contracting.
B) the Universe must have an edge.
C) the Universe is perfect and unchanging.
D) the Universe must have had a beginning.
D
Physics & Space Science
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____________________ formed as Mercury cooled and shrank
Fill in the blank(s) with correct word
Physics & Space Science
Power: If the power rating of a 400-? resistor is 0.80 W, what is the maximum current it can safely draw?
A. 45 mA B. 18 mA C. 4.4 mA D. 2.0 mA E. 320 mA
Physics & Space Science
Sea breezes that occur near the shore are attributed to a difference between land and water with respect to what property?
a. mass density b. coefficient of volume expansion c. specific heat d. emissivity
Physics & Space Science
The boundary between two air masses is called a
a. division. b. border. c. front. d. storm.
Physics & Space Science